warning: the feature `min_generic_const_args` is incomplete and may not be safe to use and/or cause compiler crashes
--> /tmp/icemaker_global_tempdir.VYf0f6yJxQ7o/rustc_testrunner_tmpdir_reporting.gtukBlXfVnFK/mvce.rs:1:12
|
1 | #![feature(min_generic_const_args, generic_const_items)]
| ^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #132980 <https://github.com/rust-lang/rust/issues/132980> for more information
= note: `#[warn(incomplete_features)]` on by default
warning: the feature `generic_const_items` is incomplete and may not be safe to use and/or cause compiler crashes
--> /tmp/icemaker_global_tempdir.VYf0f6yJxQ7o/rustc_testrunner_tmpdir_reporting.gtukBlXfVnFK/mvce.rs:1:36
|
1 | #![feature(min_generic_const_args, generic_const_items)]
| ^^^^^^^^^^^^^^^^^^^
|
= note: see issue #113521 <https://github.com/rust-lang/rust/issues/113521> for more information
warning: constant `FREE1` is never used
--> /tmp/icemaker_global_tempdir.VYf0f6yJxQ7o/rustc_testrunner_tmpdir_reporting.gtukBlXfVnFK/mvce.rs:3:12
|
3 | type const FREE1<T>: usize = const { std::mem::size_of::<*mut T>() };
| ^^^^^
|
= note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
warning: 3 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: unexpected rigid alias in layout_of after normalization: Alias(Projection, AliasTy { args: [!0], def_id: DefId(2:2715 ~ core[6b09]::ptr::metadata::Pointee::Metadata), .. })
|
= note: delayed at /rustc-dev/5bbdeaa9a8dc563185f40e99f96704cbcc7a6e6e/compiler/rustc_ty_utils/src/layout.rs:780:61
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::<alloc::string::String>
4: rustc_ty_utils::layout::layout_of_uncached
5: rustc_ty_utils::layout::layout_of
6: rustc_query_impl::query_impl::layout_of::invoke_provider_fn::__rust_begin_short_backtrace
7: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::ErasedData<[u8; 16]>>, false>
8: rustc_query_impl::query_impl::layout_of::execute_query_non_incr::__rust_end_short_backtrace
9: <rustc_middle::ty::layout::LayoutCx as rustc_middle::ty::layout::LayoutOf>::spanned_layout_of
10: rustc_ty_utils::layout::layout_of_uncached
11: rustc_ty_utils::layout::layout_of
12: rustc_query_impl::query_impl::layout_of::invoke_provider_fn::__rust_begin_short_backtrace
13: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::ErasedData<[u8; 16]>>, false>
14: rustc_query_impl::query_impl::layout_of::execute_query_non_incr::__rust_end_short_backtrace
15: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::eval_intrinsic
16: <rustc_const_eval::const_eval::machine::CompileTimeMachine as rustc_const_eval::interpret::machine::Machine>::call_intrinsic
17: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::init_fn_call
18: rustc_const_eval::const_eval::eval_queries::eval_to_allocation_raw_provider
19: rustc_query_impl::query_impl::eval_to_allocation_raw::invoke_provider_fn::__rust_begin_short_backtrace
20: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::mir::interpret::GlobalId>, rustc_middle::query::erase::ErasedData<[u8; 24]>>, false>
21: rustc_query_impl::query_impl::eval_to_allocation_raw::execute_query_non_incr::__rust_end_short_backtrace
22: rustc_const_eval::const_eval::eval_queries::eval_to_const_value_raw_provider
23: rustc_query_impl::query_impl::eval_to_const_value_raw::invoke_provider_fn::__rust_begin_short_backtrace
24: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::mir::interpret::GlobalId>, rustc_middle::query::erase::ErasedData<[u8; 24]>>, false>
25: rustc_query_impl::query_impl::eval_to_const_value_raw::execute_query_non_incr::__rust_end_short_backtrace
26: <rustc_middle::ty::context::TyCtxt>::const_eval_resolve
27: <rustc_middle::mir::consts::Const>::eval
28: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::init_stack_frame
29: <rustc_const_eval::interpret::eval_context::InterpCx<rustc_const_eval::const_eval::machine::CompileTimeMachine>>::init_fn_call
30: rustc_const_eval::const_eval::eval_queries::eval_to_allocation_raw_provider
31: rustc_query_impl::query_impl::eval_to_allocation_raw::invoke_provider_fn::__rust_begin_short_backtrace
32: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::mir::interpret::GlobalId>, rustc_middle::query::erase::ErasedData<[u8; 24]>>, false>
33: rustc_query_impl::query_impl::eval_to_allocation_raw::execute_query_non_incr::__rust_end_short_backtrace
34: rustc_const_eval::const_eval::valtrees::eval_to_valtree
35: <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
36: rustc_query_impl::query_impl::eval_to_valtree::invoke_provider_fn::__rust_begin_short_backtrace
37: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::mir::interpret::GlobalId>, rustc_middle::query::erase::ErasedData<[u8; 16]>>, false>
