error: associated type in `impl` without body --> a.rs:8:5 | 8 | type c; | ^^^^^^- | | | help: provide a definition for the type: `= <type>;` error[E0407]: method `b` is not a member of trait `Drop` --> a.rs:5:5 | 5 | fn b() {} | ^^^^^^^^^ not a member of trait `Drop` error[E0437]: type `c` is not a member of trait `AsyncDrop` --> a.rs:8:5 | 8 | type c; | ^^^^^^^ not a member of trait `AsyncDrop` warning: the feature `async_drop` is incomplete and may not be safe to use and/or cause compiler crashes --> a.rs:1:12 | 1 | #![feature(async_drop)] | ^^^^^^^^^^ | = note: see issue #126482 <https://github.com/rust-lang/rust/issues/126482> for more information = note: `#[warn(incomplete_features)]` on by default warning: type `a` should have an upper camel case name --> a.rs:3:8 | 3 | struct a; | ^ help: convert the identifier to upper camel case: `A` | = note: `#[warn(non_camel_case_types)]` on by default error[E0601]: `main` function not found in crate `a` --> a.rs:12:2 | 12 | } | ^ consider adding a `main` function to `a.rs` error[E0046]: not all trait items implemented, missing: `drop` --> a.rs:4:1 | 4 | impl Drop for a { | ^^^^^^^^^^^^^^^ missing `drop` in implementation | = help: implement the missing item: `fn drop(&mut self) { todo!() }` error[E0046]: not all trait items implemented, missing: `drop` --> a.rs:7:1 | 7 | impl AsyncDrop for a { | ^^^^^^^^^^^^^^^^^^^^ missing `drop` in implementation | = help: implement the missing item: `async fn drop(self: Pin<&mut Self>) { todo!() }` error: internal compiler error: compiler/rustc_hir_analysis/src/collect.rs:1376:13: unexpected sort of node in fn_sig(): ImplItem(ImplItem { ident: c#0, owner_id: DefId(0:9 ~ a[0319]::{impl#1}::c), generics: Generics { params: [], predicates: [], has_where_clause_predicates: false, where_clause_span: a.rs:8:11: 8:11 (#0), span: a.rs:8:11: 8:11 (#0) }, kind: Type(Ty { hir_id: HirId(DefId(0:9 ~ a[0319]::{impl#1}::c).1), span: a.rs:8:5: 8:12 (#0), kind: Err(ErrorGuaranteed(())) }), defaultness: Final, span: a.rs:8:5: 8:12 (#0), vis_span: a.rs:8:5: 8:5 (#0) }) thread 'rustc' panicked at compiler/rustc_hir_analysis/src/collect.rs:1376:13: Box<dyn Any> stack backtrace: 0: 0x79c4c7109413 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hd74fdb4a7f001d5e 1: 0x79c4c78059c7 - core::fmt::write::h39cdbee3ed36675d 2: 0x79c4c8c45111 - std::io::Write::write_fmt::h3d221ff56818d1dd 3: 0x79c4c7109272 - std::sys::backtrace::BacktraceLock::print::he77ca3c0db1e98a1 4: 0x79c4c710d0ba - std::panicking::default_hook::{{closure}}::h239a47c5c2a6a6da 5: 0x79c4c710cc3f - std::panicking::default_hook::h2c7c14ab2f340054 6: 0x79c4c6185883 - std[96024a80e4ce12a0]::panicking::update_hook::<alloc[703cfcb04acfdfda]::boxed::Box<rustc_driver_impl[a2bbb3d7e654019c]::install_ice_hook::{closure#1}>>::{closure#0} 7: 0x79c4c710d933 - std::panicking::rust_panic_with_hook::h7afddb00f409503c 8: 0x79c4c61c1241 - std[96024a80e4ce12a0]::panicking::begin_panic::<rustc_errors[c4bb5e76f42fc126]::ExplicitBug>::{closure#0} 9: 0x79c4c61b5116 - std[96024a80e4ce12a0]::sys::backtrace::__rust_end_short_backtrace::<std[96024a80e4ce12a0]::panicking::begin_panic<rustc_errors[c4bb5e76f42fc126]::ExplicitBug>::{closure#0}, !> 10: 0x79c4c61b5103 - std[96024a80e4ce12a0]::panicking::begin_panic::<rustc_errors[c4bb5e76f42fc126]::ExplicitBug> 11: 0x79c4c61cb8a1 - <rustc_errors[c4bb5e76f42fc126]::diagnostic::BugAbort as rustc_errors[c4bb5e76f42fc126]::diagnostic::EmissionGuarantee>::emit_producing_guarantee 12: 0x79c4c6802f9a - rustc_middle[41c039613f3f9b63]::util::bug::opt_span_bug_fmt::<rustc_span[bce202135c071ebd]::span_encoding::Span>::{closure#0} 13: 0x79c4c67de82a - rustc_middle[41c039613f3f9b63]::ty::context::tls::with_opt::<rustc_middle[41c039613f3f9b63]::util::bug::opt_span_bug_fmt<rustc_span[bce202135c071ebd]::span_encoding::Span>::{closure#0}, !