diff --git a/blockchain/chain_sync/src/network_context.rs b/blockchain/chain_sync/src/network_context.rs
index ba814bafd0e4..007e9825bd2f 100644
--- a/blockchain/chain_sync/src/network_context.rs
+++ b/blockchain/chain_sync/src/network_context.rs
@@ -17,7 +17,7 @@ use forest_libp2p::{
 use futures::channel::oneshot::channel as oneshot_channel;
 use ipld_blockstore::BlockStore;
 use libp2p::core::PeerId;
-use log::{trace, warn};
+use log::{debug, trace, warn};
 use std::convert::TryFrom;
 use std::sync::Arc;
 use std::time::{Duration, SystemTime};
@@ -191,7 +191,7 @@ where
                                 break;
                             }
                             Err(e) => {
-                                warn!("Failed chain_exchange response: {}", e);
+                                debug!("Failed chain_exchange response: {}", e);
                                 continue;
                             }
                         },
diff --git a/crypto/src/signature.rs b/crypto/src/signature.rs
index 10dbccb74ca5..f7b7d1f591ed 100644
--- a/crypto/src/signature.rs
+++ b/crypto/src/signature.rs
@@ -277,7 +277,7 @@ mod tests {
         let mut secp_addr = Address::new_secp256k1(&pub_key.serialize()).unwrap();
         for network in [Network::Mainnet, Network::Testnet] {
             let address = secp_addr.set_network(network);
-            assert!(verify_secp256k1_sig(&signature, &data, &address).is_ok());
+            assert!(verify_secp256k1_sig(&signature, &data, address).is_ok());
         }
     }
 
@@ -314,7 +314,7 @@ mod tests {
     }
 
     fn generate_signature(priv_key: &SecretKey, msg: &Message) -> [u8; 65] {
-        let (sig, recovery_id) = sign(&msg, &priv_key);
+        let (sig, recovery_id) = sign(msg, priv_key);
         let mut signature = [0; 65];
         signature[..64].copy_from_slice(&sig.serialize());
         signature[64] = recovery_id.serialize();