diff --git a/feeder/src/prover/execution.rs b/feeder/src/prover/execution.rs
index 5839b157..aab690fa 100644
--- a/feeder/src/prover/execution.rs
+++ b/feeder/src/prover/execution.rs
@@ -78,11 +78,10 @@ fn encode_receipt(receipt: &TransactionReceipt) -> Vec<u8> {
 mod tests {
     use cita_trie::{MemoryDB, PatriciaTrie, Trie};
     use ethers::{
-        types::{Block, Transaction, TransactionReceipt},
         utils::rlp::encode,
     };
     use hasher::HasherKeccak;
-    use std::{fs::File, sync::Arc};
+    use std::{sync::Arc};
     use sync_committee_rs::constants::Root;
     use tokio::test as tokio_test;
 
diff --git a/feeder/src/prover/mocks/mock_execution_rpc.rs b/feeder/src/prover/mocks/mock_execution_rpc.rs
index 5ac1569a..cd28e4ac 100644
--- a/feeder/src/prover/mocks/mock_execution_rpc.rs
+++ b/feeder/src/prover/mocks/mock_execution_rpc.rs
@@ -37,31 +37,31 @@ impl ExecutionAPI for MockExecutionRPC {
         Ok(res)
     }
 
-    async fn get_block(&self, block_number: u64) -> Result<Option<Block<H256>>> {
+    async fn get_block(&self, _block_number: u64) -> Result<Option<Block<H256>>> {
         unimplemented!();
     }
-    async fn get_transaction_receipt(&self, tx_hash: &H256) -> Result<Option<TransactionReceipt>> {
+    async fn get_transaction_receipt(&self, _tx_hash: &H256) -> Result<Option<TransactionReceipt>> {
         unimplemented!();
     }
-    async fn get_blocks(&self, block_numbers: &[u64]) -> Result<Vec<Option<Block<H256>>>> {
+    async fn get_blocks(&self, _block_numbers: &[u64]) -> Result<Vec<Option<Block<H256>>>> {
         unimplemented!();
     }
     async fn get_latest_block_number(&self) -> Result<U64> {
         unimplemented!();
     }
-    async fn get_transaction(&self, tx_hash: &H256) -> Result<Option<Transaction>> {
+    async fn get_transaction(&self, _tx_hash: &H256) -> Result<Option<Transaction>> {
         unimplemented!();
     }
-    async fn get_logs(&self, filter: &Filter) -> Result<Vec<Log>> {
+    async fn get_logs(&self, _filter: &Filter) -> Result<Vec<Log>> {
         unimplemented!();
     }
-    async fn get_filter_changes(&self, filter_id: &U256) -> Result<Vec<Log>> {
+    async fn get_filter_changes(&self, _filter_id: &U256) -> Result<Vec<Log>> {
         unimplemented!();
     }
-    async fn uninstall_filter(&self, filter_id: &U256) -> Result<bool> {
+    async fn uninstall_filter(&self, _filter_id: &U256) -> Result<bool> {
         unimplemented!();
     }
-    async fn get_new_filter(&self, filter: &Filter) -> Result<U256> {
+    async fn get_new_filter(&self, _filter: &Filter) -> Result<U256> {
         unimplemented!();
     }
     async fn chain_id(&self) -> Result<u64> {