Wrap all errors with tracerr

eth/auction.go

@@ -17,6 +17,7 @@ import (
 	HermezAuctionProtocol "github.com/hermeznetwork/hermez-node/eth/contracts/auction"
 	HEZ "github.com/hermeznetwork/hermez-node/eth/contracts/tokenHEZ"
 	"github.com/hermeznetwork/hermez-node/log"
+	"github.com/hermeznetwork/tracerr"
 )
 
 // SlotState is the state of a slot
@@ -238,15 +239,15 @@ type AuctionClient struct {
 func NewAuctionClient(client *EthereumClient, address ethCommon.Address, tokenHEZCfg TokenConfig) (*AuctionClient, error) {
 	contractAbi, err := abi.JSON(strings.NewReader(string(HermezAuctionProtocol.HermezAuctionProtocolABI)))
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	auction, err := HermezAuctionProtocol.NewHermezAuctionProtocol(address, client.Client())
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	tokenHEZ, err := HEZ.NewHEZ(tokenHEZCfg.Address, client.Client())
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &AuctionClient{
 		client:      client,
@@ -268,7 +269,7 @@ func (c *AuctionClient) AuctionSetSlotDeadline(newDeadline uint8) (*types.Transa
 			return c.auction.SetSlotDeadline(auth, newDeadline)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed setting slotDeadline: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed setting slotDeadline: %w", err))
 	}
 	return tx, nil
 }
@@ -277,9 +278,9 @@ func (c *AuctionClient) AuctionSetSlotDeadline(newDeadline uint8) (*types.Transa
 func (c *AuctionClient) AuctionGetSlotDeadline() (slotDeadline uint8, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		slotDeadline, err = c.auction.GetSlotDeadline(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return 0, err
+		return 0, tracerr.Wrap(err)
 	}
 	return slotDeadline, nil
 }
@@ -292,7 +293,7 @@ func (c *AuctionClient) AuctionSetOpenAuctionSlots(newOpenAuctionSlots uint16) (
 			return c.auction.SetOpenAuctionSlots(auth, newOpenAuctionSlots)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed setting openAuctionSlots: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed setting openAuctionSlots: %w", err))
 	}
 	return tx, nil
 }
@@ -301,9 +302,9 @@ func (c *AuctionClient) AuctionSetOpenAuctionSlots(newOpenAuctionSlots uint16) (
 func (c *AuctionClient) AuctionGetOpenAuctionSlots() (openAuctionSlots uint16, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		openAuctionSlots, err = c.auction.GetOpenAuctionSlots(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return 0, err
+		return 0, tracerr.Wrap(err)
 	}
 	return openAuctionSlots, nil
 }
@@ -316,7 +317,7 @@ func (c *AuctionClient) AuctionSetClosedAuctionSlots(newClosedAuctionSlots uint1
 			return c.auction.SetClosedAuctionSlots(auth, newClosedAuctionSlots)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed setting closedAuctionSlots: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed setting closedAuctionSlots: %w", err))
 	}
 	return tx, nil
 }
@@ -325,9 +326,9 @@ func (c *AuctionClient) AuctionSetClosedAuctionSlots(newClosedAuctionSlots uint1
 func (c *AuctionClient) AuctionGetClosedAuctionSlots() (closedAuctionSlots uint16, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		closedAuctionSlots, err = c.auction.GetClosedAuctionSlots(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return 0, err
+		return 0, tracerr.Wrap(err)
 	}
 	return closedAuctionSlots, nil
 }
@@ -340,7 +341,7 @@ func (c *AuctionClient) AuctionSetOutbidding(newOutbidding uint16) (tx *types.Tr
 			return c.auction.SetOutbidding(auth, newOutbidding)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed setting setOutbidding: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed setting setOutbidding: %w", err))
 	}
 	return tx, nil
 }
@@ -349,9 +350,9 @@ func (c *AuctionClient) AuctionSetOutbidding(newOutbidding uint16) (tx *types.Tr
 func (c *AuctionClient) AuctionGetOutbidding() (outbidding uint16, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		outbidding, err = c.auction.GetOutbidding(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return 0, err
+		return 0, tracerr.Wrap(err)
 	}
 	return outbidding, nil
 }
@@ -364,7 +365,7 @@ func (c *AuctionClient) AuctionSetAllocationRatio(newAllocationRatio [3]uint16)
 			return c.auction.SetAllocationRatio(auth, newAllocationRatio)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed setting allocationRatio: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed setting allocationRatio: %w", err))
 	}
 	return tx, nil
 }
@@ -373,9 +374,9 @@ func (c *AuctionClient) AuctionSetAllocationRatio(newAllocationRatio [3]uint16)
 func (c *AuctionClient) AuctionGetAllocationRatio() (allocationRation [3]uint16, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		allocationRation, err = c.auction.GetAllocationRatio(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return [3]uint16{}, err
+		return [3]uint16{}, tracerr.Wrap(err)
 	}
 	return allocationRation, nil
 }
@@ -388,7 +389,7 @@ func (c *AuctionClient) AuctionSetDonationAddress(newDonationAddress ethCommon.A
 			return c.auction.SetDonationAddress(auth, newDonationAddress)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed setting donationAddress: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed setting donationAddress: %w", err))
 	}
 	return tx, nil
 }
@@ -398,9 +399,9 @@ func (c *AuctionClient) AuctionGetDonationAddress() (donationAddress *ethCommon.
 	var _donationAddress ethCommon.Address
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		_donationAddress, err = c.auction.GetDonationAddress(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &_donationAddress, nil
 }
@@ -413,7 +414,7 @@ func (c *AuctionClient) AuctionSetBootCoordinator(newBootCoordinator ethCommon.A
 			return c.auction.SetBootCoordinator(auth, newBootCoordinator)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed setting bootCoordinator: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed setting bootCoordinator: %w", err))
 	}
 	return tx, nil
 }
@@ -423,9 +424,9 @@ func (c *AuctionClient) AuctionGetBootCoordinator() (bootCoordinator *ethCommon.
 	var _bootCoordinator ethCommon.Address
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		_bootCoordinator, err = c.auction.GetBootCoordinator(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &_bootCoordinator, nil
 }
@@ -439,7 +440,7 @@ func (c *AuctionClient) AuctionChangeDefaultSlotSetBid(slotSet int64, newInitial
 			return c.auction.ChangeDefaultSlotSetBid(auth, slotSetToSend, newInitialMinBid)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed changing slotSet Bid: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed changing slotSet Bid: %w", err))
 	}
 	return tx, nil
 }
@@ -448,9 +449,9 @@ func (c *AuctionClient) AuctionChangeDefaultSlotSetBid(slotSet int64, newInitial
 func (c *AuctionClient) AuctionGetClaimableHEZ(claimAddress ethCommon.Address) (claimableHEZ *big.Int, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		claimableHEZ, err = c.auction.GetClaimableHEZ(nil, claimAddress)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return claimableHEZ, nil
 }
@@ -463,7 +464,7 @@ func (c *AuctionClient) AuctionSetCoordinator(forger ethCommon.Address, coordina
 			return c.auction.SetCoordinator(auth, forger, coordinatorURL)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed set coordinator: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed set coordinator: %w", err))
 	}
 	return tx, nil
 }
@@ -473,9 +474,9 @@ func (c *AuctionClient) AuctionGetCurrentSlotNumber() (currentSlotNumber int64,
 	var _currentSlotNumber *big.Int
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		_currentSlotNumber, err = c.auction.GetCurrentSlotNumber(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return 0, err
+		return 0, tracerr.Wrap(err)
 	}
 	return _currentSlotNumber.Int64(), nil
 }
@@ -485,9 +486,9 @@ func (c *AuctionClient) AuctionGetMinBidBySlot(slot int64) (minBid *big.Int, err
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		slotToSend := big.NewInt(slot)
 		minBid, err = c.auction.GetMinBidBySlot(nil, slotToSend)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return big.NewInt(0), err
+		return big.NewInt(0), tracerr.Wrap(err)
 	}
 	return minBid, nil
 }
@@ -497,9 +498,9 @@ func (c *AuctionClient) AuctionGetSlotSet(slot int64) (slotSet *big.Int, err err
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		slotToSend := big.NewInt(slot)
 		slotSet, err = c.auction.GetSlotSet(nil, slotToSend)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return big.NewInt(0), err
+		return big.NewInt(0), tracerr.Wrap(err)
 	}
 	return slotSet, nil
 }
@@ -508,9 +509,9 @@ func (c *AuctionClient) AuctionGetSlotSet(slot int64) (slotSet *big.Int, err err
 func (c *AuctionClient) AuctionGetDefaultSlotSetBid(slotSet uint8) (minBidSlotSet *big.Int, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		minBidSlotSet, err = c.auction.GetDefaultSlotSetBid(nil, slotSet)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return big.NewInt(0), err
+		return big.NewInt(0), tracerr.Wrap(err)
 	}
 	return minBidSlotSet, nil
 }
@@ -520,9 +521,9 @@ func (c *AuctionClient) AuctionGetSlotNumber(blockNum int64) (slot int64, err er
 	var _slot *big.Int
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		_slot, err = c.auction.GetSlotNumber(nil, big.NewInt(blockNum))
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return 0, err
+		return 0, tracerr.Wrap(err)
 	}
 	return _slot.Int64(), nil
 }
@@ -536,7 +537,7 @@ func (c *AuctionClient) AuctionBid(amount *big.Int, slot int64, bidAmount *big.I
 			spender := c.address
 			nonce, err := c.tokenHEZ.Nonces(nil, owner)
 			if err != nil {
-				return nil, err
+				return nil, tracerr.Wrap(err)
 			}
 			tokenName := c.tokenHEZCfg.Name
 			tokenAddr := c.tokenHEZCfg.Address
@@ -548,7 +549,7 @@ func (c *AuctionClient) AuctionBid(amount *big.Int, slot int64, bidAmount *big.I
 			return c.auction.ProcessBid(auth, amount, _slot, bidAmount, permit)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed bid: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed bid: %w", err))
 	}
 	return tx, nil
 }
@@ -563,7 +564,7 @@ func (c *AuctionClient) AuctionMultiBid(amount *big.Int, startingSlot, endingSlo
 			spender := c.address
 			nonce, err := c.tokenHEZ.Nonces(nil, owner)
 			if err != nil {
-				return nil, err
+				return nil, tracerr.Wrap(err)
 			}
 			tokenName := c.tokenHEZCfg.Name
 			tokenAddr := c.tokenHEZCfg.Address
@@ -577,7 +578,7 @@ func (c *AuctionClient) AuctionMultiBid(amount *big.Int, startingSlot, endingSlo
 			return c.auction.ProcessMultiBid(auth, amount, _startingSlot, _endingSlot, slotSets, maxBid, minBid, permit)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed multibid: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed multibid: %w", err))
 	}
 	return tx, nil
 }
@@ -586,9 +587,9 @@ func (c *AuctionClient) AuctionMultiBid(amount *big.Int, startingSlot, endingSlo
 func (c *AuctionClient) AuctionCanForge(forger ethCommon.Address, blockNum int64) (canForge bool, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		canForge, err = c.auction.CanForge(nil, forger, big.NewInt(blockNum))
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return false, err
+		return false, tracerr.Wrap(err)
 	}
 	return canForge, nil
 }
@@ -601,7 +602,7 @@ func (c *AuctionClient) AuctionClaimHEZ() (tx *types.Transaction, err error) {
 			return c.auction.ClaimHEZ(auth)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed claim HEZ: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed claim HEZ: %w", err))
 	}
 	return tx, nil
 }
@@ -614,7 +615,7 @@ func (c *AuctionClient) AuctionForge(forger ethCommon.Address) (tx *types.Transa
 			return c.auction.Forge(auth, forger)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed forge: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed forge: %w", err))
 	}
 	return tx, nil
 }
@@ -625,25 +626,25 @@ func (c *AuctionClient) AuctionConstants() (auctionConstants *common.AuctionCons
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		auctionConstants.BlocksPerSlot, err = c.auction.BLOCKSPERSLOT(nil)
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		genesisBlock, err := c.auction.GenesisBlock(nil)
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		auctionConstants.GenesisBlockNum = genesisBlock.Int64()
 		auctionConstants.HermezRollup, err = c.auction.HermezRollup(nil)
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		auctionConstants.InitialMinimalBidding, err = c.auction.INITIALMINIMALBIDDING(nil)
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		auctionConstants.TokenHEZ, err = c.auction.TokenHEZ(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return auctionConstants, nil
 }
@@ -654,43 +655,43 @@ func (c *AuctionClient) AuctionVariables() (auctionVariables *common.AuctionVari
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		auctionVariables.AllocationRatio, err = c.AuctionGetAllocationRatio()
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		bootCoordinator, err := c.AuctionGetBootCoordinator()
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		auctionVariables.BootCoordinator = *bootCoordinator
 		auctionVariables.ClosedAuctionSlots, err = c.AuctionGetClosedAuctionSlots()
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		var defaultSlotSetBid [6]*big.Int
 		for i := uint8(0); i < 6; i++ {
 			bid, err := c.AuctionGetDefaultSlotSetBid(i)
 			if err != nil {
-				return err
+				return tracerr.Wrap(err)
 			}
 			defaultSlotSetBid[i] = bid
 		}
 		auctionVariables.DefaultSlotSetBid = defaultSlotSetBid
 		donationAddress, err := c.AuctionGetDonationAddress()
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		auctionVariables.DonationAddress = *donationAddress
 		auctionVariables.OpenAuctionSlots, err = c.AuctionGetOpenAuctionSlots()
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		auctionVariables.Outbidding, err = c.AuctionGetOutbidding()
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		auctionVariables.SlotDeadline, err = c.AuctionGetSlotDeadline()
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return auctionVariables, nil
 }
@@ -729,7 +730,7 @@ func (c *AuctionClient) AuctionEventsByBlock(blockNum int64) (*AuctionEvents, *e
 
