diff --git a/libs/net4mqtt/src/topic.rs b/libs/net4mqtt/src/topic.rs
index db26d7dd..b4d4470d 100644
--- a/libs/net4mqtt/src/topic.rs
+++ b/libs/net4mqtt/src/topic.rs
@@ -1,19 +1,19 @@
-/// Publish:
-/// TOPIC: <prefix>/<agent id>/<local id>/<label>/<protocol>/<src(address:port)>/<dst(address:port)>
-///
-/// Pub topic example: prefix/agent-0/local-0/i/udp/127.0.0.1:4444/127.0.0.1:4433
-/// Pub topic example: prefix/agent-0/local-0/o/udp/127.0.0.1:4444/127.0.0.1:4433
-///
-/// Subscribe:
-/// TOPIC: <prefix>/< + | agent id>/< + | local id>/<label>/#
-///
-/// Sub topic example: prefix/+/local-0/i/#
-/// Sub topic example: prefix/agent-0/+/o/#
-///
-/// About MQTT online status (Option)
-///
-/// TOPIC: prefix/agent-0/local-0/v/-
-/// Retain: true
+//! Publish:
+//! TOPIC: <prefix>/<agent id>/<local id>/<label>/<protocol>/<src(address:port)>/<dst(address:port)>
+//!
+//! Pub topic example: prefix/agent-0/local-0/i/udp/127.0.0.1:4444/127.0.0.1:4433
+//! Pub topic example: prefix/agent-0/local-0/o/udp/127.0.0.1:4444/127.0.0.1:4433
+//!
+//! Subscribe:
+//! TOPIC: <prefix>/< + | agent id>/< + | local id>/<label>/#
+//!
+//! Sub topic example: prefix/+/local-0/i/#
+//! Sub topic example: prefix/agent-0/+/o/#
+//!
+//! About MQTT online status (Option)
+//!
+//! TOPIC: prefix/agent-0/local-0/v/-
+//! Retain: true
 
 pub const ANY: &str = "+";
 pub const ALL: &str = "#";
diff --git a/libs/signal/src/lib.rs b/libs/signal/src/lib.rs
index 37dd7727..4a66d35b 100644
--- a/libs/signal/src/lib.rs
+++ b/libs/signal/src/lib.rs
@@ -1,4 +1,4 @@
-/// References: https://stackoverflow.com/questions/77585473/rust-tokio-how-to-handle-more-signals-than-just-sigint-i-e-sigquit
+//! References: https://stackoverflow.com/questions/77585473/rust-tokio-how-to-handle-more-signals-than-just-sigint-i-e-sigquit
 
 /// Waits for a signal that requests a graceful shutdown, like SIGTERM or SIGINT.
 #[cfg(unix)]
diff --git a/liveion/src/lib.rs b/liveion/src/lib.rs
index 8ebe78d8..42e5fa89 100644
--- a/liveion/src/lib.rs
+++ b/liveion/src/lib.rs
@@ -6,7 +6,7 @@ use tokio::net::TcpListener;
 use tower_http::{
     cors::CorsLayer, trace::TraceLayer, validate_request::ValidateRequestHeaderLayer,
 };
-use tracing::{error, info_span, warn, Level};
+use tracing::{error, info_span, Level};
 
 use auth::{access::access_middleware, ManyValidate};
 use error::AppError;
@@ -110,7 +110,9 @@ where
                             )
                             .await
                             {
-                                Ok(_) => warn!("net4mqtt service is end, restart net4mqtt service"),
+                                Ok(_) => tracing::warn!(
+                                    "net4mqtt service is end, restart net4mqtt service"
+                                ),
                                 Err(e) => error!("mqtt4mqtt error: {:?}", e),
                             }
                             tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;
diff --git a/liveman/src/lib.rs b/liveman/src/lib.rs
index 8f953da1..bad1ed60 100644
--- a/liveman/src/lib.rs
+++ b/liveman/src/lib.rs
@@ -6,7 +6,7 @@ use tokio::net::TcpListener;
 use tower_http::{
     cors::CorsLayer, trace::TraceLayer, validate_request::ValidateRequestHeaderLayer,
 };
-use tracing::{error, info, info_span, warn};
+use tracing::{error, info, info_span};
 
 use crate::admin::{authorize, token};
 use crate::config::Config;
@@ -97,7 +97,9 @@ where
                             )
                             .await
                             {
-                                Ok(_) => warn!("net4mqtt service is end, restart net4mqtt service"),
+                                Ok(_) => tracing::warn!(
+                                    "net4mqtt service is end, restart net4mqtt service"
+                                ),
                                 Err(e) => error!("mqtt4mqtt error: {:?}", e),
                             }
                             tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;