ICE: `expected type of closure body to be a closure or coroutine`

[matthiaskrgr]

Code

rustc --edition=2021 code.rs

#![feature(generic_const_exprs)]
fn f<T>(
    data: &[(); {
         let f: F = async { 1 };

         1
     }],
) -> impl Iterator<Item = SubAssign> {
}

Meta

rustc --version --verbose:

rustc 1.73.0-nightly (4c8bb79d9 2023-07-15)
binary: rustc
commit-hash: 4c8bb79d9f565115637cc6da739f8389e79f3a29
commit-date: 2023-07-15
host: x86_64-unknown-linux-gnu
release: 1.73.0-nightly
LLVM version: 16.0.5

Error output

error[E0412]: cannot find type `F` in this scope
  --> treereduce.out:4:17
   |
4  |          let f: F = async { 1 };
   |                 ^
   |
  ::: /home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ops/function.rs:76:1
   |
76 | pub trait Fn<Args: Tuple>: FnMut<Args> {
   | -------------------------------------- similarly named trait `Fn` defined here
   |
help: a trait with a similar name exists
   |
4  |          let f: Fn = async { 1 };
   |                 ~~
help: you might be missing a type parameter
   |
2  | fn f<T, F>(
   |       +++

error[E0412]: cannot find type `SubAssign` in this scope
 --> treereduce.out:8:27
  |
8 | ) -> impl Iterator<Item = SubAssign> {
  |                           ^^^^^^^^^ not found in this scope
  |
help: consider importing one of these items
  |
2 + use core::ops::SubAssign;
  |
2 + use std::ops::SubAssign;
  |

warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
 --> treereduce.out:1:12
  |
1 | #![feature(generic_const_exprs)]
  |            ^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information
  = note: `#[warn(incomplete_features)]` on by default

error[E0601]: `main` function not found in crate `treereduce`
 --> treereduce.out:9:2
  |
9 | }
  |  ^ consider adding a `main` function to `treereduce.out`

warning: unused variable: `data`
 --> treereduce.out:3:5
  |
3 |     data: &[(); {
  |     ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
  |
  = note: `#[warn(unused_variables)]` on by default

Backtrace

error: internal compiler error: compiler/rustc_mir_build/src/build/mod.rs:634:22: expected closure or generator, found {type error}

