ICE: `argument to transmute has inference variables`

[matthiaskrgr]

snippet:

fn main() {
    let _: [_; unsafe { std::mem::transmute(|o_b: Option<_>| {}) }];
}

Version information

rustc 1.79.0-nightly (a77322c16 2024-04-02)
binary: rustc
commit-hash: a77322c16f188402fa22a5e87100acce42433cbc
commit-date: 2024-04-02
host: x86_64-unknown-linux-gnu
release: 1.79.0-nightly
LLVM version: 18.1.2

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

Program output

error: internal compiler error: argument to transmute has inference variables
 --> /tmp/icemaker_global_tempdir.IcHxd1IVykWP/rustc_testrunner_tmpdir_reporting.j8kfnlKQF91a/mvce.rs:2:25
  |
2 |     let _: [_; unsafe { std::mem::transmute(|o_b: Option<_>| {}) }];
  |                         ^^^^^^^^^^^^^^^^^^^

thread 'rustc' panicked at compiler/rustc_hir_typeck/src/intrinsicck.rs:54:23:
Box<dyn Any>
stack backtrace:
   0:     0x7f35d039cab5 - std::backtrace_rs::backtrace::libunwind::trace::hf26b8e97f4d981a3
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
   1:     0x7f35d039cab5 - std::backtrace_rs::backtrace::trace_unsynchronized::h257c3a9fcc68cb34
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f35d039cab5 - std::sys_common::backtrace::_print_fmt::h78d592e526d576cc
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/std/src/sys_common/backtrace.rs:68:5
   3:     0x7f35d039cab5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h406a266f6476e993
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f35d03ebcfb - core::fmt::rt::Argument::fmt::h7950f9cc4e18eb74
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/core/src/fmt/rt.rs:142:9
   5:     0x7f35d03ebcfb - core::fmt::write::hf6d8222a297fe1b5
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/core/src/fmt/mod.rs:1153:17
   6:     0x7f35d039169f - std::io::Write::write_fmt::h2e25e66707b8719c
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/std/src/io/mod.rs:1843:15
   7:     0x7f35d039c88e - std::sys_common::backtrace::_print::h93052b2b7ae3e225
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f35d039c88e - std::sys_common::backtrace::print::h2c3363fe806c95b9
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f35d039f2d9 - std::panicking::default_hook::{{closure}}::hccbad107bfb00663
  10:     0x7f35d039f043 - std::panicking::default_hook::h0629782f23910600
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/std/src/panicking.rs:291:9
  11:     0x7f35ccc0344f - std[cd169797441e4304]::panicking::update_hook::<alloc[80a8ff80e015276]::boxed::Box<rustc_driver_impl[4156c2df247de3fc]::install_ice_hook::{closure#0}>>::{closure#0}
  12:     0x7f35d039f9dc - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hfd80129a92e7f542
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/alloc/src/boxed.rs:2032:9
  13:     0x7f35d039f9dc - std::panicking::rust_panic_with_hook::hbdb3c4b71c4fae93
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/std/src/panicking.rs:792:13
  14:     0x7f35ccc33224 - std[cd169797441e4304]::panicking::begin_panic::<rustc_errors[36548b9f9a9ea726]::ExplicitBug>::{closure#0}
  15:     0x7f35ccc30146 - std[cd169797441e4304]::sys_common::backtrace::__rust_end_short_backtrace::<std[cd169797441e4304]::panicking::begin_panic<rustc_errors[36548b9f9a9ea726]::ExplicitBug>::{closure#0}, !>
  16:     0x7f35ccc2fe26 - std[cd169797441e4304]::panicking::begin_panic::<rustc_errors[36548b9f9a9ea726]::ExplicitBug>
  17:     0x7f35ccc3c641 - <rustc_errors[36548b9f9a9ea726]::diagnostic::BugAbort as rustc_errors[36548b9f9a9ea726]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
  18:     0x7f35ccd633fc - <rustc_errors[36548b9f9a9ea726]::DiagCtxt>::span_bug::<rustc_span[abf425ab4de01d9]::span_encoding::Span, &str>
  19:     0x7f35ce7fd76b - <rustc_hir_typeck[312bf9d4ee85e4af]::fn_ctxt::FnCtxt>::check_transmute
  20:     0x7f35ce219892 - rustc_hir_typeck[312bf9d4ee85e4af]::typeck
