Cannot relate bound region: ReStatic <= ReEarlyBound(360, TypeSpace, 0, 'a)

[RoxasShadow]

I was doing some refactoring on rust-cleverbot and then I encountered the error below. The following one is the diff of the changes I applied in order to get it: https://github.com/RoxasShadow/rust-cleverbot/compare/onoez?expand=1

Meta

rustc --version --verbose:

rustc 1.0.0 (a59de37 2015-05-13) (built 2015-05-14)
binary: rustc
commit-hash: a59de37
commit-date: 2015-05-13
build-date: 2015-05-14
host: x86_64-apple-darwin
release: 1.0.0

Backtrace:

┌[giovanni@Mozes-Air] [/dev/ttys001] [onoez]
└[~/Desktop/rust-cleverbot]> cargo run --example think Ciao! --verbose
Fresh libc v0.1.8
Fresh unicase v0.1.0
Fresh httparse v0.1.2
Fresh bitflags v0.1.1
Fresh lazy_static v0.1.10
Fresh matches v0.1.2
Fresh typeable v0.1.1
Fresh rustc-serialize v0.3.14
Fresh traitobject v0.0.1
Fresh gcc v0.3.5
Fresh pkg-config v0.3.4
Fresh rand v0.3.8
Fresh log v0.3.1
Fresh num_cpus v0.2.6
Fresh url v0.2.34
Fresh mime v0.0.11
Fresh time v0.1.25
Fresh openssl-sys v0.6.2
Fresh rust-crypto v0.2.31
Fresh openssl v0.6.2
Compiling rust-cleverbot v0.0.1 (file:///Users/giovanni/Desktop/rust-cleverbot)
Running rustc src/lib.rs --crate-name cleverbot --crate-type lib -g --out-dir /Users/giovanni/Desktop/rust-cleverbot/target/debug --emit=dep-info,link -L dependency=/Users/giovanni/Desktop/rust-cleverbot/target/debug -L dependency=/Users/giovanni/Desktop/rust-cleverbot/target/debug/deps --extern url=/Users/giovanni/Desktop/rust-cleverbot/target/debug/deps/liburl-beb2c5952735425a.rlib --extern crypto=/Users/giovanni/Desktop/rust-cleverbot/target/debug/deps/libcrypto-67f1ad94f3ffe5f4.rlib --extern hyper=/Users/giovanni/Desktop/rust-cleverbot/target/debug/deps/libhyper-f7b4259bc2dab307.rlib -L native=/usr/lib -L native=/Users/giovanni/Desktop/rust-cleverbot/target/debug/build/openssl-sys-5040130ff99796a0/out -L native=/Users/giovanni/Desktop/rust-cleverbot/target/debug/build/rust-crypto-67f1ad94f3ffe5f4/out -L native=/Users/giovanni/Desktop/rust-cleverbot/target/debug/build/time-e758cbe877e9589d/out
Fresh cookie v0.1.20
Fresh hyper v0.5.1
src/lib.rs:1:1: 1:1 error: internal compiler error: cannot relate bound region: ReStatic <= ReEarlyBound(360, TypeSpace, 0, 'a)
src/lib.rs:1 extern crate url;
^
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', /Users/rustbuild/src/rust-buildbot/slave/stable-dist-rustc-mac/build/src/libsyntax/diagnostic.rs:149
stack backtrace:
1: 0x103a45e7f - sys::backtrace::write::h7807ec07859fb503t1r
2: 0x103a4e4b2 - panicking::on_panic::ha0ed2b9b562a7f9ctZv
3: 0x103a0ae35 - rt::unwind::begin_unwind_inner::hbfb8d99cb52be7a1cHv
4: 0x1031e743e - rt::unwind::begin_unwind::h14482673826369992638
5: 0x1031e73ca - diagnostic::SpanHandler::span_bug::ha80d5103c6dc346fEqB
6: 0x1010acc2b - middle::infer::region_inference::RegionVarBindings<'a, 'tcx>::make_subregion::h424c309cfde0bc8dtiv
7: 0x101063c9b - middle::infer::sub::Sub<'a, 'tcx>.TypeRelation<'a, 'tcx>::regions::h7b6335e10c5e2accAux
8: 0x101063a81 - middle::infer::sub::Sub<'a, 'tcx>.TypeRelation<'a, 'tcx>::relate_with_variance::h14347860495291865360
9: 0x101062ffb - middle::ty_relate::relate_substs::h12261092315780768762
10: 0x1010625ea - middle::ty_relate::relate_item_substs::h10479042000615633136
