Conflicting type alias is reported as conflicting submodule

[bvssvni]

Playpen http://is.gd/YTFOov

use std::ops::Add;

type Add = Add;

fn main() {
}

<anon>:1:5: 1:18 error: import `Add` conflicts with existing submodule [E0256]
<anon>:1 use std::ops::Add;
             ^~~~~~~~~~~~~