  21:     0x7f35ce217557 - rustc_query_impl[f27b006aa91c0ba0]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f27b006aa91c0ba0]::query_impl::typeck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 8usize]>>
  22:     0x7f35ce2044f1 - rustc_query_system[e2bc6f1fc30f6df]::query::plumbing::try_execute_query::<rustc_query_impl[f27b006aa91c0ba0]::DynamicConfig<rustc_query_system[e2bc6f1fc30f6df]::query::caches::VecCache<rustc_span[abf425ab4de01d9]::def_id::LocalDefId, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[f27b006aa91c0ba0]::plumbing::QueryCtxt, false>
  23:     0x7f35ce20094c - rustc_query_impl[f27b006aa91c0ba0]::query_impl::typeck::get_query_non_incr::__rust_end_short_backtrace
  24:     0x7f35ce30e608 - rustc_mir_build[af64b97e60cfd821]::thir::pattern::check_match::check_match
  25:     0x7f35ce30d77b - rustc_query_impl[f27b006aa91c0ba0]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f27b006aa91c0ba0]::query_impl::check_match::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 1usize]>>
  26:     0x7f35ce71227b - rustc_query_system[e2bc6f1fc30f6df]::query::plumbing::try_execute_query::<rustc_query_impl[f27b006aa91c0ba0]::DynamicConfig<rustc_query_system[e2bc6f1fc30f6df]::query::caches::VecCache<rustc_span[abf425ab4de01d9]::def_id::LocalDefId, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[f27b006aa91c0ba0]::plumbing::QueryCtxt, false>
  27:     0x7f35ce711fd5 - rustc_query_impl[f27b006aa91c0ba0]::query_impl::check_match::get_query_non_incr::__rust_end_short_backtrace
  28:     0x7f35ce301cb3 - rustc_mir_build[af64b97e60cfd821]::build::mir_build
  29:     0x7f35ce301146 - rustc_query_impl[f27b006aa91c0ba0]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f27b006aa91c0ba0]::query_impl::mir_built::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 8usize]>>
  30:     0x7f35ce2044f1 - rustc_query_system[e2bc6f1fc30f6df]::query::plumbing::try_execute_query::<rustc_query_impl[f27b006aa91c0ba0]::DynamicConfig<rustc_query_system[e2bc6f1fc30f6df]::query::caches::VecCache<rustc_span[abf425ab4de01d9]::def_id::LocalDefId, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[f27b006aa91c0ba0]::plumbing::QueryCtxt, false>
  31:     0x7f35ce2040cc - rustc_query_impl[f27b006aa91c0ba0]::query_impl::mir_built::get_query_non_incr::__rust_end_short_backtrace
  32:     0x7f35ce203df5 - rustc_middle[f32ad3853e76b525]::query::plumbing::query_get_at::<rustc_query_system[e2bc6f1fc30f6df]::query::caches::VecCache<rustc_span[abf425ab4de01d9]::def_id::LocalDefId, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 8usize]>>>
  33:     0x7f35ce703e01 - rustc_mir_transform[22a0d5156851a26f]::mir_const_qualif
  34:     0x7f35ce703daf - rustc_query_impl[f27b006aa91c0ba0]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f27b006aa91c0ba0]::query_impl::mir_const_qualif::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 4usize]>>
  35:     0x7f35ce70388e - rustc_query_system[e2bc6f1fc30f6df]::query::plumbing::try_execute_query::<rustc_query_impl[f27b006aa91c0ba0]::DynamicConfig<rustc_query_system[e2bc6f1fc30f6df]::query::caches::DefIdCache<rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 4usize]>>, false, false, false>, rustc_query_impl[f27b006aa91c0ba0]::plumbing::QueryCtxt, false>
  36:     0x7f35ce703609 - rustc_query_impl[f27b006aa91c0ba0]::query_impl::mir_const_qualif::get_query_non_incr::__rust_end_short_backtrace
  37:     0x7f35ce703436 - rustc_middle[f32ad3853e76b525]::query::plumbing::query_get_at::<rustc_query_system[e2bc6f1fc30f6df]::query::caches::DefIdCache<rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 4usize]>>>
  38:     0x7f35cbb13d06 - rustc_mir_transform[22a0d5156851a26f]::mir_promoted
  39:     0x7f35ce2e5292 - rustc_query_impl[f27b006aa91c0ba0]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f27b006aa91c0ba0]::query_impl::mir_promoted::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 16usize]>>
