diff --git a/easytier/src/common/config.rs b/easytier/src/common/config.rs
index dc5f1a0f..c2abe366 100644
--- a/easytier/src/common/config.rs
+++ b/easytier/src/common/config.rs
@@ -6,9 +6,9 @@ use std::{
 };
 
 use anyhow::Context;
-use base64::{prelude::BASE64_STANDARD, Engine as _};
-use clap::builder::PossibleValue;
+use base64::{Engine as _, prelude::BASE64_STANDARD};
 use clap::ValueEnum;
+use clap::builder::PossibleValue;
 use serde::{Deserialize, Serialize};
 use strum::{Display, EnumString, VariantArray};
 use tokio::io::AsyncReadExt as _;
@@ -584,7 +584,12 @@ impl ConfigLoader for TomlConfigLoader {
             .filter(|h| !h.is_empty());
 
         self.set_hostname(hostname.clone());
-        hostname.unwrap_or_else(|| hostname::get().unwrap_or_default().to_string_lossy().into_owned())
+        hostname.unwrap_or_else(|| {
+            hostname::get()
+                .unwrap_or_default()
+                .to_string_lossy()
+                .into_owned()
+        })
     }
 
     fn set_hostname(&self, name: Option<String>) {
diff --git a/easytier/src/common/global_ctx.rs b/easytier/src/common/global_ctx.rs
index d648c07d..a3cf4e5a 100644
--- a/easytier/src/common/global_ctx.rs
+++ b/easytier/src/common/global_ctx.rs
@@ -6,7 +6,7 @@ use sha2::Sha256;
 use socket2::Protocol;
 use std::sync::RwLock;
 use std::{
-    collections::{hash_map::DefaultHasher, HashMap},
+    collections::{HashMap, hash_map::DefaultHasher},
     hash::Hasher,
     iter,
     net::{IpAddr, SocketAddr},
@@ -15,11 +15,11 @@ use std::{
 };
 
 use super::{
+    PeerId,
     config::{ConfigLoader, Flags},
     netns::NetNS,
     network::IPCollector,
     stun::{StunInfoCollector, StunInfoCollectorTrait},
-    PeerId,
 };
 #[cfg(feature = "magic-dns")]
 use crate::dns::{
diff --git a/easytier/src/dns/config/dns.rs b/easytier/src/dns/config/dns.rs
index 702b3590..3d6a5f95 100644
--- a/easytier/src/dns/config/dns.rs
+++ b/easytier/src/dns/config/dns.rs
@@ -51,7 +51,12 @@ impl DnsConfig {
 impl DnsConfig {
     pub fn get_name(&self) -> LowerName {
         if self.name.is_empty() {
-            parse(hostname::get().unwrap_or_default().to_string_lossy().as_ref())
+            parse(
+                hostname::get()
+                    .unwrap_or_default()
+                    .to_string_lossy()
+                    .as_ref(),
+            )
         } else {
             self.name.clone()
         }
diff --git a/easytier/src/instance/proxy_cidrs_monitor.rs b/easytier/src/instance/proxy_cidrs_monitor.rs
index 796e6093..26f14bfe 100644
--- a/easytier/src/instance/proxy_cidrs_monitor.rs
+++ b/easytier/src/instance/proxy_cidrs_monitor.rs
@@ -72,7 +72,7 @@ impl ProxyCidrsMonitor {
     pub fn start(self) -> ScopedTask<()> {
         ScopedTask::from(tokio::spawn(async move {
             let mut cur_proxy_cidrs = BTreeSet::new();
-            // let last_update = None::<Instant>;
+            // let mut last_update = None::<Instant>;
 
             loop {
                 tokio::time::sleep(std::time::Duration::from_secs(1)).await;
diff --git a/easytier/src/web_client/mod.rs b/easytier/src/web_client/mod.rs
index 9db012f3..50681478 100644
--- a/easytier/src/web_client/mod.rs
+++ b/easytier/src/web_client/mod.rs
@@ -225,7 +225,12 @@ pub async fn run_web_client(
     let mut flags = global_ctx.get_flags();
     flags.bind_device = false;
     global_ctx.set_flags(flags);
-    let hostname = hostname.unwrap_or_else(|| hostname::get().unwrap_or_default().to_string_lossy().into_owned());
+    let hostname = hostname.unwrap_or_else(|| {
+        hostname::get()
+            .unwrap_or_default()
+            .to_string_lossy()
+            .into_owned()
+    });
     Ok(WebClient::new(
         create_connector_by_url(c_url.as_str(), &global_ctx, IpVersion::Both).await?,
         token.to_string(),