fix: and clippy

Author: =

crates/rmcp/tests/test_with_js.rs

@@ -10,7 +10,7 @@ const BIND_ADDRESS: &str = "127.0.0.1:8000";
 
 #[tokio::test]
 async fn test_with_js_client() -> anyhow::Result<()> {
-    tracing_subscriber::registry()
+    let _ = tracing_subscriber::registry()
         .with(
             tracing_subscriber::EnvFilter::try_from_default_env()
                 .unwrap_or_else(|_| "debug".to_string().into()),