From 6ac52155d54dd0a1bb4027aae37e01806acf0a6c Mon Sep 17 00:00:00 2001
From: Jeremy Fitzhardinge <jeremy@goop.org>
Date: Fri, 10 Sep 2021 13:28:49 -0700
Subject: [PATCH] subscriber: make `Layer` impls for ` Box<dyn Layer<..>>` 
 `Send+Sync` (#1547)

And for Arc

This is a fixup for https://github.com/tokio-rs/tracing/pull/1536.
---
 tracing-subscriber/src/layer/mod.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tracing-subscriber/src/layer/mod.rs b/tracing-subscriber/src/layer/mod.rs
index 9a98fc5f43..7290d65847 100644
--- a/tracing-subscriber/src/layer/mod.rs
+++ b/tracing-subscriber/src/layer/mod.rs
@@ -1150,7 +1150,7 @@ where
     layer_impl_body! {}
 }
 
-impl<S> Layer<S> for Arc<dyn Layer<S>>
+impl<S> Layer<S> for Arc<dyn Layer<S> + Send + Sync>
 where
     S: Subscriber,
 {
@@ -1165,7 +1165,7 @@ where
     layer_impl_body! {}
 }
 
-impl<S> Layer<S> for Box<dyn Layer<S>>
+impl<S> Layer<S> for Box<dyn Layer<S> + Send + Sync>
 where
     S: Subscriber,
 {