Move compile-fail tests with NOTE/HELP annotations to UI

src/test/ui/trait-duplicate-methods.rs

@@ -0,0 +1,18 @@
+// 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.
+
+trait Foo {
+    fn orange(&self); //~ NOTE previous definition of the value `orange` here
+    fn orange(&self); //~ ERROR the name `orange` is defined multiple times
+                      //~| NOTE `orange` redefined here
+//~| NOTE `orange` must be defined only once in the value namespace of this trait
+}
+
+fn main() {}