fix cargo clippy warnings

Author: nategraf

steel/src/mpt.rs

@@ -498,7 +498,7 @@ mod tests {
     #[test]
     pub fn mpt_short() {
         // 4 leaves with 1-byte long keys, the resulting root node should be shorter than 32 bytes
-        let leaves: BTreeMap<_, _> = (0..4u8).map(|i| (Nibbles::unpack(&[i]), vec![0])).collect();
+        let leaves: BTreeMap<_, _> = (0..4u8).map(|i| (Nibbles::unpack([i]), vec![0])).collect();
 
         // construct the root hash and inclusion proofs for all leaves
         let proof_keys = leaves.keys().cloned().collect();

steel/tests/corruption.rs

@@ -175,7 +175,7 @@ fn get_leaf_val_mut(trie: &mut Value) -> Option<&mut Value> {
                 "Extension" => get_leaf_val_mut(&mut value[1]),
                 "Branch" => {
                     let children = value.as_array_mut().unwrap();
-                    children.into_iter().find_map(|c| get_leaf_val_mut(c))
+                    children.iter_mut().find_map(|c| get_leaf_val_mut(c))
                 }
                 "Digest" => None,
                 _ => unreachable!(),
@@ -213,7 +213,7 @@ async fn corrupt_storage_trie() {
 
     // corrupt the trie by getting the first child node and deleting it
     let child_array = storage_trie_value["Branch"].as_array_mut().unwrap();
-    let child_value = child_array.into_iter().find(|c| !c.is_null()).unwrap();
+    let child_value = child_array.iter_mut().find(|c| !c.is_null()).unwrap();
     *child_value = Value::Null;
 
     // executing this on the guest should panic
@@ -253,7 +253,7 @@ async fn corrupt_state_trie() {
 
     // corrupt the trie by getting the first child node and deleting it
     let children = state_trie_value["Branch"].as_array_mut().unwrap();
-    let child_value = children.into_iter().find(|c| !c.is_null()).unwrap();
+    let child_value = children.iter_mut().find(|c| !c.is_null()).unwrap();
     *child_value = Value::Null;
 
     // executing this on the guest should panic