From 74f00e2f63bc1596eb7e5fe916b68b9e819362bc Mon Sep 17 00:00:00 2001
From: Cameron Taggart <cameron.taggart@gmail.com>
Date: Thu, 7 May 2020 22:30:14 -0600
Subject: [PATCH] #[allow(unused)]

---
 src/librustc_span/lib.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/librustc_span/lib.rs b/src/librustc_span/lib.rs
index 78661cd61a39..1c3bca6608f5 100644
--- a/src/librustc_span/lib.rs
+++ b/src/librustc_span/lib.rs
@@ -15,6 +15,7 @@
 #![feature(specialization)]
 
 // allow wasm target for rustc-ap-rustc_span
+#[allow(unused)]
 extern crate rustc_macros;
 
 use rustc_data_structures::AtomicRef;