diff --git a/src/test/ui/nll/issue-43058.rs b/src/test/ui/nll/issue-43058.rs
index ccea5279e07..91ac7e40042 100644
--- a/src/test/ui/nll/issue-43058.rs
+++ b/src/test/ui/nll/issue-43058.rs
@@ -1,3 +1,15 @@
+// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// must-compile-successfully
+
 #![feature(nll)]
 
 use std::borrow::Cow;
@@ -23,4 +35,4 @@ fn main() {
     v.push(b2);
 
     println!("{:?}", v);
-}
\ No newline at end of file
+}