ice: `continue to unknown label` async fn / `assertion failed: ln.index() < self.live_nodes`

[matthiaskrgr]

Code

async fn f999() -> Vec<usize> {
    'b: {
        continue 'b; 
    }
}

Meta

rustc --version --verbose:

rustc 1.72.0-nightly (5bd28f5ea 2023-06-28)
binary: rustc
commit-hash: 5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0
commit-date: 2023-06-28
host: x86_64-unknown-linux-gnu
release: 1.72.0-nightly
LLVM version: 16.0.5

Error output

Backtrace

error[E0696]: `continue` pointing to a labeled block
 --> treereduce.out:3:9
  |
2 | /     'b: {
3 | |         continue 'b;
  | |         ^^^^^^^^^^^ labeled blocks cannot be `continue`'d
4 | |     }
  | |_____- labeled block the `continue` points to

error: internal compiler error: compiler/rustc_passes/src/liveness.rs:1004:40: continue to unknown label
 --> treereduce.out:3:9
  |
3 |         continue 'b;
  |         ^^^^^^^^^^^

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/compiler/rustc_errors/src/lib.rs:994:33
stack backtrace:
   0:     0x7f3825827e31 - std::backtrace_rs::backtrace::libunwind::trace::h8bc3e596fd6e6181
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f3825827e31 - std::backtrace_rs::backtrace::trace_unsynchronized::h9a0656fedca2f962
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f3825827e31 - std::sys_common::backtrace::_print_fmt::h11ca79bc953fda0e
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f3825827e31 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h23585af82c540d61
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f38258895df - core::fmt::rt::Argument::fmt::h1e7f4bcecbee3fbb
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/core/src/fmt/rt.rs:138:9
   5:     0x7f38258895df - core::fmt::write::h41633f265152b738
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/core/src/fmt/mod.rs:1094:21
   6:     0x7f382581a967 - std::io::Write::write_fmt::hdf9fdeebf4391d4c
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/std/src/io/mod.rs:1714:15
   7:     0x7f3825827c45 - std::sys_common::backtrace::_print::h0761f433dadea582
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f3825827c45 - std::sys_common::backtrace::print::hffcd468cc9baf957
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f382582a9f3 - std::panicking::default_hook::{{closure}}::h70eb212f41458c90
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/std/src/panicking.rs:269:22
  10:     0x7f382582a784 - std::panicking::default_hook::hf217f8886a1385fc
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/std/src/panicking.rs:288:9
  11:     0x7f382462217b - <rustc_driver_impl[ea51492c730803db]::install_ice_hook::{closure#0} as core[6e72eb595340d7ba]::ops::function::FnOnce<(&core[6e72eb595340d7ba]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
  12:     0x7f382582b21e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hdf84d12f536c7065
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/alloc/src/boxed.rs:2024:9
  13:     0x7f382582b21e - std::panicking::rust_panic_with_hook::h7901b0073bb3ed74
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/std/src/panicking.rs:709:13
  14:     0x7f3824e61d81 - std[4a840e81aae3439]::panicking::begin_panic::<rustc_errors[74566eb9727f9d9c]::ExplicitBug>::{closure#0}
  15:     0x7f3824e60b66 - std[4a840e81aae3439]::sys_common::backtrace::__rust_end_short_backtrace::<std[4a840e81aae3439]::panicking::begin_panic<rustc_errors[74566eb9727f9d9c]::ExplicitBug>::{closure#0}, !>
  16:     0x7f3824e9d086 - std[4a840e81aae3439]::panicking::begin_panic::<rustc_errors[74566eb9727f9d9c]::ExplicitBug>
  17:     0x7f3824ea3872 - <rustc_errors[74566eb9727f9d9c]::HandlerInner>::span_bug::<rustc_span[624dabdd61f2978b]::span_encoding::Span, alloc[6fd48550c51b5745]::string::String>
  18:     0x7f3824ea3636 - <rustc_errors[74566eb9727f9d9c]::Handler>::span_bug::<rustc_span[624dabdd61f2978b]::span_encoding::Span, alloc[6fd48550c51b5745]::string::String>
  19:     0x7f3824e61eed - rustc_middle[9f74ec5cb00a905a]::util::bug::opt_span_bug_fmt::<rustc_span[624dabdd61f2978b]::span_encoding::Span>::{closure#0}
  20:     0x7f3824e61f1a - rustc_middle[9f74ec5cb00a905a]::ty::context::tls::with_opt::<rustc_middle[9f74ec5cb00a905a]::util::bug::opt_span_bug_fmt<rustc_span[624dabdd61f2978b]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  21:     0x7f3824e60bda - rustc_middle[9f74ec5cb00a905a]::ty::context::tls::with_context_opt::<rustc_middle[9f74ec5cb00a905a]::ty::context::tls::with_opt<rustc_middle[9f74ec5cb00a905a]::util::bug::opt_span_bug_fmt<rustc_span[624dabdd61f2978b]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  22:     0x7f382273be84 - rustc_middle[9f74ec5cb00a905a]::util::bug::span_bug_fmt::<rustc_span[624dabdd61f2978b]::span_encoding::Span>
  23:     0x7f382273be4b - <rustc_passes[108f699eb48b456]::liveness::Liveness>::propagate_through_expr
  24:     0x7f382273bef8 - <rustc_passes[108f699eb48b456]::liveness::Liveness>::propagate_through_block
