From 2439bbe48df4fd5982c2d2903d969e71156ba653 Mon Sep 17 00:00:00 2001
From: Nick Cameron <ncameron@mozilla.com>
Date: Thu, 6 Oct 2016 11:36:36 +1300
Subject: [PATCH] Stabilise `?`

cc [`?` tracking issue](https://github.com/rust-lang/rust/issues/31436)
---
 lib.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib.rs b/lib.rs
index 74cc498..95c46ec 100644
--- a/lib.rs
+++ b/lib.rs
@@ -295,7 +295,7 @@
 #![cfg_attr(not(stage0), deny(warnings))]
 
 #![feature(str_escape)]
-#![feature(question_mark)]
+#![cfg_attr(stage0, feature(question_mark))]
 
 use self::LabelText::*;