[ICE]: `error: internal compiler error: TypeTestError `

[matthiaskrgr]

Code

use std::future::Future;
use std::pin::Pin;
use std::task::{Poll, Context};

struct LocalSet {}
struct RunUntil<'a, F> {
    _local_set: &'a LocalSet,
    _future: F,
}
impl<'a, F> RunUntil<'a, F> {
    fn project<'pin>(self: Pin<&'pin mut Self>) -> Projection<'pin, 'a, F> {
        unimplemented!()
    }
}

struct Projection<'pin, 'a, F>
where
    RunUntil<'a, F>: 'pin,
{
    pub local_set: &'pin mut &'a LocalSet,
    pub future: Pin<&'a mut F>,
}

impl LocalSet {
    fn with<T>(&self, _f: impl FnOnce() -> T) -> T {
        unimplemented!()
    }
}
impl<T: Future> Future for RunUntil<'_, T> {
    type Output = T::Output;
    fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
        let me = self.project();
        me.local_set.with(|| {
            let _ = cx.waker();
            let f = me.future;
            let _ = self.poll(cx);
            Poll::Pending
        })
    }
}

fn main() {}

Affected release channels

• Previous Stable
• Current Stable
• Current Beta
• Current Nightly

Rust Version

rustc 1.69.0-nightly (ef982929c 2023-01-27)
binary: rustc
commit-hash: ef982929c0b653436a6ea6892a2a839fba7c8b57
commit-date: 2023-01-27
host: x86_64-unknown-linux-gnu
release: 1.69.0-nightly
LLVM version: 15.0.7

Current error output

No response

Backtrace

warning: unused variable: `f`
  --> 3e08e5ca509f99c99abb1d26030032936768debc.rs:35:17
   |
35 |             let f = me.future;
   |                 ^ help: if this is intentional, prefix it with an underscore: `_f`
   |
   = note: `#[warn(unused_variables)]` on by default

