chore: handle deprecations in winterfell 0.8.3 release

src/utils/kv_map.rs

@@ -1,9 +1,8 @@
-use core::cell::RefCell;
-
-use super::{
-    boxed::*,
-    collections::{btree_map::*, *},
+use alloc::{
+    boxed::Box,
+    collections::{BTreeMap, BTreeSet},
 };
+use core::cell::RefCell;
 
 // KEY-VALUE MAP TRAIT
 // ================================================================================================
@@ -202,7 +201,7 @@ impl<K: Clone + Ord, V: Clone> FromIterator<(K, V)> for RecordingMap<K, V> {
 
 impl<K: Clone + Ord, V: Clone> IntoIterator for RecordingMap<K, V> {
     type Item = (K, V);
-    type IntoIter = IntoIter<K, V>;
+    type IntoIter = alloc::collections::btree_map::IntoIter<K, V>;
 
     fn into_iter(self) -> Self::IntoIter {
         self.data.into_iter()

src/utils/mod.rs

@@ -1,15 +1,9 @@
 //! Utilities used in this crate which can also be generally useful downstream.
 
+use alloc::string::String;
 use core::fmt::{self, Display, Write};
 
-#[cfg(feature = "std")]
-pub use std::{format, vec};
-
-#[cfg(not(feature = "std"))]
-pub use alloc::{format, vec};
-
 use super::Word;
-use crate::utils::string::*;
 
 mod kv_map;
 
@@ -21,8 +15,6 @@ pub use winter_utils::{
 };
 
 pub mod collections {
-    pub use winter_utils::collections::*;
-
     pub use super::kv_map::*;
 }
 
@@ -102,12 +94,11 @@ pub fn hex_to_bytes<const N: usize>(value: &str) -> Result<[u8; N], HexParseErro
     });
 
     let mut decoded = [0u8; N];
-    #[allow(clippy::needless_range_loop)]
-    for pos in 0..N {
+    for byte in decoded.iter_mut() {
         // These `unwrap` calls are okay because the length was checked above
         let high: u8 = data.next().unwrap()?;
         let low: u8 = data.next().unwrap()?;
-        decoded[pos] = (high << 4) + low;
+        *byte = (high << 4) + low;
     }
 
     Ok(decoded)