 	logs, err := c.client.client.FilterLogs(context.TODO(), query)
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, tracerr.Wrap(err)
 	}
 	if len(logs) > 0 {
 		blockHash = &logs[0].BlockHash
@@ -737,7 +738,7 @@ func (c *AuctionClient) AuctionEventsByBlock(blockNum int64) (*AuctionEvents, *e
 	for _, vLog := range logs {
 		if vLog.BlockHash != *blockHash {
 			log.Errorw("Block hash mismatch", "expected", blockHash.String(), "got", vLog.BlockHash.String())
-			return nil, nil, ErrBlockHashMismatchEvent
+			return nil, nil, tracerr.Wrap(ErrBlockHashMismatchEvent)
 		}
 		switch vLog.Topics[0] {
 		case logAuctionNewBid:
@@ -748,7 +749,7 @@ func (c *AuctionClient) AuctionEventsByBlock(blockNum int64) (*AuctionEvents, *e
 			}
 			var newBid AuctionEventNewBid
 			if err := c.contractAbi.Unpack(&auxNewBid, "NewBid", vLog.Data); err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			newBid.BidAmount = auxNewBid.BidAmount
 			newBid.Slot = new(big.Int).SetBytes(vLog.Topics[1][:]).Int64()
@@ -757,19 +758,19 @@ func (c *AuctionClient) AuctionEventsByBlock(blockNum int64) (*AuctionEvents, *e
 		case logAuctionNewSlotDeadline:
 			var newSlotDeadline AuctionEventNewSlotDeadline
 			if err := c.contractAbi.Unpack(&newSlotDeadline, "NewSlotDeadline", vLog.Data); err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			auctionEvents.NewSlotDeadline = append(auctionEvents.NewSlotDeadline, newSlotDeadline)
 		case logAuctionNewClosedAuctionSlots:
 			var newClosedAuctionSlots AuctionEventNewClosedAuctionSlots
 			if err := c.contractAbi.Unpack(&newClosedAuctionSlots, "NewClosedAuctionSlots", vLog.Data); err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			auctionEvents.NewClosedAuctionSlots = append(auctionEvents.NewClosedAuctionSlots, newClosedAuctionSlots)
 		case logAuctionNewOutbidding:
 			var newOutbidding AuctionEventNewOutbidding
 			if err := c.contractAbi.Unpack(&newOutbidding, "NewOutbidding", vLog.Data); err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			auctionEvents.NewOutbidding = append(auctionEvents.NewOutbidding, newOutbidding)
 		case logAuctionNewDonationAddress:
@@ -783,19 +784,19 @@ func (c *AuctionClient) AuctionEventsByBlock(blockNum int64) (*AuctionEvents, *e
 		case logAuctionNewOpenAuctionSlots:
 			var newOpenAuctionSlots AuctionEventNewOpenAuctionSlots
 			if err := c.contractAbi.Unpack(&newOpenAuctionSlots, "NewOpenAuctionSlots", vLog.Data); err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			auctionEvents.NewOpenAuctionSlots = append(auctionEvents.NewOpenAuctionSlots, newOpenAuctionSlots)
 		case logAuctionNewAllocationRatio:
 			var newAllocationRatio AuctionEventNewAllocationRatio
 			if err := c.contractAbi.Unpack(&newAllocationRatio, "NewAllocationRatio", vLog.Data); err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			auctionEvents.NewAllocationRatio = append(auctionEvents.NewAllocationRatio, newAllocationRatio)
 		case logAuctionSetCoordinator:
 			var setCoordinator AuctionEventSetCoordinator
 			if err := c.contractAbi.Unpack(&setCoordinator, "SetCoordinator", vLog.Data); err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			setCoordinator.BidderAddress = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
 			setCoordinator.ForgerAddress = ethCommon.BytesToAddress(vLog.Topics[2].Bytes())
@@ -803,7 +804,7 @@ func (c *AuctionClient) AuctionEventsByBlock(blockNum int64) (*AuctionEvents, *e
 		case logAuctionNewForgeAllocated:
 			var newForgeAllocated AuctionEventNewForgeAllocated
 			if err := c.contractAbi.Unpack(&newForgeAllocated, "NewForgeAllocated", vLog.Data); err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			newForgeAllocated.Bidder = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
 			newForgeAllocated.Forger = ethCommon.BytesToAddress(vLog.Topics[2].Bytes())
@@ -816,7 +817,7 @@ func (c *AuctionClient) AuctionEventsByBlock(blockNum int64) (*AuctionEvents, *e
 			}
 			var newDefaultSlotSetBid AuctionEventNewDefaultSlotSetBid
 			if err := c.contractAbi.Unpack(&auxNewDefaultSlotSetBid, "NewDefaultSlotSetBid", vLog.Data); err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			newDefaultSlotSetBid.NewInitialMinBid = auxNewDefaultSlotSetBid.NewInitialMinBid
 			newDefaultSlotSetBid.SlotSet = auxNewDefaultSlotSetBid.SlotSet.Int64()
@@ -829,7 +830,7 @@ func (c *AuctionClient) AuctionEventsByBlock(blockNum int64) (*AuctionEvents, *e
 		case logAuctionHEZClaimed:
 			var HEZClaimed AuctionEventHEZClaimed
 			if err := c.contractAbi.Unpack(&HEZClaimed, "HEZClaimed", vLog.Data); err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			HEZClaimed.Owner = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
 			auctionEvents.HEZClaimed = append(auctionEvents.HEZClaimed, HEZClaimed)

eth/client.go

@@ -7,6 +7,7 @@ import (
 	ethKeystore "github.com/ethereum/go-ethereum/accounts/keystore"
 	ethCommon "github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/ethclient"
+	"github.com/hermeznetwork/tracerr"
 )
 
 var errTODO = fmt.Errorf("TODO: Not implemented yet")
@@ -67,15 +68,15 @@ func NewClient(client *ethclient.Client, account *accounts.Account, ks *ethKeyst
 	ethereumClient := NewEthereumClient(client, account, ks, &cfg.Ethereum)
 	auctionClient, err := NewAuctionClient(ethereumClient, cfg.Auction.Address, cfg.Auction.TokenHEZ)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	rollupClient, err := NewRollupClient(ethereumClient, cfg.Rollup.Address, cfg.Auction.TokenHEZ)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	wDelayerClient, err := NewWDelayerClient(ethereumClient, cfg.WDelayer.Address)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &Client{
 		EthereumClient: *ethereumClient,

eth/contracts/auction/HermezAuctionProtocol.go

@@ -13,6 +13,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/event"
+	"github.com/hermeznetwork/tracerr"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -36,12 +37,12 @@ var HermezAuctionProtocolBin = "0x608060405234801561001057600080fd5b50613d678061
 func DeployHermezAuctionProtocol(auth *bind.TransactOpts, backend bind.ContractBackend) (common.Address, *types.Transaction, *HermezAuctionProtocol, error) {
 	parsed, err := abi.JSON(strings.NewReader(HermezAuctionProtocolABI))
 	if err != nil {
-		return common.Address{}, nil, nil, err
+		return common.Address{}, nil, nil, tracerr.Wrap(err)
 	}
 
 	address, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(HermezAuctionProtocolBin), backend)
 	if err != nil {
-		return common.Address{}, nil, nil, err
+		return common.Address{}, nil, nil, tracerr.Wrap(err)
 	}
 	return address, tx, &HermezAuctionProtocol{HermezAuctionProtocolCaller: HermezAuctionProtocolCaller{contract: contract}, HermezAuctionProtocolTransactor: HermezAuctionProtocolTransactor{contract: contract}, HermezAuctionProtocolFilterer: HermezAuctionProtocolFilterer{contract: contract}}, nil
 }
@@ -109,7 +110,7 @@ type HermezAuctionProtocolTransactorRaw struct {
 func NewHermezAuctionProtocol(address common.Address, backend bind.ContractBackend) (*HermezAuctionProtocol, error) {
 	contract, err := bindHermezAuctionProtocol(address, backend, backend, backend)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocol{HermezAuctionProtocolCaller: HermezAuctionProtocolCaller{contract: contract}, HermezAuctionProtocolTransactor: HermezAuctionProtocolTransactor{contract: contract}, HermezAuctionProtocolFilterer: HermezAuctionProtocolFilterer{contract: contract}}, nil
 }
@@ -118,7 +119,7 @@ func NewHermezAuctionProtocol(address common.Address, backend bind.ContractBacke
 func NewHermezAuctionProtocolCaller(address common.Address, caller bind.ContractCaller) (*HermezAuctionProtocolCaller, error) {
 	contract, err := bindHermezAuctionProtocol(address, caller, nil, nil)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolCaller{contract: contract}, nil
 }
@@ -127,7 +128,7 @@ func NewHermezAuctionProtocolCaller(address common.Address, caller bind.Contract
 func NewHermezAuctionProtocolTransactor(address common.Address, transactor bind.ContractTransactor) (*HermezAuctionProtocolTransactor, error) {
 	contract, err := bindHermezAuctionProtocol(address, nil, transactor, nil)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolTransactor{contract: contract}, nil
 }
@@ -136,7 +137,7 @@ func NewHermezAuctionProtocolTransactor(address common.Address, transactor bind.
 func NewHermezAuctionProtocolFilterer(address common.Address, filterer bind.ContractFilterer) (*HermezAuctionProtocolFilterer, error) {
 	contract, err := bindHermezAuctionProtocol(address, nil, nil, filterer)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolFilterer{contract: contract}, nil
 }
@@ -145,7 +146,7 @@ func NewHermezAuctionProtocolFilterer(address common.Address, filterer bind.Cont
 func bindHermezAuctionProtocol(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor, filterer bind.ContractFilterer) (*bind.BoundContract, error) {
 	parsed, err := abi.JSON(strings.NewReader(HermezAuctionProtocolABI))
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return bind.NewBoundContract(address, parsed, caller, transactor, filterer), nil
 }
@@ -197,7 +198,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) BLOCKSPERSLOT(opts *b
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "BLOCKS_PER_SLOT")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // BLOCKSPERSLOT is a free data retrieval call binding the contract method 0x2243de47.
@@ -223,7 +224,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) INITIALMINIMALBIDDING
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "INITIAL_MINIMAL_BIDDING")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // INITIALMINIMALBIDDING is a free data retrieval call binding the contract method 0xe6065914.
@@ -249,7 +250,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) CanForge(opts *bind.C
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "canForge", forger, blockNumber)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // CanForge is a free data retrieval call binding the contract method 0x83b1f6a0.
@@ -279,7 +280,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) Coordinators(opts *bi
 	})
 	out := ret
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "coordinators", arg0)
-	return *ret, err
+	return *ret, tracerr.Wrap(err)
 }
 
 // Coordinators is a free data retrieval call binding the contract method 0xa48af096.
@@ -311,7 +312,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) GenesisBlock(opts *bi
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "genesisBlock")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GenesisBlock is a free data retrieval call binding the contract method 0x4cdc9c63.
@@ -337,7 +338,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) GetAllocationRatio(op
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "getAllocationRatio")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetAllocationRatio is a free data retrieval call binding the contract method 0xec29159b.
@@ -363,7 +364,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) GetBootCoordinator(op
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "getBootCoordinator")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetBootCoordinator is a free data retrieval call binding the contract method 0xb5f7f2f0.
@@ -389,7 +390,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) GetClaimableHEZ(opts
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "getClaimableHEZ", bidder)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetClaimableHEZ is a free data retrieval call binding the contract method 0x5cca4903.
@@ -415,7 +416,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) GetClosedAuctionSlots
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "getClosedAuctionSlots")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetClosedAuctionSlots is a free data retrieval call binding the contract method 0x4da9639d.
@@ -441,7 +442,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) GetCurrentSlotNumber(
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "getCurrentSlotNumber")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetCurrentSlotNumber is a free data retrieval call binding the contract method 0x0c4da4f6.
@@ -467,7 +468,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) GetDefaultSlotSetBid(
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "getDefaultSlotSetBid", slotSet)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetDefaultSlotSetBid is a free data retrieval call binding the contract method 0x564e6a71.
@@ -493,7 +494,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) GetDonationAddress(op
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "getDonationAddress")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetDonationAddress is a free data retrieval call binding the contract method 0x54c03ab7.
@@ -519,7 +520,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) GetMinBidBySlot(opts
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "getMinBidBySlot", slot)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetMinBidBySlot is a free data retrieval call binding the contract method 0x37d1bd0b.
@@ -545,7 +546,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) GetOpenAuctionSlots(o
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "getOpenAuctionSlots")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetOpenAuctionSlots is a free data retrieval call binding the contract method 0xac4b9012.
@@ -571,7 +572,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) GetOutbidding(opts *b
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "getOutbidding")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetOutbidding is a free data retrieval call binding the contract method 0x55b442e6.
@@ -597,7 +598,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) GetSlotDeadline(opts
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "getSlotDeadline")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetSlotDeadline is a free data retrieval call binding the contract method 0x13de9af2.
@@ -623,7 +624,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) GetSlotNumber(opts *b
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "getSlotNumber", blockNumber)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetSlotNumber is a free data retrieval call binding the contract method 0xb3dc7bb1.
@@ -649,7 +650,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) GetSlotSet(opts *bind
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "getSlotSet", slot)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetSlotSet is a free data retrieval call binding the contract method 0xac5f658b.
@@ -675,7 +676,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) HermezRollup(opts *bi
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "hermezRollup")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // HermezRollup is a free data retrieval call binding the contract method 0xaebd6d98.
@@ -701,7 +702,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) PendingBalances(opts
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "pendingBalances", arg0)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // PendingBalances is a free data retrieval call binding the contract method 0xecdae41b.
@@ -735,7 +736,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) Slots(opts *bind.Call
 	})
 	out := ret
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "slots", arg0)
-	return *ret, err
+	return *ret, tracerr.Wrap(err)
 }
 
 // Slots is a free data retrieval call binding the contract method 0xbc415567.
@@ -771,7 +772,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolCaller) TokenHEZ(opts *bind.C
 	)
 	out := ret0
 	err := _HermezAuctionProtocol.contract.Call(opts, out, "tokenHEZ")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // TokenHEZ is a free data retrieval call binding the contract method 0x79a135e3.
@@ -1168,7 +1169,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) FilterHEZClaimed(op
 
 	logs, sub, err := _HermezAuctionProtocol.contract.FilterLogs(opts, "HEZClaimed", ownerRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolHEZClaimedIterator{contract: _HermezAuctionProtocol.contract, event: "HEZClaimed", logs: logs, sub: sub}, nil
 }
@@ -1185,7 +1186,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchHEZClaimed(opt
 
 	logs, sub, err := _HermezAuctionProtocol.contract.WatchLogs(opts, "HEZClaimed", ownerRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1195,19 +1196,19 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchHEZClaimed(opt
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezAuctionProtocolHEZClaimed)
 				if err := _HermezAuctionProtocol.contract.UnpackLog(event, "HEZClaimed", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1221,7 +1222,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchHEZClaimed(opt
 func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) ParseHEZClaimed(log types.Log) (*HermezAuctionProtocolHEZClaimed, error) {
 	event := new(HermezAuctionProtocolHEZClaimed)
 	if err := _HermezAuctionProtocol.contract.UnpackLog(event, "HEZClaimed", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1306,7 +1307,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) FilterNewAllocation
 
 	logs, sub, err := _HermezAuctionProtocol.contract.FilterLogs(opts, "NewAllocationRatio")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolNewAllocationRatioIterator{contract: _HermezAuctionProtocol.contract, event: "NewAllocationRatio", logs: logs, sub: sub}, nil
 }
@@ -1318,7 +1319,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewAllocationR
 
 	logs, sub, err := _HermezAuctionProtocol.contract.WatchLogs(opts, "NewAllocationRatio")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1328,19 +1329,19 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewAllocationR
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezAuctionProtocolNewAllocationRatio)
 				if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewAllocationRatio", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1354,7 +1355,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewAllocationR
 func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) ParseNewAllocationRatio(log types.Log) (*HermezAuctionProtocolNewAllocationRatio, error) {
 	event := new(HermezAuctionProtocolNewAllocationRatio)
 	if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewAllocationRatio", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1451,7 +1452,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) FilterNewBid(opts *
 
 	logs, sub, err := _HermezAuctionProtocol.contract.FilterLogs(opts, "NewBid", slotRule, bidderRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolNewBidIterator{contract: _HermezAuctionProtocol.contract, event: "NewBid", logs: logs, sub: sub}, nil
 }
@@ -1473,7 +1474,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewBid(opts *b
 
 	logs, sub, err := _HermezAuctionProtocol.contract.WatchLogs(opts, "NewBid", slotRule, bidderRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1483,19 +1484,19 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewBid(opts *b
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezAuctionProtocolNewBid)
 				if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewBid", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1509,7 +1510,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewBid(opts *b
 func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) ParseNewBid(log types.Log) (*HermezAuctionProtocolNewBid, error) {
 	event := new(HermezAuctionProtocolNewBid)
 	if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewBid", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1599,7 +1600,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) FilterNewBootCoordi
 
 	logs, sub, err := _HermezAuctionProtocol.contract.FilterLogs(opts, "NewBootCoordinator", newBootCoordinatorRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolNewBootCoordinatorIterator{contract: _HermezAuctionProtocol.contract, event: "NewBootCoordinator", logs: logs, sub: sub}, nil
 }
@@ -1616,7 +1617,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewBootCoordin
 
 	logs, sub, err := _HermezAuctionProtocol.contract.WatchLogs(opts, "NewBootCoordinator", newBootCoordinatorRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1626,19 +1627,19 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewBootCoordin
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezAuctionProtocolNewBootCoordinator)
 				if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewBootCoordinator", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1652,7 +1653,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewBootCoordin
 func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) ParseNewBootCoordinator(log types.Log) (*HermezAuctionProtocolNewBootCoordinator, error) {
 	event := new(HermezAuctionProtocolNewBootCoordinator)
 	if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewBootCoordinator", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1737,7 +1738,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) FilterNewClosedAuct
 
 	logs, sub, err := _HermezAuctionProtocol.contract.FilterLogs(opts, "NewClosedAuctionSlots")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolNewClosedAuctionSlotsIterator{contract: _HermezAuctionProtocol.contract, event: "NewClosedAuctionSlots", logs: logs, sub: sub}, nil
 }
@@ -1749,7 +1750,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewClosedAucti
 
