stack backtrace: 0: 0x7b706be05953 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h1d9a860939142303 1: 0x7b706c601fc4 - core::fmt::write::h4cde2f6e6eca889f 2: 0x7b706bdba5f1 - std::io::Write::write_fmt::hbbb02a45894db6e0 3: 0x7b706bdcb5d2 - std::sys::backtrace::BacktraceLock::print::hfcdaff63564fa703 4: 0x7b706bdd1539 - std::panicking::default_hook::{{closure}}::hcc588fdbd9e0eddf 5: 0x7b706bdd1063 - std::panicking::default_hook::h21841b6cba7fa436 6: 0x7b706adf5bd7 - std[6c96415bc1a38016]::panicking::update_hook::<alloc[c6e2df4d00e1f0b6]::boxed::Box<rustc_driver_impl[459800387efcc559]::install_ice_hook::{closure#1}>>::{closure#0} 7: 0x7b706bdd195f - std::panicking::panic_with_hook::hedf05123aa8b61bb 8: 0x7b706bdd171a - std::panicking::panic_handler::{{closure}}::h956f7c5977a5ec91 9: 0x7b706bdcb709 - std::sys::backtrace::__rust_end_short_backtrace::h743f27db24eccdeb 10: 0x7b706bdac05d - __rustc[dd6286f626093c3b]::rust_begin_unwind 11: 0x7b70690928c0 - core::panicking::panic_fmt::h4f3e86766fc85179 12: 0x7b706e06a7db - <rustc_hir_typeck[ec5df76106ecc9bb]::fn_ctxt::FnCtxt>::precedence::{closure#0}.llvm.14209757712867987235.cold 13: 0x7b706ca76c6d - <rustc_hir[f64a1fb3a7caff8d]::hir::Expr>::precedence 14: 0x7b706b1050c5 - <rustc_hir_typeck[ec5df76106ecc9bb]::fn_ctxt::FnCtxt>::suggest_deref_ref_or_into 15: 0x7b706b0cc144 - <rustc_hir_typeck[ec5df76106ecc9bb]::fn_ctxt::FnCtxt>::emit_type_mismatch_suggestions 16: 0x7b706b0c7b63 - <rustc_hir_typeck[ec5df76106ecc9bb]::fn_ctxt::FnCtxt>::emit_coerce_suggestions 17: 0x7b706ca70ab7 - rustc_hir_typeck[ec5df76106ecc9bb]::typeck_with_inspect::{closure#0} 18: 0x7b706ca662b6 - rustc_query_impl[8ceca73aa722394f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ceca73aa722394f]::query_impl::typeck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 8usize]>> 19: 0x7b706c7e74c4 - rustc_query_system[44f2cb83942a7389]::query::plumbing::try_execute_query::<rustc_query_impl[8ceca73aa722394f]::DynamicConfig<rustc_data_structures[e568e5fb65a8620a]::vec_cache::VecCache<rustc_span[9408016a182fdcc0]::def_id::LocalDefId, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[44f2cb83942a7389]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[8ceca73aa722394f]::plumbing::QueryCtxt, false> 20: 0x7b706c7e6e49 - rustc_query_impl[8ceca73aa722394f]::query_impl::typeck::get_query_non_incr::__rust_end_short_backtrace 21: 0x7b706d0e8a3a - rustc_mir_build[a421b28dce73fa3]::thir::pattern::check_match::check_match 22: 0x7b706d0e7e1b - rustc_query_impl[8ceca73aa722394f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ceca73aa722394f]::query_impl::check_match::dynamic_query::{closure#2}::{closure#0}, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 1usize]>> 23: 0x7b706ce976ef - rustc_query_system[44f2cb83942a7389]::query::plumbing::try_execute_query::<rustc_query_impl[8ceca73aa722394f]::DynamicConfig<rustc_data_structures[e568e5fb65a8620a]::vec_cache::VecCache<rustc_span[9408016a182fdcc0]::def_id::LocalDefId, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[44f2cb83942a7389]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[8ceca73aa722394f]::plumbing::QueryCtxt, false> 24: 0x7b706ca07b89 - rustc_query_impl[8ceca73aa722394f]::query_impl::check_match::get_query_non_incr::__rust_end_short_backtrace 25: 0x7b706ca07c9a - rustc_mir_build[a421b28dce73fa3]::builder::build_mir 26: 0x7b706c607781 - rustc_query_impl[8ceca73aa722394f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ceca73aa722394f]::query_impl::mir_built::dynamic_query::{closure#2}::{closure#0}, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 