  25:     0x7f382273bec3 - <rustc_passes[108f699eb48b456]::liveness::Liveness>::propagate_through_block
  26:     0x7f382273bec3 - <rustc_passes[108f699eb48b456]::liveness::Liveness>::propagate_through_block
  27:     0x7f3823b36e84 - rustc_passes[108f699eb48b456]::liveness::check_liveness
  28:     0x7f38225fc04c - rustc_query_impl[a5bf74a69bd3660]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a5bf74a69bd3660]::query_impl::check_liveness::dynamic_query::{closure#2}::{closure#0}, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 0usize]>>
  29:     0x7f3822c9ca2c - rustc_query_system[d65e888f3fe19f8d]::query::plumbing::try_execute_query::<rustc_query_impl[a5bf74a69bd3660]::DynamicConfig<rustc_query_system[d65e888f3fe19f8d]::query::caches::VecCache<rustc_span[624dabdd61f2978b]::def_id::LocalDefId, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[a5bf74a69bd3660]::plumbing::QueryCtxt, false>
  30:     0x7f3822c9c764 - rustc_query_impl[a5bf74a69bd3660]::query_impl::check_liveness::get_query_non_incr::__rust_end_short_backtrace
  31:     0x7f38234dc128 - rustc_mir_build[482a4e67a72838c0]::build::mir_built
  32:     0x7f382263fcbc - rustc_query_impl[a5bf74a69bd3660]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a5bf74a69bd3660]::query_impl::mir_built::dynamic_query::{closure#2}::{closure#0}, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 8usize]>>
  33:     0x7f382263fc9e - <rustc_query_impl[a5bf74a69bd3660]::query_impl::mir_built::dynamic_query::{closure#2} as core[6e72eb595340d7ba]::ops::function::FnOnce<(rustc_middle[9f74ec5cb00a905a]::ty::context::TyCtxt, rustc_span[624dabdd61f2978b]::def_id::LocalDefId)>>::call_once
  34:     0x7f382272891d - rustc_query_system[d65e888f3fe19f8d]::query::plumbing::try_execute_query::<rustc_query_impl[a5bf74a69bd3660]::DynamicConfig<rustc_query_system[d65e888f3fe19f8d]::query::caches::VecCache<rustc_span[624dabdd61f2978b]::def_id::LocalDefId, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[a5bf74a69bd3660]::plumbing::QueryCtxt, false>
  35:     0x7f3823fa7621 - rustc_query_impl[a5bf74a69bd3660]::query_impl::mir_built::get_query_non_incr::__rust_end_short_backtrace
  36:     0x7f38237333ec - rustc_mir_transform[3a72d7fd4a713ad]::check_unsafety::unsafety_check_result
  37:     0x7f382263fcfc - rustc_query_impl[a5bf74a69bd3660]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a5bf74a69bd3660]::query_impl::unsafety_check_result::dynamic_query::{closure#2}::{closure#0}, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 8usize]>>
  38:     0x7f382263fcde - <rustc_query_impl[a5bf74a69bd3660]::query_impl::unsafety_check_result::dynamic_query::{closure#2} as core[6e72eb595340d7ba]::ops::function::FnOnce<(rustc_middle[9f74ec5cb00a905a]::ty::context::TyCtxt, rustc_span[624dabdd61f2978b]::def_id::LocalDefId)>>::call_once
  39:     0x7f382272891d - rustc_query_system[d65e888f3fe19f8d]::query::plumbing::try_execute_query::<rustc_query_impl[a5bf74a69bd3660]::DynamicConfig<rustc_query_system[d65e888f3fe19f8d]::query::caches::VecCache<rustc_span[624dabdd61f2978b]::def_id::LocalDefId, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[a5bf74a69bd3660]::plumbing::QueryCtxt, false>
  40:     0x7f3823f9ee61 - rustc_query_impl[a5bf74a69bd3660]::query_impl::unsafety_check_result::get_query_non_incr::__rust_end_short_backtrace
  41:     0x7f38237368c8 - rustc_mir_transform[3a72d7fd4a713ad]::check_unsafety::unsafety_check_result
  42:     0x7f382263fcfc - rustc_query_impl[a5bf74a69bd3660]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a5bf74a69bd3660]::query_impl::unsafety_check_result::dynamic_query::{closure#2}::{closure#0}, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 8usize]>>
  43:     0x7f382263fcde - <rustc_query_impl[a5bf74a69bd3660]::query_impl::unsafety_check_result::dynamic_query::{closure#2} as core[6e72eb595340d7ba]::ops::function::FnOnce<(rustc_middle[9f74ec5cb00a905a]::ty::context::TyCtxt, rustc_span[624dabdd61f2978b]::def_id::LocalDefId)>>::call_once
  44:     0x7f382272891d - rustc_query_system[d65e888f3fe19f8d]::query::plumbing::try_execute_query::<rustc_query_impl[a5bf74a69bd3660]::DynamicConfig<rustc_query_system[d65e888f3fe19f8d]::query::caches::VecCache<rustc_span[624dabdd61f2978b]::def_id::LocalDefId, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[a5bf74a69bd3660]::plumbing::QueryCtxt, false>
  45:     0x7f3823f9ee61 - rustc_query_impl[a5bf74a69bd3660]::query_impl::unsafety_check_result::get_query_non_incr::__rust_end_short_backtrace
  46:     0x7f382399f3f4 - rustc_mir_transform[3a72d7fd4a713ad]::mir_const
  47:     0x7f3822653abe - rustc_query_impl[a5bf74a69bd3660]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a5bf74a69bd3660]::query_impl::mir_const::dynamic_query::{closure#2}::{closure#0}, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 8usize]>>