 	logs, sub, err := _HermezAuctionProtocol.contract.WatchLogs(opts, "NewClosedAuctionSlots")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1759,19 +1760,19 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewClosedAucti
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezAuctionProtocolNewClosedAuctionSlots)
 				if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewClosedAuctionSlots", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1785,7 +1786,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewClosedAucti
 func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) ParseNewClosedAuctionSlots(log types.Log) (*HermezAuctionProtocolNewClosedAuctionSlots, error) {
 	event := new(HermezAuctionProtocolNewClosedAuctionSlots)
 	if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewClosedAuctionSlots", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1871,7 +1872,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) FilterNewDefaultSlo
 
 	logs, sub, err := _HermezAuctionProtocol.contract.FilterLogs(opts, "NewDefaultSlotSetBid")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolNewDefaultSlotSetBidIterator{contract: _HermezAuctionProtocol.contract, event: "NewDefaultSlotSetBid", logs: logs, sub: sub}, nil
 }
@@ -1883,7 +1884,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewDefaultSlot
 
 	logs, sub, err := _HermezAuctionProtocol.contract.WatchLogs(opts, "NewDefaultSlotSetBid")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1893,19 +1894,19 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewDefaultSlot
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezAuctionProtocolNewDefaultSlotSetBid)
 				if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewDefaultSlotSetBid", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1919,7 +1920,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewDefaultSlot
 func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) ParseNewDefaultSlotSetBid(log types.Log) (*HermezAuctionProtocolNewDefaultSlotSetBid, error) {
 	event := new(HermezAuctionProtocolNewDefaultSlotSetBid)
 	if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewDefaultSlotSetBid", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -2009,7 +2010,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) FilterNewDonationAd
 
 	logs, sub, err := _HermezAuctionProtocol.contract.FilterLogs(opts, "NewDonationAddress", newDonationAddressRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolNewDonationAddressIterator{contract: _HermezAuctionProtocol.contract, event: "NewDonationAddress", logs: logs, sub: sub}, nil
 }
@@ -2026,7 +2027,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewDonationAdd
 
 	logs, sub, err := _HermezAuctionProtocol.contract.WatchLogs(opts, "NewDonationAddress", newDonationAddressRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -2036,19 +2037,19 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewDonationAdd
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezAuctionProtocolNewDonationAddress)
 				if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewDonationAddress", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -2062,7 +2063,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewDonationAdd
 func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) ParseNewDonationAddress(log types.Log) (*HermezAuctionProtocolNewDonationAddress, error) {
 	event := new(HermezAuctionProtocolNewDonationAddress)
 	if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewDonationAddress", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -2157,7 +2158,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) FilterNewForge(opts
 
 	logs, sub, err := _HermezAuctionProtocol.contract.FilterLogs(opts, "NewForge", forgerRule, slotToForgeRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolNewForgeIterator{contract: _HermezAuctionProtocol.contract, event: "NewForge", logs: logs, sub: sub}, nil
 }
@@ -2178,7 +2179,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewForge(opts
 
 	logs, sub, err := _HermezAuctionProtocol.contract.WatchLogs(opts, "NewForge", forgerRule, slotToForgeRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -2188,19 +2189,19 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewForge(opts
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezAuctionProtocolNewForge)
 				if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewForge", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -2214,7 +2215,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewForge(opts
 func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) ParseNewForge(log types.Log) (*HermezAuctionProtocolNewForge, error) {
 	event := new(HermezAuctionProtocolNewForge)
 	if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewForge", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -2317,7 +2318,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) FilterNewForgeAlloc
 
 	logs, sub, err := _HermezAuctionProtocol.contract.FilterLogs(opts, "NewForgeAllocated", bidderRule, forgerRule, slotToForgeRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolNewForgeAllocatedIterator{contract: _HermezAuctionProtocol.contract, event: "NewForgeAllocated", logs: logs, sub: sub}, nil
 }
@@ -2342,7 +2343,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewForgeAlloca
 
 	logs, sub, err := _HermezAuctionProtocol.contract.WatchLogs(opts, "NewForgeAllocated", bidderRule, forgerRule, slotToForgeRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -2352,19 +2353,19 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewForgeAlloca
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezAuctionProtocolNewForgeAllocated)
 				if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewForgeAllocated", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -2378,7 +2379,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewForgeAlloca
 func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) ParseNewForgeAllocated(log types.Log) (*HermezAuctionProtocolNewForgeAllocated, error) {
 	event := new(HermezAuctionProtocolNewForgeAllocated)
 	if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewForgeAllocated", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -2463,7 +2464,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) FilterNewOpenAuctio
 
 	logs, sub, err := _HermezAuctionProtocol.contract.FilterLogs(opts, "NewOpenAuctionSlots")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolNewOpenAuctionSlotsIterator{contract: _HermezAuctionProtocol.contract, event: "NewOpenAuctionSlots", logs: logs, sub: sub}, nil
 }
@@ -2475,7 +2476,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewOpenAuction
 
 	logs, sub, err := _HermezAuctionProtocol.contract.WatchLogs(opts, "NewOpenAuctionSlots")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -2485,19 +2486,19 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewOpenAuction
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezAuctionProtocolNewOpenAuctionSlots)
 				if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewOpenAuctionSlots", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -2511,7 +2512,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewOpenAuction
 func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) ParseNewOpenAuctionSlots(log types.Log) (*HermezAuctionProtocolNewOpenAuctionSlots, error) {
 	event := new(HermezAuctionProtocolNewOpenAuctionSlots)
 	if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewOpenAuctionSlots", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -2596,7 +2597,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) FilterNewOutbidding
 
 	logs, sub, err := _HermezAuctionProtocol.contract.FilterLogs(opts, "NewOutbidding")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolNewOutbiddingIterator{contract: _HermezAuctionProtocol.contract, event: "NewOutbidding", logs: logs, sub: sub}, nil
 }
@@ -2608,7 +2609,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewOutbidding(
 
 	logs, sub, err := _HermezAuctionProtocol.contract.WatchLogs(opts, "NewOutbidding")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -2618,19 +2619,19 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewOutbidding(
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezAuctionProtocolNewOutbidding)
 				if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewOutbidding", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -2644,7 +2645,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewOutbidding(
 func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) ParseNewOutbidding(log types.Log) (*HermezAuctionProtocolNewOutbidding, error) {
 	event := new(HermezAuctionProtocolNewOutbidding)
 	if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewOutbidding", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -2729,7 +2730,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) FilterNewSlotDeadli
 
 	logs, sub, err := _HermezAuctionProtocol.contract.FilterLogs(opts, "NewSlotDeadline")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolNewSlotDeadlineIterator{contract: _HermezAuctionProtocol.contract, event: "NewSlotDeadline", logs: logs, sub: sub}, nil
 }
@@ -2741,7 +2742,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewSlotDeadlin
 
 	logs, sub, err := _HermezAuctionProtocol.contract.WatchLogs(opts, "NewSlotDeadline")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -2751,19 +2752,19 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewSlotDeadlin
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezAuctionProtocolNewSlotDeadline)
 				if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewSlotDeadline", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -2777,7 +2778,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchNewSlotDeadlin
 func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) ParseNewSlotDeadline(log types.Log) (*HermezAuctionProtocolNewSlotDeadline, error) {
 	event := new(HermezAuctionProtocolNewSlotDeadline)
 	if err := _HermezAuctionProtocol.contract.UnpackLog(event, "NewSlotDeadline", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -2873,7 +2874,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) FilterSetCoordinato
 
 	logs, sub, err := _HermezAuctionProtocol.contract.FilterLogs(opts, "SetCoordinator", bidderRule, forgerRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAuctionProtocolSetCoordinatorIterator{contract: _HermezAuctionProtocol.contract, event: "SetCoordinator", logs: logs, sub: sub}, nil
 }
@@ -2894,7 +2895,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchSetCoordinator
 
 	logs, sub, err := _HermezAuctionProtocol.contract.WatchLogs(opts, "SetCoordinator", bidderRule, forgerRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -2904,19 +2905,19 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchSetCoordinator
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezAuctionProtocolSetCoordinator)
 				if err := _HermezAuctionProtocol.contract.UnpackLog(event, "SetCoordinator", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -2930,7 +2931,7 @@ func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) WatchSetCoordinator
 func (_HermezAuctionProtocol *HermezAuctionProtocolFilterer) ParseSetCoordinator(log types.Log) (*HermezAuctionProtocolSetCoordinator, error) {
 	event := new(HermezAuctionProtocolSetCoordinator)
 	if err := _HermezAuctionProtocol.contract.UnpackLog(event, "SetCoordinator", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }

eth/contracts/hermez/Hermez.go

@@ -13,6 +13,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/event"
+	"github.com/hermeznetwork/tracerr"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -36,12 +37,12 @@ var HermezBin = "0x608060405234801561001057600080fd5b506158f6806100206000396000f
 func DeployHermez(auth *bind.TransactOpts, backend bind.ContractBackend) (common.Address, *types.Transaction, *Hermez, error) {
 	parsed, err := abi.JSON(strings.NewReader(HermezABI))
 	if err != nil {
-		return common.Address{}, nil, nil, err
+		return common.Address{}, nil, nil, tracerr.Wrap(err)
 	}
 
 	address, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(HermezBin), backend)
 	if err != nil {
-		return common.Address{}, nil, nil, err
+		return common.Address{}, nil, nil, tracerr.Wrap(err)
 	}
 	return address, tx, &Hermez{HermezCaller: HermezCaller{contract: contract}, HermezTransactor: HermezTransactor{contract: contract}, HermezFilterer: HermezFilterer{contract: contract}}, nil
 }
@@ -109,7 +110,7 @@ type HermezTransactorRaw struct {
 func NewHermez(address common.Address, backend bind.ContractBackend) (*Hermez, error) {
 	contract, err := bindHermez(address, backend, backend, backend)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &Hermez{HermezCaller: HermezCaller{contract: contract}, HermezTransactor: HermezTransactor{contract: contract}, HermezFilterer: HermezFilterer{contract: contract}}, nil
 }
@@ -118,7 +119,7 @@ func NewHermez(address common.Address, backend bind.ContractBackend) (*Hermez, e
 func NewHermezCaller(address common.Address, caller bind.ContractCaller) (*HermezCaller, error) {
 	contract, err := bindHermez(address, caller, nil, nil)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezCaller{contract: contract}, nil
 }
@@ -127,7 +128,7 @@ func NewHermezCaller(address common.Address, caller bind.ContractCaller) (*Herme
 func NewHermezTransactor(address common.Address, transactor bind.ContractTransactor) (*HermezTransactor, error) {
 	contract, err := bindHermez(address, nil, transactor, nil)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezTransactor{contract: contract}, nil
 }
@@ -136,7 +137,7 @@ func NewHermezTransactor(address common.Address, transactor bind.ContractTransac
 func NewHermezFilterer(address common.Address, filterer bind.ContractFilterer) (*HermezFilterer, error) {
 	contract, err := bindHermez(address, nil, nil, filterer)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezFilterer{contract: contract}, nil
 }
@@ -145,7 +146,7 @@ func NewHermezFilterer(address common.Address, filterer bind.ContractFilterer) (
 func bindHermez(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor, filterer bind.ContractFilterer) (*bind.BoundContract, error) {
 	parsed, err := abi.JSON(strings.NewReader(HermezABI))
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return bind.NewBoundContract(address, parsed, caller, transactor, filterer), nil
 }
@@ -197,7 +198,7 @@ func (_Hermez *HermezCaller) ABSOLUTEMAXL1L2BATCHTIMEOUT(opts *bind.CallOpts) (u
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "ABSOLUTE_MAX_L1L2BATCHTIMEOUT")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // ABSOLUTEMAXL1L2BATCHTIMEOUT is a free data retrieval call binding the contract method 0x95a09f2a.
@@ -233,7 +234,7 @@ func (_Hermez *HermezCaller) Buckets(opts *bind.CallOpts, arg0 *big.Int) (struct
 	})
 	out := ret
 	err := _Hermez.contract.Call(opts, out, "buckets", arg0)
-	return *ret, err
+	return *ret, tracerr.Wrap(err)
 }
 
 // Buckets is a free data retrieval call binding the contract method 0x9b51fb0d.
@@ -271,7 +272,7 @@ func (_Hermez *HermezCaller) ExitNullifierMap(opts *bind.CallOpts, arg0 uint64,
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "exitNullifierMap", arg0, arg1)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // ExitNullifierMap is a free data retrieval call binding the contract method 0xe9b5269c.
@@ -297,7 +298,7 @@ func (_Hermez *HermezCaller) ExitRootsMap(opts *bind.CallOpts, arg0 uint64) (*bi
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "exitRootsMap", arg0)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // ExitRootsMap is a free data retrieval call binding the contract method 0x506d5463.
@@ -323,7 +324,7 @@ func (_Hermez *HermezCaller) FeeAddToken(opts *bind.CallOpts) (*big.Int, error)
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "feeAddToken")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // FeeAddToken is a free data retrieval call binding the contract method 0xbded9bb8.
@@ -349,7 +350,7 @@ func (_Hermez *HermezCaller) ForgeL1L2BatchTimeout(opts *bind.CallOpts) (uint8,
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "forgeL1L2BatchTimeout")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // ForgeL1L2BatchTimeout is a free data retrieval call binding the contract method 0xa3275838.
@@ -375,7 +376,7 @@ func (_Hermez *HermezCaller) HermezAuctionContract(opts *bind.CallOpts) (common.
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "hermezAuctionContract")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // HermezAuctionContract is a free data retrieval call binding the contract method 0x2bd83626.
@@ -401,7 +402,7 @@ func (_Hermez *HermezCaller) HermezGovernanceDAOAddress(opts *bind.CallOpts) (co
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "hermezGovernanceDAOAddress")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // HermezGovernanceDAOAddress is a free data retrieval call binding the contract method 0xdd46bf84.
@@ -427,7 +428,7 @@ func (_Hermez *HermezCaller) InstantWithdrawalViewer(opts *bind.CallOpts, tokenA
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "instantWithdrawalViewer", tokenAddress, amount)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // InstantWithdrawalViewer is a free data retrieval call binding the contract method 0x375110aa.
@@ -453,7 +454,7 @@ func (_Hermez *HermezCaller) LastForgedBatch(opts *bind.CallOpts) (uint64, error
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "lastForgedBatch")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // LastForgedBatch is a free data retrieval call binding the contract method 0x44e0b2ce.
@@ -479,7 +480,7 @@ func (_Hermez *HermezCaller) LastIdx(opts *bind.CallOpts) (*big.Int, error) {
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "lastIdx")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // LastIdx is a free data retrieval call binding the contract method 0xd486645c.
@@ -505,7 +506,7 @@ func (_Hermez *HermezCaller) LastL1L2Batch(opts *bind.CallOpts) (uint64, error)
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "lastL1L2Batch")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // LastL1L2Batch is a free data retrieval call binding the contract method 0x84ef9ed4.
@@ -531,7 +532,7 @@ func (_Hermez *HermezCaller) MapL1TxQueue(opts *bind.CallOpts, arg0 uint64) ([]b
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "mapL1TxQueue", arg0)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // MapL1TxQueue is a free data retrieval call binding the contract method 0xe796fcf3.
@@ -557,7 +558,7 @@ func (_Hermez *HermezCaller) NextL1FillingQueue(opts *bind.CallOpts) (uint64, er
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "nextL1FillingQueue")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // NextL1FillingQueue is a free data retrieval call binding the contract method 0x0ee8e52b.
@@ -583,7 +584,7 @@ func (_Hermez *HermezCaller) NextL1ToForgeQueue(opts *bind.CallOpts) (uint64, er
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "nextL1ToForgeQueue")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // NextL1ToForgeQueue is a free data retrieval call binding the contract method 0xd0f32e67.
@@ -609,7 +610,7 @@ func (_Hermez *HermezCaller) RegisterTokensCount(opts *bind.CallOpts) (*big.Int,
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "registerTokensCount")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // RegisterTokensCount is a free data retrieval call binding the contract method 0x9f34e9a3.
@@ -641,7 +642,7 @@ func (_Hermez *HermezCaller) RollupVerifiers(opts *bind.CallOpts, arg0 *big.Int)
 	})
 	out := ret
 	err := _Hermez.contract.Call(opts, out, "rollupVerifiers", arg0)
-	return *ret, err
+	return *ret, tracerr.Wrap(err)
 }
 
