auto merge of #9295 : alexcrichton/rust/fix-lang-items, r=thestinger

Also add a test to help prevent this from getting out of sync again.

src/test/compile-fail/required-lang-item.rs

@@ -0,0 +1,15 @@
+// Copyright 2013 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.
+
+#[no_std];
+
+// error-pattern:requires `start` lang_item
+
+fn main() {}