thread 'rustc' panicked at 'index out of bounds: the len is 1 but the index is 6', /cargo/registry/src/github.com-1ecc6299db9ec823/ena-0.14.0/src/snapshot_vec.rs:199:10
stack backtrace:
   0:     0x7fb1cfd6636a - std::backtrace_rs::backtrace::libunwind::trace::heb3166a6cb1fd02b
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7fb1cfd6636a - std::backtrace_rs::backtrace::trace_unsynchronized::h34837841e045a1d4
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fb1cfd6636a - std::sys_common::backtrace::_print_fmt::h4348a4b63f328ee4
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7fb1cfd6636a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1bad440d01eeeb29
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7fb1cfdc852e - core::fmt::write::hb5a073c651a6cb64
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/core/src/fmt/mod.rs:1232:17
   5:     0x7fb1cfd569b5 - std::io::Write::write_fmt::h97cc768331421fb2
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/io/mod.rs:1682:15
   6:     0x7fb1cfd66135 - std::sys_common::backtrace::_print::h23bd93d6897965f3
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7fb1cfd66135 - std::sys_common::backtrace::print::h4d41ae33ce7a824f
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7fb1cfd68eff - std::panicking::default_hook::{{closure}}::h8ab48635107c713a
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/panicking.rs:267:22
   9:     0x7fb1cfd68c3b - std::panicking::default_hook::h6305ca3c910e41d2
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/panicking.rs:286:9
  10:     0x7fb1d30d5444 - rustc_driver[d1d90693eba3e117]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7fb1cfd6973a - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h60fe4dd8262b5528
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/alloc/src/boxed.rs:2002:9
  12:     0x7fb1cfd6973a - std::panicking::rust_panic_with_hook::ha8dfad8ee636a9a3
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/panicking.rs:692:13
  13:     0x7fb1cfd694b9 - std::panicking::begin_panic_handler::{{closure}}::h4fcf608bbbd27b26
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/panicking.rs:579:13
  14:     0x7fb1cfd6681c - std::sys_common::backtrace::__rust_end_short_backtrace::h86f63ffb2338c5c8
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/sys_common/backtrace.rs:137:18
  15:     0x7fb1cfd691c2 - rust_begin_unwind
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/panicking.rs:575:5
  16:     0x7fb1cfdc4ed3 - core::panicking::panic_fmt::ha12d43373dd0f588
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/core/src/panicking.rs:64:14
  17:     0x7fb1cfdc50c2 - core::panicking::panic_bounds_check::h5d69ae38f9e25022
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/core/src/panicking.rs:159:5
  18:     0x7fb1d10100b7 - <ena[e83628b93913ff8c]::unify::UnificationTable<ena[e83628b93913ff8c]::unify::backing_vec::InPlace<rustc_middle[526e0ca739798ee2]::infer::unify_key::RegionVidKey, &mut alloc[9ea3c9e5c77b7621]::vec::Vec<ena[e83628b93913ff8c]::unify::VarValue<rustc_middle[526e0ca739798ee2]::infer::unify_key::RegionVidKey>>, &mut rustc_infer[a05056d2428e5e85]::infer::undo_log::InferCtxtUndoLogs>>>::uninlined_get_root_key
  19:     0x7fb1d102eae1 - <rustc_middle[526e0ca739798ee2]::ty::sty::Region as rustc_middle[526e0ca739798ee2]::ty::relate::Relate>::relate::<rustc_infer[a05056d2428e5e85]::infer::equate::Equate>
  20:     0x7fb1d102b995 - rustc_middle[526e0ca739798ee2]::ty::relate::super_relate_tys::<rustc_infer[a05056d2428e5e85]::infer::equate::Equate>