 // RollupVerifiers is a free data retrieval call binding the contract method 0x38330200.
@@ -675,7 +676,7 @@ func (_Hermez *HermezCaller) SafetyAddress(opts *bind.CallOpts) (common.Address,
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "safetyAddress")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // SafetyAddress is a free data retrieval call binding the contract method 0xe56e27ae.
@@ -701,7 +702,7 @@ func (_Hermez *HermezCaller) StateRootMap(opts *bind.CallOpts, arg0 uint64) (*bi
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "stateRootMap", arg0)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // StateRootMap is a free data retrieval call binding the contract method 0x86c6acc1.
@@ -727,7 +728,7 @@ func (_Hermez *HermezCaller) TokenExchange(opts *bind.CallOpts, arg0 common.Addr
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "tokenExchange", arg0)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // TokenExchange is a free data retrieval call binding the contract method 0x0dd94b96.
@@ -753,7 +754,7 @@ func (_Hermez *HermezCaller) TokenHEZ(opts *bind.CallOpts) (common.Address, erro
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "tokenHEZ")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // TokenHEZ is a free data retrieval call binding the contract method 0x79a135e3.
@@ -779,7 +780,7 @@ func (_Hermez *HermezCaller) TokenList(opts *bind.CallOpts, arg0 *big.Int) (comm
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "tokenList", arg0)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // TokenList is a free data retrieval call binding the contract method 0x9ead7222.
@@ -805,7 +806,7 @@ func (_Hermez *HermezCaller) TokenMap(opts *bind.CallOpts, arg0 common.Address)
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "tokenMap", arg0)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // TokenMap is a free data retrieval call binding the contract method 0x004aca6e.
@@ -831,7 +832,7 @@ func (_Hermez *HermezCaller) WithdrawDelayerContract(opts *bind.CallOpts) (commo
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "withdrawDelayerContract")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // WithdrawDelayerContract is a free data retrieval call binding the contract method 0x1b0a8223.
@@ -857,7 +858,7 @@ func (_Hermez *HermezCaller) WithdrawVerifier(opts *bind.CallOpts) (common.Addre
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "withdrawVerifier")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // WithdrawVerifier is a free data retrieval call binding the contract method 0x864eb164.
@@ -883,7 +884,7 @@ func (_Hermez *HermezCaller) WithdrawalDelay(opts *bind.CallOpts) (uint64, error
 	)
 	out := ret0
 	err := _Hermez.contract.Call(opts, out, "withdrawalDelay")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // WithdrawalDelay is a free data retrieval call binding the contract method 0xa7ab6961.
@@ -1238,7 +1239,7 @@ func (_Hermez *HermezFilterer) FilterAddToken(opts *bind.FilterOpts, tokenAddres
 
 	logs, sub, err := _Hermez.contract.FilterLogs(opts, "AddToken", tokenAddressRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezAddTokenIterator{contract: _Hermez.contract, event: "AddToken", logs: logs, sub: sub}, nil
 }
@@ -1255,7 +1256,7 @@ func (_Hermez *HermezFilterer) WatchAddToken(opts *bind.WatchOpts, sink chan<- *
 
 	logs, sub, err := _Hermez.contract.WatchLogs(opts, "AddToken", tokenAddressRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1265,19 +1266,19 @@ func (_Hermez *HermezFilterer) WatchAddToken(opts *bind.WatchOpts, sink chan<- *
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezAddToken)
 				if err := _Hermez.contract.UnpackLog(event, "AddToken", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1291,7 +1292,7 @@ func (_Hermez *HermezFilterer) WatchAddToken(opts *bind.WatchOpts, sink chan<- *
 func (_Hermez *HermezFilterer) ParseAddToken(log types.Log) (*HermezAddToken, error) {
 	event := new(HermezAddToken)
 	if err := _Hermez.contract.UnpackLog(event, "AddToken", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1381,7 +1382,7 @@ func (_Hermez *HermezFilterer) FilterForgeBatch(opts *bind.FilterOpts, batchNum
 
 	logs, sub, err := _Hermez.contract.FilterLogs(opts, "ForgeBatch", batchNumRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezForgeBatchIterator{contract: _Hermez.contract, event: "ForgeBatch", logs: logs, sub: sub}, nil
 }
@@ -1398,7 +1399,7 @@ func (_Hermez *HermezFilterer) WatchForgeBatch(opts *bind.WatchOpts, sink chan<-
 
 	logs, sub, err := _Hermez.contract.WatchLogs(opts, "ForgeBatch", batchNumRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1408,19 +1409,19 @@ func (_Hermez *HermezFilterer) WatchForgeBatch(opts *bind.WatchOpts, sink chan<-
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezForgeBatch)
 				if err := _Hermez.contract.UnpackLog(event, "ForgeBatch", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1434,7 +1435,7 @@ func (_Hermez *HermezFilterer) WatchForgeBatch(opts *bind.WatchOpts, sink chan<-
 func (_Hermez *HermezFilterer) ParseForgeBatch(log types.Log) (*HermezForgeBatch, error) {
 	event := new(HermezForgeBatch)
 	if err := _Hermez.contract.UnpackLog(event, "ForgeBatch", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1530,7 +1531,7 @@ func (_Hermez *HermezFilterer) FilterL1UserTxEvent(opts *bind.FilterOpts, queueI
 
 	logs, sub, err := _Hermez.contract.FilterLogs(opts, "L1UserTxEvent", queueIndexRule, positionRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezL1UserTxEventIterator{contract: _Hermez.contract, event: "L1UserTxEvent", logs: logs, sub: sub}, nil
 }
@@ -1551,7 +1552,7 @@ func (_Hermez *HermezFilterer) WatchL1UserTxEvent(opts *bind.WatchOpts, sink cha
 
 	logs, sub, err := _Hermez.contract.WatchLogs(opts, "L1UserTxEvent", queueIndexRule, positionRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1561,19 +1562,19 @@ func (_Hermez *HermezFilterer) WatchL1UserTxEvent(opts *bind.WatchOpts, sink cha
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezL1UserTxEvent)
 				if err := _Hermez.contract.UnpackLog(event, "L1UserTxEvent", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1587,7 +1588,7 @@ func (_Hermez *HermezFilterer) WatchL1UserTxEvent(opts *bind.WatchOpts, sink cha
 func (_Hermez *HermezFilterer) ParseL1UserTxEvent(log types.Log) (*HermezL1UserTxEvent, error) {
 	event := new(HermezL1UserTxEvent)
 	if err := _Hermez.contract.UnpackLog(event, "L1UserTxEvent", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1671,7 +1672,7 @@ func (_Hermez *HermezFilterer) FilterSafeMode(opts *bind.FilterOpts) (*HermezSaf
 
 	logs, sub, err := _Hermez.contract.FilterLogs(opts, "SafeMode")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezSafeModeIterator{contract: _Hermez.contract, event: "SafeMode", logs: logs, sub: sub}, nil
 }
@@ -1683,7 +1684,7 @@ func (_Hermez *HermezFilterer) WatchSafeMode(opts *bind.WatchOpts, sink chan<- *
 
 	logs, sub, err := _Hermez.contract.WatchLogs(opts, "SafeMode")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1693,19 +1694,19 @@ func (_Hermez *HermezFilterer) WatchSafeMode(opts *bind.WatchOpts, sink chan<- *
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezSafeMode)
 				if err := _Hermez.contract.UnpackLog(event, "SafeMode", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1719,7 +1720,7 @@ func (_Hermez *HermezFilterer) WatchSafeMode(opts *bind.WatchOpts, sink chan<- *
 func (_Hermez *HermezFilterer) ParseSafeMode(log types.Log) (*HermezSafeMode, error) {
 	event := new(HermezSafeMode)
 	if err := _Hermez.contract.UnpackLog(event, "SafeMode", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1815,7 +1816,7 @@ func (_Hermez *HermezFilterer) FilterUpdateBucketWithdraw(opts *bind.FilterOpts,
 
 	logs, sub, err := _Hermez.contract.FilterLogs(opts, "UpdateBucketWithdraw", numBucketRule, blockStampRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezUpdateBucketWithdrawIterator{contract: _Hermez.contract, event: "UpdateBucketWithdraw", logs: logs, sub: sub}, nil
 }
@@ -1836,7 +1837,7 @@ func (_Hermez *HermezFilterer) WatchUpdateBucketWithdraw(opts *bind.WatchOpts, s
 
 	logs, sub, err := _Hermez.contract.WatchLogs(opts, "UpdateBucketWithdraw", numBucketRule, blockStampRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1846,19 +1847,19 @@ func (_Hermez *HermezFilterer) WatchUpdateBucketWithdraw(opts *bind.WatchOpts, s
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezUpdateBucketWithdraw)
 				if err := _Hermez.contract.UnpackLog(event, "UpdateBucketWithdraw", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1872,7 +1873,7 @@ func (_Hermez *HermezFilterer) WatchUpdateBucketWithdraw(opts *bind.WatchOpts, s
 func (_Hermez *HermezFilterer) ParseUpdateBucketWithdraw(log types.Log) (*HermezUpdateBucketWithdraw, error) {
 	event := new(HermezUpdateBucketWithdraw)
 	if err := _Hermez.contract.UnpackLog(event, "UpdateBucketWithdraw", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1957,7 +1958,7 @@ func (_Hermez *HermezFilterer) FilterUpdateBucketsParameters(opts *bind.FilterOp
 
 	logs, sub, err := _Hermez.contract.FilterLogs(opts, "UpdateBucketsParameters")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezUpdateBucketsParametersIterator{contract: _Hermez.contract, event: "UpdateBucketsParameters", logs: logs, sub: sub}, nil
 }
@@ -1969,7 +1970,7 @@ func (_Hermez *HermezFilterer) WatchUpdateBucketsParameters(opts *bind.WatchOpts
 
 	logs, sub, err := _Hermez.contract.WatchLogs(opts, "UpdateBucketsParameters")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1979,19 +1980,19 @@ func (_Hermez *HermezFilterer) WatchUpdateBucketsParameters(opts *bind.WatchOpts
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezUpdateBucketsParameters)
 				if err := _Hermez.contract.UnpackLog(event, "UpdateBucketsParameters", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -2005,7 +2006,7 @@ func (_Hermez *HermezFilterer) WatchUpdateBucketsParameters(opts *bind.WatchOpts
 func (_Hermez *HermezFilterer) ParseUpdateBucketsParameters(log types.Log) (*HermezUpdateBucketsParameters, error) {
 	event := new(HermezUpdateBucketsParameters)
 	if err := _Hermez.contract.UnpackLog(event, "UpdateBucketsParameters", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -2090,7 +2091,7 @@ func (_Hermez *HermezFilterer) FilterUpdateFeeAddToken(opts *bind.FilterOpts) (*
 
 	logs, sub, err := _Hermez.contract.FilterLogs(opts, "UpdateFeeAddToken")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezUpdateFeeAddTokenIterator{contract: _Hermez.contract, event: "UpdateFeeAddToken", logs: logs, sub: sub}, nil
 }
@@ -2102,7 +2103,7 @@ func (_Hermez *HermezFilterer) WatchUpdateFeeAddToken(opts *bind.WatchOpts, sink
 
 	logs, sub, err := _Hermez.contract.WatchLogs(opts, "UpdateFeeAddToken")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -2112,19 +2113,19 @@ func (_Hermez *HermezFilterer) WatchUpdateFeeAddToken(opts *bind.WatchOpts, sink
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezUpdateFeeAddToken)
 				if err := _Hermez.contract.UnpackLog(event, "UpdateFeeAddToken", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -2138,7 +2139,7 @@ func (_Hermez *HermezFilterer) WatchUpdateFeeAddToken(opts *bind.WatchOpts, sink
 func (_Hermez *HermezFilterer) ParseUpdateFeeAddToken(log types.Log) (*HermezUpdateFeeAddToken, error) {
 	event := new(HermezUpdateFeeAddToken)
 	if err := _Hermez.contract.UnpackLog(event, "UpdateFeeAddToken", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -2223,7 +2224,7 @@ func (_Hermez *HermezFilterer) FilterUpdateForgeL1L2BatchTimeout(opts *bind.Filt
 
 	logs, sub, err := _Hermez.contract.FilterLogs(opts, "UpdateForgeL1L2BatchTimeout")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezUpdateForgeL1L2BatchTimeoutIterator{contract: _Hermez.contract, event: "UpdateForgeL1L2BatchTimeout", logs: logs, sub: sub}, nil
 }
@@ -2235,7 +2236,7 @@ func (_Hermez *HermezFilterer) WatchUpdateForgeL1L2BatchTimeout(opts *bind.Watch
 
 	logs, sub, err := _Hermez.contract.WatchLogs(opts, "UpdateForgeL1L2BatchTimeout")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -2245,19 +2246,19 @@ func (_Hermez *HermezFilterer) WatchUpdateForgeL1L2BatchTimeout(opts *bind.Watch
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezUpdateForgeL1L2BatchTimeout)
 				if err := _Hermez.contract.UnpackLog(event, "UpdateForgeL1L2BatchTimeout", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -2271,7 +2272,7 @@ func (_Hermez *HermezFilterer) WatchUpdateForgeL1L2BatchTimeout(opts *bind.Watch
 func (_Hermez *HermezFilterer) ParseUpdateForgeL1L2BatchTimeout(log types.Log) (*HermezUpdateForgeL1L2BatchTimeout, error) {
 	event := new(HermezUpdateForgeL1L2BatchTimeout)
 	if err := _Hermez.contract.UnpackLog(event, "UpdateForgeL1L2BatchTimeout", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -2357,7 +2358,7 @@ func (_Hermez *HermezFilterer) FilterUpdateTokenExchange(opts *bind.FilterOpts)
 
 	logs, sub, err := _Hermez.contract.FilterLogs(opts, "UpdateTokenExchange")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezUpdateTokenExchangeIterator{contract: _Hermez.contract, event: "UpdateTokenExchange", logs: logs, sub: sub}, nil
 }
@@ -2369,7 +2370,7 @@ func (_Hermez *HermezFilterer) WatchUpdateTokenExchange(opts *bind.WatchOpts, si
 
 	logs, sub, err := _Hermez.contract.WatchLogs(opts, "UpdateTokenExchange")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -2379,19 +2380,19 @@ func (_Hermez *HermezFilterer) WatchUpdateTokenExchange(opts *bind.WatchOpts, si
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezUpdateTokenExchange)
 				if err := _Hermez.contract.UnpackLog(event, "UpdateTokenExchange", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -2405,7 +2406,7 @@ func (_Hermez *HermezFilterer) WatchUpdateTokenExchange(opts *bind.WatchOpts, si
 func (_Hermez *HermezFilterer) ParseUpdateTokenExchange(log types.Log) (*HermezUpdateTokenExchange, error) {
 	event := new(HermezUpdateTokenExchange)
 	if err := _Hermez.contract.UnpackLog(event, "UpdateTokenExchange", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -2490,7 +2491,7 @@ func (_Hermez *HermezFilterer) FilterUpdateWithdrawalDelay(opts *bind.FilterOpts
 
 	logs, sub, err := _Hermez.contract.FilterLogs(opts, "UpdateWithdrawalDelay")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezUpdateWithdrawalDelayIterator{contract: _Hermez.contract, event: "UpdateWithdrawalDelay", logs: logs, sub: sub}, nil
 }
@@ -2502,7 +2503,7 @@ func (_Hermez *HermezFilterer) WatchUpdateWithdrawalDelay(opts *bind.WatchOpts,
 
 	logs, sub, err := _Hermez.contract.WatchLogs(opts, "UpdateWithdrawalDelay")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -2512,19 +2513,19 @@ func (_Hermez *HermezFilterer) WatchUpdateWithdrawalDelay(opts *bind.WatchOpts,
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezUpdateWithdrawalDelay)
 				if err := _Hermez.contract.UnpackLog(event, "UpdateWithdrawalDelay", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -2538,7 +2539,7 @@ func (_Hermez *HermezFilterer) WatchUpdateWithdrawalDelay(opts *bind.WatchOpts,
 func (_Hermez *HermezFilterer) ParseUpdateWithdrawalDelay(log types.Log) (*HermezUpdateWithdrawalDelay, error) {
 	event := new(HermezUpdateWithdrawalDelay)
 	if err := _Hermez.contract.UnpackLog(event, "UpdateWithdrawalDelay", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -2638,7 +2639,7 @@ func (_Hermez *HermezFilterer) FilterWithdrawEvent(opts *bind.FilterOpts, idx []
 