38: rustc_query_impl::query_impl::eval_to_valtree::execute_query_non_incr::__rust_end_short_backtrace
39: <rustc_middle::ty::context::TyCtxt>::const_eval_resolve_for_typeck
40: rustc_trait_selection::traits::try_evaluate_const
41: <rustc_trait_selection::solve::delegate::SolverDelegate as rustc_next_trait_solver::delegate::SolverDelegate>::evaluate_const
42: <rustc_next_trait_solver::solve::search_graph::SearchGraphDelegate<rustc_trait_selection::solve::delegate::SolverDelegate> as rustc_type_ir::search_graph::Delegate>::compute_goal::{closure#0}
43: <rustc_type_ir::search_graph::SearchGraph<rustc_next_trait_solver::solve::search_graph::SearchGraphDelegate<rustc_trait_selection::solve::delegate::SolverDelegate>, rustc_middle::ty::context::TyCtxt>>::evaluate_goal::{closure#0}::{closure#2}
44: <rustc_next_trait_solver::solve::eval_ctxt::EvalCtxt<rustc_trait_selection::solve::delegate::SolverDelegate, rustc_middle::ty::context::TyCtxt>>::evaluate_goal_raw
45: <rustc_next_trait_solver::solve::eval_ctxt::EvalCtxt<rustc_trait_selection::solve::delegate::SolverDelegate, rustc_middle::ty::context::TyCtxt>>::try_evaluate_added_goals
46: <rustc_next_trait_solver::solve::search_graph::SearchGraphDelegate<rustc_trait_selection::solve::delegate::SolverDelegate> as rustc_type_ir::search_graph::Delegate>::compute_goal::{closure#0}
47: <rustc_type_ir::search_graph::SearchGraph<rustc_next_trait_solver::solve::search_graph::SearchGraphDelegate<rustc_trait_selection::solve::delegate::SolverDelegate>, rustc_middle::ty::context::TyCtxt>>::evaluate_goal::{closure#0}::{closure#2}
48: <rustc_next_trait_solver::solve::eval_ctxt::EvalCtxt<rustc_trait_selection::solve::delegate::SolverDelegate, rustc_middle::ty::context::TyCtxt>>::evaluate_goal_raw
49: <rustc_trait_selection::solve::delegate::SolverDelegate as rustc_next_trait_solver::solve::eval_ctxt::SolverDelegateEvalExt>::evaluate_root_goal
50: <rustc_trait_selection::solve::fulfill::FulfillmentCtxt<rustc_trait_selection::traits::FulfillmentError> as rustc_infer::traits::engine::TraitEngine<rustc_trait_selection::traits::FulfillmentError>>::try_evaluate_obligations
51: <rustc_trait_selection::solve::normalize::NormalizationFolder<rustc_trait_selection::traits::FulfillmentError>>::normalize_alias_term
52: <rustc_trait_selection::solve::normalize::NormalizationFolder<rustc_trait_selection::traits::FulfillmentError> as rustc_type_ir::fold::FallibleTypeFolder<rustc_middle::ty::context::TyCtxt>>::try_fold_const::{closure#0}
53: rustc_hir_analysis::check::wfcheck::check_type_const
54: rustc_hir_analysis::check::check::check_item_type
55: rustc_hir_analysis::check::wfcheck::check_well_formed
56: rustc_query_impl::query_impl::check_well_formed::invoke_provider_fn::__rust_begin_short_backtrace
57: rustc_query_impl::execution::try_execute_query::<rustc_data_structures::vec_cache::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::ErasedData<[u8; 1]>, rustc_middle::dep_graph::graph::DepNodeIndex>, false>
58: rustc_query_impl::query_impl::check_well_formed::execute_query_non_incr::__rust_end_short_backtrace
59: rustc_hir_analysis::check::wfcheck::check_type_wf
60: rustc_query_impl::query_impl::check_type_wf::invoke_provider_fn::__rust_begin_short_backtrace
61: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 1]>>, false>
62: rustc_query_impl::query_impl::check_type_wf::execute_query_non_incr::__rust_end_short_backtrace
63: rustc_hir_analysis::check_crate
64: rustc_interface::passes::analysis
65: rustc_query_impl::execution::try_execute_query::<rustc_middle::query::caches::SingleCache<rustc_middle::query::erase::ErasedData<[u8; 0]>>, false>
66: rustc_query_impl::query_impl::analysis::execute_query_non_incr::__rust_end_short_backtrace
67: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
68: 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}, ()>
69: <std::thread::lifecycle::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}
70: <std::sys::thread::unix::Thread>::new::thread_start
71: <unknown>
72: <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: rustc 1.96.0-nightly (5bbdeaa9a 2026-04-03) running on x86_64-unknown-linux-gnu
note: compiler flags: -Z next-solver=globally -Z crate-attr=feature(generic_const_args) -Z dump-mir-dir=dir
query stack during panic:
end of query stack
auto-reduced (treereduce-rust):
original:
Version information
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc -Znext-solver=globally -Zcrate-attr=feature(generic_const_args)Program output
@rustbot label +F-min_generic_const_args +F-generic_const_items +F-generic_const_args +WG-trait-system-refactor