  21:     0x7fb1d1028d6e - <rustc_infer[a05056d2428e5e85]::infer::equate::Equate as rustc_middle[526e0ca739798ee2]::ty::relate::TypeRelation>::tys
  22:     0x7fb1d102b472 - rustc_middle[526e0ca739798ee2]::ty::relate::super_relate_tys::<rustc_infer[a05056d2428e5e85]::infer::equate::Equate>
  23:     0x7fb1d1028d6e - <rustc_infer[a05056d2428e5e85]::infer::equate::Equate as rustc_middle[526e0ca739798ee2]::ty::relate::TypeRelation>::tys
  24:     0x7fb1d102b540 - rustc_middle[526e0ca739798ee2]::ty::relate::super_relate_tys::<rustc_infer[a05056d2428e5e85]::infer::equate::Equate>
  25:     0x7fb1d1028d6e - <rustc_infer[a05056d2428e5e85]::infer::equate::Equate as rustc_middle[526e0ca739798ee2]::ty::relate::TypeRelation>::tys
  26:     0x7fb1d2740d13 - <rustc_infer[a05056d2428e5e85]::infer::InferCtxt>::commit_if_ok::<rustc_infer[a05056d2428e5e85]::infer::InferOk<()>, rustc_middle[526e0ca739798ee2]::ty::error::TypeError, <rustc_infer[a05056d2428e5e85]::infer::at::Trace>::eq<rustc_middle[526e0ca739798ee2]::ty::Ty>::{closure#0}>
  27:     0x7fb1d2740c07 - <rustc_infer[a05056d2428e5e85]::infer::at::At>::eq::<rustc_middle[526e0ca739798ee2]::ty::Ty>
  28:     0x7fb1d2e1613d - <rustc_infer[a05056d2428e5e85]::infer::InferCtxt>::can_eq::<rustc_middle[526e0ca739798ee2]::ty::Ty>
  29:     0x7fb1d2e49e68 - <rustc_borrowck[2e52752a89f891f4]::MirBorrowckCtxt>::explain_captures
  30:     0x7fb1d2e38814 - <rustc_borrowck[2e52752a89f891f4]::MirBorrowckCtxt>::report_use_of_moved_or_uninitialized
  31:     0x7fb1d13f332f - <rustc_borrowck[2e52752a89f891f4]::MirBorrowckCtxt as rustc_mir_dataflow[5bfd982c459f1d77]::framework::visitor::ResultsVisitor>::visit_statement_before_primary_effect
  32:     0x7fb1d1fe22c3 - rustc_mir_dataflow[5bfd982c459f1d77]::framework::visitor::visit_results::<rustc_borrowck[2e52752a89f891f4]::dataflow::BorrowckAnalyses<rustc_index[718e423753522017]::bit_set::BitSet<rustc_borrowck[2e52752a89f891f4]::dataflow::BorrowIndex>, rustc_index[718e423753522017]::bit_set::ChunkedBitSet<rustc_mir_dataflow[5bfd982c459f1d77]::move_paths::MovePathIndex>, rustc_index[718e423753522017]::bit_set::ChunkedBitSet<rustc_mir_dataflow[5bfd982c459f1d77]::move_paths::InitIndex>>, rustc_borrowck[2e52752a89f891f4]::dataflow::BorrowckAnalyses<rustc_mir_dataflow[5bfd982c459f1d77]::framework::engine::Results<rustc_borrowck[2e52752a89f891f4]::dataflow::Borrows>, rustc_mir_dataflow[5bfd982c459f1d77]::framework::engine::Results<rustc_mir_dataflow[5bfd982c459f1d77]::impls::MaybeUninitializedPlaces>, rustc_mir_dataflow[5bfd982c459f1d77]::framework::engine::Results<rustc_mir_dataflow[5bfd982c459f1d77]::impls::EverInitializedPlaces>>, core[3a3cbeb512a16fa3]::iter::adapters::map::Map<rustc_middle[526e0ca739798ee2]::mir::traversal::ReversePostorderIter, rustc_borrowck[2e52752a89f891f4]::do_mir_borrowck::{closure#2}>, rustc_borrowck[2e52752a89f891f4]::MirBorrowckCtxt>
  33:     0x7fb1d1fbb727 - rustc_borrowck[2e52752a89f891f4]::do_mir_borrowck
  34:     0x7fb1d1f9df85 - rustc_borrowck[2e52752a89f891f4]::mir_borrowck
  35:     0x7fb1d18b938d - rustc_query_system[decabb1eb79370b7]::query::plumbing::try_execute_query::<rustc_query_impl[ff3c18b748312d2f]::queries::mir_borrowck, rustc_query_impl[ff3c18b748312d2f]::plumbing::QueryCtxt>
  36:     0x7fb1d17265cd - rustc_data_structures[439cdbfa31de989]::sync::par_for_each_in::<&[rustc_span[6b0f4bf036ac788e]::def_id::LocalDefId], <rustc_middle[526e0ca739798ee2]::hir::map::Map>::par_body_owners<rustc_interface[d4b4ad1a0cb81775]::passes::analysis::{closure#2}::{closure#0}>::{closure#0}>