 	logs, sub, err := _Hermez.contract.FilterLogs(opts, "WithdrawEvent", idxRule, numExitRootRule, instantWithdrawRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HermezWithdrawEventIterator{contract: _Hermez.contract, event: "WithdrawEvent", logs: logs, sub: sub}, nil
 }
@@ -2663,7 +2664,7 @@ func (_Hermez *HermezFilterer) WatchWithdrawEvent(opts *bind.WatchOpts, sink cha
 
 	logs, sub, err := _Hermez.contract.WatchLogs(opts, "WithdrawEvent", idxRule, numExitRootRule, instantWithdrawRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -2673,19 +2674,19 @@ func (_Hermez *HermezFilterer) WatchWithdrawEvent(opts *bind.WatchOpts, sink cha
 				// New log arrived, parse the event and forward to the user
 				event := new(HermezWithdrawEvent)
 				if err := _Hermez.contract.UnpackLog(event, "WithdrawEvent", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -2699,7 +2700,7 @@ func (_Hermez *HermezFilterer) WatchWithdrawEvent(opts *bind.WatchOpts, sink cha
 func (_Hermez *HermezFilterer) ParseWithdrawEvent(log types.Log) (*HermezWithdrawEvent, error) {
 	event := new(HermezWithdrawEvent)
 	if err := _Hermez.contract.UnpackLog(event, "WithdrawEvent", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }

eth/contracts/tokenHEZ/HEZ.go

@@ -13,6 +13,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/event"
+	"github.com/hermeznetwork/tracerr"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -36,12 +37,12 @@ var HEZBin = "0x608060405234801561001057600080fd5b506040516111153803806111158339
 func DeployHEZ(auth *bind.TransactOpts, backend bind.ContractBackend, initialHolder common.Address) (common.Address, *types.Transaction, *HEZ, error) {
 	parsed, err := abi.JSON(strings.NewReader(HEZABI))
 	if err != nil {
-		return common.Address{}, nil, nil, err
+		return common.Address{}, nil, nil, tracerr.Wrap(err)
 	}
 
 	address, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(HEZBin), backend, initialHolder)
 	if err != nil {
-		return common.Address{}, nil, nil, err
+		return common.Address{}, nil, nil, tracerr.Wrap(err)
 	}
 	return address, tx, &HEZ{HEZCaller: HEZCaller{contract: contract}, HEZTransactor: HEZTransactor{contract: contract}, HEZFilterer: HEZFilterer{contract: contract}}, nil
 }
@@ -109,7 +110,7 @@ type HEZTransactorRaw struct {
 func NewHEZ(address common.Address, backend bind.ContractBackend) (*HEZ, error) {
 	contract, err := bindHEZ(address, backend, backend, backend)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HEZ{HEZCaller: HEZCaller{contract: contract}, HEZTransactor: HEZTransactor{contract: contract}, HEZFilterer: HEZFilterer{contract: contract}}, nil
 }
@@ -118,7 +119,7 @@ func NewHEZ(address common.Address, backend bind.ContractBackend) (*HEZ, error)
 func NewHEZCaller(address common.Address, caller bind.ContractCaller) (*HEZCaller, error) {
 	contract, err := bindHEZ(address, caller, nil, nil)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HEZCaller{contract: contract}, nil
 }
@@ -127,7 +128,7 @@ func NewHEZCaller(address common.Address, caller bind.ContractCaller) (*HEZCalle
 func NewHEZTransactor(address common.Address, transactor bind.ContractTransactor) (*HEZTransactor, error) {
 	contract, err := bindHEZ(address, nil, transactor, nil)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HEZTransactor{contract: contract}, nil
 }
@@ -136,7 +137,7 @@ func NewHEZTransactor(address common.Address, transactor bind.ContractTransactor
 func NewHEZFilterer(address common.Address, filterer bind.ContractFilterer) (*HEZFilterer, error) {
 	contract, err := bindHEZ(address, nil, nil, filterer)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HEZFilterer{contract: contract}, nil
 }
@@ -145,7 +146,7 @@ func NewHEZFilterer(address common.Address, filterer bind.ContractFilterer) (*HE
 func bindHEZ(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor, filterer bind.ContractFilterer) (*bind.BoundContract, error) {
 	parsed, err := abi.JSON(strings.NewReader(HEZABI))
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return bind.NewBoundContract(address, parsed, caller, transactor, filterer), nil
 }
@@ -197,7 +198,7 @@ func (_HEZ *HEZCaller) EIP712DOMAINHASH(opts *bind.CallOpts) ([32]byte, error) {
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "EIP712DOMAIN_HASH")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // EIP712DOMAINHASH is a free data retrieval call binding the contract method 0xc473af33.
@@ -223,7 +224,7 @@ func (_HEZ *HEZCaller) NAMEHASH(opts *bind.CallOpts) ([32]byte, error) {
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "NAME_HASH")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // NAMEHASH is a free data retrieval call binding the contract method 0x04622c2e.
@@ -249,7 +250,7 @@ func (_HEZ *HEZCaller) PERMITTYPEHASH(opts *bind.CallOpts) ([32]byte, error) {
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "PERMIT_TYPEHASH")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // PERMITTYPEHASH is a free data retrieval call binding the contract method 0x30adf81f.
@@ -275,7 +276,7 @@ func (_HEZ *HEZCaller) TRANSFERWITHAUTHORIZATIONTYPEHASH(opts *bind.CallOpts) ([
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "TRANSFER_WITH_AUTHORIZATION_TYPEHASH")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // TRANSFERWITHAUTHORIZATIONTYPEHASH is a free data retrieval call binding the contract method 0xa0cc6a68.
@@ -301,7 +302,7 @@ func (_HEZ *HEZCaller) VERSIONHASH(opts *bind.CallOpts) ([32]byte, error) {
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "VERSION_HASH")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // VERSIONHASH is a free data retrieval call binding the contract method 0x9e4e7318.
@@ -327,7 +328,7 @@ func (_HEZ *HEZCaller) Allowance(opts *bind.CallOpts, arg0 common.Address, arg1
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "allowance", arg0, arg1)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // Allowance is a free data retrieval call binding the contract method 0xdd62ed3e.
@@ -353,7 +354,7 @@ func (_HEZ *HEZCaller) AuthorizationState(opts *bind.CallOpts, arg0 common.Addre
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "authorizationState", arg0, arg1)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // AuthorizationState is a free data retrieval call binding the contract method 0xe94a0102.
@@ -379,7 +380,7 @@ func (_HEZ *HEZCaller) BalanceOf(opts *bind.CallOpts, arg0 common.Address) (*big
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "balanceOf", arg0)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
@@ -405,7 +406,7 @@ func (_HEZ *HEZCaller) Decimals(opts *bind.CallOpts) (uint8, error) {
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "decimals")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // Decimals is a free data retrieval call binding the contract method 0x313ce567.
@@ -431,7 +432,7 @@ func (_HEZ *HEZCaller) GetChainId(opts *bind.CallOpts) (*big.Int, error) {
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "getChainId")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetChainId is a free data retrieval call binding the contract method 0x3408e470.
@@ -457,7 +458,7 @@ func (_HEZ *HEZCaller) InitialBalance(opts *bind.CallOpts) (*big.Int, error) {
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "initialBalance")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // InitialBalance is a free data retrieval call binding the contract method 0x18369a2a.
@@ -483,7 +484,7 @@ func (_HEZ *HEZCaller) Name(opts *bind.CallOpts) (string, error) {
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "name")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // Name is a free data retrieval call binding the contract method 0x06fdde03.
@@ -509,7 +510,7 @@ func (_HEZ *HEZCaller) Nonces(opts *bind.CallOpts, arg0 common.Address) (*big.In
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "nonces", arg0)
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // Nonces is a free data retrieval call binding the contract method 0x7ecebe00.
@@ -535,7 +536,7 @@ func (_HEZ *HEZCaller) Symbol(opts *bind.CallOpts) (string, error) {
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "symbol")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // Symbol is a free data retrieval call binding the contract method 0x95d89b41.
@@ -561,7 +562,7 @@ func (_HEZ *HEZCaller) TotalSupply(opts *bind.CallOpts) (*big.Int, error) {
 	)
 	out := ret0
 	err := _HEZ.contract.Call(opts, out, "totalSupply")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
@@ -795,7 +796,7 @@ func (_HEZ *HEZFilterer) FilterApproval(opts *bind.FilterOpts, owner []common.Ad
 
 	logs, sub, err := _HEZ.contract.FilterLogs(opts, "Approval", ownerRule, spenderRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HEZApprovalIterator{contract: _HEZ.contract, event: "Approval", logs: logs, sub: sub}, nil
 }
@@ -816,7 +817,7 @@ func (_HEZ *HEZFilterer) WatchApproval(opts *bind.WatchOpts, sink chan<- *HEZApp
 
 	logs, sub, err := _HEZ.contract.WatchLogs(opts, "Approval", ownerRule, spenderRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -826,19 +827,19 @@ func (_HEZ *HEZFilterer) WatchApproval(opts *bind.WatchOpts, sink chan<- *HEZApp
 				// New log arrived, parse the event and forward to the user
 				event := new(HEZApproval)
 				if err := _HEZ.contract.UnpackLog(event, "Approval", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -852,7 +853,7 @@ func (_HEZ *HEZFilterer) WatchApproval(opts *bind.WatchOpts, sink chan<- *HEZApp
 func (_HEZ *HEZFilterer) ParseApproval(log types.Log) (*HEZApproval, error) {
 	event := new(HEZApproval)
 	if err := _HEZ.contract.UnpackLog(event, "Approval", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -947,7 +948,7 @@ func (_HEZ *HEZFilterer) FilterAuthorizationUsed(opts *bind.FilterOpts, authoriz
 
 	logs, sub, err := _HEZ.contract.FilterLogs(opts, "AuthorizationUsed", authorizerRule, nonceRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HEZAuthorizationUsedIterator{contract: _HEZ.contract, event: "AuthorizationUsed", logs: logs, sub: sub}, nil
 }
@@ -968,7 +969,7 @@ func (_HEZ *HEZFilterer) WatchAuthorizationUsed(opts *bind.WatchOpts, sink chan<
 
 	logs, sub, err := _HEZ.contract.WatchLogs(opts, "AuthorizationUsed", authorizerRule, nonceRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -978,19 +979,19 @@ func (_HEZ *HEZFilterer) WatchAuthorizationUsed(opts *bind.WatchOpts, sink chan<
 				// New log arrived, parse the event and forward to the user
 				event := new(HEZAuthorizationUsed)
 				if err := _HEZ.contract.UnpackLog(event, "AuthorizationUsed", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1004,7 +1005,7 @@ func (_HEZ *HEZFilterer) WatchAuthorizationUsed(opts *bind.WatchOpts, sink chan<
 func (_HEZ *HEZFilterer) ParseAuthorizationUsed(log types.Log) (*HEZAuthorizationUsed, error) {
 	event := new(HEZAuthorizationUsed)
 	if err := _HEZ.contract.UnpackLog(event, "AuthorizationUsed", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1100,7 +1101,7 @@ func (_HEZ *HEZFilterer) FilterTransfer(opts *bind.FilterOpts, from []common.Add
 
 	logs, sub, err := _HEZ.contract.FilterLogs(opts, "Transfer", fromRule, toRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &HEZTransferIterator{contract: _HEZ.contract, event: "Transfer", logs: logs, sub: sub}, nil
 }
@@ -1121,7 +1122,7 @@ func (_HEZ *HEZFilterer) WatchTransfer(opts *bind.WatchOpts, sink chan<- *HEZTra
 
 	logs, sub, err := _HEZ.contract.WatchLogs(opts, "Transfer", fromRule, toRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1131,19 +1132,19 @@ func (_HEZ *HEZFilterer) WatchTransfer(opts *bind.WatchOpts, sink chan<- *HEZTra
 				// New log arrived, parse the event and forward to the user
 				event := new(HEZTransfer)
 				if err := _HEZ.contract.UnpackLog(event, "Transfer", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1157,7 +1158,7 @@ func (_HEZ *HEZFilterer) WatchTransfer(opts *bind.WatchOpts, sink chan<- *HEZTra
 func (_HEZ *HEZFilterer) ParseTransfer(log types.Log) (*HEZTransfer, error) {
 	event := new(HEZTransfer)
 	if err := _HEZ.contract.UnpackLog(event, "Transfer", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }

eth/contracts/withdrawdelayer/WithdrawalDelayer.go

@@ -13,6 +13,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/event"
+	"github.com/hermeznetwork/tracerr"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -36,12 +37,12 @@ var WithdrawalDelayerBin = "0x608060405234801561001057600080fd5b50611be680610020
 func DeployWithdrawalDelayer(auth *bind.TransactOpts, backend bind.ContractBackend) (common.Address, *types.Transaction, *WithdrawalDelayer, error) {
 	parsed, err := abi.JSON(strings.NewReader(WithdrawalDelayerABI))
 	if err != nil {
-		return common.Address{}, nil, nil, err
+		return common.Address{}, nil, nil, tracerr.Wrap(err)
 	}
 
 	address, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(WithdrawalDelayerBin), backend)
 	if err != nil {
-		return common.Address{}, nil, nil, err
+		return common.Address{}, nil, nil, tracerr.Wrap(err)
 	}
 	return address, tx, &WithdrawalDelayer{WithdrawalDelayerCaller: WithdrawalDelayerCaller{contract: contract}, WithdrawalDelayerTransactor: WithdrawalDelayerTransactor{contract: contract}, WithdrawalDelayerFilterer: WithdrawalDelayerFilterer{contract: contract}}, nil
 }
@@ -109,7 +110,7 @@ type WithdrawalDelayerTransactorRaw struct {
 func NewWithdrawalDelayer(address common.Address, backend bind.ContractBackend) (*WithdrawalDelayer, error) {
 	contract, err := bindWithdrawalDelayer(address, backend, backend, backend)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &WithdrawalDelayer{WithdrawalDelayerCaller: WithdrawalDelayerCaller{contract: contract}, WithdrawalDelayerTransactor: WithdrawalDelayerTransactor{contract: contract}, WithdrawalDelayerFilterer: WithdrawalDelayerFilterer{contract: contract}}, nil
 }
@@ -118,7 +119,7 @@ func NewWithdrawalDelayer(address common.Address, backend bind.ContractBackend)
 func NewWithdrawalDelayerCaller(address common.Address, caller bind.ContractCaller) (*WithdrawalDelayerCaller, error) {
 	contract, err := bindWithdrawalDelayer(address, caller, nil, nil)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &WithdrawalDelayerCaller{contract: contract}, nil
 }
@@ -127,7 +128,7 @@ func NewWithdrawalDelayerCaller(address common.Address, caller bind.ContractCall
 func NewWithdrawalDelayerTransactor(address common.Address, transactor bind.ContractTransactor) (*WithdrawalDelayerTransactor, error) {
 	contract, err := bindWithdrawalDelayer(address, nil, transactor, nil)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &WithdrawalDelayerTransactor{contract: contract}, nil
 }
@@ -136,7 +137,7 @@ func NewWithdrawalDelayerTransactor(address common.Address, transactor bind.Cont
 func NewWithdrawalDelayerFilterer(address common.Address, filterer bind.ContractFilterer) (*WithdrawalDelayerFilterer, error) {
 	contract, err := bindWithdrawalDelayer(address, nil, nil, filterer)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &WithdrawalDelayerFilterer{contract: contract}, nil
 }
@@ -145,7 +146,7 @@ func NewWithdrawalDelayerFilterer(address common.Address, filterer bind.Contract
 func bindWithdrawalDelayer(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor, filterer bind.ContractFilterer) (*bind.BoundContract, error) {
 	parsed, err := abi.JSON(strings.NewReader(WithdrawalDelayerABI))
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return bind.NewBoundContract(address, parsed, caller, transactor, filterer), nil
 }
@@ -197,7 +198,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerCaller) MAXEMERGENCYMODETIME(opts *bi
 	)
 	out := ret0
 	err := _WithdrawalDelayer.contract.Call(opts, out, "MAX_EMERGENCY_MODE_TIME")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // MAXEMERGENCYMODETIME is a free data retrieval call binding the contract method 0xb4b8e39d.
@@ -223,7 +224,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerCaller) MAXWITHDRAWALDELAY(opts *bind
 	)
 	out := ret0
 	err := _WithdrawalDelayer.contract.Call(opts, out, "MAX_WITHDRAWAL_DELAY")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // MAXWITHDRAWALDELAY is a free data retrieval call binding the contract method 0xa238f9df.
@@ -253,7 +254,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerCaller) DepositInfo(opts *bind.CallOp
 		ret1,
 	}
 	err := _WithdrawalDelayer.contract.Call(opts, out, "depositInfo", _owner, _token)
-	return *ret0, *ret1, err
+	return *ret0, *ret1, tracerr.Wrap(err)
 }
 
