[WIP] Underefer refactoring

[beepster4096]

Store data needed to undo Derefer pass in LocalInfo::DerefTemp.

Very much not done yet, just nabbing CI :p

edit: I linked to this from a "real" PR so for context, I'm trying to see if I can get rid of the hashmap in Underefer by sticking its data into the local info

[rust-log-analyzer]

The job aarch64-gnu-llvm-19-1 failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

thread 'rustc' panicked at compiler/rustc_middle/src/mir/mod.rs:812:39: Box<dyn Any> stack backtrace: 0: std::panicking::begin_panic::<rustc_errors::ExplicitBug> 1: <rustc_errors::diagnostic::BugAbort as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee 2: rustc_middle::util::bug::opt_span_bug_fmt::<rustc_span::span_encoding::Span>::{closure#0} 3: rustc_middle::ty::context::tls::with_opt::<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0} 4: rustc_middle::ty::context::tls::with_context_opt::<rustc_middle::ty::context::tls::with_opt<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0}, !> 5: rustc_middle::util::bug::bug_fmt 6: <rustc_middle::mir::LocalDecl>::local_info 7: <rustc_mir_transform::validate::TypeChecker as rustc_middle::mir::visit::Visitor>::visit_statement 8: rustc_mir_transform::validate::validate_types 9: <rustc_mir_transform::validate::Validator as rustc_mir_transform::pass_manager::MirPass>::run_pass 10: rustc_mir_transform::pass_manager::run_passes_inner 11: rustc_mir_transform::run_optimization_passes 12: rustc_mir_transform::optimized_mir [... omitted 3 frames ...] 13: rustc_mir_transform::deduce_param_attrs::deduced_param_attrs [... omitted 3 frames ...] 14: rustc_ty_utils::abi::fn_abi_new_uncached 15: rustc_ty_utils::abi::fn_abi_of_instance [... omitted 3 frames ...] 16: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine> as rustc_middle::ty::layout::FnAbiOf>::fn_abi_of_instance 17: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::eval_callee_and_args 18: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::eval_terminator 19: rustc_const_eval::const_eval::eval_queries::eval_to_allocation_raw_provider [... omitted 3 frames ...] 20: rustc_const_eval::const_eval::eval_queries::eval_to_const_value_raw_provider [... omitted 3 frames ...] 21: <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners::<rustc_hir_analysis::check_crate::{closure#2}>::{closure#0} 22: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_hir_analysis::check_crate::{closure#2}>::{closure#0}> 23: rustc_hir_analysis::check_crate 24: rustc_interface::passes::analysis [... omitted 3 frames ...] 25: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<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}::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>> 26: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, 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}::{closure#0}> 27: <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} 28: <alloc::boxed::Box<dyn for<'a> core::ops::function::FnOnce<(&'a rustc_session::session::Session, rustc_middle::ty::context::CurrentGcx, alloc::sync::Arc<rustc_data_structures::jobserver::Proxy>, &'a std::sync::once_lock::OnceLock<rustc_middle::ty::context::GlobalCtxt<'a>>, &'a rustc_data_structures::sync::worker_local::WorkerLocal<rustc_middle::arena::Arena<'a>>, &'a rustc_data_structures::sync::worker_local::WorkerLocal<rustc_hir::Arena<'a>>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}), Output = core::option::Option<rustc_interface::queries::Linker>>> 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 29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}> 30: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<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#0}, ()> 31: rustc_span::create_session_globals_then::<(), 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#0}> note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace. --- warning: the ICE couldn't be written to `/checkout/rustc-ice-2025-08-13T09_41_25-12634.txt`: Read-only file system (os error 30) note: rustc 1.91.0-nightly (8de5cebcd 2025-08-13) running on aarch64-unknown-linux-gnu note: compiler flags: --crate-type lib -C opt-level=3 -C embed-bitcode=no -C codegen-units=1 -C debug-assertions=on -C symbol-mangling-version=legacy -Z randomize-layout -Z unstable-options -Z macro-backtrace -C split-debuginfo=off -C prefer-dynamic -C llvm-args=-import-instr-limit=10 -Z inline-mir -Z inline-mir-preserve-debug -Z mir_strip_debuginfo=locals-in-tiny-functions -C link-args=-Wl,-z,origin -C link-args=-Wl,-rpath,$ORIGIN/../lib -C embed-bitcode=yes -Z unstable-options -C force-frame-pointers=non-leaf -Z crate-attr=doc(html_root_url="https://doc.rust-lang.org/nightly/") -Z binary-dep-depinfo -Z force-unstable-if-unmarked note: some of the compiler flags provided by cargo are hidden query stack during panic: #0 [optimized_mir] optimizing MIR for `intrinsics::is_val_statically_known` #1 [deduced_param_attrs] deducing parameter attributes for intrinsics::is_val_statically_known #2 [fn_abi_of_instance] computing call ABI of `intrinsics::is_val_statically_known::<u32> - intrinsic` #3 [eval_to_allocation_raw] const-evaluating + checking `num::int_sqrt::U8_ISQRT_WITH_REMAINDER` #4 [eval_to_const_value_raw] simplifying constant for the type system `num::int_sqrt::U8_ISQRT_WITH_REMAINDER` #5 [analysis] running analysis passes on this crate end of query stack thread 'rustc' panicked at compiler/rustc_middle/src/mir/mod.rs:812:39: Box<dyn Any> stack backtrace: 0: std::panicking::begin_panic::<rustc_errors::ExplicitBug> 1: <rustc_errors::diagnostic::BugAbort as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee 2: rustc_middle::util::bug::opt_span_bug_fmt::<rustc_span::span_encoding::Span>::{closure#0} 3: rustc_middle::ty::context::tls::with_opt::<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0} 4: rustc_middle::ty::context::tls::with_context_opt::<rustc_middle::ty::context::tls::with_opt<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0}, !> 5: rustc_middle::util::bug::bug_fmt 6: <rustc_middle::mir::LocalDecl>::local_info 7: <rustc_mir_transform::validate::TypeChecker as rustc_middle::mir::visit::Visitor>::visit_statement 8: rustc_mir_transform::validate::validate_types 9: <rustc_mir_transform::validate::Validator as rustc_mir_transform::pass_manager::MirPass>::run_pass 10: rustc_mir_transform::pass_manager::run_passes_inner 11: rustc_mir_transform::run_optimization_passes 12: rustc_mir_transform::optimized_mir [... omitted 3 frames ...] 13: rustc_mir_transform::deduce_param_attrs::deduced_param_attrs [... omitted 3 frames ...] 14: rustc_ty_utils::abi::fn_abi_new_uncached 15: rustc_ty_utils::abi::fn_abi_of_instance [... omitted 3 frames ...] 16: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine> as rustc_middle::ty::layout::FnAbiOf>::fn_abi_of_instance 17: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::eval_callee_and_args 18: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::eval_terminator 19: rustc_const_eval::const_eval::eval_queries::eval_to_allocation_raw_provider [... omitted 3 frames ...] 20: rustc_const_eval::const_eval::eval_queries::eval_to_const_value_raw_provider [... omitted 3 frames ...] 21: <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners::<rustc_hir_analysis::check_crate::{closure#2}>::{closure#0} 22: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_hir_analysis::check_crate::{closure#2}>::{closure#0}> 23: rustc_hir_analysis::check_crate 24: rustc_interface::passes::analysis [... omitted 3 frames ...] 25: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<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}::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>> 26: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, 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}::{closure#0}> 27: <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} 28: <alloc::boxed::Box<dyn for<'a> core::ops::function::FnOnce<(&'a rustc_session::session::Session, rustc_middle::ty::context::CurrentGcx, alloc::sync::Arc<rustc_data_structures::jobserver::Proxy>, &'a std::sync::once_lock::OnceLock<rustc_middle::ty::context::GlobalCtxt<'a>>, &'a rustc_data_structures::sync::worker_local::WorkerLocal<rustc_middle::arena::Arena<'a>>, &'a rustc_data_structures::sync::worker_local::WorkerLocal<rustc_hir::Arena<'a>>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}), Output = core::option::Option<rustc_interface::queries::Linker>>> 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 29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}> 30: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<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#0}, ()> 