diff --git a/crates/chain-state/src/cached_provider.rs b/crates/chain-state/src/cached_provider.rs
index 379098372..31b7e4afa 100644
--- a/crates/chain-state/src/cached_provider.rs
+++ b/crates/chain-state/src/cached_provider.rs
@@ -51,7 +51,7 @@ pub struct CachedStateProvider {
 }
 
 impl CachedStateProvider {
-    /// Create a new CachedStateProvider
+    /// Create a new `CachedStateProvider`
     pub fn new(
         underlying: Box<dyn StateProvider>,
         state_cache: &'static dyn StateCache<
diff --git a/crates/engine/tree/src/cache/mod.rs b/crates/engine/tree/src/cache/mod.rs
index 0536189dd..1bd4045e9 100644
--- a/crates/engine/tree/src/cache/mod.rs
+++ b/crates/engine/tree/src/cache/mod.rs
@@ -1,3 +1,4 @@
+#[allow(clippy::type_complexity)]
 mod plain_state;
 pub use plain_state::CACHED_PLAIN_STATES;
 
diff --git a/crates/engine/tree/src/cache/plain_state.rs b/crates/engine/tree/src/cache/plain_state.rs
index b16502217..0a1ef1577 100644
--- a/crates/engine/tree/src/cache/plain_state.rs
+++ b/crates/engine/tree/src/cache/plain_state.rs
@@ -16,17 +16,17 @@ type AddressStorageKey = (Address, StorageKey);
 
 lazy_static! {
     /// Account cache
-    static ref ACCOUNT_CACHE: Cache<Address, Account> = Cache::new(ACCOUNT_CACHE_SIZE);
+    static ref PLAIN_ACCOUNTS: Cache<Address, Account> = Cache::new(ACCOUNT_CACHE_SIZE);
 
     /// Storage cache
-    static ref STORAGE_CACHE: Cache<AddressStorageKey, StorageValue> = Cache::new(STORAGE_CACHE_SIZE);
+    static ref PLAIN_STORAGES: Cache<AddressStorageKey, StorageValue> = Cache::new(STORAGE_CACHE_SIZE);
 
     /// Contract cache
     /// The size of contract is large and the hot contracts should be limited.
-    static ref CONTRACT_CACHE: Cache<B256, Bytecode> = Cache::new(CONTRACT_CACHE_SIZE);
+    static ref PLAIN_CONTRACTS: Cache<B256, Bytecode> = Cache::new(CONTRACT_CACHE_SIZE);
 
     /// Cached plain states
-    pub static ref CACHED_PLAIN_STATES: (&'static Cache<Address, Account>, &'static Cache<AddressStorageKey, StorageValue>,  &'static Cache<B256, Bytecode>) = (&ACCOUNT_CACHE, &STORAGE_CACHE, &CONTRACT_CACHE);
+    pub static ref CACHED_PLAIN_STATES: (&'static Cache<Address, Account>, &'static Cache<AddressStorageKey, StorageValue>,  &'static Cache<B256, Bytecode>) = (&PLAIN_ACCOUNTS, &PLAIN_STORAGES, &PLAIN_CONTRACTS);
 }
 
 // Implementing StateCache trait for CACHED_PLAIN_STATES
@@ -94,10 +94,10 @@ pub(crate) fn write_plain_state(bundle: BundleState) {
     for (address, account_info) in &change_set.accounts {
         match account_info {
             None => {
-                ACCOUNT_CACHE.remove(address);
+                PLAIN_ACCOUNTS.remove(address);
             }
             Some(acc) => {
-                ACCOUNT_CACHE.insert(
+                PLAIN_ACCOUNTS.insert(
                     *address,
                     Account {
                         nonce: acc.nonce,
@@ -115,14 +115,13 @@ pub(crate) fn write_plain_state(bundle: BundleState) {
         if storage.wipe_storage {
             to_wipe = true;
             break;
-        } else {
-            for (k, v) in storage.storage.clone() {
-                STORAGE_CACHE.insert((storage.address, StorageKey::from(k)), v);
-            }
+        }
+        for (k, v) in storage.storage.clone() {
+            PLAIN_STORAGES.insert((storage.address, StorageKey::from(k)), v);
         }
     }
     if to_wipe {
-        STORAGE_CACHE.clear();
+        PLAIN_STORAGES.clear();
     }
 }
 
diff --git a/crates/engine/tree/src/tree/metrics.rs b/crates/engine/tree/src/tree/metrics.rs
index c5d699438..566e50d7e 100644
--- a/crates/engine/tree/src/tree/metrics.rs
+++ b/crates/engine/tree/src/tree/metrics.rs
@@ -1,8 +1,8 @@
+pub(crate) use metrics::histogram;
 use reth_metrics::{
     metrics::{Counter, Gauge, Histogram},
     Metrics,
 };
-pub(crate) use metrics::histogram as histogram;
 