 // DepositInfo is a free data retrieval call binding the contract method 0x493b0170.
@@ -283,7 +284,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerCaller) Deposits(opts *bind.CallOpts,
 	})
 	out := ret
 	err := _WithdrawalDelayer.contract.Call(opts, out, "deposits", arg0)
-	return *ret, err
+	return *ret, tracerr.Wrap(err)
 }
 
 // Deposits is a free data retrieval call binding the contract method 0x3d4dff7b.
@@ -315,7 +316,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerCaller) GetEmergencyModeStartingTime(
 	)
 	out := ret0
 	err := _WithdrawalDelayer.contract.Call(opts, out, "getEmergencyModeStartingTime")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetEmergencyModeStartingTime is a free data retrieval call binding the contract method 0x668cdd67.
@@ -341,7 +342,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerCaller) GetHermezGovernanceDAOAddress
 	)
 	out := ret0
 	err := _WithdrawalDelayer.contract.Call(opts, out, "getHermezGovernanceDAOAddress")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetHermezGovernanceDAOAddress is a free data retrieval call binding the contract method 0x580fc611.
@@ -367,7 +368,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerCaller) GetHermezKeeperAddress(opts *
 	)
 	out := ret0
 	err := _WithdrawalDelayer.contract.Call(opts, out, "getHermezKeeperAddress")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetHermezKeeperAddress is a free data retrieval call binding the contract method 0x305887f9.
@@ -393,7 +394,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerCaller) GetWhiteHackGroupAddress(opts
 	)
 	out := ret0
 	err := _WithdrawalDelayer.contract.Call(opts, out, "getWhiteHackGroupAddress")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetWhiteHackGroupAddress is a free data retrieval call binding the contract method 0xae7efbbd.
@@ -419,7 +420,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerCaller) GetWithdrawalDelay(opts *bind
 	)
 	out := ret0
 	err := _WithdrawalDelayer.contract.Call(opts, out, "getWithdrawalDelay")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // GetWithdrawalDelay is a free data retrieval call binding the contract method 0x03160940.
@@ -445,7 +446,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerCaller) HermezRollupAddress(opts *bin
 	)
 	out := ret0
 	err := _WithdrawalDelayer.contract.Call(opts, out, "hermezRollupAddress")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // HermezRollupAddress is a free data retrieval call binding the contract method 0x0fd266d7.
@@ -471,7 +472,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerCaller) IsEmergencyMode(opts *bind.Ca
 	)
 	out := ret0
 	err := _WithdrawalDelayer.contract.Call(opts, out, "isEmergencyMode")
-	return *ret0, err
+	return *ret0, tracerr.Wrap(err)
 }
 
 // IsEmergencyMode is a free data retrieval call binding the contract method 0x20a194b8.
@@ -769,7 +770,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) FilterDeposit(opts *bind.Fi
 
 	logs, sub, err := _WithdrawalDelayer.contract.FilterLogs(opts, "Deposit", ownerRule, tokenRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &WithdrawalDelayerDepositIterator{contract: _WithdrawalDelayer.contract, event: "Deposit", logs: logs, sub: sub}, nil
 }
@@ -790,7 +791,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchDeposit(opts *bind.Wat
 
 	logs, sub, err := _WithdrawalDelayer.contract.WatchLogs(opts, "Deposit", ownerRule, tokenRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -800,19 +801,19 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchDeposit(opts *bind.Wat
 				// New log arrived, parse the event and forward to the user
 				event := new(WithdrawalDelayerDeposit)
 				if err := _WithdrawalDelayer.contract.UnpackLog(event, "Deposit", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -826,7 +827,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchDeposit(opts *bind.Wat
 func (_WithdrawalDelayer *WithdrawalDelayerFilterer) ParseDeposit(log types.Log) (*WithdrawalDelayerDeposit, error) {
 	event := new(WithdrawalDelayerDeposit)
 	if err := _WithdrawalDelayer.contract.UnpackLog(event, "Deposit", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -910,7 +911,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) FilterEmergencyModeEnabled(
 
 	logs, sub, err := _WithdrawalDelayer.contract.FilterLogs(opts, "EmergencyModeEnabled")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &WithdrawalDelayerEmergencyModeEnabledIterator{contract: _WithdrawalDelayer.contract, event: "EmergencyModeEnabled", logs: logs, sub: sub}, nil
 }
@@ -922,7 +923,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchEmergencyModeEnabled(o
 
 	logs, sub, err := _WithdrawalDelayer.contract.WatchLogs(opts, "EmergencyModeEnabled")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -932,19 +933,19 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchEmergencyModeEnabled(o
 				// New log arrived, parse the event and forward to the user
 				event := new(WithdrawalDelayerEmergencyModeEnabled)
 				if err := _WithdrawalDelayer.contract.UnpackLog(event, "EmergencyModeEnabled", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -958,7 +959,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchEmergencyModeEnabled(o
 func (_WithdrawalDelayer *WithdrawalDelayerFilterer) ParseEmergencyModeEnabled(log types.Log) (*WithdrawalDelayerEmergencyModeEnabled, error) {
 	event := new(WithdrawalDelayerEmergencyModeEnabled)
 	if err := _WithdrawalDelayer.contract.UnpackLog(event, "EmergencyModeEnabled", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1059,7 +1060,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) FilterEscapeHatchWithdrawal
 
 	logs, sub, err := _WithdrawalDelayer.contract.FilterLogs(opts, "EscapeHatchWithdrawal", whoRule, toRule, tokenRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &WithdrawalDelayerEscapeHatchWithdrawalIterator{contract: _WithdrawalDelayer.contract, event: "EscapeHatchWithdrawal", logs: logs, sub: sub}, nil
 }
@@ -1084,7 +1085,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchEscapeHatchWithdrawal(
 
 	logs, sub, err := _WithdrawalDelayer.contract.WatchLogs(opts, "EscapeHatchWithdrawal", whoRule, toRule, tokenRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1094,19 +1095,19 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchEscapeHatchWithdrawal(
 				// New log arrived, parse the event and forward to the user
 				event := new(WithdrawalDelayerEscapeHatchWithdrawal)
 				if err := _WithdrawalDelayer.contract.UnpackLog(event, "EscapeHatchWithdrawal", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1120,7 +1121,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchEscapeHatchWithdrawal(
 func (_WithdrawalDelayer *WithdrawalDelayerFilterer) ParseEscapeHatchWithdrawal(log types.Log) (*WithdrawalDelayerEscapeHatchWithdrawal, error) {
 	event := new(WithdrawalDelayerEscapeHatchWithdrawal)
 	if err := _WithdrawalDelayer.contract.UnpackLog(event, "EscapeHatchWithdrawal", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1205,7 +1206,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) FilterNewHermezGovernanceDA
 
 	logs, sub, err := _WithdrawalDelayer.contract.FilterLogs(opts, "NewHermezGovernanceDAOAddress")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &WithdrawalDelayerNewHermezGovernanceDAOAddressIterator{contract: _WithdrawalDelayer.contract, event: "NewHermezGovernanceDAOAddress", logs: logs, sub: sub}, nil
 }
@@ -1217,7 +1218,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchNewHermezGovernanceDAO
 
 	logs, sub, err := _WithdrawalDelayer.contract.WatchLogs(opts, "NewHermezGovernanceDAOAddress")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1227,19 +1228,19 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchNewHermezGovernanceDAO
 				// New log arrived, parse the event and forward to the user
 				event := new(WithdrawalDelayerNewHermezGovernanceDAOAddress)
 				if err := _WithdrawalDelayer.contract.UnpackLog(event, "NewHermezGovernanceDAOAddress", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1253,7 +1254,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchNewHermezGovernanceDAO
 func (_WithdrawalDelayer *WithdrawalDelayerFilterer) ParseNewHermezGovernanceDAOAddress(log types.Log) (*WithdrawalDelayerNewHermezGovernanceDAOAddress, error) {
 	event := new(WithdrawalDelayerNewHermezGovernanceDAOAddress)
 	if err := _WithdrawalDelayer.contract.UnpackLog(event, "NewHermezGovernanceDAOAddress", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1338,7 +1339,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) FilterNewHermezKeeperAddres
 
 	logs, sub, err := _WithdrawalDelayer.contract.FilterLogs(opts, "NewHermezKeeperAddress")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &WithdrawalDelayerNewHermezKeeperAddressIterator{contract: _WithdrawalDelayer.contract, event: "NewHermezKeeperAddress", logs: logs, sub: sub}, nil
 }
@@ -1350,7 +1351,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchNewHermezKeeperAddress
 
 	logs, sub, err := _WithdrawalDelayer.contract.WatchLogs(opts, "NewHermezKeeperAddress")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1360,19 +1361,19 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchNewHermezKeeperAddress
 				// New log arrived, parse the event and forward to the user
 				event := new(WithdrawalDelayerNewHermezKeeperAddress)
 				if err := _WithdrawalDelayer.contract.UnpackLog(event, "NewHermezKeeperAddress", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1386,7 +1387,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchNewHermezKeeperAddress
 func (_WithdrawalDelayer *WithdrawalDelayerFilterer) ParseNewHermezKeeperAddress(log types.Log) (*WithdrawalDelayerNewHermezKeeperAddress, error) {
 	event := new(WithdrawalDelayerNewHermezKeeperAddress)
 	if err := _WithdrawalDelayer.contract.UnpackLog(event, "NewHermezKeeperAddress", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1471,7 +1472,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) FilterNewWhiteHackGroupAddr
 
 	logs, sub, err := _WithdrawalDelayer.contract.FilterLogs(opts, "NewWhiteHackGroupAddress")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &WithdrawalDelayerNewWhiteHackGroupAddressIterator{contract: _WithdrawalDelayer.contract, event: "NewWhiteHackGroupAddress", logs: logs, sub: sub}, nil
 }
@@ -1483,7 +1484,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchNewWhiteHackGroupAddre
 
 	logs, sub, err := _WithdrawalDelayer.contract.WatchLogs(opts, "NewWhiteHackGroupAddress")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1493,19 +1494,19 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchNewWhiteHackGroupAddre
 				// New log arrived, parse the event and forward to the user
 				event := new(WithdrawalDelayerNewWhiteHackGroupAddress)
 				if err := _WithdrawalDelayer.contract.UnpackLog(event, "NewWhiteHackGroupAddress", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1519,7 +1520,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchNewWhiteHackGroupAddre
 func (_WithdrawalDelayer *WithdrawalDelayerFilterer) ParseNewWhiteHackGroupAddress(log types.Log) (*WithdrawalDelayerNewWhiteHackGroupAddress, error) {
 	event := new(WithdrawalDelayerNewWhiteHackGroupAddress)
 	if err := _WithdrawalDelayer.contract.UnpackLog(event, "NewWhiteHackGroupAddress", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1604,7 +1605,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) FilterNewWithdrawalDelay(op
 
 	logs, sub, err := _WithdrawalDelayer.contract.FilterLogs(opts, "NewWithdrawalDelay")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &WithdrawalDelayerNewWithdrawalDelayIterator{contract: _WithdrawalDelayer.contract, event: "NewWithdrawalDelay", logs: logs, sub: sub}, nil
 }
@@ -1616,7 +1617,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchNewWithdrawalDelay(opt
 
 	logs, sub, err := _WithdrawalDelayer.contract.WatchLogs(opts, "NewWithdrawalDelay")
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1626,19 +1627,19 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchNewWithdrawalDelay(opt
 				// New log arrived, parse the event and forward to the user
 				event := new(WithdrawalDelayerNewWithdrawalDelay)
 				if err := _WithdrawalDelayer.contract.UnpackLog(event, "NewWithdrawalDelay", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1652,7 +1653,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchNewWithdrawalDelay(opt
 func (_WithdrawalDelayer *WithdrawalDelayerFilterer) ParseNewWithdrawalDelay(log types.Log) (*WithdrawalDelayerNewWithdrawalDelay, error) {
 	event := new(WithdrawalDelayerNewWithdrawalDelay)
 	if err := _WithdrawalDelayer.contract.UnpackLog(event, "NewWithdrawalDelay", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }
@@ -1748,7 +1749,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) FilterWithdraw(opts *bind.F
 
 	logs, sub, err := _WithdrawalDelayer.contract.FilterLogs(opts, "Withdraw", tokenRule, ownerRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &WithdrawalDelayerWithdrawIterator{contract: _WithdrawalDelayer.contract, event: "Withdraw", logs: logs, sub: sub}, nil
 }
@@ -1769,7 +1770,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchWithdraw(opts *bind.Wa
 
 	logs, sub, err := _WithdrawalDelayer.contract.WatchLogs(opts, "Withdraw", tokenRule, ownerRule)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event.NewSubscription(func(quit <-chan struct{}) error {
 		defer sub.Unsubscribe()
@@ -1779,19 +1780,19 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchWithdraw(opts *bind.Wa
 				// New log arrived, parse the event and forward to the user
 				event := new(WithdrawalDelayerWithdraw)
 				if err := _WithdrawalDelayer.contract.UnpackLog(event, "Withdraw", log); err != nil {
-					return err
+					return tracerr.Wrap(err)
 				}
 				event.Raw = log
 
 				select {
 				case sink <- event:
 				case err := <-sub.Err():
-					return err
+					return tracerr.Wrap(err)
 				case <-quit:
 					return nil
 				}
 			case err := <-sub.Err():
-				return err
+				return tracerr.Wrap(err)
 			case <-quit:
 				return nil
 			}
@@ -1805,7 +1806,7 @@ func (_WithdrawalDelayer *WithdrawalDelayerFilterer) WatchWithdraw(opts *bind.Wa
 func (_WithdrawalDelayer *WithdrawalDelayerFilterer) ParseWithdraw(log types.Log) (*WithdrawalDelayerWithdraw, error) {
 	event := new(WithdrawalDelayerWithdraw)
 	if err := _WithdrawalDelayer.contract.UnpackLog(event, "Withdraw", log); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return event, nil
 }

eth/ethereum.go

@@ -15,6 +15,7 @@ import (
 	"github.com/hermeznetwork/hermez-node/common"
 	HEZ "github.com/hermeznetwork/hermez-node/eth/contracts/tokenHEZ"
 	"github.com/hermeznetwork/hermez-node/log"
+	"github.com/hermeznetwork/tracerr"
 )
 
 // ERC20Consts are the constants defined in a particular ERC20 Token instance
@@ -105,7 +106,7 @@ func (c *EthereumClient) Account() *accounts.Account {
 // EthAddress returns the ethereum address of the account loaded into the EthereumClient
 func (c *EthereumClient) EthAddress() (*ethCommon.Address, error) {
 	if c.account == nil {
-		return nil, ErrAccountNil
+		return nil, tracerr.Wrap(ErrAccountNil)
 	}
 	return &c.account.Address, nil
 }
@@ -116,12 +117,12 @@ func (c *EthereumClient) EthAddress() (*ethCommon.Address, error) {
 func (c *EthereumClient) CallAuth(gasLimit uint64,
 	fn func(*ethclient.Client, *bind.TransactOpts) (*types.Transaction, error)) (*types.Transaction, error) {
 	if c.account == nil {
-		return nil, ErrAccountNil
+		return nil, tracerr.Wrap(ErrAccountNil)
 	}
 
 	gasPrice, err := c.client.SuggestGasPrice(context.Background())
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	inc := new(big.Int).Set(gasPrice)
 	inc.Div(inc, new(big.Int).SetUint64(c.config.GasPriceDiv))
@@ -130,7 +131,7 @@ func (c *EthereumClient) CallAuth(gasLimit uint64,
 
 	auth, err := bind.NewKeyStoreTransactor(c.ks, *c.account)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	auth.Value = big.NewInt(0) // in wei
 	if gasLimit == 0 {
@@ -144,7 +145,7 @@ func (c *EthereumClient) CallAuth(gasLimit uint64,
 	if tx != nil {
 		log.Debugw("Transaction", "tx", tx.Hash().Hex(), "nonce", tx.Nonce())
 	}
-	return tx, err
+	return tx, tracerr.Wrap(err)
 }
 
