From 07eb2c1280708c6e9ec6f5a4e4aacb84d7e8b4b5 Mon Sep 17 00:00:00 2001
From: Fenhl <fenhl@fenhl.net>
Date: Sat, 14 Dec 2019 17:43:22 +0000
Subject: [PATCH] Make WriteFmtFuture must_use

Fixes #627. Thanks to @jebrosen for pointing out the location of the issue.
---
 src/io/write/write_fmt.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/io/write/write_fmt.rs b/src/io/write/write_fmt.rs
index ec7847f..d20c41d 100644
--- a/src/io/write/write_fmt.rs
+++ b/src/io/write/write_fmt.rs
@@ -6,6 +6,7 @@ use crate::task::{Context, Poll};
 
 #[doc(hidden)]
 #[allow(missing_debug_implementations)]
+#[must_use]
 pub struct WriteFmtFuture<'a, T: Unpin + ?Sized> {
     pub(crate) writer: &'a mut T,
     pub(crate) res: Option<io::Result<Vec<u8>>>,