diff --git a/util/src/table.rs b/util/src/table.rs
index f04a498f8..e41209608 100644
--- a/util/src/table.rs
+++ b/util/src/table.rs
@@ -111,7 +111,7 @@ impl<Row, Col, Val> Table<Row, Col, Val>
 	///
 	/// Returns previous value (if any)
 	pub fn insert(&mut self, row: Row, col: Col, val: Val) -> Option<Val> {
-		self.map.entry(row).or_insert_with(|| HashMap::new()).insert(col, val)
+		self.map.entry(row).or_insert_with(HashMap::new).insert(col, val)
 	}
 }
 
diff --git a/util/src/uint.rs b/util/src/uint.rs
index 88256d5f2..068456334 100644
--- a/util/src/uint.rs
+++ b/util/src/uint.rs
@@ -1982,6 +1982,7 @@ mod tests {
 
 
 	#[test]
+	#[cfg_attr(feature = "dev", allow(cyclomatic_complexity))]
 	fn u256_multi_full_mul() {
 		let result = U256([0, 0, 0, 0]).full_mul(U256([0, 0, 0, 0]));
 		assert_eq!(U512([0, 0, 0, 0, 0, 0, 0, 0]), result);