ICE with the regex crate

[nodakai]

Feel free to close this ticket if the issue was due to my environment.

rustc 1.12.0-dev (3085ec7 2016-07-12)

Nightly from rustup didn't suffer from this issue. (7ad125c 2016-07-11)

$ git clone https://github.com/rust-lang-nursery/regex.git
$ cd regex
$ RUST_BACKTRACE=1 cargo build --verbose
   Compiling utf8-ranges v0.1.3                   
   Compiling libc v0.2.14
   Compiling winapi v0.2.8
   Compiling winapi-build v0.1.1
   Compiling regex-syntax v0.3.4 (file:///tmp/regex/regex-syntax)
     Running `rustc /home/nodakai/.cargo/registry/src/github.com-1ecc6299db9ec823/utf8-ranges-0.1.3/src/lib.rs --crate-name utf8_ranges --crate-type lib -g -C metadata=5c6a6dacba3be7ce -C extra-filename=-5c6a6dacba3be7ce --out-dir /tmp/regex/target/debug/deps --emit=dep-info,link -L dependency=/tmp/regex/target/debug/deps -L dependency=/tmp/regex/target/debug/deps --cap-lints allow`
     Running `rustc /home/nodakai/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.14/src/lib.rs --crate-name libc --crate-type lib -g --cfg feature=\"use_std\" --cfg feature=\"default\" -C metadata=1f3392fe1afd1313 -C extra-filename=-1f3392fe1afd1313 --out-dir /tmp/regex/target/debug/deps --emit=dep-info,link -L dependency=/tmp/regex/target/debug/deps -L dependency=/tmp/regex/target/debug/deps --cap-lints allow`
     Running `rustc /home/nodakai/.cargo/registry/src/github.com-1ecc6299db9ec823/winapi-0.2.8/src/lib.rs --crate-name winapi --crate-type lib -g -C metadata=0889532d327ff4e2 -C extra-filename=-0889532d327ff4e2 --out-dir /tmp/regex/target/debug/deps --emit=dep-info,link -L dependency=/tmp/regex/target/debug/deps -L dependency=/tmp/regex/target/debug/deps --cap-lints allow`
     Running `rustc /home/nodakai/.cargo/registry/src/github.com-1ecc6299db9ec823/winapi-build-0.1.1/src/lib.rs --crate-name build --crate-type lib -g -C metadata=493a7b0628804707 -C extra-filename=-493a7b0628804707 --out-dir /tmp/regex/target/debug/deps --emit=dep-info,link -L dependency=/tmp/regex/target/debug/deps -L dependency=/tmp/regex/target/debug/deps --cap-lints allow`
     Running `rustc regex-syntax/src/lib.rs --crate-name regex_syntax --crate-type lib -g -C metadata=6316a5c3b15f015b -C extra-filename=-6316a5c3b15f015b --out-dir /tmp/regex/target/debug/deps --emit=dep-info,link -L dependency=/tmp/regex/target/debug/deps -L dependency=/tmp/regex/target/debug/deps`
   Compiling kernel32-sys v0.2.2
     Running `rustc /home/nodakai/.cargo/registry/src/github.com-1ecc6299db9ec823/kernel32-sys-0.2.2/build.rs --crate-name build_script_build --crate-type bin -g --out-dir /tmp/regex/target/debug/build/kernel32-sys-d6afa5bd3d7cfaef --emit=dep-info,link -L dependency=/tmp/regex/target/debug/deps -L dependency=/tmp/regex/target/debug/deps --extern build=/tmp/regex/target/debug/deps/libbuild-493a7b0628804707.rlib --cap-lints allow`
     Running `/tmp/regex/target/debug/build/kernel32-sys-d6afa5bd3d7cfaef/build-script-build`
     Running `rustc /home/nodakai/.cargo/registry/src/github.com-1ecc6299db9ec823/kernel32-sys-0.2.2/src/lib.rs --crate-name kernel32 --crate-type lib -g -C metadata=df86a08647459244 -C extra-filename=-df86a08647459244 --out-dir /tmp/regex/target/debug/deps --emit=dep-info,link -L dependency=/tmp/regex/target/debug/deps -L dependency=/tmp/regex/target/debug/deps --extern winapi=/tmp/regex/target/debug/deps/libwinapi-0889532d327ff4e2.rlib --cap-lints allow`
   Compiling thread-id v2.0.0
   Compiling memchr v0.1.11