31: rustc_span::create_session_globals_then::<(), 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#0}> note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace. --- warning: the ICE couldn't be written to `/checkout/rustc-ice-2025-08-13T09_41_25-12634.txt`: Read-only file system (os error 30) note: rustc 1.91.0-nightly (8de5cebcd 2025-08-13) running on aarch64-unknown-linux-gnu note: compiler flags: --crate-type lib -C opt-level=3 -C embed-bitcode=no -C codegen-units=1 -C debug-assertions=on -C symbol-mangling-version=legacy -Z randomize-layout -Z unstable-options -Z macro-backtrace -C split-debuginfo=off -C prefer-dynamic -C llvm-args=-import-instr-limit=10 -Z inline-mir -Z inline-mir-preserve-debug -Z mir_strip_debuginfo=locals-in-tiny-functions -C link-args=-Wl,-z,origin -C link-args=-Wl,-rpath,$ORIGIN/../lib -C embed-bitcode=yes -Z unstable-options -C force-frame-pointers=non-leaf -Z crate-attr=doc(html_root_url="https://doc.rust-lang.org/nightly/") -Z binary-dep-depinfo -Z force-unstable-if-unmarked note: some of the compiler flags provided by cargo are hidden query stack during panic: #0 [optimized_mir] optimizing MIR for `option::<impl at library/core/src/option.rs:608:1: 608:18>::unwrap` #1 [deduced_param_attrs] deducing parameter attributes for option::<impl at library/core/src/option.rs:608:1: 608:18>::unwrap #2 [fn_abi_of_instance] computing call ABI of `option::<impl at library/core/src/option.rs:608:1: 608:18>::unwrap` #3 [eval_to_allocation_raw] const-evaluating + checking `ascii::ascii_char::<impl at library/core/src/ascii/ascii_char.rs:590:1: 590:30>::fmt::HEX_DIGITS` #4 [eval_to_const_value_raw] simplifying constant for the type system `ascii::ascii_char::<impl at library/core/src/ascii/ascii_char.rs:590:1: 590:30>::fmt::HEX_DIGITS` #5 [analysis] running analysis passes on this crate end of query stack thread 'rustc' panicked at compiler/rustc_middle/src/mir/mod.rs:812:39: Box<dyn Any> stack backtrace: 0: std::panicking::begin_panic::<rustc_errors::ExplicitBug> 1: <rustc_errors::diagnostic::BugAbort as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee 2: rustc_middle::util::bug::opt_span_bug_fmt::<rustc_span::span_encoding::Span>::{closure#0} 3: rustc_middle::ty::context::tls::with_opt::<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0} 4: rustc_middle::ty::context::tls::with_context_opt::<rustc_middle::ty::context::tls::with_opt<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0}, !> 5: rustc_middle::util::bug::bug_fmt 6: <rustc_middle::mir::LocalDecl>::local_info 7: <rustc_mir_transform::validate::TypeChecker as rustc_middle::mir::visit::Visitor>::visit_statement 8: rustc_mir_transform::validate::validate_types 9: <rustc_mir_transform::validate::Validator as rustc_mir_transform::pass_manager::MirPass>::run_pass 10: rustc_mir_transform::pass_manager::run_passes_inner 11: rustc_mir_transform::run_optimization_passes 12: rustc_mir_transform::optimized_mir [... omitted 3 frames ...] 13: rustc_mir_transform::deduce_param_attrs::deduced_param_attrs [... omitted 3 frames ...] 14: rustc_ty_utils::abi::fn_abi_new_uncached 15: rustc_ty_utils::abi::fn_abi_of_instance [... omitted 3 frames ...] 16: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine> as rustc_middle::ty::layout::FnAbiOf>::fn_abi_of_instance 17: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::eval_callee_and_args 18: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::eval_terminator 19: rustc_const_eval::const_eval::eval_queries::eval_to_allocation_raw_provider [... omitted 3 frames ...] 20: rustc_const_eval::const_eval::eval_queries::eval_to_const_value_raw_provider [... omitted 3 frames ...] 21: <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners::<rustc_hir_analysis::check_crate::{closure#2}>::{closure#0} 22: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_hir_analysis::check_crate::{closure#2}>::{closure#0}> 23: rustc_hir_analysis::check_crate 24: rustc_interface::passes::analysis [... omitted 3 frames ...] 