diff --git a/actix-server/examples/tcp-echo.rs b/actix-server/examples/tcp-echo.rs
index 37d7ad00..d244d6bd 100644
--- a/actix-server/examples/tcp-echo.rs
+++ b/actix-server/examples/tcp-echo.rs
@@ -23,6 +23,7 @@ use actix_service::{fn_service, ServiceFactoryExt as _};
 use bytes::BytesMut;
 use futures_util::future::ok;
 use tokio::io::{AsyncReadExt as _, AsyncWriteExt as _};
+use tracing::{error, info};
 
 async fn run() -> io::Result<()> {
     tracing_subscriber::fmt::init();
diff --git a/actix-server/tests/server.rs b/actix-server/tests/server.rs
index 0a70402b..ec3155c9 100644
--- a/actix-server/tests/server.rs
+++ b/actix-server/tests/server.rs
@@ -254,6 +254,7 @@ async fn test_max_concurrent_connections() {
     h.join().unwrap().unwrap();
 }
 
+// TODO: race-y failures detected due to integer underflow when calling Counter::total
 #[actix_rt::test]
 async fn test_service_restart() {
     use std::task::{Context, Poll};