ICE generated by linking to crate which is using impl Trait (https://github.com/m4rw3r/rust_parser_experiments/tree/b421e81b0a199eb4ecfb9bb1860b5e1290d80db5) using compiler https://github.com/eddyb/rust/tree/250dc4e5691d68ecb051a1fd11a21cbee8c68fb7

cargo.toml

[package]
name = "test"
version = "0.1.0"
authors = ["Martin Wernstål <m4rw3r@gmail.com>"]

[dependencies.parser]
path = "/Users/m4rw3r/Projects/Self/rust_parser"

main.rs

extern crate parser;

fn main() {
    use parser::{Parser, any};
   
    let p = any();
   
    assert_eq!(p.parse(b"abc").unwrap(), b'a');
    println!("Hello, world!");
}

terminal.txt

➜  test git:(master) RUST_BACKTRACE=1 cargo build
   Compiling test v0.1.0 (file:///Users/m4rw3r/Projects/Self/test)
error: internal compiler error: unexpected panic
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 'lookup_item: id not found: 168', src/librustc/metadata/decoder.rs:99

stack backtrace:
   1:        0x10732d8f5 - sys::backtrace::write::hbde7a04ac5266f40Cxs
   2:        0x1073369fe - panicking::on_panic::hebff0ba18b62efb1kYw
   3:        0x1072f03e2 - rt::unwind::begin_unwind_inner::hda386695be757df8vGw
   4:        0x1072f12bc - rt::unwind::begin_unwind_fmt::h44f59c609a1255fbBFw
   5:        0x10476aeed - metadata::decoder::lookup_item::hc26e1bcb19aeca10wEm
   6:        0x1047b0d85 - metadata::decoder::get_type::ha89a97806cf47c5ff5m
   7:        0x10460dd8f - middle::ty::ctxt<'tcx>::lookup_item_type::h90f776e8ba65170dAUb
   8:        0x104691ee6 - middle::traits::project::AssociatedTypeNormalizer<'a, 'b, 'tcx>.TypeFolder<'tcx>::fold_ty::h4250620a0cd6b0c9qUS
   9:        0x103ccaffb - trans::monomorphize::normalize_associated_type::h9797616998959728155
  10:        0x103de174d - trans::_match::mk_binding_alloca::h5170898935193750522
  11:        0x103ce42e2 - trans::base::init_local::hf7ff2579d8f4cc6epOh
  12:        0x103cf9e41 - trans::controlflow::trans_block::h525efef63d4d59baBWv
  13:        0x103cf8f63 - trans::base::trans_closure::h8ec64c32aed57d2dsDi
  14:        0x103cfa75c - trans::base::trans_fn::h6ef30290ba7abd49fNi
  15:        0x103cfda33 - trans::base::trans_item::h22f6c760e884d5fdqcj
  16:        0x103d0aabb - trans::base::trans_crate::h30b24ebb13c833e0uZj
  17:        0x103b2b09c - driver::phase_4_translate_to_llvm::haff2f7661f8f87dd5Oa
  18:        0x103b254c9 - driver::phase_3_run_analysis_passes::closure.16553
  19:        0x103b1f46c - middle::ty::ctxt<'tcx>::create_and_enter::h6619625694301574285
  20:        0x103b1a546 - driver::phase_3_run_analysis_passes::h5845844168846824478
  21:        0x103b003cc - driver::compile_input::h0bb6f2513be6221fTba
  22:        0x103be4010 - run_compiler::hf51db2af17c318e3A7b
  23:        0x103be1aa0 - boxed::F.FnBox<A>::call_box::h17192164299326116466
  24:        0x103be1317 - rt::unwind::try::try_fn::h12056537783116910705
  25:        0x1073364af - __rust_try_inner
  26:        0x1073364ea - __rust_try
  27:        0x10731fe65 - rt::unwind::try::inner_try::h85467bc95f1212e0oCw
  28:        0x103be1559 - boxed::F.FnBox<A>::call_box::h14521640817662912483
  29:        0x10733548d - sys::thread::Thread::new::thread_start::h3fac1f56d650d810Z0v
  30:     0x7fff900ce059 - _pthread_body
  31:     0x7fff900cdfd6 - _pthread_start

Could not compile `test`.

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