  37:     0x7fb1d17261d3 - <rustc_session[8c42e6c16859134b]::session::Session>::time::<(), rustc_interface[d4b4ad1a0cb81775]::passes::analysis::{closure#2}>
  38:     0x7fb1d17242b7 - rustc_interface[d4b4ad1a0cb81775]::passes::analysis
  39:     0x7fb1d285c88e - rustc_query_system[decabb1eb79370b7]::query::plumbing::try_execute_query::<rustc_query_impl[ff3c18b748312d2f]::queries::analysis, rustc_query_impl[ff3c18b748312d2f]::plumbing::QueryCtxt>
  40:     0x7fb1d2a8664a - <rustc_query_impl[ff3c18b748312d2f]::Queries as rustc_middle[526e0ca739798ee2]::ty::query::QueryEngine>::analysis
  41:     0x7fb1d278fa60 - <rustc_interface[d4b4ad1a0cb81775]::passes::QueryContext>::enter::<rustc_driver[d1d90693eba3e117]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[3a3cbeb512a16fa3]::result::Result<(), rustc_errors[6cf9ff966b0b62fb]::ErrorGuaranteed>>
  42:     0x7fb1d22e1296 - rustc_span[6b0f4bf036ac788e]::with_source_map::<core[3a3cbeb512a16fa3]::result::Result<(), rustc_errors[6cf9ff966b0b62fb]::ErrorGuaranteed>, rustc_interface[d4b4ad1a0cb81775]::interface::run_compiler<core[3a3cbeb512a16fa3]::result::Result<(), rustc_errors[6cf9ff966b0b62fb]::ErrorGuaranteed>, rustc_driver[d1d90693eba3e117]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  43:     0x7fb1d22d9654 - <scoped_tls[6607de7944b4e913]::ScopedKey<rustc_span[6b0f4bf036ac788e]::SessionGlobals>>::set::<rustc_interface[d4b4ad1a0cb81775]::interface::run_compiler<core[3a3cbeb512a16fa3]::result::Result<(), rustc_errors[6cf9ff966b0b62fb]::ErrorGuaranteed>, rustc_driver[d1d90693eba3e117]::run_compiler::{closure#1}>::{closure#0}, core[3a3cbeb512a16fa3]::result::Result<(), rustc_errors[6cf9ff966b0b62fb]::ErrorGuaranteed>>
  44:     0x7fb1d22d8d52 - std[ef0604d174e11cd5]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[d4b4ad1a0cb81775]::util::run_in_thread_pool_with_globals<rustc_interface[d4b4ad1a0cb81775]::interface::run_compiler<core[3a3cbeb512a16fa3]::result::Result<(), rustc_errors[6cf9ff966b0b62fb]::ErrorGuaranteed>, rustc_driver[d1d90693eba3e117]::run_compiler::{closure#1}>::{closure#0}, core[3a3cbeb512a16fa3]::result::Result<(), rustc_errors[6cf9ff966b0b62fb]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[3a3cbeb512a16fa3]::result::Result<(), rustc_errors[6cf9ff966b0b62fb]::ErrorGuaranteed>>
  45:     0x7fb1d22d8afa - <<std[ef0604d174e11cd5]::thread::Builder>::spawn_unchecked_<rustc_interface[d4b4ad1a0cb81775]::util::run_in_thread_pool_with_globals<rustc_interface[d4b4ad1a0cb81775]::interface::run_compiler<core[3a3cbeb512a16fa3]::result::Result<(), rustc_errors[6cf9ff966b0b62fb]::ErrorGuaranteed>, rustc_driver[d1d90693eba3e117]::run_compiler::{closure#1}>::{closure#0}, core[3a3cbeb512a16fa3]::result::Result<(), rustc_errors[6cf9ff966b0b62fb]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[3a3cbeb512a16fa3]::result::Result<(), rustc_errors[6cf9ff966b0b62fb]::ErrorGuaranteed>>::{closure#1} as core[3a3cbeb512a16fa3]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  46:     0x7fb1cfd73803 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h9646bd6a135081c9
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/alloc/src/boxed.rs:1988:9
  47:     0x7fb1cfd73803 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h180d98f11b902552
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/alloc/src/boxed.rs:1988:9
  48:     0x7fb1cfd73803 - std::sys::unix::thread::Thread::new::thread_start::h83489d4028ebb6e1
                               at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/sys/unix/thread.rs:108:17
  49:     0x7fb1cfb048fd - <unknown>
  50:     0x7fb1cfb86d20 - <unknown>
  51:                0x0 - <unknown>

