ICE: /checkout/src/librustc/ich/impls_ty.rs:78: TypeIdHasher: unexpected region ReLateBound(DebruijnIndex { depth: 1 }, "BrEnv")

[CraZySacX]

Received the ICE in the title when compilng rsjni

output.txt

This only occurred on the x86_64-unknown-linux-gnu nightly build. I was able to successfully build and test with i686-unknown-linux-gnu and x86_64-pc-windows-msvc nightlies.

Meta

rustc --version --verbose

rustc 1.22.0-nightly (692b94a 2017-10-09)
binary: rustc
commit-hash: 692b94a
commit-date: 2017-10-09
host: x86_64-unknown-linux-gnu
release: 1.22.0-nightly
LLVM version: 4.0

Backtrace:

thread 'rustc' panicked at 'Box<Any>', /checkout/src/librustc_errors/lib.rs:492:8
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
stack backtrace:
   0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace
             at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::_print
             at /checkout/src/libstd/sys_common/backtrace.rs:69
   2: std::panicking::default_hook::{{closure}}
             at /checkout/src/libstd/sys_common/backtrace.rs:58
             at /checkout/src/libstd/panicking.rs:381
   3: std::panicking::default_hook
             at /checkout/src/libstd/panicking.rs:391
   4: std::panicking::rust_panic_with_hook
             at /checkout/src/libstd/panicking.rs:577
   5: std::panicking::begin_panic
   6: rustc_errors::Handler::bug
   7: rustc::session::opt_span_bug_fmt::{{closure}}
   8: rustc::session::opt_span_bug_fmt
   9: rustc::session::bug_fmt
  10: rustc::ich::impls_ty::<impl rustc_data_structures::stable_hasher::HashStable<rustc::ich::hcx::StableHashingContext<'gcx>> for rustc::ty::sty::RegionKind>::hash_stable
  11: rustc::ich::impls_ty::<impl rustc_data_structures::stable_hasher::HashStable<rustc::ich::hcx::StableHashingContext<'gcx>> for rustc::ty::sty::TypeVariants<'gcx>>::hash_stable
  12: rustc::ich::impls_ty::<impl rustc_data_structures::stable_hasher::HashStable<rustc::ich::hcx::StableHashingContext<'gcx>> for rustc::ty::sty::Binder<T>>::hash_stable
  13: rustc::ich::impls_ty::<impl rustc_data_structures::stable_hasher::HashStable<rustc::ich::hcx::StableHashingContext<'gcx>> for rustc::ty::sty::TypeVariants<'gcx>>::hash_stable
  14: <T as rustc::dep_graph::dep_node::DepNodeParams<'a, 'gcx, 'tcx>>::to_fingerprint
  15: rustc::dep_graph::dep_node::DepNode::new
  16: rustc::ty::maps::<impl rustc::ty::maps::queries::is_sized_raw<'tcx>>::try_get
  17: rustc::ty::maps::TyCtxtAt::is_sized_raw
  18: rustc::ty::util::<impl rustc::ty::TyS<'tcx>>::is_sized
  19: rustc_trans::callee::get_fn
  20: rustc_trans::mir::block::<impl rustc_trans::mir::MirContext<'a, 'tcx>>::trans_terminator
  21: rustc_trans::mir::trans_mir
  22: rustc_trans::base::trans_instance
  23: rustc_trans::base::compile_codegen_unit
  24: rustc::ty::maps::<impl rustc::ty::maps::queries::compile_codegen_unit<'tcx>>::force
  25: rustc::ty::maps::<impl rustc::ty::maps::queries::compile_codegen_unit<'tcx>>::try_get
  26: rustc::ty::maps::TyCtxtAt::compile_codegen_unit
  27: rustc::ty::maps::<impl rustc::ty::context::TyCtxt<'a, 'tcx, 'lcx>>::compile_codegen_unit
  28: rustc_trans::base::trans_crate
  29: <rustc_trans::LlvmTransCrate as rustc_trans_utils::trans_crate::TransCrate>::trans_crate
  30: rustc_driver::driver::compile_input::{{closure}}
  31: rustc::ty::context::TyCtxt::create_and_enter
  32: rustc_driver::driver::compile_input
  33: rustc_driver::run_compiler

error: Could not compile `rsjni`.

Caused by:
  process didn't exit successfully: `rustc --crate-name rsjni src/lib.rs --crate-type lib --emit=dep-info,link -C debuginfo=2 --cfg feature="default" --cfg feature="nine" -C metadata=6f62d2c5bbcca5bb -C extra-filename=-6f62d2c5bbcca5bb --out-dir /data/projects/rust-lang/rsjni/target/debug/deps -L dependency=/data/projects/rust-lang/rsjni/target/debug/deps --extern error_chain=/data/projects/rust-lang/rsjni/target/debug/deps/liberror_chain-07f6a9232ac6c576.rlib --extern getset=/data/projects/rust-lang/rsjni/target/debug/deps/libgetset-16d8a528ec0c58f1.so -Zincremental=/data/projects/rust-lang/rsjni/target/debug/incremental -L /opt/java/lib/server -l jvm -L native=/data/projects/rust-lang/rsjni/target/debug/build/backtrace-sys-09fe0c7e20aa4b64/out/.libs` (exit code: 101)

[vorner]

Hello

I'm getting a similar backtrace with my project (gitlab.labs.nic.cz/turris/pakon-aggregator). However, I get it only with CARGO_INCREMENTAL=1, if I set it to 0, the build goes through.

[CraZySacX]

I am also seeing the same behavior. Setting CARGO_INCREMENTAL to 0 causes the ICE to disappear.

[michaelwoerister]

Thanks for the bug report, @CraZySacX!

[alexander-irbis]

The same error for me. I don't know if this is the same bug, but the minimal code to reproduce below

enum Enum { A }

fn fail() {
    let x: Vec<_> = [Enum::A].iter().map(|e| e).collect();
}

[vorner]

I think it is the same one. I definitely have code something like this in the project.

[michaelwoerister]

A fix for this is already in the queue: #45176