  48:     0x7f3822653a8e - <rustc_query_impl[a5bf74a69bd3660]::query_impl::mir_const::dynamic_query::{closure#2} as core[6e72eb595340d7ba]::ops::function::FnOnce<(rustc_middle[9f74ec5cb00a905a]::ty::context::TyCtxt, rustc_span[624dabdd61f2978b]::def_id::LocalDefId)>>::call_once
  49:     0x7f382272891d - rustc_query_system[d65e888f3fe19f8d]::query::plumbing::try_execute_query::<rustc_query_impl[a5bf74a69bd3660]::DynamicConfig<rustc_query_system[d65e888f3fe19f8d]::query::caches::VecCache<rustc_span[624dabdd61f2978b]::def_id::LocalDefId, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[a5bf74a69bd3660]::plumbing::QueryCtxt, false>
  50:     0x7f3823f967f1 - rustc_query_impl[a5bf74a69bd3660]::query_impl::mir_const::get_query_non_incr::__rust_end_short_backtrace
  51:     0x7f382286596d - rustc_mir_transform[3a72d7fd4a713ad]::mir_promoted
  52:     0x7f382263fd51 - rustc_query_impl[a5bf74a69bd3660]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a5bf74a69bd3660]::query_impl::mir_promoted::dynamic_query::{closure#2}::{closure#0}, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 16usize]>>
  53:     0x7f3822f62b6a - rustc_query_system[d65e888f3fe19f8d]::query::plumbing::try_execute_query::<rustc_query_impl[a5bf74a69bd3660]::DynamicConfig<rustc_query_system[d65e888f3fe19f8d]::query::caches::VecCache<rustc_span[624dabdd61f2978b]::def_id::LocalDefId, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[a5bf74a69bd3660]::plumbing::QueryCtxt, false>
  54:     0x7f3822f62857 - rustc_query_impl[a5bf74a69bd3660]::query_impl::mir_promoted::get_query_non_incr::__rust_end_short_backtrace
  55:     0x7f382350310c - rustc_borrowck[4c1300aba514ead]::mir_borrowck
  56:     0x7f3822653a5e - rustc_query_impl[a5bf74a69bd3660]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a5bf74a69bd3660]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 8usize]>>
  57:     0x7f3822653a2e - <rustc_query_impl[a5bf74a69bd3660]::query_impl::mir_borrowck::dynamic_query::{closure#2} as core[6e72eb595340d7ba]::ops::function::FnOnce<(rustc_middle[9f74ec5cb00a905a]::ty::context::TyCtxt, rustc_span[624dabdd61f2978b]::def_id::LocalDefId)>>::call_once
  58:     0x7f382272891d - rustc_query_system[d65e888f3fe19f8d]::query::plumbing::try_execute_query::<rustc_query_impl[a5bf74a69bd3660]::DynamicConfig<rustc_query_system[d65e888f3fe19f8d]::query::caches::VecCache<rustc_span[624dabdd61f2978b]::def_id::LocalDefId, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[a5bf74a69bd3660]::plumbing::QueryCtxt, false>
  59:     0x7f3823faa841 - rustc_query_impl[a5bf74a69bd3660]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
  60:     0x7f38237c6bc5 - rustc_hir_analysis[5549e2304bca0734]::collect::type_of::opaque::find_opaque_ty_constraints_for_rpit
  61:     0x7f38237c37dc - rustc_hir_analysis[5549e2304bca0734]::collect::type_of::type_of
  62:     0x7f382274bf53 - rustc_query_impl[a5bf74a69bd3660]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a5bf74a69bd3660]::query_impl::type_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 8usize]>>
  63:     0x7f382274bf10 - <rustc_query_impl[a5bf74a69bd3660]::query_impl::type_of::dynamic_query::{closure#2} as core[6e72eb595340d7ba]::ops::function::FnOnce<(rustc_middle[9f74ec5cb00a905a]::ty::context::TyCtxt, rustc_span[624dabdd61f2978b]::def_id::DefId)>>::call_once
  64:     0x7f3822650015 - rustc_query_system[d65e888f3fe19f8d]::query::plumbing::try_execute_query::<rustc_query_impl[a5bf74a69bd3660]::DynamicConfig<rustc_query_system[d65e888f3fe19f8d]::query::caches::DefaultCache<rustc_span[624dabdd61f2978b]::def_id::DefId, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[a5bf74a69bd3660]::plumbing::QueryCtxt, false>
  65:     0x7f3823f961f3 - rustc_query_impl[a5bf74a69bd3660]::query_impl::type_of::get_query_non_incr::__rust_end_short_backtrace
  66:     0x7f3823496796 - rustc_middle[9f74ec5cb00a905a]::query::plumbing::query_get_at::<rustc_query_system[d65e888f3fe19f8d]::query::caches::DefaultCache<rustc_span[624dabdd61f2978b]::def_id::DefId, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 8usize]>>>
  67:     0x7f382349076c - rustc_hir_analysis[5549e2304bca0734]::check::check::check_mod_item_types
  68:     0x7f382321a71c - rustc_query_impl[a5bf74a69bd3660]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a5bf74a69bd3660]::query_impl::check_mod_item_types::dynamic_query::{closure#2}::{closure#0}, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 0usize]>>
  69:     0x7f382321a6fe - <rustc_query_impl[a5bf74a69bd3660]::query_impl::check_mod_item_types::dynamic_query::{closure#2} as core[6e72eb595340d7ba]::ops::function::FnOnce<(rustc_middle[9f74ec5cb00a905a]::ty::context::TyCtxt, rustc_span[624dabdd61f2978b]::def_id::LocalDefId)>>::call_once
  70:     0x7f3822c9cc7f - rustc_query_system[d65e888f3fe19f8d]::query::plumbing::try_execute_query::<rustc_query_impl[a5bf74a69bd3660]::DynamicConfig<rustc_query_system[d65e888f3fe19f8d]::query::caches::VecCache<rustc_span[624dabdd61f2978b]::def_id::LocalDefId, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[a5bf74a69bd3660]::plumbing::QueryCtxt, false>
