diff --git a/clippy.toml b/clippy.toml
index f234c901..b339f7c3 100644
--- a/clippy.toml
+++ b/clippy.toml
@@ -1 +1 @@
-msrv = "1.83"
+msrv = "1.85"
diff --git a/crates/shadowsocks-service/src/local/fake_dns/manager.rs b/crates/shadowsocks-service/src/local/fake_dns/manager.rs
index 90d56c18..7bad1367 100644
--- a/crates/shadowsocks-service/src/local/fake_dns/manager.rs
+++ b/crates/shadowsocks-service/src/local/fake_dns/manager.rs
@@ -297,7 +297,7 @@ impl FakeDnsManager {
                     // Ok. It is not expired yet. Try to extend its expire time.
                     ip_mapping.expire_time = now + self.expire_duration.as_secs() as i64;
                     let nv = ip_mapping.encode_to_vec()?;
-                    let _ = db.put(&ip2name_key, nv)?;
+                    db.put(&ip2name_key, nv)?;
 
                     // Update name2ip's expire time
 
@@ -313,7 +313,7 @@ impl FakeDnsManager {
                                 let mut domain_name_mapping = proto::DomainNameMapping::decode(&v)?;
                                 domain_name_mapping.expire_time = ip_mapping.expire_time;
                                 let nv = domain_name_mapping.encode_to_vec()?;
-                                let _ = db.put(&name2ip_key, nv)?;
+                                db.put(&name2ip_key, nv)?;
                             }
                             None => {
                                 // Interesting. No name2ip.
diff --git a/crates/shadowsocks-service/src/local/net/udp/association.rs b/crates/shadowsocks-service/src/local/net/udp/association.rs
index ffc45a55..9229ba2d 100644
--- a/crates/shadowsocks-service/src/local/net/udp/association.rs
+++ b/crates/shadowsocks-service/src/local/net/udp/association.rs
@@ -447,19 +447,14 @@ where
                     err
                 );
             }
-        } else {
-            match self.dispatch_received_proxied_packet(target_addr, data).await {
-                Err(err) => {
-                    error!(
-                        "udp relay {} -> {} (proxied) with {} bytes, error: {}",
-                        self.peer_addr,
-                        target_addr,
-                        data.len(),
-                        err
-                    );
-                }
-                _ => {}
-            }
+        } else if let Err(err) = self.dispatch_received_proxied_packet(target_addr, data).await {
+            error!(
+                "udp relay {} -> {} (proxied) with {} bytes, error: {}",
+                self.peer_addr,
+                target_addr,
+                data.len(),
+                err
+            );
         }
     }