ICE erroneous constant missed by mono item collection #149035
Description
Code
rustc -Zcrate-attr=feature(generic_const_exprs) -C link-dead-code=true -Zcrate-attr=feature(min_generic_const_args)
const L : usize = 4;
trait Print<const N : usize> {
fn print() -> usize { N }
}
struct Printer;
impl Print<L> for Printer {}
fn main() {}Meta
rustc --version --verbose:
rustc 1.93.0-nightly (518b42830 2025-11-16)
binary: rustc
commit-hash: 518b428304e0008859cb1fd81d1ac20efb2a064a
commit-date: 2025-11-16
host: x86_64-unknown-linux-gnu
release: 1.93.0-nightly
LLVM version: 21.1.5
Error output
warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
--> <crate attribute>: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
warning: the feature `min_generic_const_args` is incomplete and may not be safe to use and/or cause compiler crashes
--> <crate attribute>:1:12
|
1 | #![feature(min_generic_const_args)]
| ^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #132980 <https://github.com/rust-lang/rust/issues/132980> for more information
warning: constant `L` is never used
--> code.rs:1:7
|
1 | const L : usize = 4;
| ^
|
= note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
warning: trait `Print` is never used
--> code.rs:2:7
|
2 | trait Print<const N : usize> {
| ^^^^^
warning: struct `Printer` is never constructed
--> code.rs:5:8
|
5 | struct Printer;
| ^^^^^^^
thread 'rustc' (3665443) panicked at /rustc-dev/518b428304e0008859cb1fd81d1ac20efb2a064a/compiler/rustc_codegen_ssa/src/mir/constant.rs:28:14:
erroneous constant missed by mono item collection: Reported(ReportedErrorInfo { error: ErrorGuaranteed(()), allowed_in_infallible: true }, no-location (#0))
stack backtrace:
0: 0x7f47bcd35b33 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h5ae4ae86875c00e9
1: 0x7f47bd401d9c - core::fmt::write::he58289da8ad88ac4
2: 0x7f47bcceb0b6 - std::io::Write::write_fmt::ha47e198308c7c52d
3: 0x7f47bcd0233c - std::panicking::default_hook::{{closure}}::h6b3da92cff9dfda6
4: 0x7f47bcd01e93 - std::panicking::default_hook::hc2cfe13e40265481
5: 0x7f47bbd3fbf7 - std[d45af2a1259e8800]::panicking::update_hook::<alloc[58b5be5fbc54de9e]::boxed::Box<rustc_driver_impl[d2f42e81b9c37b75]::install_ice_hook::{closure#1}>>::{closure#0}
6: 0x7f47bcd026f2 - std::panicking::panic_with_hook::h2172996bacdba2d7
7: 0x7f47bcd02488 - std::panicking::panic_handler::{{closure}}::hc36cea0dc92c48aa
8: 0x7f47bccfc3f9 - std::sys::backtrace::__rust_end_short_backtrace::hd4b38282c54e463b
9: 0x7f47bccdd6dd - __rustc[f20bc1530c389e91]::rust_begin_unwind
10: 0x7f47b9c9c23c - core::panicking::panic_fmt::hda6de8e6488d2e11
11: 0x7f47b9793ff2 - core::result::unwrap_failed::hfa5a6fd21b66aec5
12: 0x7f47bdde434b - <rustc_codegen_ssa[8d127be4e78c2d4d]::mir::FunctionCx<rustc_codegen_llvm[a7a5928f7cc8b2e9]::builder::GenericBuilder<rustc_codegen_llvm[a7a5928f7cc8b2e9]::context::FullCx>>>::codegen_operand
13: 0x7f47be849623 - rustc_codegen_ssa[8d127be4e78c2d4d]::mir::codegen_mir::<rustc_codegen_llvm[a7a5928f7cc8b2e9]::builder::GenericBuilder<rustc_codegen_llvm[a7a5928f7cc8b2e9]::context::FullCx>>
14: 0x7f47bd545685 - rustc_codegen_llvm[a7a5928f7cc8b2e9]::base::compile_codegen_unit::module_codegen
15: 0x7f47be7f96df - <rustc_codegen_llvm[a7a5928f7cc8b2e9]::LlvmCodegenBackend as rustc_codegen_ssa[8d127be4e78c2d4d]::traits::backend::ExtraBackendMethods>::compile_codegen_unit
16: 0x7f47be7f53b6 - rustc_codegen_ssa[8d127be4e78c2d4d]::base::codegen_crate::<rustc_codegen_llvm[a7a5928f7cc8b2e9]::LlvmCodegenBackend>
17: 0x7f47be7f3933 - <rustc_codegen_llvm[a7a5928f7cc8b2e9]::LlvmCodegenBackend as rustc_codegen_ssa[8d127be4e78c2d4d]::traits::backend::CodegenBackend>::codegen_crate
18: 0x7f47be7415c8 - <rustc_interface[67c0c783642d6c76]::queries::Linker>::codegen_and_build_linker