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/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.69.0-nightly (ef982929c 2023-01-27) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [mir_borrowck] borrow-checking `<impl at 3e08e5ca509f99c99abb1d26030032936768debc.rs:29:1: 29:43>::poll`
#1 [analysis] running analysis passes on this crate
end of query stack
warning: 1 warning emitted

error: internal compiler error: no errors encountered even though `delay_span_bug` issued

error: internal compiler error: TypeTestError { type_test: TypeTest { generic_kind: T/#1, lower_bound: '_#6r, span: 3e08e5ca509f99c99abb1d26030032936768debc.rs:32:18: 32:32 (#0), verify_bound: AnyBound([OutlivedBy('_#2r), OutlivedBy('_#5r)]) } }
  |
  = note: delayed at    0: <rustc_errors::HandlerInner>::emit_diagnostic
             1: <rustc_errors::Handler>::delay_span_bug::<rustc_span::span_encoding::Span, alloc::string::String>
             2: <rustc_borrowck::diagnostics::region_errors::RegionErrors>::push::<rustc_borrowck::diagnostics::region_errors::RegionErrorKind>
             3: <rustc_borrowck::region_infer::RegionInferenceContext>::solve
             4: rustc_borrowck::nll::compute_regions
             5: rustc_borrowck::do_mir_borrowck
             6: rustc_borrowck::mir_borrowck
             7: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::mir_borrowck, rustc_query_impl::plumbing::QueryCtxt>
             8: rustc_data_structures::sync::par_for_each_in::<&[rustc_span::def_id::LocalDefId], <rustc_middle::hir::map::Map>::par_body_owners<rustc_interface::passes::analysis::{closure#2}::{closure#0}>::{closure#0}>
             9: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#2}>
            10: rustc_interface::passes::analysis
            11: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::analysis, rustc_query_impl::plumbing::QueryCtxt>
            12: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis
            13: <rustc_interface::passes::QueryContext>::enter::<rustc_driver::run_compiler::{closure#1}::{closure#2}::{closure#3}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
            14: rustc_span::with_source_map::<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
            15: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
            16: std::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
            17: <<std::thread::Builder>::spawn_unchecked_<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
            18: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                       at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/alloc/src/boxed.rs:1988:9
            19: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                       at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/alloc/src/boxed.rs:1988:9
            20: std::sys::unix::thread::Thread::new::thread_start
                       at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/sys/unix/thread.rs:108:17
            21: <unknown>
            22: <unknown>


error: internal compiler error: TypeTestError { type_test: TypeTest { generic_kind: T/#1, lower_bound: '_#25r, span: 3e08e5ca509f99c99abb1d26030032936768debc.rs:33:9: 38:11 (#0), verify_bound: AnyBound([OutlivedBy('_#2r), OutlivedBy('_#5r)]) } }
  |
  = note: delayed at    0: <rustc_errors::HandlerInner>::emit_diagnostic
             1: <rustc_errors::Handler>::delay_span_bug::<rustc_span::span_encoding::Span, alloc::string::String>
             2: <rustc_borrowck::diagnostics::region_errors::RegionErrors>::push::<rustc_borrowck::diagnostics::region_errors::RegionErrorKind>
             3: <rustc_borrowck::region_infer::RegionInferenceContext>::solve
             4: rustc_borrowck::nll::compute_regions
             5: rustc_borrowck::do_mir_borrowck
             6: rustc_borrowck::mir_borrowck
             7: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::mir_borrowck, rustc_query_impl::plumbing::QueryCtxt>
             8: rustc_data_structures::sync::par_for_each_in::<&[rustc_span::def_id::LocalDefId], <rustc_middle::hir::map::Map>::par_body_owners<rustc_interface::passes::analysis::{closure#2}::{closure#0}>::{closure#0}>
             9: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#2}>
            10: rustc_interface::passes::analysis
            11: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::analysis, rustc_query_impl::plumbing::QueryCtxt>
            12: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis
            13: <rustc_interface::passes::QueryContext>::enter::<rustc_driver::run_compiler::{closure#1}::{closure#2}::{closure#3}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
            14: rustc_span::with_source_map::<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
            15: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
            16: std::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
            17: <<std::thread::Builder>::spawn_unchecked_<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
            18: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                       at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/alloc/src/boxed.rs:1988:9
            19: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                       at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/alloc/src/boxed.rs:1988:9
            20: std::sys::unix::thread::Thread::new::thread_start
                       at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/sys/unix/thread.rs:108:17
            21: <unknown>
            22: <unknown>