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/compiler/rustc_errors/src/lib.rs:1651:9
stack backtrace:
   0:     0x7f6d73f641e1 - std::backtrace_rs::backtrace::libunwind::trace::h3b5c50f24cf4b35a
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f6d73f641e1 - std::backtrace_rs::backtrace::trace_unsynchronized::he026a26ead582316
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f6d73f641e1 - std::sys_common::backtrace::_print_fmt::h76fd67678968a4e3
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f6d73f641e1 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hdd83524e3f3c2be2
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f6d73fca19c - core::fmt::rt::Argument::fmt::h654276e7f109452e
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/core/src/fmt/rt.rs:138:9
   5:     0x7f6d73fca19c - core::fmt::write::h138407e966f7b43b
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/core/src/fmt/mod.rs:1094:21
   6:     0x7f6d73f56b8e - std::io::Write::write_fmt::h2424dcece48dafda
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/io/mod.rs:1714:15
   7:     0x7f6d73f63ff5 - std::sys_common::backtrace::_print::hed0bf89a99fb894c
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f6d73f63ff5 - std::sys_common::backtrace::print::h247f5c941c9353a5
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f6d73f66da3 - std::panicking::default_hook::{{closure}}::hcccd6b964b717049
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/panicking.rs:269:22
  10:     0x7f6d73f66b34 - std::panicking::default_hook::hce795b61120bca6d
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/panicking.rs:288:9
  11:     0x7f6d771f827b - <rustc_driver_impl[36a7eaa3807b03c1]::install_ice_hook::{closure#0} as core[81c8fe8a09de0f06]::ops::function::FnOnce<(&core[81c8fe8a09de0f06]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
  12:     0x7f6d73f675ce - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h3187784b6c983a99
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/alloc/src/boxed.rs:2021:9
  13:     0x7f6d73f675ce - std::panicking::rust_panic_with_hook::h46c9d18986d08847
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/panicking.rs:709:13
  14:     0x7f6d77789ca1 - std[fa39155a576d62c5]::panicking::begin_panic::<rustc_errors[bc298e2df4c98b78]::ExplicitBug>::{closure#0}
  15:     0x7f6d77789896 - std[fa39155a576d62c5]::sys_common::backtrace::__rust_end_short_backtrace::<std[fa39155a576d62c5]::panicking::begin_panic<rustc_errors[bc298e2df4c98b78]::ExplicitBug>::{closure#0}, !>
  16:     0x7f6d777fba86 - std[fa39155a576d62c5]::panicking::begin_panic::<rustc_errors[bc298e2df4c98b78]::ExplicitBug>
  17:     0x7f6d777f9154 - <rustc_errors[bc298e2df4c98b78]::HandlerInner>::bug::<alloc[2889214108738437]::string::String>
  18:     0x7f6d777f8f68 - <rustc_errors[bc298e2df4c98b78]::Handler>::bug::<alloc[2889214108738437]::string::String>
  19:     0x7f6d7771fcbc - rustc_middle[bafd45fe52eb4faf]::util::bug::opt_span_bug_fmt::<rustc_span[d4de8c39017ea598]::span_encoding::Span>::{closure#0}
  20:     0x7f6d7771afba - rustc_middle[bafd45fe52eb4faf]::ty::context::tls::with_opt::<rustc_middle[bafd45fe52eb4faf]::util::bug::opt_span_bug_fmt<rustc_span[d4de8c39017ea598]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  21:     0x7f6d7771af88 - rustc_middle[bafd45fe52eb4faf]::ty::context::tls::with_context_opt::<rustc_middle[bafd45fe52eb4faf]::ty::context::tls::with_opt<rustc_middle[bafd45fe52eb4faf]::util::bug::opt_span_bug_fmt<rustc_span[d4de8c39017ea598]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  22:     0x7f6d75fcf380 - rustc_middle[bafd45fe52eb4faf]::util::bug::bug_fmt
  23:     0x7f6d7782c0c5 - rustc_mir_build[cab3407ed0d16561]::build::construct_error
  24:     0x7f6d7617a670 - rustc_mir_build[cab3407ed0d16561]::build::mir_built
  25:     0x7f6d752634ac - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::mir_built::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 8usize]>>
  26:     0x7f6d7526348e - <rustc_query_impl[f1760b35ee71e15a]::query_impl::mir_built::dynamic_query::{closure#2} as core[81c8fe8a09de0f06]::ops::function::FnOnce<(rustc_middle[bafd45fe52eb4faf]::ty::context::TyCtxt, rustc_span[d4de8c39017ea598]::def_id::LocalDefId)>>::call_once
  27:     0x7f6d7533caad - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::VecCache<rustc_span[d4de8c39017ea598]::def_id::LocalDefId, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
  28:     0x7f6d76b2aa2f - rustc_query_impl[f1760b35ee71e15a]::query_impl::mir_built::get_query_non_incr::__rust_end_short_backtrace
  29:     0x7f6d76377576 - rustc_mir_transform[7f2cf7a5dd3bd755]::check_unsafety::unsafety_check_result
  30:     0x7f6d752634ec - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::unsafety_check_result::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 8usize]>>
  31:     0x7f6d752634ce - <rustc_query_impl[f1760b35ee71e15a]::query_impl::unsafety_check_result::dynamic_query::{closure#2} as core[81c8fe8a09de0f06]::ops::function::FnOnce<(rustc_middle[bafd45fe52eb4faf]::ty::context::TyCtxt, rustc_span[d4de8c39017ea598]::def_id::LocalDefId)>>::call_once