19: 0x7f47be73ec58 - <rustc_interface[67c0c783642d6c76]::passes::create_and_enter_global_ctxt<core[7c9280adad8818af]::option::Option<rustc_interface[67c0c783642d6c76]::queries::Linker>, rustc_driver_impl[d2f42e81b9c37b75]::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core[7c9280adad8818af]::ops::function::FnOnce<(&rustc_session[54c87533a8d99824]::session::Session, rustc_middle[65c3dfc665d99b31]::ty::context::CurrentGcx, alloc[58b5be5fbc54de9e]::sync::Arc<rustc_data_structures[7b18bb195bd0e66b]::jobserver::Proxy>, &std[d45af2a1259e8800]::sync::once_lock::OnceLock<rustc_middle[65c3dfc665d99b31]::ty::context::GlobalCtxt>, &rustc_data_structures[7b18bb195bd0e66b]::sync::worker_local::WorkerLocal<rustc_middle[65c3dfc665d99b31]::arena::Arena>, &rustc_data_structures[7b18bb195bd0e66b]::sync::worker_local::WorkerLocal<rustc_hir[afdf7e16091c21f7]::Arena>, rustc_driver_impl[d2f42e81b9c37b75]::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0}
20: 0x7f47be5d6105 - rustc_interface[67c0c783642d6c76]::interface::run_compiler::<(), rustc_driver_impl[d2f42e81b9c37b75]::run_compiler::{closure#0}>::{closure#1}
21: 0x7f47be52afba - std[d45af2a1259e8800]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[67c0c783642d6c76]::util::run_in_thread_with_globals<rustc_interface[67c0c783642d6c76]::util::run_in_thread_pool_with_globals<rustc_interface[67c0c783642d6c76]::interface::run_compiler<(), rustc_driver_impl[d2f42e81b9c37b75]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
22: 0x7f47be52aca8 - <<std[d45af2a1259e8800]::thread::Builder>::spawn_unchecked_<rustc_interface[67c0c783642d6c76]::util::run_in_thread_with_globals<rustc_interface[67c0c783642d6c76]::util::run_in_thread_pool_with_globals<rustc_interface[67c0c783642d6c76]::interface::run_compiler<(), rustc_driver_impl[d2f42e81b9c37b75]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[7c9280adad8818af]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
23: 0x7f47be5309af - std::sys::thread::unix::Thread::new::thread_start::h544843a2b008d4a8
24: 0x7f47b7e969cb - <unknown>
25: 0x7f47b7f1aa0c - <unknown>
26: 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: please make sure that you have updated to the latest nightly
note: please attach the file at `/home/matthias/vcs/github/CRED/rustc-ice-2025-11-17T18_35_47-3665425.txt` to your bug report
note: compiler flags: -C link-dead-code=true -Z crate-attr=feature(generic_const_exprs) -C link-dead-code=true -Z crate-attr=feature(min_generic_const_args)
query stack during panic:
end of query stack
warning: 5 warnings emitted
note: no errors encountered even though delayed bugs were created
note: those delayed bugs will now be shown as internal compiler errors
error: internal compiler error: cannot call const_of_item on a non-type_const
--> code.rs:1:1
|
1 | const L : usize = 4;
| ^^^^^^^^^^^^^^^
|
note: delayed at compiler/rustc_hir_analysis/src/collect.rs:1615:31
0: <rustc_errors::DiagCtxtInner>::emit_diagnostic
1: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
2: <rustc_span::ErrorGuaranteed as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee
3: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, &str>
4: rustc_hir_analysis::collect::const_of_item
5: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::const_of_item::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 8]>>
6: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefIdCache<rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
7: rustc_query_impl::query_impl::const_of_item::get_query_non_incr::__rust_end_short_backtrace
8: rustc_traits::normalize_projection_ty::normalize_canonicalized_free_alias
9: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::normalize_canonicalized_free_alias::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 8]>>
10: <rustc_query_impl::query_impl::normalize_canonicalized_free_alias::dynamic_query::{closure#2} as core::ops::function::FnOnce<(rustc_middle::ty::context::TyCtxt, rustc_type_ir::canonical::CanonicalQueryInput<rustc_middle::ty::context::TyCtxt, rustc_middle::ty::ParamEnvAnd<rustc_type_ir::predicate::AliasTerm<rustc_middle::ty::context::TyCtxt>>>)>>::call_once
11: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_type_ir::canonical::CanonicalQueryInput<rustc_middle::ty::context::TyCtxt, rustc_middle::ty::ParamEnvAnd<rustc_type_ir::predicate::AliasTerm<rustc_middle::ty::context::TyCtxt>>>, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
12: rustc_query_impl::query_impl::normalize_canonicalized_free_alias::get_query_non_incr::__rust_end_short_backtrace