25: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<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}::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>> 26: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, 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}::{closure#0}> 27: <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} 28: <alloc::boxed::Box<dyn for<'a> core::ops::function::FnOnce<(&'a rustc_session::session::Session, rustc_middle::ty::context::CurrentGcx, alloc::sync::Arc<rustc_data_structures::jobserver::Proxy>, &'a std::sync::once_lock::OnceLock<rustc_middle::ty::context::GlobalCtxt<'a>>, &'a rustc_data_structures::sync::worker_local::WorkerLocal<rustc_middle::arena::Arena<'a>>, &'a rustc_data_structures::sync::worker_local::WorkerLocal<rustc_hir::Arena<'a>>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}), Output = core::option::Option<rustc_interface::queries::Linker>>> 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 29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}> 30: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<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#0}, ()> 31: rustc_span::create_session_globals_then::<(), 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#0}> note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace. --- warning: the ICE couldn't be written to `/checkout/rustc-ice-2025-08-13T09_41_25-12634.txt`: Read-only file system (os error 30) note: rustc 1.91.0-nightly (8de5cebcd 2025-08-13) running on aarch64-unknown-linux-gnu note: compiler flags: --crate-type lib -C opt-level=3 -C embed-bitcode=no -C codegen-units=1 -C debug-assertions=on -C symbol-mangling-version=legacy -Z randomize-layout -Z unstable-options -Z macro-backtrace -C split-debuginfo=off -C prefer-dynamic -C llvm-args=-import-instr-limit=10 -Z inline-mir -Z inline-mir-preserve-debug -Z mir_strip_debuginfo=locals-in-tiny-functions -C link-args=-Wl,-z,origin -C link-args=-Wl,-rpath,$ORIGIN/../lib -C embed-bitcode=yes -Z unstable-options -C force-frame-pointers=non-leaf -Z crate-attr=doc(html_root_url="https://doc.rust-lang.org/nightly/") -Z binary-dep-depinfo -Z force-unstable-if-unmarked note: some of the compiler flags provided by cargo are hidden query stack during panic: #0 [optimized_mir] optimizing MIR for `cell::<impl at library/core/src/cell.rs:2100:1: 2100:22>::new` #1 [deduced_param_attrs] deducing parameter attributes for cell::<impl at library/core/src/cell.rs:2100:1: 2100:22>::new #2 [fn_abi_of_instance] computing call ABI of `cell::<impl at library/core/src/cell.rs:2100:1: 2100:22>::new` #3 [eval_to_allocation_raw] const-evaluating + checking `sync::atomic::ATOMIC_BOOL_INIT` #4 [eval_to_const_value_raw] simplifying constant for the type system `sync::atomic::ATOMIC_BOOL_INIT` #5 [analysis] running analysis passes on this crate end of query stack thread 'rustc' panicked at compiler/rustc_middle/src/mir/mod.rs:812:39: Box<dyn Any> stack backtrace: 0: std::panicking::begin_panic::<rustc_errors::ExplicitBug> 1: <rustc_errors::diagnostic::BugAbort as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee 2: rustc_middle::util::bug::opt_span_bug_fmt::<rustc_span::span_encoding::Span>::{closure#0} 3: rustc_middle::ty::context::tls::with_opt::<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0} 4: rustc_middle::ty::context::tls::with_context_opt::<rustc_middle::ty::context::tls::with_opt<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0}, !> 5: rustc_middle::util::bug::bug_fmt 6: <rustc_middle::mir::LocalDecl>::local_info 7: <rustc_mir_transform::validate::TypeChecker as rustc_middle::mir::visit::Visitor>::visit_statement 8: rustc_mir_transform::validate::validate_types 9: <rustc_mir_transform::validate::Validator as rustc_mir_transform::pass_manager::MirPass>::run_pass 10: rustc_mir_transform::pass_manager::run_passes_inner 11: rustc_mir_transform::run_optimization_passes 12: rustc_mir_transform::optimized_mir [... omitted 3 frames ...] 13: rustc_mir_transform::deduce_param_attrs::deduced_param_attrs [... omitted 3 frames ...] 14: rustc_ty_utils::abi::fn_abi_new_uncached 15: rustc_ty_utils::abi::fn_abi_of_instance [... omitted 3 frames ...] 16: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine> as rustc_middle::ty::layout::FnAbiOf>::fn_abi_of_instance 17: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::eval_callee_and_args 18: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::eval_terminator 19: rustc_const_eval::const_eval::eval_queries::eval_to_allocation_raw_provider [... omitted 3 frames ...] 20: rustc_const_eval::const_eval::eval_queries::eval_to_const_value_raw_provider [... omitted 3 frames ...] 