Add regression test

Author: jseyfried

src/test/compile-fail/issue-32833.rs

@@ -0,0 +1,16 @@
+// Copyright 2016 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.
+
+use bar::Foo; //~ ERROR There is no `Foo` in `bar` [E0432]
+mod bar {
+    use Foo; //~ ERROR There is no `Foo` in the crate root [E0432]
+}
+
+fn main() {}