13: <rustc_trait_selection::traits::query::normalize::QueryNormalizer>::try_fold_free_or_assoc
14: <rustc_trait_selection::traits::query::normalize::QueryNormalizer as rustc_type_ir::fold::FallibleTypeFolder<rustc_middle::ty::context::TyCtxt>>::try_fold_const
15: <rustc_traits::normalize_erasing_regions::provide::{closure#0} as core::ops::function::FnOnce<(rustc_middle::ty::context::TyCtxt, rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::generic_args::GenericArg>)>>::call_once
16: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::try_normalize_generic_arg_after_erasing_regions::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 8]>>
17: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::generic_args::GenericArg>, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
18: rustc_query_impl::query_impl::try_normalize_generic_arg_after_erasing_regions::get_query_non_incr::__rust_end_short_backtrace
19: <rustc_middle::ty::normalize_erasing_regions::NormalizeAfterErasingRegionsFolder>::normalize_generic_arg_after_erasing_regions
20: <rustc_middle::ty::normalize_erasing_regions::NormalizeAfterErasingRegionsFolder as rustc_type_ir::fold::TypeFolder<rustc_middle::ty::context::TyCtxt>>::fold_const
21: <&rustc_middle::ty::list::RawList<(), rustc_middle::ty::generic_args::GenericArg> as rustc_type_ir::fold::TypeFoldable<rustc_middle::ty::context::TyCtxt>>::fold_with::<rustc_middle::ty::normalize_erasing_regions::NormalizeAfterErasingRegionsFolder>
22: rustc_monomorphize::collector::collect_roots
23: rustc_monomorphize::partitioning::collect_and_partition_mono_items
24: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::collect_and_partition_mono_items::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 24]>>
25: <rustc_query_impl::query_impl::collect_and_partition_mono_items::dynamic_query::{closure#2} as core::ops::function::FnOnce<(rustc_middle::ty::context::TyCtxt, ())>>::call_once
26: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 24]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
27: rustc_query_impl::query_impl::collect_and_partition_mono_items::get_query_non_incr::__rust_end_short_backtrace
28: rustc_codegen_ssa::base::codegen_crate::<rustc_codegen_llvm::LlvmCodegenBackend>
29: <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_ssa::traits::backend::CodegenBackend>::codegen_crate
30: <rustc_interface::queries::Linker>::codegen_and_build_linker
31: <rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core::ops::function::FnOnce<(&rustc_session::session::Session, rustc_middle::ty::context::CurrentGcx, alloc::sync::Arc<rustc_data_structures::jobserver::Proxy>, &std::sync::once_lock::OnceLock<rustc_middle::ty::context::GlobalCtxt>, &rustc_data_structures::sync::worker_local::WorkerLocal<rustc_middle::arena::Arena>, &rustc_data_structures::sync::worker_local::WorkerLocal<rustc_hir::Arena>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0}
32: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
33: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
34: <<std::thread::Builder>::spawn_unchecked_<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
35: std::sys::thread::unix::Thread::new::thread_start
36: <unknown>
37: <unknown>
--> code.rs:1:1
|
1 | const L : usize = 4;
| ^^^^^^^^^^^^^^^
error: internal compiler error: Unevaluated `ty::Const` in MIR body
|
= note: delayed at /rustc-dev/518b428304e0008859cb1fd81d1ac20efb2a064a/compiler/rustc_middle/src/mir/consts.rs:363:35
0: <rustc_errors::DiagCtxtInner>::emit_diagnostic
1: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
2: <rustc_span::ErrorGuaranteed as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee
3: <rustc_errors::DiagCtxtHandle>::delayed_bug::<&str>
4: rustc_monomorphize::collector::items_of_instance
5: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::items_of_instance::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 32]>>
6: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<(rustc_middle::ty::instance::Instance, rustc_middle::mir::mono::CollectionMode), rustc_middle::query::erase::Erased<[u8; 32]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
7: rustc_query_impl::query_impl::items_of_instance::get_query_non_incr::__rust_end_short_backtrace