  40:     0x7f35ce2e5549 - rustc_query_system[e2bc6f1fc30f6df]::query::plumbing::try_execute_query::<rustc_query_impl[f27b006aa91c0ba0]::DynamicConfig<rustc_query_system[e2bc6f1fc30f6df]::query::caches::VecCache<rustc_span[abf425ab4de01d9]::def_id::LocalDefId, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[f27b006aa91c0ba0]::plumbing::QueryCtxt, false>
  41:     0x7f35ce2e518f - rustc_query_impl[f27b006aa91c0ba0]::query_impl::mir_promoted::get_query_non_incr::__rust_end_short_backtrace
  42:     0x7f35ce202672 - rustc_borrowck[248ed8311a6775a9]::mir_borrowck
  43:     0x7f35ce2025a7 - rustc_query_impl[f27b006aa91c0ba0]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f27b006aa91c0ba0]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 8usize]>>
  44:     0x7f35ce2044f1 - rustc_query_system[e2bc6f1fc30f6df]::query::plumbing::try_execute_query::<rustc_query_impl[f27b006aa91c0ba0]::DynamicConfig<rustc_query_system[e2bc6f1fc30f6df]::query::caches::VecCache<rustc_span[abf425ab4de01d9]::def_id::LocalDefId, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[f27b006aa91c0ba0]::plumbing::QueryCtxt, false>
  45:     0x7f35ce20400c - rustc_query_impl[f27b006aa91c0ba0]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
  46:     0x7f35ce70b02b - rustc_mir_transform[22a0d5156851a26f]::mir_drops_elaborated_and_const_checked
  47:     0x7f35ce70a72f - rustc_query_impl[f27b006aa91c0ba0]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f27b006aa91c0ba0]::query_impl::mir_drops_elaborated_and_const_checked::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 8usize]>>
  48:     0x7f35ce2044f1 - rustc_query_system[e2bc6f1fc30f6df]::query::plumbing::try_execute_query::<rustc_query_impl[f27b006aa91c0ba0]::DynamicConfig<rustc_query_system[e2bc6f1fc30f6df]::query::caches::VecCache<rustc_span[abf425ab4de01d9]::def_id::LocalDefId, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[f27b006aa91c0ba0]::plumbing::QueryCtxt, false>
  49:     0x7f35ce203e9c - rustc_query_impl[f27b006aa91c0ba0]::query_impl::mir_drops_elaborated_and_const_checked::get_query_non_incr::__rust_end_short_backtrace
  50:     0x7f35ce203df5 - rustc_middle[f32ad3853e76b525]::query::plumbing::query_get_at::<rustc_query_system[e2bc6f1fc30f6df]::query::caches::VecCache<rustc_span[abf425ab4de01d9]::def_id::LocalDefId, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 8usize]>>>
  51:     0x7f35ce7094ec - rustc_mir_transform[22a0d5156851a26f]::mir_for_ctfe
  52:     0x7f35ce709465 - rustc_query_impl[f27b006aa91c0ba0]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f27b006aa91c0ba0]::query_impl::mir_for_ctfe::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 8usize]>>
  53:     0x7f35ce1b4c1e - rustc_query_system[e2bc6f1fc30f6df]::query::plumbing::try_execute_query::<rustc_query_impl[f27b006aa91c0ba0]::DynamicConfig<rustc_query_system[e2bc6f1fc30f6df]::query::caches::DefIdCache<rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[f27b006aa91c0ba0]::plumbing::QueryCtxt, false>
  54:     0x7f35ceba79de - rustc_query_impl[f27b006aa91c0ba0]::query_impl::mir_for_ctfe::get_query_non_incr::__rust_end_short_backtrace
  55:     0x7f35ceba7d0a - <rustc_const_eval[b66d8613139a267c]::interpret::eval_context::InterpCx<rustc_const_eval[b66d8613139a267c]::const_eval::machine::CompileTimeInterpreter>>::load_mir
  56:     0x7f35ceba9b1b - rustc_const_eval[b66d8613139a267c]::const_eval::eval_queries::eval_to_allocation_raw_provider
  57:     0x7f35ceba987c - rustc_query_impl[f27b006aa91c0ba0]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f27b006aa91c0ba0]::query_impl::eval_to_allocation_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 24usize]>>
  58:     0x7f35ceba68d6 - rustc_query_system[e2bc6f1fc30f6df]::query::plumbing::try_execute_query::<rustc_query_impl[f27b006aa91c0ba0]::DynamicConfig<rustc_query_system[e2bc6f1fc30f6df]::query::caches::DefaultCache<rustc_middle[f32ad3853e76b525]::ty::ParamEnvAnd<rustc_middle[f32ad3853e76b525]::mir::interpret::GlobalId>, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[f27b006aa91c0ba0]::plumbing::QueryCtxt, false>