 // ContractData contains the contract data
@@ -167,20 +168,20 @@ func (c *EthereumClient) Deploy(name string,
 		func(client *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
 			addr, tx, _, err := fn(client, auth)
 			if err != nil {
-				return nil, err
+				return nil, tracerr.Wrap(err)
 			}
 			contractData.Address = addr
 			return tx, nil
 		},
 	)
 	if err != nil {
-		return contractData, fmt.Errorf(errStrDeploy, name, err)
+		return contractData, tracerr.Wrap(fmt.Errorf(errStrDeploy, name, err))
 	}
 	log.Infow("Waiting receipt", "tx", tx.Hash().Hex(), "contract", name)
 	contractData.Tx = tx
 	receipt, err := c.WaitReceipt(tx)
 	if err != nil {
-		return contractData, fmt.Errorf(errStrWaitReceipt, name, err)
+		return contractData, tracerr.Wrap(fmt.Errorf(errStrWaitReceipt, name, err))
 	}
 	contractData.Receipt = receipt
 	return contractData, nil
@@ -229,16 +230,16 @@ func (c *EthereumClient) waitReceipt(ctx context.Context, tx *types.Transaction,
 
 	if receipt != nil && receipt.Status == types.ReceiptStatusFailed {
 		log.Errorw("Failed transaction", "tx", txHash.Hex())
-		return receipt, ErrReceiptStatusFailed
+		return receipt, tracerr.Wrap(ErrReceiptStatusFailed)
 	}
 
 	if receipt == nil {
 		log.Debugw("Pendingtransaction / Wait receipt timeout", "tx", txHash.Hex(), "lasterr", err)
-		return receipt, ErrReceiptNotReceived
+		return receipt, tracerr.Wrap(ErrReceiptNotReceived)
 	}
 	log.Debugw("Successful transaction", "tx", txHash.Hex())
 
-	return receipt, err
+	return receipt, tracerr.Wrap(err)
 }
 
 // EthLastBlock returns the last block number in the blockchain
@@ -247,7 +248,7 @@ func (c *EthereumClient) EthLastBlock() (int64, error) {
 	defer cancel()
 	header, err := c.client.HeaderByNumber(ctx, nil)
 	if err != nil {
-		return 0, err
+		return 0, tracerr.Wrap(err)
 	}
 	return header.Number.Int64(), nil
 }
@@ -266,7 +267,7 @@ func (c *EthereumClient) EthBlockByNumber(ctx context.Context, number int64) (*c
 	}
 	block, err := c.client.BlockByNumber(ctx, blockNum)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	b := &common.Block{
 		Num:        block.Number().Int64(),
@@ -283,21 +284,21 @@ func (c *EthereumClient) EthERC20Consts(tokenAddress ethCommon.Address) (*ERC20C
 	// ERC20, which allows us to access the standard ERC20 constants.
 	instance, err := HEZ.NewHEZ(tokenAddress, c.client)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	name, err := instance.Name(nil)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 
 	symbol, err := instance.Symbol(nil)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 
 	decimals, err := instance.Decimals(nil)
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &ERC20Consts{
 		Name:     name,

eth/rollup.go

@@ -17,6 +17,7 @@ import (
 	Hermez "github.com/hermeznetwork/hermez-node/eth/contracts/hermez"
 	HEZ "github.com/hermeznetwork/hermez-node/eth/contracts/tokenHEZ"
 	"github.com/hermeznetwork/hermez-node/log"
+	"github.com/hermeznetwork/tracerr"
 	"github.com/iden3/go-iden3-crypto/babyjub"
 )
 
@@ -202,19 +203,19 @@ type RollupClient struct {
 func NewRollupClient(client *EthereumClient, address ethCommon.Address, tokenHEZCfg TokenConfig) (*RollupClient, error) {
 	contractAbi, err := abi.JSON(strings.NewReader(string(Hermez.HermezABI)))
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	hermez, err := Hermez.NewHermez(address, client.Client())
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	tokenHEZ, err := HEZ.NewHEZ(tokenHEZCfg.Address, client.Client())
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	chainID, err := client.client.ChainID(context.Background())
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &RollupClient{
 		client:      client,
@@ -234,7 +235,7 @@ func (c *RollupClient) RollupForgeBatch(args *RollupForgeBatchArgs) (tx *types.T
 		func(ec *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
 			rollupConst, err := c.RollupConstants()
 			if err != nil {
-				return nil, err
+				return nil, tracerr.Wrap(err)
 			}
 			nLevels := rollupConst.Verifiers[args.VerifierIdx].NLevels
 			lenBytes := nLevels / 8 //nolint:gomnd
@@ -244,7 +245,7 @@ func (c *RollupClient) RollupForgeBatch(args *RollupForgeBatchArgs) (tx *types.T
 				l1 := args.L1CoordinatorTxs[i]
 				bytesl1, err := l1.BytesCoordinatorTx(args.L1CoordinatorTxsAuths[i])
 				if err != nil {
-					return nil, err
+					return nil, tracerr.Wrap(err)
 				}
 				l1CoordinatorBytes = append(l1CoordinatorBytes, bytesl1[:]...)
 			}
@@ -253,14 +254,14 @@ func (c *RollupClient) RollupForgeBatch(args *RollupForgeBatchArgs) (tx *types.T
 				l2 := args.L2TxsData[i]
 				bytesl2, err := l2.BytesDataAvailability(uint32(nLevels))
 				if err != nil {
-					return nil, err
+					return nil, tracerr.Wrap(err)
 				}
 				l2DataBytes = append(l2DataBytes, bytesl2[:]...)
 			}
 			var feeIdxCoordinator []byte
 			if len(args.FeeIdxCoordinator) > common.RollupConstMaxFeeIdxCoordinator {
-				return nil, fmt.Errorf("len(args.FeeIdxCoordinator) > %v",
-					common.RollupConstMaxFeeIdxCoordinator)
+				return nil, tracerr.Wrap(fmt.Errorf("len(args.FeeIdxCoordinator) > %v",
+					common.RollupConstMaxFeeIdxCoordinator))
 			}
 			for i := 0; i < common.RollupConstMaxFeeIdxCoordinator; i++ {
 				feeIdx := common.Idx(0)
@@ -269,14 +270,14 @@ func (c *RollupClient) RollupForgeBatch(args *RollupForgeBatchArgs) (tx *types.T
 				}
 				bytesFeeIdx, err := feeIdx.Bytes()
 				if err != nil {
-					return nil, err
+					return nil, tracerr.Wrap(err)
 				}
 				feeIdxCoordinator = append(feeIdxCoordinator, bytesFeeIdx[len(bytesFeeIdx)-int(lenBytes):]...)
 			}
 			return c.hermez.ForgeBatch(auth, newLastIdx, args.NewStRoot, args.NewExitRoot, l1CoordinatorBytes, l2DataBytes, feeIdxCoordinator, args.VerifierIdx, args.L1Batch, args.ProofA, args.ProofB, args.ProofC)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed forge batch: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed forge batch: %w", err))
 	}
 	return tx, nil
 }
@@ -292,7 +293,7 @@ func (c *RollupClient) RollupAddToken(tokenAddress ethCommon.Address, feeAddToke
 			spender := c.address
 			nonce, err := c.tokenHEZ.Nonces(nil, owner)
 			if err != nil {
-				return nil, err
+				return nil, tracerr.Wrap(err)
 			}
 			tokenName := c.tokenHEZCfg.Name
 			tokenAddr := c.tokenHEZCfg.Address
@@ -303,7 +304,7 @@ func (c *RollupClient) RollupAddToken(tokenAddress ethCommon.Address, feeAddToke
 			return c.hermez.AddToken(auth, tokenAddress, permit)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed add Token %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed add Token %w", err))
 	}
 	return tx, nil
 }
@@ -321,7 +322,7 @@ func (c *RollupClient) RollupWithdrawMerkleProof(fromBJJ *babyjub.PublicKey, tok
 			return c.hermez.WithdrawMerkleProof(auth, tokenID, amount, babyPubKey, numExitRootB, siblings, idxBig, instantWithdraw)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed update WithdrawMerkleProof: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed update WithdrawMerkleProof: %w", err))
 	}
 	return tx, nil
 }
@@ -329,7 +330,7 @@ func (c *RollupClient) RollupWithdrawMerkleProof(fromBJJ *babyjub.PublicKey, tok
 // RollupWithdrawCircuit is the interface to call the smart contract function
 func (c *RollupClient) RollupWithdrawCircuit(proofA, proofC [2]*big.Int, proofB [2][2]*big.Int, tokenID uint32, numExitRoot, idx int64, amount *big.Int, instantWithdraw bool) (*types.Transaction, error) {
 	log.Error("TODO")
-	return nil, errTODO
+	return nil, tracerr.Wrap(errTODO)
 }
 
 // RollupL1UserTxERC20ETH is the interface to call the smart contract function
@@ -344,11 +345,11 @@ func (c *RollupClient) RollupL1UserTxERC20ETH(fromBJJ *babyjub.PublicKey, fromId
 			toIdxBig := big.NewInt(toIdx)
 			loadAmountF, err := common.NewFloat16(loadAmount)
 			if err != nil {
-				return nil, err
+				return nil, tracerr.Wrap(err)
 			}
 			amountF, err := common.NewFloat16(amount)
 			if err != nil {
-				return nil, err
+				return nil, tracerr.Wrap(err)
 			}
 			if tokenID == 0 {
 				auth.Value = loadAmount
@@ -358,7 +359,7 @@ func (c *RollupClient) RollupL1UserTxERC20ETH(fromBJJ *babyjub.PublicKey, fromId
 				uint16(amountF), tokenID, toIdxBig, permit)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed add L1 Tx ERC20/ETH: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed add L1 Tx ERC20/ETH: %w", err))
 	}
 	return tx, nil
 }
@@ -375,11 +376,11 @@ func (c *RollupClient) RollupL1UserTxERC20Permit(fromBJJ *babyjub.PublicKey, fro
 			toIdxBig := big.NewInt(toIdx)
 			loadAmountF, err := common.NewFloat16(loadAmount)
 			if err != nil {
-				return nil, err
+				return nil, tracerr.Wrap(err)
 			}
 			amountF, err := common.NewFloat16(amount)
 			if err != nil {
-				return nil, err
+				return nil, tracerr.Wrap(err)
 			}
 			if tokenID == 0 {
 				auth.Value = loadAmount
@@ -388,7 +389,7 @@ func (c *RollupClient) RollupL1UserTxERC20Permit(fromBJJ *babyjub.PublicKey, fro
 			spender := c.address
 			nonce, err := c.tokenHEZ.Nonces(nil, owner)
 			if err != nil {
-				return nil, err
+				return nil, tracerr.Wrap(err)
 			}
 			tokenName := c.tokenHEZCfg.Name
 			tokenAddr := c.tokenHEZCfg.Address
@@ -399,7 +400,7 @@ func (c *RollupClient) RollupL1UserTxERC20Permit(fromBJJ *babyjub.PublicKey, fro
 				uint16(amountF), tokenID, toIdxBig, permit)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed add L1 Tx ERC20Permit: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed add L1 Tx ERC20Permit: %w", err))
 	}
 	return tx, nil
 }
@@ -408,9 +409,9 @@ func (c *RollupClient) RollupL1UserTxERC20Permit(fromBJJ *babyjub.PublicKey, fro
 func (c *RollupClient) RollupRegisterTokensCount() (registerTokensCount *big.Int, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		registerTokensCount, err = c.hermez.RegisterTokensCount(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return registerTokensCount, nil
 }
@@ -420,9 +421,9 @@ func (c *RollupClient) RollupLastForgedBatch() (lastForgedBatch int64, err error
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		_lastForgedBatch, err := c.hermez.LastForgedBatch(nil)
 		lastForgedBatch = int64(_lastForgedBatch)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return 0, err
+		return 0, tracerr.Wrap(err)
 	}
 	return lastForgedBatch, nil
 }
@@ -435,7 +436,7 @@ func (c *RollupClient) RollupUpdateForgeL1L2BatchTimeout(newForgeL1L2BatchTimeou
 			return c.hermez.UpdateForgeL1L2BatchTimeout(auth, uint8(newForgeL1L2BatchTimeout))
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed update ForgeL1L2BatchTimeout: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed update ForgeL1L2BatchTimeout: %w", err))
 	}
 	return tx, nil
 }
@@ -448,7 +449,7 @@ func (c *RollupClient) RollupUpdateFeeAddToken(newFeeAddToken *big.Int) (tx *typ
 			return c.hermez.UpdateFeeAddToken(auth, newFeeAddToken)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed update FeeAddToken: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed update FeeAddToken: %w", err))
 	}
 	return tx, nil
 }
@@ -459,18 +460,18 @@ func (c *RollupClient) RollupConstants() (rollupConstants *common.RollupConstant
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		absoluteMaxL1L2BatchTimeout, err := c.hermez.ABSOLUTEMAXL1L2BATCHTIMEOUT(nil)
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		rollupConstants.AbsoluteMaxL1L2BatchTimeout = int64(absoluteMaxL1L2BatchTimeout)
 		rollupConstants.TokenHEZ, err = c.hermez.TokenHEZ(nil)
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		for i := int64(0); i < int64(common.LenVerifiers); i++ {
 			var newRollupVerifier common.RollupVerifierStruct
 			rollupVerifier, err := c.hermez.RollupVerifiers(nil, big.NewInt(i))
 			if err != nil {
-				return err
+				return tracerr.Wrap(err)
 			}
 			newRollupVerifier.MaxTx = rollupVerifier.MaxTx.Int64()
 			newRollupVerifier.NLevels = rollupVerifier.NLevels.Int64()
@@ -478,20 +479,20 @@ func (c *RollupClient) RollupConstants() (rollupConstants *common.RollupConstant
 		}
 		rollupConstants.HermezAuctionContract, err = c.hermez.HermezAuctionContract(nil)
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		rollupConstants.HermezGovernanceDAOAddress, err = c.hermez.HermezGovernanceDAOAddress(nil)
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		rollupConstants.SafetyAddress, err = c.hermez.SafetyAddress(nil)
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		rollupConstants.WithdrawDelayerContract, err = c.hermez.WithdrawDelayerContract(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return rollupConstants, nil
 }
@@ -521,7 +522,7 @@ func (c *RollupClient) RollupEventsByBlock(blockNum int64) (*RollupEvents, *ethC
 	}
 	logs, err := c.client.client.FilterLogs(context.Background(), query)
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, tracerr.Wrap(err)
 	}
 	if len(logs) > 0 {
 		blockHash = &logs[0].BlockHash
@@ -529,7 +530,7 @@ func (c *RollupClient) RollupEventsByBlock(blockNum int64) (*RollupEvents, *ethC
 	for _, vLog := range logs {
 		if vLog.BlockHash != *blockHash {
 			log.Errorw("Block hash mismatch", "expected", blockHash.String(), "got", vLog.BlockHash.String())
-			return nil, nil, ErrBlockHashMismatchEvent
+			return nil, nil, tracerr.Wrap(ErrBlockHashMismatchEvent)
 		}
 		switch vLog.Topics[0] {
 		case logHermezL1UserTxEvent:
@@ -537,11 +538,11 @@ func (c *RollupClient) RollupEventsByBlock(blockNum int64) (*RollupEvents, *ethC
 			var L1UserTx RollupEventL1UserTx
 			err := c.contractAbi.Unpack(&L1UserTxAux, "L1UserTxEvent", vLog.Data)
 			if err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			L1Tx, err := common.L1UserTxFromBytes(L1UserTxAux.L1UserTx)
 			if err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			toForgeL1TxsNum := new(big.Int).SetBytes(vLog.Topics[1][:]).Int64()
 			L1Tx.ToForgeL1TxsNum = &toForgeL1TxsNum
@@ -553,7 +554,7 @@ func (c *RollupClient) RollupEventsByBlock(blockNum int64) (*RollupEvents, *ethC
 			var addToken RollupEventAddToken
 			err := c.contractAbi.Unpack(&addToken, "AddToken", vLog.Data)
 			if err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			addToken.TokenAddress = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
 			rollupEvents.AddToken = append(rollupEvents.AddToken, addToken)
@@ -569,7 +570,7 @@ func (c *RollupClient) RollupEventsByBlock(blockNum int64) (*RollupEvents, *ethC
 			}
 			err := c.contractAbi.Unpack(&updateForgeL1L2BatchTimeout, "UpdateForgeL1L2BatchTimeout", vLog.Data)
 			if err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			rollupEvents.UpdateForgeL1L2BatchTimeout = append(rollupEvents.UpdateForgeL1L2BatchTimeout,
 				RollupEventUpdateForgeL1L2BatchTimeout{
@@ -579,7 +580,7 @@ func (c *RollupClient) RollupEventsByBlock(blockNum int64) (*RollupEvents, *ethC
 			var updateFeeAddToken RollupEventUpdateFeeAddToken
 			err := c.contractAbi.Unpack(&updateFeeAddToken, "UpdateFeeAddToken", vLog.Data)
 			if err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			rollupEvents.UpdateFeeAddToken = append(rollupEvents.UpdateFeeAddToken, updateFeeAddToken)
 		case logHermezWithdrawEvent:
@@ -602,25 +603,25 @@ func (c *RollupClient) RollupEventsByBlock(blockNum int64) (*RollupEvents, *ethC
 func (c *RollupClient) RollupForgeBatchArgs(ethTxHash ethCommon.Hash) (*RollupForgeBatchArgs, *ethCommon.Address, error) {
 	tx, _, err := c.client.client.TransactionByHash(context.Background(), ethTxHash)
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, tracerr.Wrap(err)
 	}
 	txData := tx.Data()
 