     Running `rustc /home/nodakai/.cargo/registry/src/github.com-1ecc6299db9ec823/thread-id-2.0.0/src/lib.rs --crate-name thread_id --crate-type lib -g -C metadata=bcd46c79a620a618 -C extra-filename=-bcd46c79a620a618 --out-dir /tmp/regex/target/debug/deps --emit=dep-info,link -L dependency=/tmp/regex/target/debug/deps -L dependency=/tmp/regex/target/debug/deps --extern kernel32=/tmp/regex/target/debug/deps/libkernel32-df86a08647459244.rlib --extern libc=/tmp/regex/target/debug/deps/liblibc-1f3392fe1afd1313.rlib --cap-lints allow`
     Running `rustc /home/nodakai/.cargo/registry/src/github.com-1ecc6299db9ec823/memchr-0.1.11/src/lib.rs --crate-name memchr --crate-type lib -g -C metadata=c555f740a543880f -C extra-filename=-c555f740a543880f --out-dir /tmp/regex/target/debug/deps --emit=dep-info,link -L dependency=/tmp/regex/target/debug/deps -L dependency=/tmp/regex/target/debug/deps --extern libc=/tmp/regex/target/debug/deps/liblibc-1f3392fe1afd1313.rlib --cap-lints allow`
   Compiling thread_local v0.2.6
     Running `rustc /home/nodakai/.cargo/registry/src/github.com-1ecc6299db9ec823/thread_local-0.2.6/src/lib.rs --crate-name thread_local --crate-type lib -g -C metadata=e5ce0d44bcaf00e6 -C extra-filename=-e5ce0d44bcaf00e6 --out-dir /tmp/regex/target/debug/deps --emit=dep-info,link -L dependency=/tmp/regex/target/debug/deps -L dependency=/tmp/regex/target/debug/deps --extern thread_id=/tmp/regex/target/debug/deps/libthread_id-bcd46c79a620a618.rlib --cap-lints allow`
   Compiling aho-corasick v0.5.2
     Running `rustc /home/nodakai/.cargo/registry/src/github.com-1ecc6299db9ec823/aho-corasick-0.5.2/src/lib.rs --crate-name aho_corasick --crate-type lib -g -C metadata=e528bf4fdf3954ff -C extra-filename=-e528bf4fdf3954ff --out-dir /tmp/regex/target/debug/deps --emit=dep-info,link -L dependency=/tmp/regex/target/debug/deps -L dependency=/tmp/regex/target/debug/deps --extern memchr=/tmp/regex/target/debug/deps/libmemchr-c555f740a543880f.rlib --cap-lints allow`
   Compiling regex v0.1.73 (file:///tmp/regex)
     Running `rustc src/lib.rs --crate-name regex --crate-type lib -g --out-dir /tmp/regex/target/debug --emit=dep-info,link -L dependency=/tmp/regex/target/debug -L dependency=/tmp/regex/target/debug/deps --extern aho_corasick=/tmp/regex/target/debug/deps/libaho_corasick-e528bf4fdf3954ff.rlib --extern utf8_ranges=/tmp/regex/target/debug/deps/libutf8_ranges-5c6a6dacba3be7ce.rlib --extern thread_local=/tmp/regex/target/debug/deps/libthread_local-e5ce0d44bcaf00e6.rlib --extern memchr=/tmp/regex/target/debug/deps/libmemchr-c555f740a543880f.rlib --extern regex_syntax=/tmp/regex/target/debug/deps/libregex_syntax-6316a5c3b15f015b.rlib`
error: internal compiler error: src/librustc/infer/region_inference/mod.rs:734: cannot relate bound region: '_#0r <= ReEarlyBound(TypeSpace, 0, 'r)
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
note: run with `RUST_BACKTRACE=1` for a backtrace
thread 'rustc' panicked at 'Box<Any>', src/librustc_errors/lib.rs:580
stack backtrace:
   1:     0x7f5fd5e9477f - std::sys::backtrace::tracing::imp::write::hf504bc08f2a3011f
   2:     0x7f5fd5eabebb - std::panicking::default_hook::_{{closure}}::h49b28af2d05b6140
   3:     0x7f5fd5ea49c7 - std::panicking::default_hook::hf5d79ad4f1ead81e
   4:     0x7f5fd5ea50ec - std::panicking::rust_panic_with_hook::h9a3925e37821d434
   5:     0x7f5fd53ecf58 - std::panicking::begin_panic::hdf32e6f0d48da313
   6:     0x7f5fd5452525 - rustc::session::opt_span_bug_fmt::_{{closure}}::hfbd05ef01f930389