  59:     0x7f35ceba64ac - rustc_query_impl[f27b006aa91c0ba0]::query_impl::eval_to_allocation_raw::get_query_non_incr::__rust_end_short_backtrace
  60:     0x7f35ceba6036 - rustc_middle[f32ad3853e76b525]::query::plumbing::query_get_at::<rustc_query_system[e2bc6f1fc30f6df]::query::caches::DefaultCache<rustc_middle[f32ad3853e76b525]::ty::ParamEnvAnd<rustc_middle[f32ad3853e76b525]::mir::interpret::GlobalId>, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 24usize]>>>
  61:     0x7f35ceb80fe1 - rustc_const_eval[b66d8613139a267c]::const_eval::valtrees::eval_to_valtree
  62:     0x7f35ceb80f62 - <rustc_const_eval[b66d8613139a267c]::provide::{closure#0} as core[620758cd80b91dd0]::ops::function::FnOnce<(rustc_middle[f32ad3853e76b525]::ty::context::TyCtxt, rustc_middle[f32ad3853e76b525]::ty::ParamEnvAnd<rustc_middle[f32ad3853e76b525]::mir::interpret::GlobalId>)>>::call_once
  63:     0x7f35ceb80f36 - rustc_query_impl[f27b006aa91c0ba0]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f27b006aa91c0ba0]::query_impl::eval_to_valtree::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 24usize]>>
  64:     0x7f35ceb80eef - <rustc_query_impl[f27b006aa91c0ba0]::query_impl::eval_to_valtree::dynamic_query::{closure#2} as core[620758cd80b91dd0]::ops::function::FnOnce<(rustc_middle[f32ad3853e76b525]::ty::context::TyCtxt, rustc_middle[f32ad3853e76b525]::ty::ParamEnvAnd<rustc_middle[f32ad3853e76b525]::mir::interpret::GlobalId>)>>::call_once
  65:     0x7f35ceba69b1 - rustc_query_system[e2bc6f1fc30f6df]::query::plumbing::try_execute_query::<rustc_query_impl[f27b006aa91c0ba0]::DynamicConfig<rustc_query_system[e2bc6f1fc30f6df]::query::caches::DefaultCache<rustc_middle[f32ad3853e76b525]::ty::ParamEnvAnd<rustc_middle[f32ad3853e76b525]::mir::interpret::GlobalId>, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[f27b006aa91c0ba0]::plumbing::QueryCtxt, false>
  66:     0x7f35ce3ebb2c - rustc_query_impl[f27b006aa91c0ba0]::query_impl::eval_to_valtree::get_query_non_incr::__rust_end_short_backtrace
  67:     0x7f35ce3ea5ff - rustc_middle[f32ad3853e76b525]::query::plumbing::query_get_at::<rustc_query_system[e2bc6f1fc30f6df]::query::caches::DefaultCache<rustc_middle[f32ad3853e76b525]::ty::ParamEnvAnd<rustc_middle[f32ad3853e76b525]::mir::interpret::GlobalId>, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 24usize]>>>
  68:     0x7f35ce7fea82 - <rustc_middle[f32ad3853e76b525]::ty::context::TyCtxt>::const_eval_global_id_for_typeck
  69:     0x7f35ce7fe1eb - <rustc_middle[f32ad3853e76b525]::ty::context::TyCtxt>::const_eval_resolve_for_typeck
  70:     0x7f35ce7fdfa0 - <rustc_middle[f32ad3853e76b525]::ty::consts::Const>::eval
  71:     0x7f35ce2142c1 - <rustc_trait_selection[d9dc339916816dbb]::traits::normalize::AssocTypeNormalizer as rustc_type_ir[6eae33a59f3ded5]::fold::TypeFolder<rustc_middle[f32ad3853e76b525]::ty::context::TyCtxt>>::fold_const
  72:     0x7f35ce761a28 - <rustc_middle[f32ad3853e76b525]::ty::Ty as rustc_type_ir[6eae33a59f3ded5]::fold::TypeSuperFoldable<rustc_middle[f32ad3853e76b525]::ty::context::TyCtxt>>::try_super_fold_with::<rustc_trait_selection[d9dc339916816dbb]::traits::normalize::AssocTypeNormalizer>
  73:     0x7f35ce05f675 - <rustc_hir_typeck[312bf9d4ee85e4af]::fn_ctxt::FnCtxt>::normalize::<rustc_middle[f32ad3853e76b525]::ty::Ty>
  74:     0x7f35ce8ef57e - <dyn rustc_hir_analysis[3e5cabd178036183]::hir_ty_lowering::HirTyLowerer>::lower_ty_common
  75:     0x7f35cb4ae618 - <rustc_hir_typeck[312bf9d4ee85e4af]::gather_locals::GatherLocalsVisitor as rustc_hir[983043ae5138aa3e]::intravisit::Visitor>::visit_expr
  76:     0x7f35ce220e9e - rustc_hir_typeck[312bf9d4ee85e4af]::check::check_fn
  77:     0x7f35ce217b96 - rustc_hir_typeck[312bf9d4ee85e4af]::typeck
  78:     0x7f35ce217557 - rustc_query_impl[f27b006aa91c0ba0]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f27b006aa91c0ba0]::query_impl::typeck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 8usize]>>