21: <rustc_middle::ty::context::TyCtxt>::const_eval_global_id 22: <rustc_middle::ty::context::TyCtxt>::const_eval_resolve 23: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::push_stack_frame_raw 24: rustc_const_eval::const_eval::eval_queries::eval_to_allocation_raw_provider [... omitted 3 frames ...] 25: rustc_const_eval::const_eval::valtrees::eval_to_valtree 26: <rustc_const_eval::provide::{closure#0} as core::ops::function::FnOnce<(rustc_middle::ty::context::TyCtxt, rustc_middle::ty::PseudoCanonicalInput<rustc_middle::mir::interpret::GlobalId>)>>::call_once [... omitted 3 frames ...] 27: <rustc_middle::ty::context::TyCtxt>::const_eval_global_id_for_typeck 28: <rustc_middle::ty::context::TyCtxt>::const_eval_resolve_for_typeck 29: rustc_trait_selection::traits::try_evaluate_const 30: <rustc_trait_selection::traits::normalize::AssocTypeNormalizer as rustc_type_ir::fold::TypeFolder<rustc_middle::ty::context::TyCtxt>>::fold_const 31: <rustc_trait_selection::traits::normalize::AssocTypeNormalizer>::fold::<rustc_middle::ty::consts::Const> 32: rustc_trait_selection::traits::normalize::normalize_with_depth::<rustc_middle::ty::consts::Const> 33: <rustc_infer::infer::at::At as rustc_trait_selection::traits::normalize::NormalizeExt>::normalize::<rustc_middle::ty::consts::Const> 34: <rustc_hir_typeck::fn_ctxt::FnCtxt>::normalize::<rustc_middle::ty::consts::Const> 35: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_kind 36: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args 37: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_with_expectation 38: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_decl 39: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_block 40: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_kind 41: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args 42: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_with_expectation 43: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_block 44: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_kind 45: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args 46: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_with_expectation 47: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_return_or_body_tail 48: rustc_hir_typeck::check::check_fn 49: rustc_hir_typeck::typeck_with_inspect [... omitted 3 frames ...] 50: <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners::<rustc_hir_analysis::check_crate::{closure#2}>::{closure#0} note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace. 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 warning: the ICE couldn't be written to `/checkout/rustc-ice-2025-08-13T09_41_25-12634.txt`: Read-only file system (os error 30) note: rustc 1.91.0-nightly (8de5cebcd 2025-08-13) running on aarch64-unknown-linux-gnu note: compiler flags: --crate-type lib -C opt-level=3 -C embed-bitcode=no -C codegen-units=1 -C debug-assertions=on -C symbol-mangling-version=legacy -Z randomize-layout -Z unstable-options -Z macro-backtrace -C split-debuginfo=off -C prefer-dynamic -C llvm-args=-import-instr-limit=10 -Z inline-mir -Z inline-mir-preserve-debug -Z mir_strip_debuginfo=locals-in-tiny-functions -C link-args=-Wl,-z,origin -C link-args=-Wl,-rpath,$ORIGIN/../lib -C embed-bitcode=yes -Z unstable-options -C force-frame-pointers=non-leaf -Z crate-attr=doc(html_root_url="https://doc.rust-lang.org/nightly/") -Z binary-dep-depinfo -Z force-unstable-if-unmarked note: some of the compiler flags provided by cargo are hidden query stack during panic: #0 [optimized_mir] optimizing MIR for `num::nonzero::<impl at library/core/src/num/nonzero.rs:383:1: 385:26>::new` #1 [deduced_param_attrs] deducing parameter attributes for num::nonzero::<impl at library/core/src/num/nonzero.rs:383:1: 385:26>::new #2 [fn_abi_of_instance] computing call ABI of `num::nonzero::<impl at library/core/src/num/nonzero.rs:383:1: 385:26>::new` | = note: this failure-note originates in the macro `impl_Display` (in Nightly builds, run with -Z macro-backtrace for more info) #3 [eval_to_allocation_raw] const-evaluating + checking `fmt::num::imp::<impl at library/core/src/fmt/num.rs:212:9: 212:40>::fmt::MAX_DEC_N` #4 [eval_to_const_value_raw] simplifying constant for the type system `fmt::num::imp::<impl at library/core/src/fmt/num.rs:212:9: 212:40>::fmt::MAX_DEC_N` | = note: this failure-note originates in the macro `impl_Display` (in Nightly builds, run with -Z macro-backtrace for more info) #5 [eval_to_allocation_raw] const-evaluating + checking `fmt::num::imp::<impl at library/core/src/fmt/num.rs:212:9: 212:40>::fmt::{constant#0}` #6 [eval_to_valtree] evaluating type-level constant | = note: this failure-note originates in the macro `impl_Display` (in Nightly builds, run with -Z macro-backtrace for more info) #7 [typeck] type-checking `fmt::num::imp::<impl at library/core/src/fmt/num.rs:212:9: 212:40>::fmt` #8 [analysis] running analysis passes on this crate end of query stack thread 'rustc' panicked at compiler/rustc_middle/src/mir/mod.rs:812:39: Box<dyn Any> stack backtrace: 0: std::panicking::begin_panic::<rustc_errors::ExplicitBug> 1: <rustc_errors::diagnostic::BugAbort as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee 2: rustc_middle::util::bug::opt_span_bug_fmt::<rustc_span::span_encoding::Span>::{closure#0} 3: rustc_middle::ty::context::tls::with_opt::<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0} 4: rustc_middle::ty::context::tls::with_context_opt::<rustc_middle::ty::context::tls::with_opt<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0}, !> 5: rustc_middle::util::bug::bug_fmt 6: <rustc_middle::mir::LocalDecl>::local_info 7: <rustc_mir_transform::validate::TypeChecker as rustc_middle::mir::visit::Visitor>::visit_statement 8: rustc_mir_transform::validate::validate_types 9: <rustc_mir_transform::validate::Validator as rustc_mir_transform::pass_manager::MirPass>::run_pass 10: rustc_mir_transform::pass_manager::run_passes_inner 11: rustc_mir_transform::run_optimization_passes 12: rustc_mir_transform::optimized_mir [... omitted 3 frames ...] 13: rustc_mir_transform::deduce_param_attrs::deduced_param_attrs [... omitted 3 frames ...] 14: rustc_ty_utils::abi::fn_abi_new_uncached 15: rustc_ty_utils::abi::fn_abi_of_instance [... omitted 3 frames ...] 16: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine> as rustc_middle::ty::layout::FnAbiOf>::fn_abi_of_instance 17: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::eval_callee_and_args 18: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::eval_terminator 19: rustc_const_eval::const_eval::eval_queries::eval_to_allocation_raw_provider [... omitted 3 frames ...] 20: rustc_const_eval::const_eval::eval_queries::eval_to_const_value_raw_provider [... omitted 3 frames ...] 21: <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners::<rustc_hir_analysis::check_crate::{closure#2}>::{closure#0} 22: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_hir_analysis::check_crate::{closure#2}>::{closure#0}> 23: rustc_hir_analysis::check_crate 24: rustc_interface::passes::analysis [... omitted 3 frames ...] 25: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<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}::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>> 26: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, 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}::{closure#0}> 27: <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} 28: <alloc::boxed::Box<dyn for<'a> core::ops::function::FnOnce<(&'a rustc_session::session::Session, rustc_middle::ty::context::CurrentGcx, alloc::sync::Arc<rustc_data_structures::jobserver::Proxy>, &'a std::sync::once_lock::OnceLock<rustc_middle::ty::context::GlobalCtxt<'a>>, &'a rustc_data_structures::sync::worker_local::WorkerLocal<rustc_middle::arena::Arena<'a>>, &'a rustc_data_structures::sync::worker_local::WorkerLocal<rustc_hir::Arena<'a>>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}), Output = core::option::Option<rustc_interface::queries::Linker>>> 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 29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}> 30: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<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#0}, ()> 31: rustc_span::create_session_globals_then::<(), 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#0}> note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace. --- warning: the ICE couldn't be written to `/checkout/rustc-ice-2025-08-13T09_41_25-12634.txt`: Read-only file system (os error 30) note: rustc 1.91.0-nightly (8de5cebcd 2025-08-13) running on aarch64-unknown-linux-gnu note: compiler