ICE: impl declared before trait with associated item

[nrc]

#![feature(associated_types)]

impl Foo for int {
    type A = uint;
}

pub trait Foo {
    type A;
}

pub fn main() {}

task 'rustc' panicked at 'No def'n found for DefId { krate: 0, node: 13 } in tcx.impl_or_trait_items', /home/ncameron/rust/src/librustc/middle/ty.rs:4310

stack backtrace:
   1:     0x7f1940943440 - rt::backtrace::imp::write::h0f67e562de667d35Gay
   2:     0x7f19409478b0 - failure::on_fail::h58a0ff7a5099a6000Cy
   3:     0x7f19405fec80 - unwind::begin_unwind_inner::ha57e93b5d4f1f80d1Qc
   4:     0x7f19405fe7e0 - unwind::begin_unwind_fmt::ha9fc4b78efd146fccOc
   5:     0x7f193f4ead30 - middle::ty::impl_or_trait_item::h55c274f1e1ee9b78Xl8
   6:     0x7f193f95cc40 - middle::typeck::collect::ImplCtxt<'a, 'tcx>.AstConv<'tcx>::associated_type_binding::hcc097ca1cd60b433DCK
   7:     0x7f193f994750 - middle::typeck::astconv::create_substs_for_ast_path::h12687352172379627279
   8:     0x7f193f87e830 - middle::typeck::collect::convert::h51f7fcfe7a681561cXK
   9:     0x7f193f878890 - middle::typeck::collect::collect_item_types::hf182a64ac9f0ea5eORJ
  10:     0x7f193f751d10 - util::common::time::h13554638601947919603
  11:     0x7f193f751310 - middle::typeck::check_crate::h9b48aa6c28528690bQP
  12:     0x7f1940f43120 - driver::driver::phase_3_run_analysis_passes::h938db519a111a7574nS
  13:     0x7f1940f3c410 - driver::driver::compile_input::h282769b6ecf9b18b44R
  14:     0x7f1940fb9260 - driver::run::closure.61472
  15:     0x7f1940fc6290 - task::TaskBuilder::try_future::closure.62104
  16:     0x7f194093a910 - task::TaskBuilder::spawn_internal::closure.31177
  17:     0x7f1940600b90 - task::Task::spawn::closure.5779
  18:     0x7f194065b090 - rust_try_inner
  19:     0x7f194065b080 - rust_try
  20:     0x7f19405fe540 - unwind::try::heee2f446c60ea967mFc
  21:     0x7f1940600a40 - task::Task::run::h7f1d4c2e55b46abdeOb
  22:     0x7f1940600810 - task::Task::spawn::closure.5755
  23:     0x7f1940604350 - thread::thread_start::hc7adf40c9d3bfc57h6b
  24:     0x7f193b83a0c0 - start_thread
  25:     0x7f19402bef89 - __clone
  26:                0x0 - <unknown>

[japaric]

Duplicate of #18611 ?

[nrc]

Yes, closing as dup