From 71a909799b331ad3bc2ac07e7f5fd8b9fd235028 Mon Sep 17 00:00:00 2001
From: Sam Kirby <sam.kirby94@hotmail.co.uk>
Date: Tue, 2 Jan 2024 22:18:37 +0000
Subject: [PATCH] Add `must_use` attribute to `Serve`

This commit adds the `must_use` attribute to `Serve` and
`WithGracefulShutdown` so that a failure to await these raises a
diagnostic message.
---
 axum/src/serve.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/axum/src/serve.rs b/axum/src/serve.rs
index 9850af2787f..b253cb5defd 100644
--- a/axum/src/serve.rs
+++ b/axum/src/serve.rs
@@ -108,6 +108,7 @@ where
 
 /// Future returned by [`serve`].
 #[cfg(all(feature = "tokio", any(feature = "http1", feature = "http2")))]
+#[must_use = "futures must be awaited or polled"]
 pub struct Serve<M, S> {
     tcp_listener: TcpListener,
     make_service: M,
@@ -234,6 +235,7 @@ where
 
 /// Serve future with graceful shutdown enabled.
 #[cfg(all(feature = "tokio", any(feature = "http1", feature = "http2")))]
+#[must_use = "futures must be awaited or polled"]
 pub struct WithGracefulShutdown<M, S, F> {
     tcp_listener: TcpListener,
     make_service: M,