added error handling in metrics handle

WatcherAgent/src/main.rs

@@ -153,7 +153,13 @@ async fn main() -> Result<(), Box<dyn Error + Send + Sync>> {
         let docker_manager = docker_manager.as_ref().cloned().unwrap();
         async move {
             let mut collector = metrics::Collector::new(server_id, ip, docker_manager);
-            collector.run(&server_url).await
+            if let Err(e) = collector.run(&server_url).await {
+                eprintln!("Metrics collection error: {}", e);
+                // Don't panic, just return the error
+                Err(e)
+            } else {
+                Ok(())
+            }
         }
     });