  79:     0x7f35ce2044f1 - rustc_query_system[e2bc6f1fc30f6df]::query::plumbing::try_execute_query::<rustc_query_impl[f27b006aa91c0ba0]::DynamicConfig<rustc_query_system[e2bc6f1fc30f6df]::query::caches::VecCache<rustc_span[abf425ab4de01d9]::def_id::LocalDefId, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[f27b006aa91c0ba0]::plumbing::QueryCtxt, false>
  80:     0x7f35ce20094c - rustc_query_impl[f27b006aa91c0ba0]::query_impl::typeck::get_query_non_incr::__rust_end_short_backtrace
  81:     0x7f35ce20052b - <rustc_middle[f32ad3853e76b525]::hir::map::Map>::par_body_owners::<rustc_hir_analysis[3e5cabd178036183]::check_crate::{closure#4}>::{closure#0}
  82:     0x7f35ce1ff1e1 - rustc_hir_analysis[3e5cabd178036183]::check_crate
  83:     0x7f35ce4ce36a - rustc_interface[bc155c77a5e962ed]::passes::analysis
  84:     0x7f35ce4cded3 - rustc_query_impl[f27b006aa91c0ba0]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f27b006aa91c0ba0]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 1usize]>>
  85:     0x7f35cee12de5 - rustc_query_system[e2bc6f1fc30f6df]::query::plumbing::try_execute_query::<rustc_query_impl[f27b006aa91c0ba0]::DynamicConfig<rustc_query_system[e2bc6f1fc30f6df]::query::caches::SingleCache<rustc_middle[f32ad3853e76b525]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[f27b006aa91c0ba0]::plumbing::QueryCtxt, false>
  86:     0x7f35cee12b49 - rustc_query_impl[f27b006aa91c0ba0]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  87:     0x7f35ceccb1d3 - rustc_interface[bc155c77a5e962ed]::interface::run_compiler::<core[620758cd80b91dd0]::result::Result<(), rustc_span[abf425ab4de01d9]::ErrorGuaranteed>, rustc_driver_impl[4156c2df247de3fc]::run_compiler::{closure#0}>::{closure#0}
  88:     0x7f35ced5ac19 - std[cd169797441e4304]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[bc155c77a5e962ed]::util::run_in_thread_with_globals<rustc_interface[bc155c77a5e962ed]::util::run_in_thread_pool_with_globals<rustc_interface[bc155c77a5e962ed]::interface::run_compiler<core[620758cd80b91dd0]::result::Result<(), rustc_span[abf425ab4de01d9]::ErrorGuaranteed>, rustc_driver_impl[4156c2df247de3fc]::run_compiler::{closure#0}>::{closure#0}, core[620758cd80b91dd0]::result::Result<(), rustc_span[abf425ab4de01d9]::ErrorGuaranteed>>::{closure#0}, core[620758cd80b91dd0]::result::Result<(), rustc_span[abf425ab4de01d9]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[620758cd80b91dd0]::result::Result<(), rustc_span[abf425ab4de01d9]::ErrorGuaranteed>>
  89:     0x7f35ced5aa27 - <<std[cd169797441e4304]::thread::Builder>::spawn_unchecked_<rustc_interface[bc155c77a5e962ed]::util::run_in_thread_with_globals<rustc_interface[bc155c77a5e962ed]::util::run_in_thread_pool_with_globals<rustc_interface[bc155c77a5e962ed]::interface::run_compiler<core[620758cd80b91dd0]::result::Result<(), rustc_span[abf425ab4de01d9]::ErrorGuaranteed>, rustc_driver_impl[4156c2df247de3fc]::run_compiler::{closure#0}>::{closure#0}, core[620758cd80b91dd0]::result::Result<(), rustc_span[abf425ab4de01d9]::ErrorGuaranteed>>::{closure#0}, core[620758cd80b91dd0]::result::Result<(), rustc_span[abf425ab4de01d9]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[620758cd80b91dd0]::result::Result<(), rustc_span[abf425ab4de01d9]::ErrorGuaranteed>>::{closure#1} as core[620758cd80b91dd0]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  90:     0x7f35d03a93fb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd0a22ba669218411
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/alloc/src/boxed.rs:2018:9
  91:     0x7f35d03a93fb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hcc773386fb5423d0
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/alloc/src/boxed.rs:2018:9
  92:     0x7f35d03a93fb - std::sys::pal::unix::thread::Thread::new::thread_start::hecd789c0696ca351
                               at /rustc/a77322c16f188402fa22a5e87100acce42433cbc/library/std/src/sys/pal/unix/thread.rs:108:17
  93:     0x7f35d014755a - <unknown>
  94:     0x7f35d01c4a3c - <unknown>
  95:                0x0 - <unknown>

