From 85a3ef6783eb1ba35514c023ca717f1ddef3b0bf Mon Sep 17 00:00:00 2001
From: Thomas de Zeeuw <thomasdezeeuw@gmail.com>
Date: Thu, 25 Mar 2021 10:18:02 +0100
Subject: [PATCH] Allow use of deprecated atomic::spin_loop_hint

It's replaced by hint::spin_loop, however that has only been stable
since 1.49.0. Since we still support 1.31.0 we can't use it. Once the
MSRV is updated to 1.49 we can use hint::spin_loop.
---
 src/lib.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/lib.rs b/src/lib.rs
index bbfb1ed31..fd680de75 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1362,6 +1362,8 @@ where
         }
         INITIALIZING => {
             while STATE.load(Ordering::SeqCst) == INITIALIZING {
+                // TODO: replace with `hint::spin_loop` once MSRV is 1.49.0.
+                #[allow(deprecated)]
                 std::sync::atomic::spin_loop_hint();
             }
             Err(SetLoggerError(()))