 	method, err := c.contractAbi.MethodById(txData[:4])
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, tracerr.Wrap(err)
 	}
 	receipt, err := c.client.client.TransactionReceipt(context.Background(), ethTxHash)
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, tracerr.Wrap(err)
 	}
 	sender, err := c.client.client.TransactionSender(context.Background(), tx, receipt.Logs[0].BlockHash, receipt.Logs[0].Index)
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, tracerr.Wrap(err)
 	}
 	var aux RollupForgeBatchArgsAux
 	if err := method.Inputs.Unpack(&aux, txData[4:]); err != nil {
-		return nil, nil, err
+		return nil, nil, tracerr.Wrap(err)
 	}
 	rollupForgeBatchArgs := RollupForgeBatchArgs{
 		L1Batch:               aux.L1Batch,
@@ -648,14 +649,14 @@ func (c *RollupClient) RollupForgeBatchArgs(ethTxHash ethCommon.Hash) (*RollupFo
 		signature = append(signature, v)
 		l1Tx, err := common.L1CoordinatorTxFromBytes(bytesL1Coordinator, c.chainID, c.address)
 		if err != nil {
-			return nil, nil, err
+			return nil, nil, tracerr.Wrap(err)
 		}
 		rollupForgeBatchArgs.L1CoordinatorTxs = append(rollupForgeBatchArgs.L1CoordinatorTxs, *l1Tx)
 		rollupForgeBatchArgs.L1CoordinatorTxsAuths = append(rollupForgeBatchArgs.L1CoordinatorTxsAuths, signature)
 	}
 	rollupConsts, err := c.RollupConstants()
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, tracerr.Wrap(err)
 	}
 	nLevels := rollupConsts.Verifiers[rollupForgeBatchArgs.VerifierIdx].NLevels
 	lenL2TxsBytes := int((nLevels/8)*2 + 2 + 1)
@@ -663,7 +664,7 @@ func (c *RollupClient) RollupForgeBatchArgs(ethTxHash ethCommon.Hash) (*RollupFo
 	for i := 0; i < numTxsL2; i++ {
 		l2Tx, err := common.L2TxFromBytes(aux.L2TxsData[i*lenL2TxsBytes:(i+1)*lenL2TxsBytes], int(nLevels))
 		if err != nil {
-			return nil, nil, err
+			return nil, nil, tracerr.Wrap(err)
 		}
 		rollupForgeBatchArgs.L2TxsData = append(rollupForgeBatchArgs.L2TxsData, *l2Tx)
 	}
@@ -679,7 +680,7 @@ func (c *RollupClient) RollupForgeBatchArgs(ethTxHash ethCommon.Hash) (*RollupFo
 		}
 		feeIdxCoordinator, err := common.IdxFromBytes(paddedFeeIdx[:])
 		if err != nil {
-			return nil, nil, err
+			return nil, nil, tracerr.Wrap(err)
 		}
 		if feeIdxCoordinator != common.Idx(0) {
 			rollupForgeBatchArgs.FeeIdxCoordinator = append(rollupForgeBatchArgs.FeeIdxCoordinator, feeIdxCoordinator)

eth/wdelayer.go

@@ -16,6 +16,7 @@ import (
 	"github.com/hermeznetwork/hermez-node/common"
 	WithdrawalDelayer "github.com/hermeznetwork/hermez-node/eth/contracts/withdrawdelayer"
 	"github.com/hermeznetwork/hermez-node/log"
+	"github.com/hermeznetwork/tracerr"
 )
 
 // DepositState is the state of Deposit
@@ -140,11 +141,11 @@ type WDelayerClient struct {
 func NewWDelayerClient(client *EthereumClient, address ethCommon.Address) (*WDelayerClient, error) {
 	contractAbi, err := abi.JSON(strings.NewReader(string(WithdrawalDelayer.WithdrawalDelayerABI)))
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	wdelayer, err := WithdrawalDelayer.NewWithdrawalDelayer(address, client.Client())
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &WDelayerClient{
 		client:      client,
@@ -159,9 +160,9 @@ func (c *WDelayerClient) WDelayerGetHermezGovernanceDAOAddress() (hermezGovernan
 	var _hermezGovernanceDAOAddress ethCommon.Address
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		_hermezGovernanceDAOAddress, err = c.wdelayer.GetHermezGovernanceDAOAddress(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &_hermezGovernanceDAOAddress, nil
 }
@@ -174,7 +175,7 @@ func (c *WDelayerClient) WDelayerSetHermezGovernanceDAOAddress(newAddress ethCom
 			return c.wdelayer.SetHermezGovernanceDAOAddress(auth, newAddress)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed setting hermezGovernanceDAOAddress: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed setting hermezGovernanceDAOAddress: %w", err))
 	}
 	return tx, nil
 }
@@ -184,9 +185,9 @@ func (c *WDelayerClient) WDelayerGetHermezKeeperAddress() (hermezKeeperAddress *
 	var _hermezKeeperAddress ethCommon.Address
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		_hermezKeeperAddress, err = c.wdelayer.GetHermezKeeperAddress(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &_hermezKeeperAddress, nil
 }
@@ -199,7 +200,7 @@ func (c *WDelayerClient) WDelayerSetHermezKeeperAddress(newAddress ethCommon.Add
 			return c.wdelayer.SetHermezKeeperAddress(auth, newAddress)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed setting hermezKeeperAddress: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed setting hermezKeeperAddress: %w", err))
 	}
 	return tx, nil
 }
@@ -209,9 +210,9 @@ func (c *WDelayerClient) WDelayerGetWhiteHackGroupAddress() (whiteHackGroupAddre
 	var _whiteHackGroupAddress ethCommon.Address
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		_whiteHackGroupAddress, err = c.wdelayer.GetWhiteHackGroupAddress(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return &_whiteHackGroupAddress, nil
 }
@@ -224,7 +225,7 @@ func (c *WDelayerClient) WDelayerSetWhiteHackGroupAddress(newAddress ethCommon.A
 			return c.wdelayer.SetWhiteHackGroupAddress(auth, newAddress)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed setting whiteHackGroupAddress: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed setting whiteHackGroupAddress: %w", err))
 	}
 	return tx, nil
 }
@@ -233,9 +234,9 @@ func (c *WDelayerClient) WDelayerSetWhiteHackGroupAddress(newAddress ethCommon.A
 func (c *WDelayerClient) WDelayerIsEmergencyMode() (ermergencyMode bool, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		ermergencyMode, err = c.wdelayer.IsEmergencyMode(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return false, err
+		return false, tracerr.Wrap(err)
 	}
 	return ermergencyMode, nil
 }
@@ -244,9 +245,9 @@ func (c *WDelayerClient) WDelayerIsEmergencyMode() (ermergencyMode bool, err err
 func (c *WDelayerClient) WDelayerGetWithdrawalDelay() (withdrawalDelay *big.Int, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		withdrawalDelay, err = c.wdelayer.GetWithdrawalDelay(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return withdrawalDelay, nil
 }
@@ -255,9 +256,9 @@ func (c *WDelayerClient) WDelayerGetWithdrawalDelay() (withdrawalDelay *big.Int,
 func (c *WDelayerClient) WDelayerGetEmergencyModeStartingTime() (emergencyModeStartingTime *big.Int, err error) {
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		emergencyModeStartingTime, err = c.wdelayer.GetEmergencyModeStartingTime(nil)
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	return emergencyModeStartingTime, nil
 }
@@ -270,7 +271,7 @@ func (c *WDelayerClient) WDelayerEnableEmergencyMode() (tx *types.Transaction, e
 			return c.wdelayer.EnableEmergencyMode(auth)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed setting enable emergency mode: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed setting enable emergency mode: %w", err))
 	}
 	return tx, nil
 }
@@ -283,7 +284,7 @@ func (c *WDelayerClient) WDelayerChangeWithdrawalDelay(newWithdrawalDelay uint64
 			return c.wdelayer.ChangeWithdrawalDelay(auth, newWithdrawalDelay)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed setting withdrawal delay: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed setting withdrawal delay: %w", err))
 	}
 	return tx, nil
 }
@@ -294,9 +295,9 @@ func (c *WDelayerClient) WDelayerDepositInfo(owner, token ethCommon.Address) (de
 		amount, depositTimestamp, err := c.wdelayer.DepositInfo(nil, owner, token)
 		depositInfo.Amount = amount
 		depositInfo.DepositTimestamp = depositTimestamp
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return depositInfo, err
+		return depositInfo, tracerr.Wrap(err)
 	}
 	return depositInfo, nil
 }
@@ -309,7 +310,7 @@ func (c *WDelayerClient) WDelayerDeposit(owner, token ethCommon.Address, amount
 			return c.wdelayer.Deposit(auth, owner, token, amount)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed deposit: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed deposit: %w", err))
 	}
 	return tx, nil
 }
@@ -322,7 +323,7 @@ func (c *WDelayerClient) WDelayerWithdrawal(owner, token ethCommon.Address) (tx
 			return c.wdelayer.Withdrawal(auth, owner, token)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed withdrawal: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed withdrawal: %w", err))
 	}
 	return tx, nil
 }
@@ -335,7 +336,7 @@ func (c *WDelayerClient) WDelayerEscapeHatchWithdrawal(to, token ethCommon.Addre
 			return c.wdelayer.EscapeHatchWithdrawal(auth, to, token, amount)
 		},
 	); err != nil {
-		return nil, fmt.Errorf("Failed escapeHatchWithdrawal: %w", err)
+		return nil, tracerr.Wrap(fmt.Errorf("Failed escapeHatchWithdrawal: %w", err))
 	}
 	return tx, nil
 }
@@ -346,19 +347,19 @@ func (c *WDelayerClient) WDelayerConstants() (constants *common.WDelayerConstant
 	if err := c.client.Call(func(ec *ethclient.Client) error {
 		constants.MaxWithdrawalDelay, err = c.wdelayer.MAXWITHDRAWALDELAY(nil)
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		constants.MaxEmergencyModeTime, err = c.wdelayer.MAXEMERGENCYMODETIME(nil)
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		constants.HermezRollup, err = c.wdelayer.HermezRollupAddress(nil)
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
-		return err
+		return tracerr.Wrap(err)
 	}); err != nil {
-		return constants, err
+		return constants, tracerr.Wrap(err)
 	}
 	return constants, nil
 }
@@ -393,7 +394,7 @@ func (c *WDelayerClient) WDelayerEventsByBlock(blockNum int64) (*WDelayerEvents,
 
 	logs, err := c.client.client.FilterLogs(context.Background(), query)
 	if err != nil {
-		return nil, nil, err
+		return nil, nil, tracerr.Wrap(err)
 	}
 	if len(logs) > 0 {
 		blockHash = &logs[0].BlockHash
@@ -401,14 +402,14 @@ func (c *WDelayerClient) WDelayerEventsByBlock(blockNum int64) (*WDelayerEvents,
 	for _, vLog := range logs {
 		if vLog.BlockHash != *blockHash {
 			log.Errorw("Block hash mismatch", "expected", blockHash.String(), "got", vLog.BlockHash.String())
-			return nil, nil, ErrBlockHashMismatchEvent
+			return nil, nil, tracerr.Wrap(ErrBlockHashMismatchEvent)
 		}
 		switch vLog.Topics[0] {
 		case logWDelayerDeposit:
 			var deposit WDelayerEventDeposit
 			err := c.contractAbi.Unpack(&deposit, "Deposit", vLog.Data)
 			if err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			deposit.Owner = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
 			deposit.Token = ethCommon.BytesToAddress(vLog.Topics[2].Bytes())
@@ -419,7 +420,7 @@ func (c *WDelayerClient) WDelayerEventsByBlock(blockNum int64) (*WDelayerEvents,
 			var withdraw WDelayerEventWithdraw
 			err := c.contractAbi.Unpack(&withdraw, "Withdraw", vLog.Data)
 			if err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			withdraw.Token = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
 			withdraw.Owner = ethCommon.BytesToAddress(vLog.Topics[2].Bytes())
@@ -433,7 +434,7 @@ func (c *WDelayerClient) WDelayerEventsByBlock(blockNum int64) (*WDelayerEvents,
 			var withdrawalDelay WDelayerEventNewWithdrawalDelay
 			err := c.contractAbi.Unpack(&withdrawalDelay, "NewWithdrawalDelay", vLog.Data)
 			if err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			wdelayerEvents.NewWithdrawalDelay = append(wdelayerEvents.NewWithdrawalDelay, withdrawalDelay)
 
@@ -441,7 +442,7 @@ func (c *WDelayerClient) WDelayerEventsByBlock(blockNum int64) (*WDelayerEvents,
 			var escapeHatchWithdrawal WDelayerEventEscapeHatchWithdrawal
 			err := c.contractAbi.Unpack(&escapeHatchWithdrawal, "EscapeHatchWithdrawal", vLog.Data)
 			if err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			escapeHatchWithdrawal.Who = ethCommon.BytesToAddress(vLog.Topics[1].Bytes())
 			escapeHatchWithdrawal.To = ethCommon.BytesToAddress(vLog.Topics[2].Bytes())
@@ -452,7 +453,7 @@ func (c *WDelayerClient) WDelayerEventsByBlock(blockNum int64) (*WDelayerEvents,
 			var keeperAddress WDelayerEventNewHermezKeeperAddress
 			err := c.contractAbi.Unpack(&keeperAddress, "NewHermezKeeperAddress", vLog.Data)
 			if err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			wdelayerEvents.NewHermezKeeperAddress = append(wdelayerEvents.NewHermezKeeperAddress, keeperAddress)
 
@@ -460,7 +461,7 @@ func (c *WDelayerClient) WDelayerEventsByBlock(blockNum int64) (*WDelayerEvents,
 			var whiteHackGroupAddress WDelayerEventNewWhiteHackGroupAddress
 			err := c.contractAbi.Unpack(&whiteHackGroupAddress, "NewWhiteHackGroupAddress", vLog.Data)
 			if err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			wdelayerEvents.NewWhiteHackGroupAddress = append(wdelayerEvents.NewWhiteHackGroupAddress, whiteHackGroupAddress)
 
@@ -468,7 +469,7 @@ func (c *WDelayerClient) WDelayerEventsByBlock(blockNum int64) (*WDelayerEvents,
 			var governanceDAOAddress WDelayerEventNewHermezGovernanceDAOAddress
 			err := c.contractAbi.Unpack(&governanceDAOAddress, "NewHermezGovernanceDAOAddress", vLog.Data)
 			if err != nil {
-				return nil, nil, err
+				return nil, nil, tracerr.Wrap(err)
 			}
 			wdelayerEvents.NewHermezGovernanceDAOAddress = append(wdelayerEvents.NewHermezGovernanceDAOAddress, governanceDAOAddress)
 		}