>::{closure#0} 14: 0x79c4c67de69b - rustc_middle[41c039613f3f9b63]::ty::context::tls::with_context_opt::<rustc_middle[41c039613f3f9b63]::ty::context::tls::with_opt<rustc_middle[41c039613f3f9b63]::util::bug::opt_span_bug_fmt<rustc_span[bce202135c071ebd]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !> 15: 0x79c4c3a8db60 - rustc_middle[41c039613f3f9b63]::util::bug::bug_fmt 16: 0x79c4c7e6024e - rustc_hir_analysis[c9504cb83f49b87f]::collect::fn_sig 17: 0x79c4c7c1e8d7 - rustc_query_impl[b776171e91563e8b]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b776171e91563e8b]::query_impl::fn_sig::dynamic_query::{closure#2}::{closure#0}, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 24usize]>> 18: 0x79c4c7c1e8a3 - <rustc_query_impl[b776171e91563e8b]::query_impl::fn_sig::dynamic_query::{closure#2} as core[6d7144d1d4266374]::ops::function::FnOnce<(rustc_middle[41c039613f3f9b63]::ty::context::TyCtxt, rustc_span[bce202135c071ebd]::def_id::DefId)>>::call_once 19: 0x79c4c7c2064d - rustc_query_system[aa926e5a14f6203b]::query::plumbing::try_execute_query::<rustc_query_impl[b776171e91563e8b]::DynamicConfig<rustc_query_system[aa926e5a14f6203b]::query::caches::DefIdCache<rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[b776171e91563e8b]::plumbing::QueryCtxt, false> 20: 0x79c4c7c1fd62 - rustc_query_impl[b776171e91563e8b]::query_impl::fn_sig::get_query_non_incr::__rust_end_short_backtrace 21: 0x79c4c7835a44 - <rustc_middle[41c039613f3f9b63]::ty::Ty>::fn_sig 22: 0x79c4c6966f82 - <rustc_mir_transform[a7f95fd82d5de946]::elaborate_drop::DropCtxt<rustc_mir_transform[a7f95fd82d5de946]::shim::DropShimElaborator>>::build_async_drop 23: 0x79c4c832f206 - <rustc_mir_transform[a7f95fd82d5de946]::elaborate_drop::DropCtxt<rustc_mir_transform[a7f95fd82d5de946]::shim::DropShimElaborator>>::elaborate_drop 24: 0x79c4c8328ab5 - rustc_mir_transform[a7f95fd82d5de946]::shim::make_shim 25: 0x79c4c8326aef - rustc_query_impl[b776171e91563e8b]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b776171e91563e8b]::query_impl::mir_shims::dynamic_query::{closure#2}::{closure#0}, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 8usize]>> 26: 0x79c4c8326aa7 - <rustc_query_impl[b776171e91563e8b]::query_impl::mir_shims::dynamic_query::{closure#2} as core[6d7144d1d4266374]::ops::function::FnOnce<(rustc_middle[41c039613f3f9b63]::ty::context::TyCtxt, rustc_middle[41c039613f3f9b63]::ty::instance::InstanceKind)>>::call_once 27: 0x79c4c81d8b16 - rustc_query_system[aa926e5a14f6203b]::query::plumbing::try_execute_query::<rustc_query_impl[b776171e91563e8b]::DynamicConfig<rustc_query_system[aa926e5a14f6203b]::query::caches::DefaultCache<rustc_middle[41c039613f3f9b63]::ty::instance::InstanceKind, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[b776171e91563e8b]::plumbing::QueryCtxt, false> 28: 0x79c4c81d882f - rustc_query_impl[b776171e91563e8b]::query_impl::mir_shims::get_query_non_incr::__rust_end_short_backtrace 29: 0x79c4c67ffe00 - <rustc_middle[41c039613f3f9b63]::ty::context::TyCtxt>::coroutine_layout 30: 0x79c4c7f4bf0b - rustc_ty_utils[ed0597263d4f78c7]::layout::layout_of 31: 0x79c4c7f3fb2a - rustc_query_impl[b776171e91563e8b]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b776171e91563e8b]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 16usize]>> 32: 0x79c4c7f3e91f - rustc_query_system[aa926e5a14f6203b]::query::plumbing::try_execute_query::<rustc_query_impl[b776171e91563e8b]::DynamicConfig<rustc_query_system[aa926e5a14f6203b]::query::caches::DefaultCache<rustc_middle[41c039613f3f9b63]::ty::PseudoCanonicalInput<rustc_middle[41c039613f3f9b63]::ty::Ty>, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 