chore: format Rust code the usual way

Remove the custom formatting rules and run `cargo fmt`.

src/errors.rs

@@ -3,30 +3,30 @@ use thiserror::Error;
 
 #[derive(Error, Debug)]
 pub enum ProofVerifyError {
-  #[error("Proof verification failed")]
-  InternalError,
-  #[error("Compressed group element failed to decompress: {0:?}")]
-  DecompressionError(Vec<u8>),
+    #[error("Proof verification failed")]
+    InternalError,
+    #[error("Compressed group element failed to decompress: {0:?}")]
+    DecompressionError(Vec<u8>),
 }
 
 impl Default for ProofVerifyError {
-  fn default() -> Self {
-    ProofVerifyError::InternalError
-  }
+    fn default() -> Self {
+        ProofVerifyError::InternalError
+    }
 }
 
 #[derive(Clone, Debug, Eq, PartialEq)]
 pub enum R1CSError {
-  /// returned if the number of constraints is not a power of 2
-  NonPowerOfTwoCons,
-  /// returned if the number of variables is not a power of 2
-  NonPowerOfTwoVars,
-  /// returned if a wrong number of inputs in an assignment are supplied
-  InvalidNumberOfInputs,
-  /// returned if a wrong number of variables in an assignment are supplied
-  InvalidNumberOfVars,
-  /// returned if a [u8;32] does not parse into a valid Scalar in the field of ristretto255
-  InvalidScalar,
-  /// returned if the supplied row or col in (row,col,val) tuple is out of range
-  InvalidIndex,
+    /// returned if the number of constraints is not a power of 2
+    NonPowerOfTwoCons,
+    /// returned if the number of variables is not a power of 2
+    NonPowerOfTwoVars,
+    /// returned if a wrong number of inputs in an assignment are supplied
+    InvalidNumberOfInputs,
+    /// returned if a wrong number of variables in an assignment are supplied
+    InvalidNumberOfVars,
+    /// returned if a [u8;32] does not parse into a valid Scalar in the field of ristretto255
+    InvalidScalar,
+    /// returned if the supplied row or col in (row,col,val) tuple is out of range
+    InvalidIndex,
 }