8usize]>> 27: 0x7b706c7e74c4 - rustc_query_system[44f2cb83942a7389]::query::plumbing::try_execute_query::<rustc_query_impl[8ceca73aa722394f]::DynamicConfig<rustc_data_structures[e568e5fb65a8620a]::vec_cache::VecCache<rustc_span[9408016a182fdcc0]::def_id::LocalDefId, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[44f2cb83942a7389]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[8ceca73aa722394f]::plumbing::QueryCtxt, false> 28: 0x7b706c7e6f09 - rustc_query_impl[8ceca73aa722394f]::query_impl::mir_built::get_query_non_incr::__rust_end_short_backtrace 29: 0x7b706d129635 - rustc_mir_transform[ff5e13a6e501cd2c]::mir_const_qualif 30: 0x7b706d1295a9 - rustc_query_impl[8ceca73aa722394f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ceca73aa722394f]::query_impl::mir_const_qualif::dynamic_query::{closure#2}::{closure#0}, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 4usize]>> 31: 0x7b706d128a4b - rustc_query_system[44f2cb83942a7389]::query::plumbing::try_execute_query::<rustc_query_impl[8ceca73aa722394f]::DynamicConfig<rustc_query_system[44f2cb83942a7389]::query::caches::DefIdCache<rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 4usize]>>, false, false, false>, rustc_query_impl[8ceca73aa722394f]::plumbing::QueryCtxt, false> 32: 0x7b706d12878a - rustc_query_impl[8ceca73aa722394f]::query_impl::mir_const_qualif::get_query_non_incr::__rust_end_short_backtrace 33: 0x7b70697b6fdd - rustc_mir_transform[ff5e13a6e501cd2c]::mir_promoted 34: 0x7b706d088c56 - rustc_query_impl[8ceca73aa722394f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ceca73aa722394f]::query_impl::mir_promoted::dynamic_query::{closure#2}::{closure#0}, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 16usize]>> 35: 0x7b706d088f39 - rustc_query_system[44f2cb83942a7389]::query::plumbing::try_execute_query::<rustc_query_impl[8ceca73aa722394f]::DynamicConfig<rustc_data_structures[e568e5fb65a8620a]::vec_cache::VecCache<rustc_span[9408016a182fdcc0]::def_id::LocalDefId, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 16usize]>, rustc_query_system[44f2cb83942a7389]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[8ceca73aa722394f]::plumbing::QueryCtxt, false> 36: 0x7b706d088aa6 - rustc_query_impl[8ceca73aa722394f]::query_impl::mir_promoted::get_query_non_incr::__rust_end_short_backtrace 37: 0x7b706d7ae323 - rustc_borrowck[dd44c889f7481f64]::mir_borrowck 38: 0x7b706d7ae1dd - rustc_query_impl[8ceca73aa722394f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ceca73aa722394f]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 8usize]>> 39: 0x7b706c7e74c4 - rustc_query_system[44f2cb83942a7389]::query::plumbing::try_execute_query::<rustc_query_impl[8ceca73aa722394f]::DynamicConfig<rustc_data_structures[e568e5fb65a8620a]::vec_cache::VecCache<rustc_span[9408016a182fdcc0]::def_id::LocalDefId, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[44f2cb83942a7389]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[8ceca73aa722394f]::plumbing::QueryCtxt, false> 40: 0x7b706c7ebe09 - rustc_query_impl[8ceca73aa722394f]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace 41: 0x7b706d1705c9 - rustc_mir_transform[ff5e13a6e501cd2c]::mir_drops_elaborated_and_const_checked 42: 0x7b706d16fc59 - rustc_query_impl[8ceca73aa722394f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ceca73aa722394f]::query_impl::mir_drops_elaborated_and_const_checked::dynamic_query::{closure#2}::{closure#0}, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 