  71:     0x7f3823fce5a4 - rustc_query_impl[a5bf74a69bd3660]::query_impl::check_mod_item_types::get_query_non_incr::__rust_end_short_backtrace
  72:     0x7f3823af3ea7 - <rustc_middle[9f74ec5cb00a905a]::hir::map::Map>::for_each_module::<rustc_hir_analysis[5549e2304bca0734]::check_crate::{closure#6}::{closure#0}>
  73:     0x7f3823af32dd - <rustc_session[a15a65f093e103e1]::session::Session>::time::<(), rustc_hir_analysis[5549e2304bca0734]::check_crate::{closure#6}>
  74:     0x7f3823af1e27 - rustc_hir_analysis[5549e2304bca0734]::check_crate
  75:     0x7f3823aea91a - rustc_interface[b943f00ad50b5541]::passes::analysis
  76:     0x7f3823b33aba - rustc_query_impl[a5bf74a69bd3660]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[a5bf74a69bd3660]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 1usize]>>
  77:     0x7f3823b33aa9 - <rustc_query_impl[a5bf74a69bd3660]::query_impl::analysis::dynamic_query::{closure#2} as core[6e72eb595340d7ba]::ops::function::FnOnce<(rustc_middle[9f74ec5cb00a905a]::ty::context::TyCtxt, ())>>::call_once
  78:     0x7f3823cb2da8 - rustc_query_system[d65e888f3fe19f8d]::query::plumbing::try_execute_query::<rustc_query_impl[a5bf74a69bd3660]::DynamicConfig<rustc_query_system[d65e888f3fe19f8d]::query::caches::SingleCache<rustc_middle[9f74ec5cb00a905a]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[a5bf74a69bd3660]::plumbing::QueryCtxt, false>
  79:     0x7f3823cb2b79 - rustc_query_impl[a5bf74a69bd3660]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  80:     0x7f3823c86a55 - <rustc_middle[9f74ec5cb00a905a]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[ea51492c730803db]::run_compiler::{closure#1}::{closure#2}::{closure#4}, core[6e72eb595340d7ba]::result::Result<(), rustc_span[624dabdd61f2978b]::ErrorGuaranteed>>
  81:     0x7f38238b9341 - <rustc_interface[b943f00ad50b5541]::interface::Compiler>::enter::<rustc_driver_impl[ea51492c730803db]::run_compiler::{closure#1}::{closure#2}, core[6e72eb595340d7ba]::result::Result<core[6e72eb595340d7ba]::option::Option<rustc_interface[b943f00ad50b5541]::queries::Linker>, rustc_span[624dabdd61f2978b]::ErrorGuaranteed>>
  82:     0x7f38238b4575 - rustc_span[624dabdd61f2978b]::set_source_map::<core[6e72eb595340d7ba]::result::Result<(), rustc_span[624dabdd61f2978b]::ErrorGuaranteed>, rustc_interface[b943f00ad50b5541]::interface::run_compiler<core[6e72eb595340d7ba]::result::Result<(), rustc_span[624dabdd61f2978b]::ErrorGuaranteed>, rustc_driver_impl[ea51492c730803db]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  83:     0x7f38238b3996 - <scoped_tls[8088cff701f74b4a]::ScopedKey<rustc_span[624dabdd61f2978b]::SessionGlobals>>::set::<rustc_interface[b943f00ad50b5541]::interface::run_compiler<core[6e72eb595340d7ba]::result::Result<(), rustc_span[624dabdd61f2978b]::ErrorGuaranteed>, rustc_driver_impl[ea51492c730803db]::run_compiler::{closure#1}>::{closure#0}, core[6e72eb595340d7ba]::result::Result<(), rustc_span[624dabdd61f2978b]::ErrorGuaranteed>>
  84:     0x7f38238b2f46 - std[4a840e81aae3439]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[b943f00ad50b5541]::util::run_in_thread_pool_with_globals<rustc_interface[b943f00ad50b5541]::interface::run_compiler<core[6e72eb595340d7ba]::result::Result<(), rustc_span[624dabdd61f2978b]::ErrorGuaranteed>, rustc_driver_impl[ea51492c730803db]::run_compiler::{closure#1}>::{closure#0}, core[6e72eb595340d7ba]::result::Result<(), rustc_span[624dabdd61f2978b]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[6e72eb595340d7ba]::result::Result<(), rustc_span[624dabdd61f2978b]::ErrorGuaranteed>>
  85:     0x7f38238b2cee - <<std[4a840e81aae3439]::thread::Builder>::spawn_unchecked_<rustc_interface[b943f00ad50b5541]::util::run_in_thread_pool_with_globals<rustc_interface[b943f00ad50b5541]::interface::run_compiler<core[6e72eb595340d7ba]::result::Result<(), rustc_span[624dabdd61f2978b]::ErrorGuaranteed>, rustc_driver_impl[ea51492c730803db]::run_compiler::{closure#1}>::{closure#0}, core[6e72eb595340d7ba]::result::Result<(), rustc_span[624dabdd61f2978b]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[6e72eb595340d7ba]::result::Result<(), rustc_span[624dabdd61f2978b]::ErrorGuaranteed>>::{closure#1} as core[6e72eb595340d7ba]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  86:     0x7f3825835695 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h61eb867555625a06
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/alloc/src/boxed.rs:2010:9
  87:     0x7f3825835695 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hb80c29f89b136b72
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/alloc/src/boxed.rs:2010:9
  88:     0x7f3825835695 - std::sys::unix::thread::Thread::new::thread_start::hf4205715d65b27a6
                               at /rustc/5bd28f5eac1ba3569bfa8d49ec3f5acbdfdff7a0/library/std/src/sys/unix/thread.rs:108:17
  89:     0x7f382129d44b - <unknown>
  90:     0x7f3821320e40 - <unknown>
  91:                0x0 - <unknown>

