From 92ca4a1f4fd4985d0a1c7101045f7e715c7a6b54 Mon Sep 17 00:00:00 2001
From: David Barsky <me@davidbarsky.com>
Date: Mon, 13 Sep 2021 17:11:04 -0400
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/subscribe.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tracing-subscriber/src/subscribe.rs b/tracing-subscriber/src/subscribe.rs
index 6e4bb21dc0..a195ba6b51 100644
--- a/tracing-subscriber/src/subscribe.rs
+++ b/tracing-subscriber/src/subscribe.rs
@@ -957,7 +957,7 @@ where
     subscriber_impl_body! {}
 }
 
-impl<C> Subscribe<C> for Arc<dyn Subscribe<C>>
+impl<C> Subscribe<C> for Arc<dyn Subscribe<C> + Send + Sync>
 where
     C: Collect,
 {
@@ -972,7 +972,7 @@ where
     subscriber_impl_body! {}
 }
 
-impl<C> Subscribe<C> for Box<dyn Subscribe<C>>
+impl<C> Subscribe<C> for Box<dyn Subscribe<C> + Send + Sync>
 where
     C: Collect,
 {