From 45860b53e076f219a56c3ad0fac825bcbce2cca7 Mon Sep 17 00:00:00 2001
From: Jorge Aparicio <japaricious@gmail.com>
Date: Fri, 5 Dec 2014 10:16:53 -0500
Subject: [PATCH] Fix run pass test

---
 src/test/run-pass/backtrace.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/test/run-pass/backtrace.rs b/src/test/run-pass/backtrace.rs
index a267b8dcc86..da5fa19f816 100644
--- a/src/test/run-pass/backtrace.rs
+++ b/src/test/run-pass/backtrace.rs
@@ -10,6 +10,9 @@
 
 // no-pretty-expanded FIXME #15189
 // ignore-windows FIXME #13259
+
+#![feature(unboxed_closures)]
+
 use std::os;
 use std::io::process::Command;
 use std::finally::Finally;
@@ -25,7 +28,7 @@ fn foo() {
 
 #[inline(never)]
 fn double() {
-    (|| {
+    (|&mut:| {
         panic!("once");
     }).finally(|| {
         panic!("twice");