diff --git a/src/agent/rustjail/src/mount.rs b/src/agent/rustjail/src/mount.rs
index 74742c0ffe..c36f840714 100644
--- a/src/agent/rustjail/src/mount.rs
+++ b/src/agent/rustjail/src/mount.rs
@@ -786,12 +786,25 @@ fn mount_from(
                 "create dir {}: {}",
                 dir.to_str().unwrap(),
                 e.to_string()
-            )
-        });
+            );
+            e
+        })?;
 
         // make sure file exists so we can bind over it
         if !src.is_dir() {
-            let _ = OpenOptions::new().create(true).write(true).open(&dest);
+            let _ = OpenOptions::new()
+                .create(true)
+                .write(true)
+                .open(&dest)
+                .map_err(|e| {
+                    log_child!(
+                        cfd_log,
+                        "open/create dest error. {}: {:?}",
+                        dest.as_str(),
+                        e
+                    );
+                    e
+                })?;
         }
         src.to_str().unwrap().to_string()
     } else {
@@ -804,8 +817,10 @@ fn mount_from(
         }
     };
 
-    let _ = stat::stat(dest.as_str())
-        .map_err(|e| log_child!(cfd_log, "dest stat error. {}: {:?}", dest.as_str(), e));
+    let _ = stat::stat(dest.as_str()).map_err(|e| {
+        log_child!(cfd_log, "dest stat error. {}: {:?}", dest.as_str(), e);
+        e
+    })?;
 
     mount(
         Some(src.as_str()),
diff --git a/src/agent/src/main.rs b/src/agent/src/main.rs
index 6a023e093e..2ebd7a3fbd 100644
--- a/src/agent/src/main.rs
+++ b/src/agent/src/main.rs
@@ -110,10 +110,6 @@ enum SubCommand {
 fn announce(logger: &Logger, config: &AgentConfig) {
     info!(logger, "announce";
     "agent-commit" => version::VERSION_COMMIT,
-
-    // Avoid any possibility of confusion with the old agent
-    "agent-type" => "rust",
-
     "agent-version" =>  version::AGENT_VERSION,
     "api-version" => version::API_VERSION,
     "config" => format!("{:?}", config),
diff --git a/src/agent/src/netlink.rs b/src/agent/src/netlink.rs
index 1de4ef6920..c6fc9c2079 100644
--- a/src/agent/src/netlink.rs
+++ b/src/agent/src/netlink.rs
@@ -64,7 +64,7 @@ impl Handle {
     pub async fn update_interface(&mut self, iface: &Interface) -> Result<()> {
         // The reliable way to find link is using hardware address
         // as filter. However, hardware filter might not be supported
-        // by netlink, we may have to dump link list and the find the
+        // by netlink, we may have to dump link list and then find the
         // target link. filter using name or family is supported, but
         // we cannot use that to find target link.
         // let's try if hardware address filter works. -_-
@@ -178,7 +178,7 @@ impl Handle {
                 .with_context(|| format!("Failed to parse MAC address: {}", addr))?;
 
             // Hardware filter might not be supported by netlink,
-            // we may have to dump link list and the find the target link.
+            // we may have to dump link list and then find the target link.
             stream
                 .try_filter(|f| {
                     let result = f.nlas.iter().any(|n| match n {