ICE: ID not mapped to struct fields

[Valloric]

Testcase:

#![crate_type = "lib"]

enum NodeContents<'a> {
    Children(Vec<Node<'a>>),
}

impl<'a> Drop for NodeContents<'a> {
  fn drop( &mut self ) {
  }
}

struct Node<'a> {
    contents: NodeContents<'a>,
}

impl<'a> Node<'a> {
    fn noName(contents: NodeContents<'a>) -> Node<'a> {
        Node{  contents: contents,}
    }
}

Output:

$ RUST_BACKTRACE=1 rustc testcase.rs
error: internal compiler error: ID not mapped to struct fields: enum NodeContents::NodeContents (id=3)
note: the compiler hit an unexpected failure path. this is a bug.
note: we would appreciate a bug report: http://doc.rust-lang.org/complement-bugreport.html
note: run with `RUST_BACKTRACE=1` for a backtrace
task 'rustc' failed at 'Box<Any>', /home/rustbuild/src/rust-buildbot/slave/nightly-linux/build/src/libsyntax/diagnostic.rs:162

stack backtrace:
   1:     0x7fe491d4fc10 - rt::backtrace::imp::write::h40cc55cec4becf37pft::v0.11.0.pre
   2:     0x7fe491d57340 - failure::on_fail::h0ecf55594c628f4eFAt::v0.11.0.pre
   3:     0x7fe492566ad0 - unwind::begin_unwind_inner::hf89597be9cf9e2a9x2c::v0.11.0.pre
   4:     0x7fe490ed9770 - unwind::begin_unwind::h10083162363633685230::v0.11.0.pre
   5:     0x7fe490eda1b0 - diagnostic::Handler::bug::h539f1511a41eb15bJ3b::v0.11.0.pre
   6:     0x7fe492baf290 - driver::session::Session::bug::h204ed34293d608b6kcp::v0.11.0.pre
   7:     0x7fe492cbdc90 - middle::ty::lookup_struct_fields::hd13a528ec059ba50hAR::v0.11.0.pre
   8:     0x7fe492bfb9d0 - middle::ty::struct_fields::h678b3cb5747c6c6cpFR::v0.11.0.pre
   9:     0x7fe492d51b50 - middle::ty::type_contents::tc_ty::h1e130439e72e14b4lNO::v0.11.0.pre
  10:     0x7fe492cf9d70 - middle::ty::type_contents::h98fb8513fd90fac3hMO::v0.11.0.pre
  11:     0x7fe4930df210 - middle::kind::check_item::he70362b9466f4a05woU::v0.11.0.pre
  12:     0x7fe4930e20a0 - middle::kind::check_crate::hda7416011f252393LeU::v0.11.0.pre
  13:     0x7fe493488b50 - driver::driver::phase_3_run_analysis_passes::he3c22188c33b0ec8Ueo::v0.11.0.pre
  14:     0x7fe493481100 - driver::driver::compile_input::h217e3b79aef46e99l3n::v0.11.0.pre
  15:     0x7fe49354b730 - driver::run_compiler::hecd3afb1f63f45441Iq::v0.11.0.pre
  16:     0x7fe49354b650 - driver::main_args::closure.95283
  17:     0x7fe493565eb0 - driver::monitor::closure.96345
  18:     0x7fe493561150 - task::TaskBuilder::try::closure.96108
  19:     0x7fe4955951b0 - task::spawn_opts::closure.7123
  20:     0x7fe492564080 - task::Task::run::closure.5036
  21:     0x7fe4925cfb50 - rust_try
  22:     0x7fe4925660c0 - unwind::try::h28bca8d7e815c5ffTQc::v0.11.0.pre
  23:     0x7fe492563f00 - task::Task::run::hbd7ae3d03acf3a0bqxc::v0.11.0.pre
  24:     0x7fe495594f50 - task::spawn_opts::closure.7096
  25:     0x7fe491d4f060 - rt::thread::thread_start::h4e5a9307628e87efiAs::v0.11.0.pre
  26:     0x7fe491a860c0 - start_thread
  27:     0x7fe4922372d9 - __clone
  28:                0x0 - <unknown>

Version:

$ rustc --version
rustc 0.11.0-pre-nightly (0ee6a8e 2014-06-09 23:41:53 -0700)
host: x86_64-unknown-linux-gnu

This was originally reported as a comment in #13853 (comment) but appears to be unrelated to that issue.

[ftxqxd]

Reduced test case:

#![crate_type = "lib"]

enum NodeContents<'a> {}

impl<'a> Drop for NodeContents<'a> {
  fn drop(&mut self) {}
}

The ICE disappears if the Drop impl is labelled #[unsafe_destructor].

[alexcrichton]

Closing as a dupe of #13041 (same error message)