flags: --crate-type lib -C opt-level=3 -C embed-bitcode=no -C codegen-units=1 -C debug-assertions=on -C symbol-mangling-version=legacy -Z randomize-layout -Z unstable-options -Z macro-backtrace -C split-debuginfo=off -C prefer-dynamic -C llvm-args=-import-instr-limit=10 -Z inline-mir -Z inline-mir-preserve-debug -Z mir_strip_debuginfo=locals-in-tiny-functions -C link-args=-Wl,-z,origin -C link-args=-Wl,-rpath,$ORIGIN/../lib -C embed-bitcode=yes -Z unstable-options -C force-frame-pointers=non-leaf -Z crate-attr=doc(html_root_url="https://doc.rust-lang.org/nightly/") -Z binary-dep-depinfo -Z force-unstable-if-unmarked note: some of the compiler flags provided by cargo are hidden query stack during panic: #0 [optimized_mir] optimizing MIR for `num::<impl at library/core/src/num/mod.rs:1247:1: 1247:11>::from_ne_bytes` #1 [deduced_param_attrs] deducing parameter attributes for num::<impl at library/core/src/num/mod.rs:1247:1: 1247:11>::from_ne_bytes #2 [fn_abi_of_instance] computing call ABI of `num::<impl at library/core/src/num/mod.rs:1247:1: 1247:11>::from_ne_bytes` #3 [eval_to_allocation_raw] const-evaluating + checking `slice::memchr::LO_USIZE` #4 [eval_to_const_value_raw] simplifying constant for the type system `slice::memchr::LO_USIZE` #5 [analysis] running analysis passes on this crate end of query stack thread 'rustc' panicked at compiler/rustc_middle/src/mir/mod.rs:812:39: Box<dyn Any> stack backtrace: 0: std::panicking::begin_panic::<rustc_errors::ExplicitBug> 1: <rustc_errors::diagnostic::BugAbort as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee 2: rustc_middle::util::bug::opt_span_bug_fmt::<rustc_span::span_encoding::Span>::{closure#0} 3: rustc_middle::ty::context::tls::with_opt::<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0} 4: rustc_middle::ty::context::tls::with_context_opt::<rustc_middle::ty::context::tls::with_opt<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0}, !> 5: rustc_middle::util::bug::bug_fmt 6: <rustc_middle::mir::LocalDecl>::local_info 7: <rustc_mir_transform::validate::TypeChecker as rustc_middle::mir::visit::Visitor>::visit_statement 8: rustc_mir_transform::validate::validate_types 9: <rustc_mir_transform::validate::Validator as rustc_mir_transform::pass_manager::MirPass>::run_pass 10: rustc_mir_transform::pass_manager::run_passes_inner 11: rustc_mir_transform::run_optimization_passes 12: rustc_mir_transform::optimized_mir [... omitted 3 frames ...] 13: rustc_mir_transform::deduce_param_attrs::deduced_param_attrs [... omitted 3 frames ...] 14: rustc_ty_utils::abi::fn_abi_new_uncached 15: rustc_ty_utils::abi::fn_abi_of_instance [... omitted 3 frames ...] 16: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine> as rustc_middle::ty::layout::FnAbiOf>::fn_abi_of_instance 17: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::eval_callee_and_args 18: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::eval_terminator 19: rustc_const_eval::const_eval::eval_queries::eval_to_allocation_raw_provider [... omitted 3 frames ...] 20: rustc_const_eval::const_eval::eval_queries::eval_to_const_value_raw_provider [... omitted 3 frames ...] 21: <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners::<rustc_hir_analysis::check_crate::{closure#2}>::{closure#0} 22: rustc_data_structures::sync::parallel::par_for_each_in::<&rustc_span::def_id::LocalDefId, &[rustc_span::def_id::LocalDefId], <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners<rustc_hir_analysis::check_crate::{closure#2}>::{closure#0}> 23: rustc_hir_analysis::check_crate 24: rustc_interface::passes::analysis [... omitted 3 frames ...] 25: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<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}::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>> 26: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, 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}::{closure#0}> 27: <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} 28: <alloc::boxed::Box<dyn for<'a> core::ops::function::FnOnce<(&'a rustc_session::session::Session, rustc_middle::ty::context::CurrentGcx, alloc::sync::Arc<rustc_data_structures::jobserver::Proxy>, &'a std::sync::once_lock::OnceLock<rustc_middle::ty::context::GlobalCtxt<'a>>, &'a rustc_data_structures::sync::worker_local::WorkerLocal<rustc_middle::arena::Arena<'a>>, &'a