diff --git a/src/bin/sdlan-sn/main.rs b/src/bin/sdlan-sn/main.rs
index 48ce8bd..0f9b38c 100644
--- a/src/bin/sdlan-sn/main.rs
+++ b/src/bin/sdlan-sn/main.rs
@@ -34,7 +34,7 @@ async fn client(address: &str) -> Result<()> {
         tokio::time::sleep(Duration::from_millis(5000)).await;
     }
 
-    Ok(())
+    // Ok(())
 }
 
 #[tokio::main]
@@ -77,10 +77,10 @@ async fn main() -> Result<()> {
         });
     }
 
-    Ok(())
+    // Ok(())
 }
 
-async fn handle_packet(pkt: &[u8], from: SocketAddr) -> Result<()> {
+async fn handle_packet(pkt: &[u8], _: SocketAddr) -> Result<()> {
     let common = packet::Common::from_slice(pkt)?;
     println!("common: {:?}", common);
     Ok(())
diff --git a/src/bin/sdlan-sn/utils/sn.rs b/src/bin/sdlan-sn/utils/sn.rs
index 642414f..04a6c93 100644
--- a/src/bin/sdlan-sn/utils/sn.rs
+++ b/src/bin/sdlan-sn/utils/sn.rs
@@ -19,7 +19,7 @@ use once_cell::sync::OnceCell;
 static SN: OnceCell<SuperNode> = OnceCell::new();
 
 pub fn init_supernode(sn: SuperNode) -> Result<()> {
-    if let Err(e) = SN.set(sn) {
+    if let Err(_) = SN.set(sn) {
         return Err(SDLanError::NormalError("initialize sn error"));
     }
     Ok(())