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 1.72.0-nightly (5bd28f5ea 2023-06-28) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [check_liveness] checking liveness of variables in `f999::{closure#0}`
#1 [mir_built] building MIR for `f999::{closure#0}`
#2 [unsafety_check_result] unsafety-checking `f999::{closure#0}`
#3 [unsafety_check_result] unsafety-checking `f999`
#4 [mir_const] preparing `f999` for borrow checking
#5 [mir_promoted] promoting constants in MIR for `f999`
#6 [mir_borrowck] borrow-checking `f999`
#7 [type_of] computing type of `f999::{opaque#0}`
#8 [check_mod_item_types] checking item types in top-level module
#9 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 4 previous errors

Some errors have detailed explanations: E0601, E0670, E0696.
For more information about an error, try `rustc --explain E0601`.

[matthiaskrgr]

Regression in nightly-2020-02-16
commit[0] 2020-02-14: Auto merge of #69115 - ehuss:update-books, r=Dylan-DPC
commit[1] 2020-02-14: Auto merge of #69172 - JohnTitor:rollup-6cbmwcw, r=JohnTitor
commit[2] 2020-02-15: Auto merge of #67681 - matthewjasper:infer-regions-in-borrowck, r=nikomatsakis
commit[3] 2020-02-15: Auto merge of #69182 - Dylan-DPC:rollup-ifsa9fx, r=Dylan-DPC
commit[4] 2020-02-15: Auto merge of #69168 - brainlock:test-textrel-regression, r=Mark-Simulacrum,tmandry

[compiler-errors]

Not async related:

fn f() -> impl Sized {
    'b: {
        continue 'b; 
    }
}

This is another one of those problems that has to do with checking the type of an opaque too early, which means calling mir_built on a body that isn't necessarily well-formed. :/

[matthiaskrgr]

Oh weird I thought I removed the async and it made the ICE into an error :|

[compiler-errors]

No big deal, just figured out a more minimal repro while looking at the call stack + being familiar with this class of issues.

It still needs to return an impl Trait to ICE, though.

[matthiaskrgr]

Another one:

trait Trait<const S: &'static str> {}

struct Bug<T>
where
    T: Trait<
        {
            'b: {
                continue 'b;
            }
        },
    >,
{
    t: T,
}

[matthiaskrgr]

update as of all the error handling refactoring:

auto-reduced (treereduce-rust):

async fn f999() -> Vec<usize> {
    'b: {
        continue 'b;
    }
}

original:

async fn f999() -> Vec<usize> {
    'b: {
        continue 'b; 
    }
}

Version information

rustc 1.78.0-nightly (b381d3ab2 2024-02-12)
binary: rustc
commit-hash: b381d3ab27f788f990551100c4425bb782d26d76
commit-date: 2024-02-12
host: x86_64-unknown-linux-gnu
release: 1.78.0-nightly
LLVM version: 17.0.6

Command:
/home/matthias/.rustup/toolchains/master/bin/rustc

Program output

error[E0670]: `async fn` is not permitted in Rust 2015
 --> /tmp/icemaker_global_tempdir.xis0YI8c1wQQ/rustc_testrunner_tmpdir_reporting.qkCDcJ81R2Og/mvce.rs:1:1
  |
1 | async fn f999() -> Vec<usize> {
  | ^^^^^ to use `async fn`, switch to Rust 2018 or later
  |
  = help: pass `--edition 2021` to `rustc`
  = note: for more on editions, read https://doc.rust-lang.org/edition-guide

error[E0601]: `main` function not found in crate `mvce`
 --> /tmp/icemaker_global_tempdir.xis0YI8c1wQQ/rustc_testrunner_tmpdir_reporting.qkCDcJ81R2Og/mvce.rs:5:2
  |
5 | }
  |  ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.xis0YI8c1wQQ/rustc_testrunner_tmpdir_reporting.qkCDcJ81R2Og/mvce.rs`

error[E0696]: `continue` pointing to a labeled block
 --> /tmp/icemaker_global_tempdir.xis0YI8c1wQQ/rustc_testrunner_tmpdir_reporting.qkCDcJ81R2Og/mvce.rs:3:9
  |
2 | /     'b: {
3 | |         continue 'b;
  | |         ^^^^^^^^^^^ labeled blocks cannot be `continue`'d
4 | |     }
  | |_____- labeled block the `continue` points to