 /// Metrics for the `EngineApi`.
 #[derive(Metrics)]
diff --git a/crates/engine/tree/src/tree/mod.rs b/crates/engine/tree/src/tree/mod.rs
index 24fa233c8..65c249ec1 100644
--- a/crates/engine/tree/src/tree/mod.rs
+++ b/crates/engine/tree/src/tree/mod.rs
@@ -1785,7 +1785,7 @@ where
         let elapsed = exec_time.elapsed();
         debug!(target: "engine", elapsed=?elapsed, ?block_number, "Executed block");
         metrics::histogram!("execution.total").record(elapsed.as_nanos() as f64);
-        
+
         self.consensus.validate_block_post_execution(
             &block,
             PostExecutionInput::new(&output.receipts, &output.requests),
@@ -1802,7 +1802,7 @@ where
             )
             .into())
         }
-        let elapsed=root_time.elapsed();
+        let elapsed = root_time.elapsed();
         debug!(target: "engine", elapsed=?elapsed, ?block_number, "Calculated state root");
         metrics::histogram!("state-root.total").record(elapsed.as_nanos() as f64);
 
diff --git a/crates/storage/provider/src/test_utils/mock.rs b/crates/storage/provider/src/test_utils/mock.rs
index be328b1dd..6ea3a649a 100644
--- a/crates/storage/provider/src/test_utils/mock.rs
+++ b/crates/storage/provider/src/test_utils/mock.rs
@@ -603,11 +603,11 @@ impl StateRootProvider for MockEthProvider {
 
     fn state_root_from_nodes_caches_with_updates(
         &self,
-        nodes: TrieUpdates,
-        hashed_state: HashedPostState,
-        prefix_sets: TriePrefixSetsMut,
-        hashed_cache: &'static dyn TrieCache<B256, Account, (B256, B256), U256>,
-        trie_cache: &'static dyn TrieCache<
+        _nodes: TrieUpdates,
+        _hashed_state: HashedPostState,
+        _prefix_sets: TriePrefixSetsMut,
+        _hashed_cache: &'static dyn TrieCache<B256, Account, (B256, B256), U256>,
+        _trie_cache: &'static dyn TrieCache<
             Nibbles,
             BranchNodeCompact,
             (B256, Nibbles),
diff --git a/crates/storage/provider/src/test_utils/noop.rs b/crates/storage/provider/src/test_utils/noop.rs
index bdc765255..811ff08a1 100644
--- a/crates/storage/provider/src/test_utils/noop.rs
+++ b/crates/storage/provider/src/test_utils/noop.rs
@@ -354,11 +354,11 @@ impl StateRootProvider for NoopProvider {
 
     fn state_root_from_nodes_caches_with_updates(
         &self,
-        nodes: TrieUpdates,
-        hashed_state: HashedPostState,
-        prefix_sets: TriePrefixSetsMut,
-        hashed_cache: &'static dyn TrieCache<B256, Account, (B256, B256), U256>,
-        trie_cache: &'static dyn TrieCache<
+        _nodes: TrieUpdates,
+        _hashed_state: HashedPostState,
+        _prefix_sets: TriePrefixSetsMut,
+        _hashed_cache: &'static dyn TrieCache<B256, Account, (B256, B256), U256>,
+        _trie_cache: &'static dyn TrieCache<
             Nibbles,
             BranchNodeCompact,
             (B256, Nibbles),
diff --git a/crates/trie/db/src/cached_trie_cursor.rs b/crates/trie/db/src/cached_trie_cursor.rs
index 3f78907de..2972201f1 100644
--- a/crates/trie/db/src/cached_trie_cursor.rs
+++ b/crates/trie/db/src/cached_trie_cursor.rs
@@ -121,14 +121,14 @@ where
             return Ok(Some((key, result)))
         };
 
-        return match self.cursor.seek(StoredNibbles(key))? {
+        match self.cursor.seek(StoredNibbles(key))? {
             Some(value) => {
                 self.trie_cache.insert_account(value.0 .0.clone(), value.1.clone());
 
                 Ok(Some((value.0 .0, value.1)))
             }
             None => Ok(None),
-        };
+        }
     }
 
     /// Move the cursor to the next entry in the account trie.
@@ -136,7 +136,7 @@ where
         &mut self,
         last: Nibbles,
     ) -> Result<Option<(Nibbles, BranchNodeCompact)>, DatabaseError> {
-        let _ = self.cursor.seek(StoredNibbles(last.clone()))?;
+        let _ = self.cursor.seek(StoredNibbles(last))?;
         match self.cursor.next()? {
             Some(value) => {
                 self.trie_cache.insert_account(value.0 .0.clone(), value.1.clone());
@@ -236,7 +236,7 @@ where
             return Ok(Some((key, result)))
         };
 
-        return match self
+        match self
             .cursor
             .seek_by_key_subkey(self.hashed_address, StoredNibblesSubKey(key.clone()))?
         {
@@ -251,7 +251,7 @@ where
                 }
             }
             None => Ok(None),
-        };
+        }
     }
 
     /// Seek a key in the storage trie that matches or is greater than the provided key.
@@ -264,10 +264,7 @@ where
             return Ok(Some((key, result)))
         };
 
-        return match self
-            .cursor
-            .seek_by_key_subkey(self.hashed_address, StoredNibblesSubKey(key))?
-        {
+        match self.cursor.seek_by_key_subkey(self.hashed_address, StoredNibblesSubKey(key))? {
             Some(value) => {
                 let key = (self.hashed_address, value.nibbles.0.clone());
                 self.trie_cache.insert_storage(key, value.node.clone());
@@ -275,7 +272,7 @@ where
                 Ok(Some((value.nibbles.0, value.node)))
             }
             None => Ok(None),
-        };
+        }
     }
 
     /// Move the cursor to the next entry in the storage trie.