   7:     0x7f5fd54522fd - rustc::ty::context::tls::with_opt::_{{closure}}::hf052d4aa2a56d43a
   8:     0x7f5fd5450b8d - rustc::ty::context::tls::with::_{{closure}}::hb3938faea4e67369
   9:     0x7f5fd240a8d4 - rustc::session::opt_span_bug_fmt::he49e515088fa8437
  10:     0x7f5fd240a7f4 - rustc::session::span_bug_fmt::h40548a94744de842
  11:     0x7f5fd234e22e - rustc::infer::region_inference::RegionVarBindings::make_subregion::hea6d7f7feff509e8
  12:     0x7f5fd234ddbb - rustc::infer::region_inference::RegionVarBindings::make_eqregion::h12e449b6d33201a8
  13:     0x7f5fd232a7a9 - _<rustc..infer..equate..Equate<'a, 'gcx, 'tcx> as rustc..ty..relate..TypeRelation<'a, 'gcx, 'tcx>>::regions::hb8d7946cee89a361
  14:     0x7f5fd22788f2 - _<&'a mut I as core..iter..iterator..Iterator>::next::h40c39ed3041b027d
  15:     0x7f5fd2469f00 - rustc::ty::relate::relate_substs::ha20cc22e09ccff78
  16:     0x7f5fd24653c6 - rustc::ty::relate::relate_item_substs::hf669fec513c5c374
  17:     0x7f5fd2328a9b - _<rustc..infer..equate..Equate<'a, 'gcx, 'tcx> as rustc..ty..relate..TypeRelation<'a, 'gcx, 'tcx>>::tys::he042e4faca40a521
  18:     0x7f5fd24d390f - rustc::ty::relate::relate_type_params::_{{closure}}::h27ac1d6284ceaedc
  19:     0x7f5fd246977a - rustc::ty::relate::relate_substs::ha20cc22e09ccff78
  20:     0x7f5fd24653c6 - rustc::ty::relate::relate_item_substs::hf669fec513c5c374
  21:     0x7f5fd246f749 - _<rustc..ty..sty..TraitRef<'tcx> as rustc..ty..relate..Relate<'tcx>>::relate::h986b72a0959563fb
  22:     0x7f5fd2505851 - rustc::infer::InferCtxt::eq_trait_refs::_{{closure}}::h66412c5d53af9fe3
  23:     0x7f5fd23695c2 - rustc::infer::InferCtxt::eq_trait_refs::h1a047bc0d7cb9287
  24:     0x7f5fd243846d - rustc::traits::select::SelectionContext::match_impl::hc59fa4b835fb8273
  25:     0x7f5fd2518375 - rustc::traits::select::SelectionContext::assemble_candidates_from_impls::_{{closure}}::_{{closure}}::h477fb8af4d02a8d4
  26:     0x7f5fd2477760 - rustc::ty::trait_def::TraitDef::for_each_relevant_impl::h48255f01a2713db2
  27:     0x7f5fd24304d6 - rustc::traits::select::SelectionContext::assemble_candidates::h5d6c8f4149f33306
  28:     0x7f5fd242e20a - rustc::traits::select::SelectionContext::candidate_from_obligation::h57e2e1988c8b0c1d
  29:     0x7f5fd242c216 - rustc::traits::select::SelectionContext::select::hb8e03770ff77bdb9
  30:     0x7f5fd2507072 - rustc::traits::project::assemble_candidates_from_impls::_{{closure}}::h3bceaaae4cf282ac
  31:     0x7f5fd2424774 - rustc::traits::project::opt_normalize_projection_type::hb3e854cc28a2d57e
  32:     0x7f5fd2423441 - rustc::traits::project::normalize_projection_type::he1f9e46d61d58258
  33:     0x7f5fd2422bec - _<rustc..traits..project..AssociatedTypeNormalizer<'a, 'b, 'gcx, 'tcx> as rustc..ty..fold..TypeFolder<'gcx, 'tcx>>::fold_ty::h15923c441f55c226
  34:     0x7f5fd2422e74 - _<rustc..traits..project..AssociatedTypeNormalizer<'a, 'b, 'gcx, 'tcx> as rustc..ty..fold..TypeFolder<'gcx, 'tcx>>::fold_ty::h15923c441f55c226
  35:     0x7f5fd2422413 - rustc::traits::project::normalize_with_depth::hb7f7e51a4e47f9d6
  36:     0x7f5fd245be6e - rustc::ty::layout::normalize_associated_type::hb00ed9155d9e3b1b
  37:     0x7f5fd245ce26 - rustc::ty::layout::Layout::compute_uncached::hd0d122453c9f7281
  38:     0x7f5fd2480fb7 - rustc::ty::util::_<impl rustc..ty..TyS<'tcx>>::layout::ha131ccfdd57ad834
  39:     0x7f5fd245ce3e - rustc::ty::layout::Layout::compute_uncached::hd0d122453c9f7281
  40:     0x7f5fd2480fb7 - rustc::ty::util::_<impl rustc..ty..TyS<'tcx>>::layout::ha131ccfdd57ad834