16usize]>>, false, true, false>, rustc_query_impl[b776171e91563e8b]::plumbing::QueryCtxt, false> 33: 0x79c4c7f3e55e - rustc_query_impl[b776171e91563e8b]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace 34: 0x79c4c7f3a796 - <core[6d7144d1d4266374]::iter::adapters::GenericShunt<core[6d7144d1d4266374]::iter::adapters::by_ref_sized::ByRefSized<core[6d7144d1d4266374]::iter::adapters::map::Map<core[6d7144d1d4266374]::slice::iter::Iter<rustc_middle[41c039613f3f9b63]::ty::VariantDef>, rustc_ty_utils[ed0597263d4f78c7]::layout::layout_of_uncached::{closure#19}>>, core[6d7144d1d4266374]::result::Result<core[6d7144d1d4266374]::convert::Infallible, &rustc_middle[41c039613f3f9b63]::ty::layout::LayoutError>> as core[6d7144d1d4266374]::iter::traits::iterator::Iterator>::next 35: 0x79c4c7f4114c - rustc_ty_utils[ed0597263d4f78c7]::layout::layout_of 36: 0x79c4c7f3fb2a - rustc_query_impl[b776171e91563e8b]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b776171e91563e8b]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 16usize]>> 37: 0x79c4c7f3e91f - rustc_query_system[aa926e5a14f6203b]::query::plumbing::try_execute_query::<rustc_query_impl[b776171e91563e8b]::DynamicConfig<rustc_query_system[aa926e5a14f6203b]::query::caches::DefaultCache<rustc_middle[41c039613f3f9b63]::ty::PseudoCanonicalInput<rustc_middle[41c039613f3f9b63]::ty::Ty>, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 16usize]>>, false, true, false>, rustc_query_impl[b776171e91563e8b]::plumbing::QueryCtxt, false> 38: 0x79c4c7f3e55e - rustc_query_impl[b776171e91563e8b]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace 39: 0x79c4c7f3ab46 - <core[6d7144d1d4266374]::iter::adapters::GenericShunt<core[6d7144d1d4266374]::iter::adapters::by_ref_sized::ByRefSized<core[6d7144d1d4266374]::iter::adapters::map::Map<core[6d7144d1d4266374]::slice::iter::Iter<rustc_middle[41c039613f3f9b63]::ty::VariantDef>, rustc_ty_utils[ed0597263d4f78c7]::layout::layout_of_uncached::{closure#19}>>, core[6d7144d1d4266374]::result::Result<core[6d7144d1d4266374]::convert::Infallible, &rustc_middle[41c039613f3f9b63]::ty::layout::LayoutError>> as core[6d7144d1d4266374]::iter::traits::iterator::Iterator>::next 40: 0x79c4c7f4114c - rustc_ty_utils[ed0597263d4f78c7]::layout::layout_of 41: 0x79c4c7f3fb2a - rustc_query_impl[b776171e91563e8b]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b776171e91563e8b]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 16usize]>> 42: 0x79c4c7f3e91f - rustc_query_system[aa926e5a14f6203b]::query::plumbing::try_execute_query::<rustc_query_impl[b776171e91563e8b]::DynamicConfig<rustc_query_system[aa926e5a14f6203b]::query::caches::DefaultCache<rustc_middle[41c039613f3f9b63]::ty::PseudoCanonicalInput<rustc_middle[41c039613f3f9b63]::ty::Ty>, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 16usize]>>, false, true, false>, rustc_query_impl[b776171e91563e8b]::plumbing::QueryCtxt, false> 43: 0x79c4c7f3e55e - rustc_query_impl[b776171e91563e8b]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace 44: 0x79c4c7f47afe - rustc_ty_utils[ed0597263d4f78c7]::layout::layout_of 45: 0x79c4c7f3fb2a - rustc_query_impl[b776171e91563e8b]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b776171e91563e8b]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 16usize]>> 46: 0x79c4c7f3e91f - rustc_query_system[aa926e5a14f6203b]::query::plumbing::try_execute_query::<rustc_query_impl[b776171e91563e8b]::DynamicConfig<rustc_query_system[aa926e5a14f6203b]::query::caches::DefaultCache<rustc_middle[41c039613f3f9b63]::ty::PseudoCanonicalInput<rustc_middle[41c039613f3f9b63]::ty::Ty>, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 16usize]>>, false, true, false>, rustc_query_impl[b776171e91563e8b]::plumbing::QueryCtxt, false> 47: 0x79c4c7f3e55e - rustc_query_impl[b776171e91563e8b]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace 48: 0x79c4c7f39c09 - <rustc_middle[41c039613f3f9b63]::ty::layout::LayoutCx as rustc_middle[41c039613f3f9b63]::ty::layout::LayoutOf>::spanned_layout_of 49: 0x79c4c70761f0 - <core[6d7144d1d4266374]::iter::adapters::GenericShunt<core[6d7144d1d4266374]::iter::adapters::by_ref_sized::ByRefSized<core[6d7144d1d4266374]::iter::adapters::map::Map<core[6d7144d1d4266374]::slice::iter::Iter<rustc_middle[41c039613f3f9b63]::mir::query::CoroutineSavedTy>, rustc_ty_utils[ed0597263d4f78c7]::layout::layout_of_uncached::{closure#11}>>, core[6d7144d1d4266374]::result::Result<core[6d7144d1d4266374]::convert::Infallible, &rustc_middle[41c039613f3f9b63]::ty::layout::LayoutError>> as core[6d7144d1d4266374]::iter::traits::iterator::Iterator>::next 50: 0x79c4c705eb7a - core[6d7144d1d4266374]::iter::adapters::try_process::<core[6d7144d1d4266374]::iter::adapters::by_ref_sized::ByRefSized<core[6d7144d1d4266374]::iter::adapters::map::Map<core[6d7144d1d4266374]::slice::iter::Iter<rustc_middle[41c039613f3f9b63]::mir::query::CoroutineSavedTy>, rustc_ty_utils[ed0597263d4f78c7]::layout::layout_of_uncached::{closure#11}>>, rustc_abi[16b420aafa014dd]::layout::ty::TyAndLayout<rustc_middle[41c039613f3f9b63]::ty::Ty>, core[6d7144d1d4266374]::result::Result<core[6d7144d1d4266374]::convert::Infallible, &rustc_middle[41c039613f3f9b63]::ty::layout::LayoutError>, <core[6d7144d1d4266374]::iter::adapters::map::Map<core[6d7144d1d4266374]::slice::iter::Iter<rustc_middle[41c039613f3f9b63]::mir::query::CoroutineSavedTy>, rustc_ty_utils[ed0597263d4f78c7]::layout::layout_of_uncached::{closure#11}> as core[6d7144d1d4266374]::iter::traits::iterator::Iterator>::try_collect<rustc_index[6fcb69c322e18028]::vec::IndexVec<rustc_middle[41c039613f3f9b63]::mir::query::CoroutineSavedLocal, rustc_abi[16b420aafa014dd]::layout::ty::TyAndLayout<rustc_middle[41c039613f3f9b63]::ty::Ty>>>::{closure#0}, rustc_index[6fcb69c322e18028]::vec::IndexVec<rustc_middle[41c039613f3f9b63]::mir::query::CoroutineSavedLocal, rustc_abi[16b420aafa014dd]::layout::ty::TyAndLayout<rustc_middle[41c039613f3f9b63]::ty::Ty>>> 51: 0x79c4c7f4c5c1 - rustc_ty_utils[ed0597263d4f78c7]::layout::layout_of 52: 0x79c4c7f3fb2a - rustc_query_impl[b776171e91563e8b]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b776171e91563e8b]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 16usize]>> 53: 0x79c4c7f3e91f - rustc_query_system[aa926e5a14f6203b]::query::plumbing::try_execute_query::<rustc_query_impl[b776171e91563e8b]::DynamicConfig<rustc_query_system[aa926e5a14f6203b]::query::caches::DefaultCache<rustc_middle[41c039613f3f9b63]::ty::PseudoCanonicalInput<rustc_middle[41c039613f3f9b63]::ty::Ty>, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 16usize]>>, false, true, false>, rustc_query_impl[b776171e91563e8b]::plumbing::QueryCtxt, false> 54: 0x79c4c7f3e55e - rustc_query_impl[b776171e91563e8b]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace 55: 0x79c4c86718f2 - <rustc_mir_transform[a7f95fd82d5de946]::known_panics_lint::KnownPanicsLint as rustc_mir_transform[a7f95fd82d5de946]::pass_manager::MirLint>::run_lint 56: 0x79c4c780bea7 - rustc_mir_transform[a7f95fd82d5de946]::run_analysis_to_runtime_passes 57: 0x79c4c7d232a5 - rustc_mir_transform[a7f95fd82d5de946]::mir_drops_elaborated_and_const_checked 58: 0x79c4c7d22c75 - rustc_query_impl[b776171e91563e8b]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b776171e91563e8b]::query_impl::mir_drops_elaborated_and_const_checked::dynamic_query::{closure#2}::{closure#0}, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 8usize]>> 59: 0x79c4c7a2402c - rustc_query_system[aa926e5a14f6203b]::query::plumbing::try_execute_query::<rustc_query_impl[b776171e91563e8b]::DynamicConfig<rustc_data_structures[9557117c3f8f3a0]::vec_cache::VecCache<rustc_span[bce202135c071ebd]::def_id::LocalDefId, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[aa926e5a14f6203b]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[b776171e91563e8b]::plumbing::QueryCtxt, false> 60: 0x79c4c7a2390b - rustc_query_impl[b776171e91563e8b]::query_impl::mir_drops_elaborated_and_const_checked::get_query_non_incr::__rust_end_short_backtrace 61: 0x79c4c8206c58 - rustc_interface[269edf8a537b00a5]::passes::run_required_analyses 62: 0x79c4c86a915e - rustc_interface[269edf8a537b00a5]::passes::analysis 63: 0x79c4c86a9133 - rustc_query_impl[b776171e91563e8b]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b776171e91563e8b]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 0usize]>> 64: 0x79c4c86aec3d - rustc_query_system[aa926e5a14f6203b]::query::plumbing::try_execute_query::<rustc_query_impl[b776171e91563e8b]::DynamicConfig<rustc_query_system[aa926e5a14f6203b]::query::caches::SingleCache<rustc_middle[41c039613f3f9b63]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[b776171e91563e8b]::plumbing::QueryCtxt, false> 65: 0x79c4c86ae938 - rustc_query_impl[b776171e91563e8b]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace 66: 0x79c4c878f3be - rustc_interface[269edf8a537b00a5]::passes::create_and_enter_global_ctxt::<core[6d7144d1d4266374]::option::Option<rustc_interface[269edf8a537b00a5]::queries::Linker>, rustc_driver_impl[a2bbb3d7e654019c]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0} 67: 0x79c4c88eceb9 - rustc_interface[269edf8a537b00a5]::interface::run_compiler::<(), rustc_driver_impl[a2bbb3d7e654019c]::run_compiler::{closure#0}>::{closure#1} 68: 0x79c4c8701728 - std[96024a80e4ce12a0]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[269edf8a537b00a5]::util::run_in_thread_with_globals<rustc_interface[269edf8a537b00a5]::util::run_in_thread_pool_with_globals<rustc_interface[269edf8a537b00a5]::interface::run_compiler<(), rustc_driver_impl[a2bbb3d7e654019c]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> 69: 0x79c4c8701b74 - <<std[96024a80e4ce12a0]::thread::Builder>::spawn_unchecked_<rustc_interface[269edf8a537b00a5]::util::run_in_thread_with_globals<rustc_interface[269edf8a537b00a5]::util::run_in_thread_pool_with_globals<rustc_interface[269edf8a537b00a5]::interface::run_compiler<(), rustc_driver_impl[a2bbb3d7e654019c]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[6d7144d1d4266374]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} 70: 0x79c4c8702f77 - std::sys::pal::unix::thread::Thread::new::thread_start::h7eeb46109c9d7745 71: 0x79c4c26a370a - <unknown> 72: 0x79c4c2727aac - <unknown> 73: 0x0 - <unknown> note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md note: please make sure that you have updated to the latest nightly note: please attach the file at `/tmp/im2/rustc-ice-2025-04-29T18_40_52-1722496.txt` to your bug report query stack during panic: #0 [fn_sig] computing function signature of `<impl at a.rs:7:1: 7:21>::c` #1 [mir_shims] generating MIR shim for `core::future::async_drop::async_drop_in_place::{closure#0}`, instance=AsyncDropGlue(DefId(2:15313 ~ core[6d71]::future::async_drop::async_drop_in_place::{closure#0}), Coroutine(DefId(2:15313 ~ core[6d71]::future::async_drop::async_drop_in_place::{closure#0}), [a, (), core::future::ResumeTy, (), (), CoroutineWitness(DefId(2:15313 ~ core[6d71]::future::async_drop::async_drop_in_place::{closure#0}), [a]), (*mut a,)])) ... and 7 other queries... use `env RUST_BACKTRACE=1` to see the full query stack error: aborting due to 7 previous errors; 2 warnings emitted Some errors have detailed explanations: E0046, E0407, E0437, E0601. For more information about an error, try `rustc --explain E0046`.