thread 'rustc' panicked at compiler/rustc_passes/src/liveness/rwu_table.rs:51:9:
assertion failed: ln.index() < self.live_nodes
stack backtrace:
   0:     0x7f810c16c476 - std::backtrace_rs::backtrace::libunwind::trace::h3f288a3148e8bb15
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
   1:     0x7f810c16c476 - std::backtrace_rs::backtrace::trace_unsynchronized::h7277353061928bc0
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f810c16c476 - std::sys_common::backtrace::_print_fmt::hbf79f06a8c92ca0e
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/std/src/sys_common/backtrace.rs:68:5
   3:     0x7f810c16c476 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h0afd1ff8e38a8a84
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f810c1bf030 - core::fmt::rt::Argument::fmt::h7f26a9b6a6522b09
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/core/src/fmt/rt.rs:142:9
   5:     0x7f810c1bf030 - core::fmt::write::he7de9de816f98016
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/core/src/fmt/mod.rs:1120:17
   6:     0x7f810c15fc6f - std::io::Write::write_fmt::h38e65bf4265dc66c
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/std/src/io/mod.rs:1854:15
   7:     0x7f810c16c254 - std::sys_common::backtrace::_print::hf1424a842a74edeb
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f810c16c254 - std::sys_common::backtrace::print::hbb43acdb160822bd
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f810c16f047 - std::panicking::default_hook::{{closure}}::h9c602a562527e529
  10:     0x7f810c16eda9 - std::panicking::default_hook::h9cb3bf5f6c73326f
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/std/src/panicking.rs:292:9
  11:     0x7f8108f5cfdc - std[73253c920228642]::panicking::update_hook::<alloc[940273873142bb35]::boxed::Box<rustc_driver_impl[f037f419b039420a]::install_ice_hook::{closure#0}>>::{closure#0}
  12:     0x7f810c16f796 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h1e0fe9ec90d27cc3
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/alloc/src/boxed.rs:2030:9
  13:     0x7f810c16f796 - std::panicking::rust_panic_with_hook::hb5ad56797fd964c4
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/std/src/panicking.rs:785:13
  14:     0x7f810c16f4a9 - std::panicking::begin_panic_handler::{{closure}}::hd364aeee29433213
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/std/src/panicking.rs:651:13
  15:     0x7f810c16c976 - std::sys_common::backtrace::__rust_end_short_backtrace::ha10bb1568b9ec73d
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/std/src/sys_common/backtrace.rs:171:18
  16:     0x7f810c16f234 - rust_begin_unwind
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/std/src/panicking.rs:647:5
  17:     0x7f810c1bb785 - core::panicking::panic_fmt::h91fa7152f33c7717
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/core/src/panicking.rs:72:14
  18:     0x7f810c1bb843 - core::panicking::panic::hd1dee23cbb6390f9
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/core/src/panicking.rs:144:5
  19:     0x7f810aab2570 - rustc_passes[f9403d948beba02c]::liveness::check_liveness
  20:     0x7f810aab043b - rustc_query_impl[b78e7f0549dc02d3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b78e7f0549dc02d3]::query_impl::check_liveness::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 0usize]>>
  21:     0x7f810aaaf58d - rustc_query_system[74854bfa6cddafab]::query::plumbing::try_execute_query::<rustc_query_impl[b78e7f0549dc02d3]::DynamicConfig<rustc_query_system[74854bfa6cddafab]::query::caches::VecCache<rustc_span[a4806a91d128f927]::def_id::LocalDefId, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[b78e7f0549dc02d3]::plumbing::QueryCtxt, false>
  22:     0x7f810aaaf243 - rustc_query_impl[b78e7f0549dc02d3]::query_impl::check_liveness::get_query_non_incr::__rust_end_short_backtrace
  23:     0x7f810a56b801 - rustc_mir_build[a13df376210347cf]::build::mir_built
  24:     0x7f810a56b555 - rustc_query_impl[b78e7f0549dc02d3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b78e7f0549dc02d3]::query_impl::mir_built::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>
  25:     0x7f810a370bfa - rustc_query_system[74854bfa6cddafab]::query::plumbing::try_execute_query::<rustc_query_impl[b78e7f0549dc02d3]::DynamicConfig<rustc_query_system[74854bfa6cddafab]::query::caches::VecCache<rustc_span[a4806a91d128f927]::def_id::LocalDefId, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[b78e7f0549dc02d3]::plumbing::QueryCtxt, false>
  26:     0x7f810a3707d0 - rustc_query_impl[b78e7f0549dc02d3]::query_impl::mir_built::get_query_non_incr::__rust_end_short_backtrace
  27:     0x7f810a305b5f - rustc_mir_transform[21d810ff238a01d7]::ffi_unwind_calls::has_ffi_unwind_calls
  28:     0x7f810a305757 - rustc_query_impl[b78e7f0549dc02d3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b78e7f0549dc02d3]::query_impl::has_ffi_unwind_calls::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 1usize]>>
  29:     0x7f810a480cd3 - rustc_query_system[74854bfa6cddafab]::query::plumbing::try_execute_query::<rustc_query_impl[b78e7f0549dc02d3]::DynamicConfig<rustc_query_system[74854bfa6cddafab]::query::caches::VecCache<rustc_span[a4806a91d128f927]::def_id::LocalDefId, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[b78e7f0549dc02d3]::plumbing::QueryCtxt, false>
  30:     0x7f810a48099d - rustc_query_impl[b78e7f0549dc02d3]::query_impl::has_ffi_unwind_calls::get_query_non_incr::__rust_end_short_backtrace
  31:     0x7f810a47edbd - rustc_mir_transform[21d810ff238a01d7]::mir_const
  32:     0x7f810a47ecf9 - rustc_query_impl[b78e7f0549dc02d3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b78e7f0549dc02d3]::query_impl::mir_const::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>