note: it seems that this compiler `1.79.0-nightly (a77322c16 2024-04-02)` is outdated, a newer nightly should have been released in the mean time
  |
  = note: please consider running `rustup update nightly` to update the nightly channel and check if this problem still persists
  = note: if the problem still persists, 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 1.79.0-nightly (a77322c16 2024-04-02) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [typeck] type-checking `main::{constant#0}`
#1 [check_match] match-checking `main::{constant#0}`
#2 [mir_built] building MIR for `main::{constant#0}`
#3 [mir_const_qualif] const checking `main::{constant#0}`
#4 [mir_promoted] promoting constants in MIR for `main::{constant#0}`
#5 [mir_borrowck] borrow-checking `main::{constant#0}`
#6 [mir_drops_elaborated_and_const_checked] elaborating drops for `main::{constant#0}`
#7 [mir_for_ctfe] caching mir of `main::{constant#0}` for CTFE
#8 [eval_to_allocation_raw] const-evaluating + checking `main::{constant#0}`
#9 [eval_to_valtree] evaluating type-level constant
#10 [typeck] type-checking `main`
#11 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 1 previous error

[matthiaskrgr]

bisects to #121208 cc @nnethercote

[compiler-errors]

Oh no.... we don't check closure args for wf :(

[nnethercote]

I think this is case where #121208 exposed a latent bug? Which is a good thing.