From a1b4bdee618d7603d804db4a42fde0bd6d45c053 Mon Sep 17 00:00:00 2001
From: Faraz <2507850+farazshaikh@users.noreply.github.com>
Date: Fri, 12 Mar 2021 00:06:08 -0800
Subject: [PATCH] runtime: mark EnterGuard with must_use (#3609)

---
 tokio/src/runtime/handle.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tokio/src/runtime/handle.rs b/tokio/src/runtime/handle.rs
index 76b28f24e..5de23669b 100644
--- a/tokio/src/runtime/handle.rs
+++ b/tokio/src/runtime/handle.rs
@@ -39,6 +39,7 @@ pub struct Handle {
 ///
 /// [`Runtime::enter`]: fn@crate::runtime::Runtime::enter
 #[derive(Debug)]
+#[must_use = "Creating and dropping a guard does nothing"]
 pub struct EnterGuard<'a> {
     handle: &'a Handle,
     guard: context::EnterGuard,