  32:     0x7f6d7533caad - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::VecCache<rustc_span[d4de8c39017ea598]::def_id::LocalDefId, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
  33:     0x7f6d76b2d0ff - rustc_query_impl[f1760b35ee71e15a]::query_impl::unsafety_check_result::get_query_non_incr::__rust_end_short_backtrace
  34:     0x7f6d763b1368 - rustc_mir_transform[7f2cf7a5dd3bd755]::mir_const
  35:     0x7f6d7527d72e - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::mir_const::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 8usize]>>
  36:     0x7f6d7527d6fe - <rustc_query_impl[f1760b35ee71e15a]::query_impl::mir_const::dynamic_query::{closure#2} as core[81c8fe8a09de0f06]::ops::function::FnOnce<(rustc_middle[bafd45fe52eb4faf]::ty::context::TyCtxt, rustc_span[d4de8c39017ea598]::def_id::LocalDefId)>>::call_once
  37:     0x7f6d7533caad - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::VecCache<rustc_span[d4de8c39017ea598]::def_id::LocalDefId, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
  38:     0x7f6d76b51d8f - rustc_query_impl[f1760b35ee71e15a]::query_impl::mir_const::get_query_non_incr::__rust_end_short_backtrace
  39:     0x7f6d7536bda9 - rustc_mir_transform[7f2cf7a5dd3bd755]::mir_promoted
  40:     0x7f6d7536bc01 - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::mir_promoted::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 16usize]>>
  41:     0x7f6d7585383d - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::VecCache<rustc_span[d4de8c39017ea598]::def_id::LocalDefId, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
  42:     0x7f6d76b51e85 - rustc_query_impl[f1760b35ee71e15a]::query_impl::mir_promoted::get_query_non_incr::__rust_end_short_backtrace
  43:     0x7f6d758827fc - rustc_borrowck[6067ff99a16e49f6]::mir_borrowck
  44:     0x7f6d7527d6ce - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 8usize]>>
  45:     0x7f6d7527d69e - <rustc_query_impl[f1760b35ee71e15a]::query_impl::mir_borrowck::dynamic_query::{closure#2} as core[81c8fe8a09de0f06]::ops::function::FnOnce<(rustc_middle[bafd45fe52eb4faf]::ty::context::TyCtxt, rustc_span[d4de8c39017ea598]::def_id::LocalDefId)>>::call_once
  46:     0x7f6d7533caad - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::VecCache<rustc_span[d4de8c39017ea598]::def_id::LocalDefId, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
  47:     0x7f6d76b5c63f - rustc_query_impl[f1760b35ee71e15a]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
  48:     0x7f6d76838e4f - <rustc_hir_analysis[51ced00d18f9db10]::collect::type_of::opaque::RpitConstraintChecker>::check
  49:     0x7f6d76838dbc - rustc_hir[98ac82fdf278d239]::intravisit::walk_block::<rustc_hir_analysis[51ced00d18f9db10]::collect::type_of::opaque::RpitConstraintChecker>
  50:     0x7f6d768765a1 - rustc_hir[98ac82fdf278d239]::intravisit::walk_fn::<rustc_hir_analysis[51ced00d18f9db10]::collect::type_of::opaque::RpitConstraintChecker>
  51:     0x7f6d76373c1a - rustc_hir[98ac82fdf278d239]::intravisit::walk_item::<rustc_hir_analysis[51ced00d18f9db10]::collect::type_of::opaque::RpitConstraintChecker>
  52:     0x7f6d763737bb - rustc_hir_analysis[51ced00d18f9db10]::collect::type_of::opaque::find_opaque_ty_constraints_for_rpit
  53:     0x7f6d763702bd - rustc_hir_analysis[51ced00d18f9db10]::collect::type_of::type_of
  54:     0x7f6d7534efd3 - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::type_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 8usize]>>
  55:     0x7f6d7534ef90 - <rustc_query_impl[f1760b35ee71e15a]::query_impl::type_of::dynamic_query::{closure#2} as core[81c8fe8a09de0f06]::ops::function::FnOnce<(rustc_middle[bafd45fe52eb4faf]::ty::context::TyCtxt, rustc_span[d4de8c39017ea598]::def_id::DefId)>>::call_once
  56:     0x7f6d7526e175 - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::DefaultCache<rustc_span[d4de8c39017ea598]::def_id::DefId, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
  57:     0x7f6d76b68b61 - rustc_query_impl[f1760b35ee71e15a]::query_impl::type_of::get_query_non_incr::__rust_end_short_backtrace
  58:     0x7f6d761b0080 - rustc_middle[bafd45fe52eb4faf]::query::plumbing::query_get_at::<rustc_query_system[a39b5eca44b3ed3c]::query::caches::DefaultCache<rustc_span[d4de8c39017ea598]::def_id::DefId, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 8usize]>>>
  59:     0x7f6d761a9edc - rustc_hir_analysis[51ced00d18f9db10]::check::check::check_mod_item_types
  60:     0x7f6d75f5db6c - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::check_mod_item_types::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 0usize]>>
  61:     0x7f6d75f5db4e - <rustc_query_impl[f1760b35ee71e15a]::query_impl::check_mod_item_types::dynamic_query::{closure#2} as core[81c8fe8a09de0f06]::ops::function::FnOnce<(rustc_middle[bafd45fe52eb4faf]::ty::context::TyCtxt, rustc_span[d4de8c39017ea598]::def_id::LocalDefId)>>::call_once
  62:     0x7f6d75b52b2f - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::VecCache<rustc_span[d4de8c39017ea598]::def_id::LocalDefId, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