8usize]>> 43: 0x7b706c7e74c4 - rustc_query_system[44f2cb83942a7389]::query::plumbing::try_execute_query::<rustc_query_impl[8ceca73aa722394f]::DynamicConfig<rustc_data_structures[e568e5fb65a8620a]::vec_cache::VecCache<rustc_span[9408016a182fdcc0]::def_id::LocalDefId, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[44f2cb83942a7389]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[8ceca73aa722394f]::plumbing::QueryCtxt, false> 44: 0x7b706c7e6c09 - rustc_query_impl[8ceca73aa722394f]::query_impl::mir_drops_elaborated_and_const_checked::get_query_non_incr::__rust_end_short_backtrace 45: 0x7b706d118d4a - rustc_mir_transform[ff5e13a6e501cd2c]::mir_for_ctfe 46: 0x7b706d118bef - rustc_query_impl[8ceca73aa722394f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ceca73aa722394f]::query_impl::mir_for_ctfe::dynamic_query::{closure#2}::{closure#0}, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 8usize]>> 47: 0x7b706c61ad7a - rustc_query_system[44f2cb83942a7389]::query::plumbing::try_execute_query::<rustc_query_impl[8ceca73aa722394f]::DynamicConfig<rustc_query_system[44f2cb83942a7389]::query::caches::DefIdCache<rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[8ceca73aa722394f]::plumbing::QueryCtxt, false> 48: 0x7b706d270a23 - rustc_query_impl[8ceca73aa722394f]::query_impl::mir_for_ctfe::get_query_non_incr::__rust_end_short_backtrace 49: 0x7b706d270bf7 - <rustc_const_eval[77c235cee62e82ee]::interpret::eval_context::InterpCx<rustc_const_eval[77c235cee62e82ee]::const_eval::machine::CompileTimeMachine>>::load_mir 50: 0x7b706d271bdd - rustc_const_eval[77c235cee62e82ee]::const_eval::eval_queries::eval_to_allocation_raw_provider 51: 0x7b706d27174e - rustc_query_impl[8ceca73aa722394f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ceca73aa722394f]::query_impl::eval_to_allocation_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 24usize]>> 52: 0x7b706d267420 - rustc_query_system[44f2cb83942a7389]::query::plumbing::try_execute_query::<rustc_query_impl[8ceca73aa722394f]::DynamicConfig<rustc_query_system[44f2cb83942a7389]::query::caches::DefaultCache<rustc_middle[e11099e36afb5411]::ty::PseudoCanonicalInput<rustc_middle[e11099e36afb5411]::mir::interpret::GlobalId>, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[8ceca73aa722394f]::plumbing::QueryCtxt, false> 53: 0x7b706d266fc7 - rustc_query_impl[8ceca73aa722394f]::query_impl::eval_to_allocation_raw::get_query_non_incr::__rust_end_short_backtrace 54: 0x7b706d2695ad - rustc_const_eval[77c235cee62e82ee]::const_eval::eval_queries::eval_to_const_value_raw_provider 55: 0x7b706d2693c0 - rustc_query_impl[8ceca73aa722394f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ceca73aa722394f]::query_impl::eval_to_const_value_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 24usize]>> 56: 0x7b706d268b12 - rustc_query_system[44f2cb83942a7389]::query::plumbing::try_execute_query::<rustc_query_impl[8ceca73aa722394f]::DynamicConfig<rustc_query_system[44f2cb83942a7389]::query::caches::DefaultCache<rustc_middle[e11099e36afb5411]::ty::PseudoCanonicalInput<rustc_middle[e11099e36afb5411]::mir::interpret::GlobalId>, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 24usize]>>, false, true, false>, rustc_query_impl[8ceca73aa722394f]::plumbing::QueryCtxt, false> 57: 0x7b706d268691 - rustc_query_impl[8ceca73aa722394f]::query_impl::eval_to_const_value_raw::get_query_non_incr::__rust_end_short_backtrace 58: 0x7b706d0c9a90 - <rustc_middle[e11099e36afb5411]::ty::context::TyCtxt>::par_hir_body_owners::<rustc_hir_analysis[1618d3df19afa2f8]::check_crate::{closure#2}>::{closure#0} 59: 0x7b706d0c8a4d - rustc_hir_analysis[1618d3df19afa2f8]::check_crate 60: 0x7b706c7e8bb0 - rustc_interface[f4ad0248271d71d8]::passes::analysis 61: 0x7b706c7e886d - rustc_query_impl[8ceca73aa722394f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ceca73aa722394f]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 0usize]>> 62: 0x7b706d665526 - rustc_query_system[44f2cb83942a7389]::query::plumbing::try_execute_query::<rustc_query_impl[8ceca73aa722394f]::DynamicConfig<rustc_query_system[44f2cb83942a7389]::query::caches::SingleCache<rustc_middle[e11099e36afb5411]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[8ceca73aa722394f]::plumbing::QueryCtxt, false> 63: 0x7b706d66517c - rustc_query_impl[8ceca73aa722394f]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace 64: 0x7b706d872d4f - rustc_interface[f4ad0248271d71d8]::passes::create_and_enter_global_ctxt::<core[88dcab6addd45e6c]::option::Option<rustc_interface[f4ad0248271d71d8]::queries::Linker>, rustc_driver_impl[459800387efcc559]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0} 65: 0x7b706d7e96be - rustc_interface[f4ad0248271d71d8]::interface::run_compiler::<(), rustc_driver_impl[459800387efcc559]::run_compiler::{closure#0}>::{closure#1} 66: 0x7b706d7482f8 - std[6c96415bc1a38016]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[f4ad0248271d71d8]::util::run_in_thread_with_globals<rustc_interface[f4ad0248271d71d8]::util::run_in_thread_pool_with_globals<rustc_interface[f4ad0248271d71d8]::interface::run_compiler<(), rustc_driver_impl[459800387efcc559]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> 67: 0x7b706d747fdc - <<std[6c96415bc1a38016]::thread::Builder>::spawn_unchecked_<rustc_interface[f4ad0248271d71d8]::util::run_in_thread_with_globals<rustc_interface[f4ad0248271d71d8]::util::run_in_thread_pool_with_globals<rustc_interface[f4ad0248271d71d8]::interface::run_compiler<(), rustc_driver_impl[459800387efcc559]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[88dcab6addd45e6c]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} 68: 0x7b706d74e68d - std::sys::thread::unix::Thread::new::thread_start::hb28ad79a6a69b48c 69: 0x7b7066e94ac3 - <unknown> 70: 0x7b7066f26850 - <unknown> 71: 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 `/app/rustc-ice-2025-09-21T08_30_04-1.txt` to your bug report note: compiler flags: -C debuginfo=2 --crate-type bin -C linker=/opt/compiler-explorer/gcc-15.2.0/bin/gcc query stack during panic: #0 [typeck] type-checking `_` #1 [check_match] match-checking `_` ... and 9 other queries... use `env RUST_BACKTRACE=1` to see the full query stack 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: `TypeError` when attempting coercion but no error emitted --> <source>:28:45 | 28 | const _: for<'a> fn() -> i32 = #[coroutine] || -> i32 { yield 0; return 1; }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | note: delayed at compiler/rustc_hir_typeck/src/demand.rs:276:47 - disabled backtrace --> <source>:28:45 | 28 | const _: for<'a> fn() -> i32 = #[coroutine] || -> i32 { yield 0; return 1; }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 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 `/app/rustc-ice-2025-09-21T08_30_04-1.txt` to your bug report note: compiler flags: -C debuginfo=2 --crate-type bin -C linker=/opt/compiler-explorer/gcc-15.2.0/bin/gcc query stack during panic: end of query stack