clippy all codes (#1214)

1. clippy code
2. add fmt and clippy check in ci

easytier/src/connector/manual.rs

@@ -131,7 +131,7 @@ impl ManualConnectorManager {
             .data
             .connectors
             .iter()
-            .map(|x| x.key().clone().into())
+            .map(|x| x.key().clone())
             .collect();
 
         let dead_urls: BTreeSet<String> = Self::collect_dead_conns(self.data.clone())
@@ -155,12 +155,8 @@ impl ManualConnectorManager {
             );
         }
 
-        let reconnecting_urls: BTreeSet<String> = self
-            .data
-            .reconnecting
-            .iter()
-            .map(|x| x.clone().into())
-            .collect();
+        let reconnecting_urls: BTreeSet<String> =
+            self.data.reconnecting.iter().map(|x| x.clone()).collect();
 
         for conn_url in reconnecting_urls {
             ret.insert(
@@ -282,7 +278,7 @@ impl ManualConnectorManager {
         let remove_later = DashSet::new();
         for it in data.removed_conn_urls.iter() {
             let url = it.key();
-            if let Some(_) = data.connectors.remove(url) {
+            if data.connectors.remove(url).is_some() {
                 tracing::warn!("connector: {}, removed", url);
                 continue;
             } else if data.reconnecting.contains(url) {
@@ -301,11 +297,7 @@ impl ManualConnectorManager {
 
     async fn collect_dead_conns(data: Arc<ConnectorManagerData>) -> BTreeSet<String> {
         Self::handle_remove_connector(data.clone());
-        let all_urls: BTreeSet<String> = data
-            .connectors
-            .iter()
-            .map(|x| x.key().clone().into())
-            .collect();
+        let all_urls: BTreeSet<String> = data.connectors.iter().map(|x| x.key().clone()).collect();
         let mut ret = BTreeSet::new();
         for url in all_urls.iter() {
             if !data.alive_conn_urls.contains(url) {
@@ -400,21 +392,28 @@ impl ManualConnectorManager {
             .await;
             tracing::info!("reconnect: {} done, ret: {:?}", dead_url, ret);
 
-            if ret.is_ok() && ret.as_ref().unwrap().is_ok() {
-                reconn_ret = ret.unwrap();
-                break;
-            } else {
-                if ret.is_err() {
-                    reconn_ret = Err(ret.unwrap_err().into());
-                } else if ret.as_ref().unwrap().is_err() {
-                    reconn_ret = Err(ret.unwrap().unwrap_err());
+            match ret {
+                Ok(Ok(_)) => {
+                    // 外层和内层都成功：解包并跳出
+                    reconn_ret = ret.unwrap();
+                    break;
+                }
+                Ok(Err(e)) => {
+                    // 外层成功，内层失败
+                    reconn_ret = Err(e);
+                }
+                Err(e) => {
+                    // 外层失败
+                    reconn_ret = Err(e.into());
                 }
-                data.global_ctx.issue_event(GlobalCtxEvent::ConnectError(
-                    dead_url.clone(),
-                    format!("{:?}", ip_version),
-                    format!("{:?}", reconn_ret),
-                ));
             }
+
+            // 发送事件（只有在未 break 时才执行）
+            data.global_ctx.issue_event(GlobalCtxEvent::ConnectError(
+                dead_url.clone(),
+                format!("{:?}", ip_version),
+                format!("{:?}", reconn_ret),
+            ));
         }
 
         reconn_ret