11: 0x1010c3724 - middle::ty_relate::super_relate_tys::h8062529144464697345
12: 0x10105aea2 - middle::infer::sub::Sub<'a, 'tcx>.TypeRelation<'a, 'tcx>::tys::h39efa003c9af43d1dqx
13: 0x1010c8227 - middle::infer::InferCtxt<'a, 'tcx>::sub_types::h43541a86e23825d8Xjz
14: 0x1006eee35 - check::method::probe::ProbeContext<'a, 'tcx>::consider_candidates::hb77291381a7d8dc300h
15: 0x1006eebd9 - check::method::probe::ProbeContext<'a, 'tcx>::pick_method::ha530aac6fb2586e2XWh
16: 0x1006edfa6 - check::method::probe::ProbeContext<'a, 'tcx>::pick_core::h9d29a0dbf0c8dd7bRRh
17: 0x1006e378c - check::method::probe::probe::closure.31169
18: 0x1006e0e59 - check::method::probe::probe::hc6eba1678c1d154fWGg
19: 0x1006fbb7d - check::method::resolve_ufcs::he4f736b36751a4a2gJj
20: 0x100788280 - check::check_expr_with_unifier::h3772037143783809604
21: 0x10071d25c - check::callee::check_call::h6e64f97ca920f598QTl
22: 0x10076bd51 - check::check_expr_with_unifier::h11298596628612541945
23: 0x100792a7b - check::check_decl_local::hf2bb5e27a41be699hOr
24: 0x10073b1da - check::check_block_with_expected::h1a2a965f24479edbnUr
25: 0x10071c828 - check::check_fn::h4b472c723dc36ca2UGn
26: 0x100736985 - check::check_bare_fn::h87d6505bed3e4c61twn
27: 0x10073f887 - check::check_method_body::h1802c6d6e15675a6Y7n
28: 0x1007348cb - check::CheckItemBodiesVisitor<'a, 'tcx>.Visitor<'tcx>::visit_item::h97ae569543a98538wtn
29: 0x1007fef4a - check_crate::closure.38028
30: 0x1007fa357 - check_crate::h722813c75c795e06XcC
31: 0x1005635f4 - driver::phase_3_run_analysis_passes::h3394cefeecbff846nGa
32: 0x100544ffc - driver::compile_input::hf0607b3d1fd498bcQba
33: 0x10060d5a3 - run_compiler::he7a5311c755081d7z4b
34: 0x10060b0ca - boxed::F.FnBox::call_box::h5234503372052129763
35: 0x10060a567 - rt::unwind::try::try_fn::h4031265711883657142
36: 0x103acf508 - rust_try_inner
37: 0x103acf4f5 - rust_try
38: 0x10060a840 - boxed::F.FnBox::call_box::h1044299548107784679
39: 0x103a4cffd - sys::thread::create::thread_start::ha3be9b31a8775143L4u
40: 0x7fff916a4267 - _pthread_body
41: 0x7fff916a41e4 - _pthread_start
Could not compile rust-cleverbot.
Caused by:
Process didn't exit successfully: rustc src/lib.rs --crate-name cleverbot --crate-type lib -g --out-dir /Users/giovanni/Desktop/rust-cleverbot/target/debug --emit=dep-info,link -L dependency=/Users/giovanni/Desktop/rust-cleverbot/target/debug -L dependency=/Users/giovanni/Desktop/rust-cleverbot/target/debug/deps --extern url=/Users/giovanni/Desktop/rust-cleverbot/target/debug/deps/liburl-beb2c5952735425a.rlib --extern crypto=/Users/giovanni/Desktop/rust-cleverbot/target/debug/deps/libcrypto-67f1ad94f3ffe5f4.rlib --extern hyper=/Users/giovanni/Desktop/rust-cleverbot/target/debug/deps/libhyper-f7b4259bc2dab307.rlib -L native=/usr/lib -L native=/Users/giovanni/Desktop/rust-cleverbot/target/debug/build/openssl-sys-5040130ff99796a0/out -L native=/Users/giovanni/Desktop/rust-cleverbot/target/debug/build/rust-crypto-67f1ad94f3ffe5f4/out -L native=/Users/giovanni/Desktop/rust-cleverbot/target/debug/build/time-e758cbe877e9589d/out (exit code: 101)

[RoxasShadow]

Seems to be a duplicate of #25071. I'm closing this, in the meanwhile I'll check if with the nightly will be fix it.

Edit: Works with the latest nightly.