From e1a4785730a7d64d7d612ba8e3b103e46d0ee4ed Mon Sep 17 00:00:00 2001
From: jowparks <joe@iflabs.network>
Date: Tue, 12 Mar 2024 14:11:25 -0700
Subject: [PATCH] chore: rust update (#4838)

---
 ironfish-rust/src/keys/mod.rs          | 1 -
 ironfish-rust/src/serializing/mod.rs   | 2 +-
 ironfish-rust/src/test_util.rs         | 1 -
 ironfish-rust/src/transaction/tests.rs | 1 -
 ironfish-zkp/src/circuits/spend.rs     | 4 ++--
 rust-toolchain.toml                    | 2 +-
 6 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/ironfish-rust/src/keys/mod.rs b/ironfish-rust/src/keys/mod.rs
index f621686398..5797f6f1fd 100644
--- a/ironfish-rust/src/keys/mod.rs
+++ b/ironfish-rust/src/keys/mod.rs
@@ -13,7 +13,6 @@ use group::GroupEncoding;
 use ironfish_zkp::constants::{
     CRH_IVK_PERSONALIZATION, PROOF_GENERATION_KEY_GENERATOR, SPENDING_KEY_GENERATOR,
 };
-use ironfish_zkp::ProofGenerationKey;
 use jubjub::SubgroupPoint;
 use rand::prelude::*;
 
diff --git a/ironfish-rust/src/serializing/mod.rs b/ironfish-rust/src/serializing/mod.rs
index 8e8752edce..1555eaf690 100644
--- a/ironfish-rust/src/serializing/mod.rs
+++ b/ironfish-rust/src/serializing/mod.rs
@@ -72,7 +72,7 @@ pub fn hex_to_vec_bytes(hex: &str) -> Result<Vec<u8>, IronfishError> {
 
     let hex_iter = hex.as_bytes().chunks_exact(2);
 
-    for (_, hex) in hex_iter.enumerate() {
+    for hex in hex_iter {
         bytes.push(hex_to_u8(hex[0])? << 4 | hex_to_u8(hex[1])?);
     }
 
diff --git a/ironfish-rust/src/test_util.rs b/ironfish-rust/src/test_util.rs
index b015c8c7dd..5e80ebf9f3 100644
--- a/ironfish-rust/src/test_util.rs
+++ b/ironfish-rust/src/test_util.rs
@@ -63,7 +63,6 @@ pub(crate) fn auth_path_to_root_hash(
 /// Helper function to create a list of random identifiers for multisig participants.
 pub fn create_multisig_identities(num_identifiers: usize) -> Vec<Identity> {
     (0..num_identifiers)
-        .into_iter()
         .map(|_| Secret::random(thread_rng()).to_identity())
         .collect()
 }
diff --git a/ironfish-rust/src/transaction/tests.rs b/ironfish-rust/src/transaction/tests.rs
index b83a862c75..5e24aef5a1 100644
--- a/ironfish-rust/src/transaction/tests.rs
+++ b/ironfish-rust/src/transaction/tests.rs
@@ -385,7 +385,6 @@ fn test_transaction_version_is_checked() {
 
     let valid_versions = [1u8, 2u8];
     let invalid_versions = (u8::MIN..=u8::MAX)
-        .into_iter()
         .filter(|v| !valid_versions.contains(v))
         .collect::<Vec<u8>>();
     assert_eq!(invalid_versions.len(), 254);
diff --git a/ironfish-zkp/src/circuits/spend.rs b/ironfish-zkp/src/circuits/spend.rs
index 0b6d658177..7546711dad 100644
--- a/ironfish-zkp/src/circuits/spend.rs
+++ b/ironfish-zkp/src/circuits/spend.rs
@@ -501,7 +501,7 @@ mod test {
 
         let tree_depth = 32;
 
-        let expected_commitment_us = vec![
+        let expected_commitment_us = [
             "43821661663052659750276289184181083197337192946256245809816728673021647664276",
             "3307162152126086816128645612622677680790809218093944138874328908293932504970",
             "11069610839860164669107523771435662310747439806735198902948128278779049984187",
@@ -509,7 +509,7 @@ mod test {
             "21486204115269202361511785053830008932611482941164104173096094940232117952518",
         ];
 
-        let expected_commitment_vs = vec![
+        let expected_commitment_vs = [
             "27630722367128086497290371604583225252915685718989450292520883698391703910",
             "50661753032157861157033186529508424590095922868336394465083465551064239171765",
             "42720677731824278375166374390978871535259136440715287500660141460976255671332",
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index f701aa5354..624eb0ea63 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,2 +1,2 @@
 [toolchain]
-channel = "1.66.1"
+channel = "1.76.0"