8: rustc_monomorphize::collector::collect_items_rec
9: rustc_monomorphize::collector::collect_crate_mono_items::{closure#1}::{closure#0}
10: rustc_monomorphize::partitioning::collect_and_partition_mono_items
11: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::collect_and_partition_mono_items::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 24]>>
12: <rustc_query_impl::query_impl::collect_and_partition_mono_items::dynamic_query::{closure#2} as core::ops::function::FnOnce<(rustc_middle::ty::context::TyCtxt, ())>>::call_once
13: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 24]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
14: rustc_query_impl::query_impl::collect_and_partition_mono_items::get_query_non_incr::__rust_end_short_backtrace
15: rustc_codegen_ssa::base::codegen_crate::<rustc_codegen_llvm::LlvmCodegenBackend>
16: <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_ssa::traits::backend::CodegenBackend>::codegen_crate
17: <rustc_interface::queries::Linker>::codegen_and_build_linker
18: <rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core::ops::function::FnOnce<(&rustc_session::session::Session, rustc_middle::ty::context::CurrentGcx, alloc::sync::Arc<rustc_data_structures::jobserver::Proxy>, &std::sync::once_lock::OnceLock<rustc_middle::ty::context::GlobalCtxt>, &rustc_data_structures::sync::worker_local::WorkerLocal<rustc_middle::arena::Arena>, &rustc_data_structures::sync::worker_local::WorkerLocal<rustc_hir::Arena>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0}
19: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
20: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
21: <<std::thread::Builder>::spawn_unchecked_<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
22: std::sys::thread::unix::Thread::new::thread_start
23: <unknown>
24: <unknown>
error: internal compiler error: Unevaluated `ty::Const` in MIR body
|
= note: delayed at /rustc-dev/518b428304e0008859cb1fd81d1ac20efb2a064a/compiler/rustc_middle/src/mir/consts.rs:363:35
0: <rustc_errors::DiagCtxtInner>::emit_diagnostic
1: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
2: <rustc_span::ErrorGuaranteed as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee
3: <rustc_codegen_ssa::mir::FunctionCx<rustc_codegen_llvm::builder::GenericBuilder<rustc_codegen_llvm::context::FullCx>>>::codegen_operand
4: rustc_codegen_ssa::mir::codegen_mir::<rustc_codegen_llvm::builder::GenericBuilder<rustc_codegen_llvm::context::FullCx>>
5: rustc_codegen_llvm::base::compile_codegen_unit::module_codegen
6: <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_ssa::traits::backend::ExtraBackendMethods>::compile_codegen_unit
7: rustc_codegen_ssa::base::codegen_crate::<rustc_codegen_llvm::LlvmCodegenBackend>
8: <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_ssa::traits::backend::CodegenBackend>::codegen_crate
9: <rustc_interface::queries::Linker>::codegen_and_build_linker
10: <rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core::ops::function::FnOnce<(&rustc_session::session::Session, rustc_middle::ty::context::CurrentGcx, alloc::sync::Arc<rustc_data_structures::jobserver::Proxy>, &std::sync::once_lock::OnceLock<rustc_middle::ty::context::GlobalCtxt>, &rustc_data_structures::sync::worker_local::WorkerLocal<rustc_middle::arena::Arena>, &rustc_data_structures::sync::worker_local::WorkerLocal<rustc_hir::Arena>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0}
11: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
12: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
13: <<std::thread::Builder>::spawn_unchecked_<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
14: std::sys::thread::unix::Thread::new::thread_start
15: <unknown>
16: <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: please make sure that you have updated to the latest nightly
note: please attach the file at `/home/matthias/vcs/github/CRED/rustc-ice-2025-11-17T18_35_47-3665425.txt` to your bug report
note: compiler flags: -C link-dead-code=true -Z crate-attr=feature(generic_const_exprs) -C link-dead-code=true -Z crate-attr=feature(min_generic_const_args)
query stack during panic:
end of query stack
Backtrace
<backtrace>