ICE using external Trait Impl with associated default type

[mitaa]

// main.rs
extern crate foo;
use foo::Foo;

fn main() {
    ().bar(5);
}

// foo.rs
pub trait Foo {
    type Input=usize;
    fn bar(&self, _: Self::Input) {}
}

impl Foo for () {}

This causes a ICE:

$ rustc foo.rs --crate-type lib && rustc main.rs --extern foo=libfoo.rlib
main.rs:5:5: 5:14 error: internal compiler error: cat_expr Errd
main.rs:5     ().bar(5);
              ^~~~~~~~~
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports
thread 'rustc' panicked at 'Box<Any>', src/libsyntax\diagnostic.rs:176

If the trait is defined in the same crate it compiles without error.

Meta

$ rustc --version --verbose
rustc 1.3.0-dev (c1b8bd2d6 2015-06-28)
binary: rustc
commit-hash: c1b8bd2d6fd4a00522635112d3f7b28501552a65
commit-date: 2015-06-28
host: x86_64-pc-windows-gnu
release: 1.3.0-dev

Backtrace:

   1:         0x6f47a235 - sys::backtrace::write::h211dbb4bd6be973b5Cs
   2:         0x6f48385c - rt::unwind::register::h4693906be8813b77JAw
   3:         0x6f44570f - rt::unwind::begin_unwind_inner::h814f62215c9372bfSxw
   4:         0x703710fb - diagnostic::SpanHandler::span_bug::h6cdd59c3e6e257dfO4A
   5:         0x703710b3 - diagnostic::SpanHandler::span_bug::h6cdd59c3e6e257dfO4A
   6:          0x23c579a - session::Session::abort_if_errors::h725710f82abb4c311Fs
   7:         0x6d31fb65 - check::check_item_types::h5ff15bd0334d8c5ePGn
   8:         0x6d3d9bf2 - check_crate::hef15b03eccc64e04w0C
   9:         0x616a8b49 - driver::assign_node_ids_and_map::hb8bf19530013da614Da
  10:         0x616a6f94 - driver::assign_node_ids_and_map::hb8bf19530013da614Da
  11:         0x616a1489 - driver::assign_node_ids_and_map::hb8bf19530013da614Da
  12:         0x61682a66 - driver::compile_input::h99144611d4621d8bTba
  13:         0x6176484d - run_compiler::haae1b27de58cc46ew7b
  14:         0x617624d5 - run::h9b75af55a20c8851c7b
  15:         0x61761e19 - run::h9b75af55a20c8851c7b
  16:         0x6f4be5bc - rust_try
  17:         0x6f4be599 - rust_try
  18:         0x6f46d475 - rt::unwind::try::inner_try::ha4237d2b9396aba5Ltw
  19:         0x61761fd7 - run::h9b75af55a20c8851c7b
  20:         0x6f48150e - sys::process::Command::cwd::h505045109e6a418daiv
  21:         0x778259cd - BaseThreadInitThunk