// 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. #![feature(alloc)] #![allow(unused_extern_crates)] extern crate alloc; mod alloc { //~^ ERROR the name `alloc` is defined multiple times [E0260] pub trait MyTrait { fn do_something(); } } fn main() {}