diff --git a/emulator/src/state.rs b/emulator/src/state.rs
index b8595f6b..b8f30de1 100644
--- a/emulator/src/state.rs
+++ b/emulator/src/state.rs
@@ -543,10 +543,8 @@ impl InstrumentedState {
                     u32::from_be_bytes(core::array::from_fn(|j| result[i * 4 + j]))
                 });
                 assert!(result.len() == 8);
-                for i in 0..result.len() {
-                    self.state
-                        .memory
-                        .set_memory(a2 + ((i << 2) as u32), result[i]);
+                for (i, data) in result.iter().enumerate() {
+                    self.state.memory.set_memory(a2 + ((i << 2) as u32), *data);
                 }
             }
             0xF0 => {
diff --git a/runtime/precompiles/src/io.rs b/runtime/precompiles/src/io.rs
index 2f730293..68f08c40 100644
--- a/runtime/precompiles/src/io.rs
+++ b/runtime/precompiles/src/io.rs
@@ -117,10 +117,11 @@ pub fn keccak(data: &[u8]) -> [u8; 32] {
     let mut u32_array = Vec::new();
 
     if len == 0 {
-        return [0xC5, 0xD2, 0x46, 0x01, 0x86, 0xF7, 0x23, 0x3C,
-                0x92, 0x7E, 0x7D, 0xB2, 0xDC, 0xC7, 0x03, 0xC0,
-                0xE5, 0   , 0xB6, 0x53, 0xCA, 0x82, 0x27, 0x3B,
-                0x7B, 0xFA, 0xD8, 0x04, 0x5D, 0x85, 0xA4, 0x70];
+        return [
+            0xC5, 0xD2, 0x46, 0x01, 0x86, 0xF7, 0x23, 0x3C, 0x92, 0x7E, 0x7D, 0xB2, 0xDC, 0xC7,
+            0x03, 0xC0, 0xE5, 0, 0xB6, 0x53, 0xCA, 0x82, 0x27, 0x3B, 0x7B, 0xFA, 0xD8, 0x04, 0x5D,
+            0x85, 0xA4, 0x70,
+        ];
     }
 
     // 每 4 个字节转换为一个 u32