From 630d3136dd863b26e7bfbd3e145f63d92f591243 Mon Sep 17 00:00:00 2001
From: Steven Fackler <sfackler@gmail.com>
Date: Wed, 30 Oct 2019 23:21:03 -0400
Subject: [PATCH] timere: make Delay must_use (#1714)

Closes #1711
---
 tokio/src/timer/delay.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tokio/src/timer/delay.rs b/tokio/src/timer/delay.rs
index a48510f4b..a4e9e3252 100644
--- a/tokio/src/timer/delay.rs
+++ b/tokio/src/timer/delay.rs
@@ -21,6 +21,7 @@ use std::time::{Duration, Instant};
 ///
 /// [`new`]: #method.new
 #[derive(Debug)]
+#[must_use = "futures do nothing unless you `.await` or poll them"]
 pub struct Delay {
     /// The link between the `Delay` instance at the timer that drives it.
     ///