  33:     0x7f810a370bfa - rustc_query_system[74854bfa6cddafab]::query::plumbing::try_execute_query::<rustc_query_impl[b78e7f0549dc02d3]::DynamicConfig<rustc_query_system[74854bfa6cddafab]::query::caches::VecCache<rustc_span[a4806a91d128f927]::def_id::LocalDefId, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[b78e7f0549dc02d3]::plumbing::QueryCtxt, false>
  34:     0x7f810a370650 - rustc_query_impl[b78e7f0549dc02d3]::query_impl::mir_const::get_query_non_incr::__rust_end_short_backtrace
  35:     0x7f810845fdb2 - rustc_mir_transform[21d810ff238a01d7]::mir_promoted
  36:     0x7f810a75eae6 - rustc_query_impl[b78e7f0549dc02d3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b78e7f0549dc02d3]::query_impl::mir_promoted::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 16usize]>>
  37:     0x7f810a75edc0 - rustc_query_system[74854bfa6cddafab]::query::plumbing::try_execute_query::<rustc_query_impl[b78e7f0549dc02d3]::DynamicConfig<rustc_query_system[74854bfa6cddafab]::query::caches::VecCache<rustc_span[a4806a91d128f927]::def_id::LocalDefId, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[b78e7f0549dc02d3]::plumbing::QueryCtxt, false>
  38:     0x7f810b01b593 - rustc_query_impl[b78e7f0549dc02d3]::query_impl::mir_promoted::get_query_non_incr::__rust_end_short_backtrace
  39:     0x7f810b01b6ae - rustc_borrowck[80a3d1af88a5539b]::mir_borrowck
  40:     0x7f810b01b5d9 - rustc_query_impl[b78e7f0549dc02d3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b78e7f0549dc02d3]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>
  41:     0x7f810a370bfa - rustc_query_system[74854bfa6cddafab]::query::plumbing::try_execute_query::<rustc_query_impl[b78e7f0549dc02d3]::DynamicConfig<rustc_query_system[74854bfa6cddafab]::query::caches::VecCache<rustc_span[a4806a91d128f927]::def_id::LocalDefId, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[b78e7f0549dc02d3]::plumbing::QueryCtxt, false>
  42:     0x7f810a370590 - rustc_query_impl[b78e7f0549dc02d3]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
  43:     0x7f810ae25058 - <rustc_borrowck[80a3d1af88a5539b]::type_check::TypeChecker>::prove_closure_bounds
  44:     0x7f810b0840c3 - <rustc_borrowck[80a3d1af88a5539b]::type_check::TypeChecker>::typeck_mir
  45:     0x7f810784dd6a - rustc_borrowck[80a3d1af88a5539b]::type_check::type_check
  46:     0x7f8107832cd2 - rustc_borrowck[80a3d1af88a5539b]::nll::compute_regions
  47:     0x7f810b02b2de - rustc_borrowck[80a3d1af88a5539b]::do_mir_borrowck
  48:     0x7f810b01bb8f - rustc_borrowck[80a3d1af88a5539b]::mir_borrowck
  49:     0x7f810b01b5d9 - rustc_query_impl[b78e7f0549dc02d3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b78e7f0549dc02d3]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>
  50:     0x7f810a370bfa - rustc_query_system[74854bfa6cddafab]::query::plumbing::try_execute_query::<rustc_query_impl[b78e7f0549dc02d3]::DynamicConfig<rustc_query_system[74854bfa6cddafab]::query::caches::VecCache<rustc_span[a4806a91d128f927]::def_id::LocalDefId, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[b78e7f0549dc02d3]::plumbing::QueryCtxt, false>
  51:     0x7f810a370590 - rustc_query_impl[b78e7f0549dc02d3]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
  52:     0x7f810a820396 - rustc_middle[dbb6cff8550fbced]::query::plumbing::query_get_at::<rustc_query_system[74854bfa6cddafab]::query::caches::VecCache<rustc_span[a4806a91d128f927]::def_id::LocalDefId, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>>
  53:     0x7f810b1502d1 - rustc_hir_analysis[9a410817be2ff534]::collect::type_of::type_of_opaque
  54:     0x7f810b150149 - rustc_query_impl[b78e7f0549dc02d3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b78e7f0549dc02d3]::query_impl::type_of_opaque::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>
  55:     0x7f810a27b0e1 - rustc_query_system[74854bfa6cddafab]::query::plumbing::try_execute_query::<rustc_query_impl[b78e7f0549dc02d3]::DynamicConfig<rustc_query_system[74854bfa6cddafab]::query::caches::DefIdCache<rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[b78e7f0549dc02d3]::plumbing::QueryCtxt, false>
  56:     0x7f810b1a525e - rustc_query_impl[b78e7f0549dc02d3]::query_impl::type_of_opaque::get_query_non_incr::__rust_end_short_backtrace
  57:     0x7f810a4e7cd7 - rustc_middle[dbb6cff8550fbced]::query::plumbing::query_get_at::<rustc_query_system[74854bfa6cddafab]::query::caches::DefIdCache<rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>>
  58:     0x7f81084c305e - rustc_hir_analysis[9a410817be2ff534]::collect::type_of::type_of
  59:     0x7f810a27c466 - rustc_query_impl[b78e7f0549dc02d3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b78e7f0549dc02d3]::query_impl::type_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>
  60:     0x7f810a27b0e1 - rustc_query_system[74854bfa6cddafab]::query::plumbing::try_execute_query::<rustc_query_impl[b78e7f0549dc02d3]::DynamicConfig<rustc_query_system[74854bfa6cddafab]::query::caches::DefIdCache<rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[b78e7f0549dc02d3]::plumbing::QueryCtxt, false>
  61:     0x7f810a27abdd - rustc_query_impl[b78e7f0549dc02d3]::query_impl::type_of::get_query_non_incr::__rust_end_short_backtrace
  62:     0x7f810a4e7cd7 - rustc_middle[dbb6cff8550fbced]::query::plumbing::query_get_at::<rustc_query_system[74854bfa6cddafab]::query::caches::DefIdCache<rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 8usize]>>>
  63:     0x7f810ad21696 - rustc_hir_analysis[9a410817be2ff534]::check::check::check_item_type
  64:     0x7f810a75993a - rustc_hir_analysis[9a410817be2ff534]::check::wfcheck::check_well_formed
  65:     0x7f810a7587dd - rustc_query_impl[b78e7f0549dc02d3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b78e7f0549dc02d3]::query_impl::check_well_formed::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 1usize]>>
  66:     0x7f810a757eb1 - rustc_query_system[74854bfa6cddafab]::query::plumbing::try_execute_query::<rustc_query_impl[b78e7f0549dc02d3]::DynamicConfig<rustc_query_system[74854bfa6cddafab]::query::caches::VecCache<rustc_hir[6019942fb8e590f1]::hir_id::OwnerId, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[b78e7f0549dc02d3]::plumbing::QueryCtxt, false>