  63:     0x7f6d76b2da22 - rustc_query_impl[f1760b35ee71e15a]::query_impl::check_mod_item_types::get_query_non_incr::__rust_end_short_backtrace
  64:     0x7f6d766af077 - <rustc_middle[bafd45fe52eb4faf]::hir::map::Map>::for_each_module::<rustc_hir_analysis[51ced00d18f9db10]::check_crate::{closure#6}::{closure#0}>
  65:     0x7f6d766ae2ed - <rustc_session[b1a5d361b73cfad9]::session::Session>::time::<(), rustc_hir_analysis[51ced00d18f9db10]::check_crate::{closure#6}>
  66:     0x7f6d766acf1a - rustc_hir_analysis[51ced00d18f9db10]::check_crate
  67:     0x7f6d766a433a - rustc_interface[b60702df0ae80ef4]::passes::analysis
  68:     0x7f6d7667fb3a - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 1usize]>>
  69:     0x7f6d7667fb29 - <rustc_query_impl[f1760b35ee71e15a]::query_impl::analysis::dynamic_query::{closure#2} as core[81c8fe8a09de0f06]::ops::function::FnOnce<(rustc_middle[bafd45fe52eb4faf]::ty::context::TyCtxt, ())>>::call_once
  70:     0x7f6d7685bc68 - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::SingleCache<rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
  71:     0x7f6d7685ba47 - rustc_query_impl[f1760b35ee71e15a]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  72:     0x7f6d7646e835 - <rustc_middle[bafd45fe52eb4faf]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[36a7eaa3807b03c1]::run_compiler::{closure#1}::{closure#2}::{closure#4}, core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>>
  73:     0x7f6d7646de62 - <rustc_interface[b60702df0ae80ef4]::interface::Compiler>::enter::<rustc_driver_impl[36a7eaa3807b03c1]::run_compiler::{closure#1}::{closure#2}, core[81c8fe8a09de0f06]::result::Result<core[81c8fe8a09de0f06]::option::Option<rustc_interface[b60702df0ae80ef4]::queries::Linker>, rustc_span[d4de8c39017ea598]::ErrorGuaranteed>>
  74:     0x7f6d764671d5 - rustc_span[d4de8c39017ea598]::set_source_map::<core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>, rustc_interface[b60702df0ae80ef4]::interface::run_compiler<core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>, rustc_driver_impl[36a7eaa3807b03c1]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  75:     0x7f6d76466c46 - <scoped_tls[121ecede58d5c05f]::ScopedKey<rustc_span[d4de8c39017ea598]::SessionGlobals>>::set::<rustc_interface[b60702df0ae80ef4]::interface::run_compiler<core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>, rustc_driver_impl[36a7eaa3807b03c1]::run_compiler::{closure#1}>::{closure#0}, core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>>
  76:     0x7f6d7646620c - std[fa39155a576d62c5]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[b60702df0ae80ef4]::util::run_in_thread_pool_with_globals<rustc_interface[b60702df0ae80ef4]::interface::run_compiler<core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>, rustc_driver_impl[36a7eaa3807b03c1]::run_compiler::{closure#1}>::{closure#0}, core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>>
  77:     0x7f6d76465fce - <<std[fa39155a576d62c5]::thread::Builder>::spawn_unchecked_<rustc_interface[b60702df0ae80ef4]::util::run_in_thread_pool_with_globals<rustc_interface[b60702df0ae80ef4]::interface::run_compiler<core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>, rustc_driver_impl[36a7eaa3807b03c1]::run_compiler::{closure#1}>::{closure#0}, core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>>::{closure#1} as core[81c8fe8a09de0f06]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  78:     0x7f6d73f71c55 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h83f49025b00909a5
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/alloc/src/boxed.rs:2007:9
  79:     0x7f6d73f71c55 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h21b0d4679eed4e05
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/alloc/src/boxed.rs:2007:9
  80:     0x7f6d73f71c55 - std::sys::unix::thread::Thread::new::thread_start::h030641e4e4790460
                               at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/sys/unix/thread.rs:108:17
  81:     0x7f6d73d0444b - <unknown>
  82:     0x7f6d73d87e40 - <unknown>
  83:                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 1.73.0-nightly (4c8bb79d9 2023-07-15) running on x86_64-unknown-linux-gnu

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

Some errors have detailed explanations: E0412, E0601.
For more information about an error, try `rustc --explain E0412`.

[matthiaskrgr]

Regression in nightly-2022-11-25

commit[0] 2022-11-23: Auto merge of #104410 - WaffleLapkin:unregress, r=estebank
commit[1] 2022-11-24: Auto merge of #104507 - WaffleLapkin:asderefsyou, r=wesleywiser
commit[2] 2022-11-24: Auto merge of #104610 - ouz-a:revert-overflow, r=compiler-errors
commit[3] 2022-11-24: Auto merge of #103808 - cjgillot:vec-cache, r=TaKO8Ki
commit[4] 2022-11-24: Auto merge of #104809 - matthiaskrgr:rollup-8abjdwh, r=matthiaskrgr
commit[5] 2022-11-24: Auto merge of #104321 - Swatinem:async-gen, r=oli-obk // probably this one?
commit[6] 2022-11-24: Auto merge of #103693 - HKalbasi:master, r=oli-obk