error: internal compiler error: `compute_regions` tainted `infcx` with errors but did not emit any errors
  --> 3e08e5ca509f99c99abb1d26030032936768debc.rs:31:5
   |
31 | /     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
32 | |         let me = self.project();
33 | |         me.local_set.with(|| {
34 | |             let _ = cx.waker();
...  |
38 | |         })
39 | |     }
   | |_____^
   |
   = note: delayed at    0: <rustc_errors::HandlerInner>::emit_diagnostic
              1: <rustc_errors::Handler>::delay_span_bug::<rustc_span::span_encoding::Span, &str>
              2: rustc_borrowck::nll::compute_regions
              3: rustc_borrowck::do_mir_borrowck
              4: rustc_borrowck::mir_borrowck
              5: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::mir_borrowck, rustc_query_impl::plumbing::QueryCtxt>
              6: rustc_data_structures::sync::par_for_each_in::<&[rustc_span::def_id::LocalDefId], <rustc_middle::hir::map::Map>::par_body_owners<rustc_interface::passes::analysis::{closure#2}::{closure#0}>::{closure#0}>
              7: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#2}>
              8: rustc_interface::passes::analysis
              9: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::analysis, rustc_query_impl::plumbing::QueryCtxt>
             10: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis
             11: <rustc_interface::passes::QueryContext>::enter::<rustc_driver::run_compiler::{closure#1}::{closure#2}::{closure#3}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
             12: rustc_span::with_source_map::<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
             13: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
             14: std::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
             15: <<std::thread::Builder>::spawn_unchecked_<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
             16: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                        at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/alloc/src/boxed.rs:1988:9
             17: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                        at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/alloc/src/boxed.rs:1988:9
             18: std::sys::unix::thread::Thread::new::thread_start
                        at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/sys/unix/thread.rs:108:17
             19: <unknown>
             20: <unknown>


error: internal compiler error: diagnostic buffered but not emitted
  --> 3e08e5ca509f99c99abb1d26030032936768debc.rs:32:18
   |
32 |         let me = self.project();
   |                  ^^^^^^^^^^^^^^
   |
   = note: delayed at    0: <rustc_errors::HandlerInner>::emit_diagnostic
              1: <rustc_errors::Handler>::delay_span_bug::<rustc_error_messages::MultiSpan, &str>
              2: <rustc_borrowck::error::BorrowckErrors>::buffer_error
              3: rustc_borrowck::do_mir_borrowck
              4: rustc_borrowck::mir_borrowck
              5: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::mir_borrowck, rustc_query_impl::plumbing::QueryCtxt>
              6: rustc_data_structures::sync::par_for_each_in::<&[rustc_span::def_id::LocalDefId], <rustc_middle::hir::map::Map>::par_body_owners<rustc_interface::passes::analysis::{closure#2}::{closure#0}>::{closure#0}>
              7: <rustc_session::session::Session>::time::<(), rustc_interface::passes::analysis::{closure#2}>
              8: rustc_interface::passes::analysis
              9: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::queries::analysis, rustc_query_impl::plumbing::QueryCtxt>
             10: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis
             11: <rustc_interface::passes::QueryContext>::enter::<rustc_driver::run_compiler::{closure#1}::{closure#2}::{closure#3}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
             12: rustc_span::with_source_map::<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
             13: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
             14: std::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>
             15: <<std::thread::Builder>::spawn_unchecked_<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
             16: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                        at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/alloc/src/boxed.rs:1988:9
             17: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                        at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/alloc/src/boxed.rs:1988:9
             18: std::sys::unix::thread::Thread::new::thread_start
                        at /rustc/ef982929c0b653436a6ea6892a2a839fba7c8b57/library/std/src/sys/unix/thread.rs:108:17
             19: <unknown>
             20: <unknown>


note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.69.0-nightly (ef982929c 2023-01-27) running on x86_64-unknown-linux-gnu

query stack during panic:
end of query stack
thread panicked while panicking. aborting.
[2]    1819082 IOT instruction (core dumped)  rustc 3e08e5ca509f99c99abb1d26030032936768debc.rs

Anything else?

No response

[compiler-errors]

I think @Nilstrieb fixed this in #107422

[compiler-errors]

Also, the primary error here is:

thread 'rustc' panicked at 'index out of bounds: the len is 1 but the index is 6',

Not

internal compiler error: TypeTestError

That second one is just a delayed ICE that was emitted during the stack unwind of the first ICE.

[langston-barrett]

Were there special flags needed for this? Couldn't reproduce on

rustc 1.70.0-nightly (511364e78 2023-03-16)
binary: rustc
commit-hash: 511364e7874dba9649a264100407e4bffe7b5425
commit-date: 2023-03-16
host: x86_64-unknown-linux-gnu
release: 1.70.0-nightly
LLVM version: 15.0.7

[Noratrieb]

As Matthias mentioned, I fixed this already. I don't think it's worth adding a second test, as this test would probably further minimize to the exact same code.