  67:     0x7f810a757c1b - rustc_query_impl[b78e7f0549dc02d3]::query_impl::check_well_formed::get_query_non_incr::__rust_end_short_backtrace
  68:     0x7f810a755782 - rustc_hir_analysis[9a410817be2ff534]::check::wfcheck::check_mod_type_wf
  69:     0x7f810a7556c7 - rustc_query_impl[b78e7f0549dc02d3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b78e7f0549dc02d3]::query_impl::check_mod_type_wf::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 1usize]>>
  70:     0x7f810abd0cbb - rustc_query_system[74854bfa6cddafab]::query::plumbing::try_execute_query::<rustc_query_impl[b78e7f0549dc02d3]::DynamicConfig<rustc_query_system[74854bfa6cddafab]::query::caches::DefaultCache<rustc_span[a4806a91d128f927]::def_id::LocalModDefId, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[b78e7f0549dc02d3]::plumbing::QueryCtxt, false>
  71:     0x7f810abd09c3 - rustc_query_impl[b78e7f0549dc02d3]::query_impl::check_mod_type_wf::get_query_non_incr::__rust_end_short_backtrace
  72:     0x7f810a36e0c5 - rustc_middle[dbb6cff8550fbced]::query::plumbing::query_ensure_error_guaranteed::<rustc_query_system[74854bfa6cddafab]::query::caches::DefaultCache<rustc_span[a4806a91d128f927]::def_id::LocalModDefId, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 1usize]>>, ()>
  73:     0x7f810a36e952 - rustc_hir_analysis[9a410817be2ff534]::check_crate
  74:     0x7f810abe0419 - rustc_interface[ceb207a8fb5539d]::passes::analysis
  75:     0x7f810abe005f - rustc_query_impl[b78e7f0549dc02d3]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b78e7f0549dc02d3]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 1usize]>>
  76:     0x7f810b0c6064 - rustc_query_system[74854bfa6cddafab]::query::plumbing::try_execute_query::<rustc_query_impl[b78e7f0549dc02d3]::DynamicConfig<rustc_query_system[74854bfa6cddafab]::query::caches::SingleCache<rustc_middle[dbb6cff8550fbced]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[b78e7f0549dc02d3]::plumbing::QueryCtxt, false>
  77:     0x7f810b0c5dc7 - rustc_query_impl[b78e7f0549dc02d3]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  78:     0x7f810af409fb - rustc_interface[ceb207a8fb5539d]::interface::run_compiler::<core[ed182bbac36ed604]::result::Result<(), rustc_span[a4806a91d128f927]::ErrorGuaranteed>, rustc_driver_impl[f037f419b039420a]::run_compiler::{closure#0}>::{closure#0}
  79:     0x7f810b16ef12 - std[73253c920228642]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[ceb207a8fb5539d]::util::run_in_thread_with_globals<rustc_interface[ceb207a8fb5539d]::util::run_in_thread_pool_with_globals<rustc_interface[ceb207a8fb5539d]::interface::run_compiler<core[ed182bbac36ed604]::result::Result<(), rustc_span[a4806a91d128f927]::ErrorGuaranteed>, rustc_driver_impl[f037f419b039420a]::run_compiler::{closure#0}>::{closure#0}, core[ed182bbac36ed604]::result::Result<(), rustc_span[a4806a91d128f927]::ErrorGuaranteed>>::{closure#0}, core[ed182bbac36ed604]::result::Result<(), rustc_span[a4806a91d128f927]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[ed182bbac36ed604]::result::Result<(), rustc_span[a4806a91d128f927]::ErrorGuaranteed>>
  80:     0x7f810b16ed3e - <<std[73253c920228642]::thread::Builder>::spawn_unchecked_<rustc_interface[ceb207a8fb5539d]::util::run_in_thread_with_globals<rustc_interface[ceb207a8fb5539d]::util::run_in_thread_pool_with_globals<rustc_interface[ceb207a8fb5539d]::interface::run_compiler<core[ed182bbac36ed604]::result::Result<(), rustc_span[a4806a91d128f927]::ErrorGuaranteed>, rustc_driver_impl[f037f419b039420a]::run_compiler::{closure#0}>::{closure#0}, core[ed182bbac36ed604]::result::Result<(), rustc_span[a4806a91d128f927]::ErrorGuaranteed>>::{closure#0}, core[ed182bbac36ed604]::result::Result<(), rustc_span[a4806a91d128f927]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[ed182bbac36ed604]::result::Result<(), rustc_span[a4806a91d128f927]::ErrorGuaranteed>>::{closure#1} as core[ed182bbac36ed604]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  81:     0x7f810c178985 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h37d86e7af57ec8cf
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/alloc/src/boxed.rs:2016:9
  82:     0x7f810c178985 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h99a2218ed45ac1ce
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/alloc/src/boxed.rs:2016:9
  83:     0x7f810c178985 - std::sys::pal::unix::thread::Thread::new::thread_start::h6344e9d30547345d
                               at /rustc/b381d3ab27f788f990551100c4425bb782d26d76/library/std/src/sys/pal/unix/thread.rs:108:17
  84:     0x7f810606a9eb - <unknown>
  85:     0x7f81060ee7cc - <unknown>
  86:                0x0 - <unknown>

error: 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 1.78.0-nightly (b381d3ab2 2024-02-12) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [check_liveness] checking liveness of variables in `f999::{closure#0}`
#1 [mir_built] building MIR for `f999::{closure#0}`
#2 [has_ffi_unwind_calls] checking if `f999::{closure#0}` contains FFI-unwind calls
#3 [mir_const] preparing `f999::{closure#0}` for borrow checking
#4 [mir_promoted] promoting constants in MIR for `f999::{closure#0}`
#5 [mir_borrowck] borrow-checking `f999::{closure#0}`
#6 [mir_borrowck] borrow-checking `f999`
#7 [type_of_opaque] computing type of opaque `f999::{opaque#0}`
#8 [type_of] computing type of `f999::{opaque#0}`
#9 [check_well_formed] checking that `f999::{opaque#0}` is well-formed
#10 [check_mod_type_wf] checking that types are well-formed in top-level module
#11 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 3 previous errors

Some errors have detailed explanations: E0601, E0670, E0696.
For more information about an error, try `rustc --explain E0601`.