  41:     0x7f5fd245eed8 - rustc::ty::layout::Layout::compute_uncached::hd0d122453c9f7281
  42:     0x7f5fd4813cb6 - _<rustc_lint..types..VariantSizeDifferences as rustc..lint..LateLintPass>::check_item::_{{closure}}::h3b1717a1203e5bc6
  43:     0x7f5fd48115b3 - rustc::infer::InferCtxtBuilder::enter::_{{closure}}::h53c4b8b89c93e797
  44:     0x7f5fd480d2db - _<rustc_lint..types..VariantSizeDifferences as rustc..lint..LateLintPass>::check_item::ha61bf20498c6f8a4
  45:     0x7f5fd250a3df - _<rustc..lint..context..LateContext<'a, 'tcx> as rustc..hir..intravisit..Visitor<'v>>::visit_item::_{{closure}}::h2802a30b44885b0e
  46:     0x7f5fd2386fdc - _<rustc..lint..context..LateContext<'a, 'tcx> as rustc..hir..intravisit..Visitor<'v>>::visit_item::hc8793eddc36b5a93
  47:     0x7f5fd23891ab - _<rustc..lint..context..LateContext<'a, 'tcx> as rustc..hir..intravisit..Visitor<'v>>::visit_mod::h545bb6c839c10530
  48:     0x7f5fd250a654 - _<rustc..lint..context..LateContext<'a, 'tcx> as rustc..hir..intravisit..Visitor<'v>>::visit_item::_{{closure}}::h2802a30b44885b0e
  49:     0x7f5fd2386fdc - _<rustc..lint..context..LateContext<'a, 'tcx> as rustc..hir..intravisit..Visitor<'v>>::visit_item::hc8793eddc36b5a93
  50:     0x7f5fd23891ab - _<rustc..lint..context..LateContext<'a, 'tcx> as rustc..hir..intravisit..Visitor<'v>>::visit_mod::h545bb6c839c10530
  51:     0x7f5fd2509ece - rustc::lint::context::check_crate::_{{closure}}::h7bd599bdee209a50
  52:     0x7f5fd239064d - rustc::lint::context::check_crate::hc8fbee831bb2bd7c
  53:     0x7f5fd64df268 - rustc_driver::driver::phase_3_run_analysis_passes::_{{closure}}::he1de538a7584312e
  54:     0x7f5fd64d4182 - rustc::ty::context::tls::enter_global::_{{closure}}::h8575bf8dd37062fa
  55:     0x7f5fd6435694 - rustc::ty::context::TyCtxt::create_and_enter::he5466411552b055e
  56:     0x7f5fd648f16b - rustc_driver::driver::compile_input::h2d1b58b831f06a86
  57:     0x7f5fd64b5484 - rustc_driver::run_compiler::h833483649bdaa9c3
  58:     0x7f5fd652b4c7 - rustc_driver::run::_{{closure}}::hf976882a071eba86
  59:     0x7f5fd65262fb - rustc_driver::monitor::_{{closure}}::hd347b359cf4c5640
  60:     0x7f5fd640afed - std::panicking::try::call::hd16aacc09eeeaf9e
  61:     0x7f5fd5eb9d8b - __rust_try
  62:     0x7f5fd5eb9c6e - __rust_maybe_catch_panic
  63:     0x7f5fd64d178d - std::thread::Builder::spawn::_{{closure}}::hf8ba3712412ac8f6
  64:     0x7f5fd6424cfe - _<F as alloc..boxed..FnBox<A>>::call_box::hbf614b3f826456b6
  65:     0x7f5fd5ea2914 - std::sys::thread::Thread::new::thread_start::h2e98425c7fffa990
  66:     0x7f5fcdf93463 - start_thread
  67:     0x7f5fd5ad8e5c - clone
  68:                0x0 - <unknown>

error: Could not compile `regex`.

Caused by:
  Process didn't exit successfully: `rustc src/lib.rs --crate-name regex --crate-type lib -g --out-dir /tmp/regex/target/debug --emit=dep-info,link -L dependency=/tmp/regex/target/debug -L dependency=/tmp/regex/target/debug/deps --extern aho_corasick=/tmp/regex/target/debug/deps/libaho_corasick-e528bf4fdf3954ff.rlib --extern utf8_ranges=/tmp/regex/target/debug/deps/libutf8_ranges-5c6a6dacba3be7ce.rlib --extern thread_local=/tmp/regex/target/debug/deps/libthread_local-e5ce0d44bcaf00e6.rlib --extern memchr=/tmp/regex/target/debug/deps/libmemchr-c555f740a543880f.rlib --extern regex_syntax=/tmp/regex/target/debug/deps/libregex_syntax-6316a5c3b15f015b.rlib` (exit code: 101)

[nodakai]

Lost the competition by 4 hours... Dupe of #34780 (I thought it didn't show up in the search...??)