From 93294ea4565d209e43484cf9bb6ddd66bb7007ae Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20K=C3=A5re=20Alsaker?= <john.kare.alsaker@gmail.com>
Date: Mon, 3 Dec 2018 19:07:16 +0100
Subject: [PATCH] Fix

---
 src/librustc_driver/test.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/librustc_driver/test.rs b/src/librustc_driver/test.rs
index b8cd9bda7f02..2b6bb34b146c 100644
--- a/src/librustc_driver/test.rs
+++ b/src/librustc_driver/test.rs
@@ -98,7 +98,7 @@ fn errors(msgs: &[&str]) -> (Box<dyn Emitter + sync::Send>, usize) {
 
 fn test_env<F>(source_string: &str, args: (Box<dyn Emitter + sync::Send>, usize), body: F)
 where
-    F: FnOnce(Env),
+    F: FnOnce(Env) + sync::Send,
 {
     syntax::with_globals(|| {
         let mut options = config::Options::default();