rustc_data_structures::sync::worker_local::WorkerLocal<rustc_hir::Arena<'a>>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}), Output = core::option::Option<rustc_interface::queries::Linker>>> 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 29: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}> 30: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<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#0}, ()> 31: rustc_span::create_session_globals_then::<(), 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#0}> note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace. --- warning: the ICE couldn't be written to `/checkout/rustc-ice-2025-08-13T09_41_25-12634.txt`: Read-only file system (os error 30) note: rustc 1.91.0-nightly (8de5cebcd 2025-08-13) running on aarch64-unknown-linux-gnu note: compiler flags: --crate-type lib -C opt-level=3 -C embed-bitcode=no -C codegen-units=1 -C debug-assertions=on -C symbol-mangling-version=legacy -Z randomize-layout -Z unstable-options -Z macro-backtrace -C split-debuginfo=off -C prefer-dynamic -C llvm-args=-import-instr-limit=10 -Z inline-mir -Z inline-mir-preserve-debug -Z mir_strip_debuginfo=locals-in-tiny-functions -C link-args=-Wl,-z,origin -C link-args=-Wl,-rpath,$ORIGIN/../lib -C embed-bitcode=yes -Z unstable-options -C force-frame-pointers=non-leaf -Z crate-attr=doc(html_root_url="https://doc.rust-lang.org/nightly/") -Z binary-dep-depinfo -Z force-unstable-if-unmarked note: some of the compiler flags provided by cargo are hidden query stack during panic: #0 [optimized_mir] optimizing MIR for `task::wake::<impl at library/core/src/task/wake.rs:142:1: 142:20>::new` #1 [deduced_param_attrs] deducing parameter attributes for task::wake::<impl at library/core/src/task/wake.rs:142:1: 142:20>::new #2 [fn_abi_of_instance] computing call ABI of `task::wake::<impl at library/core/src/task/wake.rs:142:1: 142:20>::new` #3 [eval_to_allocation_raw] const-evaluating + checking `task::wake::<impl at library/core/src/task/wake.rs:33:1: 33:14>::NOOP::VTABLE` #4 [eval_to_const_value_raw] simplifying constant for the type system `task::wake::<impl at library/core/src/task/wake.rs:33:1: 33:14>::NOOP::VTABLE` #5 [analysis] running analysis passes on this crate end of query stack [RUSTC-TIMING] core test:false 13.206 error: could not compile `core` (lib) Caused by: process didn't exit successfully: `/checkout/obj/build/bootstrap/debug/rustc /checkout/obj/build/bootstrap/debug/rustc --crate-name core --edition=2024 library/core/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 -C embed-bitcode=no -C codegen-units=1 --warn=unexpected_cfgs --check-cfg 'cfg(no_fp_fmt_parse)' --check-cfg 'cfg(feature, values(any()))' --check-cfg 'cfg(target_has_reliable_f16)' --check-cfg 'cfg(target_has_reliable_f16_math)' --check-cfg 'cfg(target_has_reliable_f128)' --check-cfg 'cfg(target_has_reliable_f128_math)' -C debug-assertions=on --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("debug_refcell", "optimize_for_size", "panic_immediate_abort"))' -C metadata=b25c20fe3ed30f4a -C extra-filename=-b49d49c95d9ada77 --out-dir /checkout/obj/build/aarch64-unknown-linux-gnu/stage1-std/aarch64-unknown-linux-gnu/release/deps --target aarch64-unknown-linux-gnu -L dependency=/checkout/obj/build/aarch64-unknown-linux-gnu/stage1-std/aarch64-unknown-linux-gnu/release/deps -L dependency=/checkout/obj/build/aarch64-unknown-linux-gnu/stage1-std/release/deps -Csymbol-mangling-version=legacy -Zrandomize-layout '--check-cfg=cfg(feature,values(any()))' -Zunstable-options -Zmacro-backtrace -Csplit-debuginfo=off -Cprefer-dynamic -Cllvm-args=-import-instr-limit=10 --cfg=randomized_layouts -Zinline-mir -Zinline-mir-preserve-debug -Zmir_strip_debuginfo=locals-in-tiny-functions -Clink-args=-Wl,-z,origin '-Clink-args=-Wl,-rpath,$ORIGIN/../lib' -Alinker-messages -Cembed-bitcode=yes -Zunstable-options -Cforce-frame-pointers=non-leaf '-Zcrate-attr=doc(html_root_url="https://doc.rust-lang.org/nightly/")' -Z binary-dep-depinfo` (exit status: 101) Build completed unsuccessfully in 0:07:28 local time: Wed Aug 13 09:41:38 UTC 2025 network time: Wed, 13 Aug 2025 09:41:38 GMT ##[error]Process completed with exit code 1. Post job cleanup. 

[bors]

☔ The latest upstream changes (presumably #146666) made this pull request unmergeable. Please resolve the merge conflicts.