thread 'rustc' panicked at /rustc/9d83ac217957eece2189eccf4a7232caec7232ee/compiler/rustc_errors/src/lib.rs:1661:9:
Box<dyn Any>
stack backtrace:
   0:        0x102f1b3f0 - std::backtrace::Backtrace::create::h2feee453364ea760
   1:        0x10bcf1eac - <alloc[6976fb96cd38c50]::boxed::Box<rustc_driver_impl[64f83dff39c374ae]::install_ice_hook::{closure#0}> as core[d9e5c436b7fa2511]::ops::function::Fn<(&dyn for<'a, 'b> core[d9e5c436b7fa2511]::ops::function::Fn<(&'a core[d9e5c436b7fa2511]::panic::panic_info::PanicInfo<'b>,), Output = ()> + core[d9e5c436b7fa2511]::marker::Send + core[d9e5c436b7fa2511]::marker::Sync, &core[d9e5c436b7fa2511]::panic::panic_info::PanicInfo)>>::call
   2:        0x102f3316c - std::panicking::rust_panic_with_hook::h130fbf332c6cdd6d
   3:        0x10c680964 - std[445e387e9aba505f]::panicking::begin_panic::<rustc_errors[c55e65e1258c6d06]::ExplicitBug>::{closure#0}
   4:        0x10c67f340 - std[445e387e9aba505f]::sys_common::backtrace::__rust_end_short_backtrace::<std[445e387e9aba505f]::panicking::begin_panic<rustc_errors[c55e65e1258c6d06]::ExplicitBug>::{closure#0}, !>
   5:        0x10f8e4ae0 - std[445e387e9aba505f]::panicking::begin_panic::<rustc_errors[c55e65e1258c6d06]::ExplicitBug>
   6:        0x10c653450 - <rustc_errors[c55e65e1258c6d06]::HandlerInner>::bug::<alloc[6976fb96cd38c50]::string::String>
   7:        0x10c653258 - <rustc_errors[c55e65e1258c6d06]::Handler>::bug::<alloc[6976fb96cd38c50]::string::String>
   8:        0x10c776790 - rustc_middle[60e9a44f7a592fc2]::util::bug::opt_span_bug_fmt::<rustc_span[4a0b636bfafc9c3]::span_encoding::Span>::{closure#0}
   9:        0x10c76da4c - rustc_middle[60e9a44f7a592fc2]::ty::context::tls::with_opt::<rustc_middle[60e9a44f7a592fc2]::util::bug::opt_span_bug_fmt<rustc_span[4a0b636bfafc9c3]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  10:        0x10c76da18 - rustc_middle[60e9a44f7a592fc2]::ty::context::tls::with_context_opt::<rustc_middle[60e9a44f7a592fc2]::ty::context::tls::with_opt<rustc_middle[60e9a44f7a592fc2]::util::bug::opt_span_bug_fmt<rustc_span[4a0b636bfafc9c3]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  11:        0x10f8f2018 - rustc_middle[60e9a44f7a592fc2]::util::bug::bug_fmt
  12:        0x10f8ea78c - <rustc_middle[60e9a44f7a592fc2]::ty::generic_args::ArgFolder>::const_param_out_of_range
  13:        0x10c712e10 - <rustc_middle[60e9a44f7a592fc2]::ty::generic_args::ArgFolder as rustc_type_ir[f5b2f2ee10dd83e3]::fold::TypeFolder<rustc_middle[60e9a44f7a592fc2]::ty::context::TyCtxt>>::fold_const
  14:        0x10c76eab0 - <rustc_middle[60e9a44f7a592fc2]::ty::Ty as rustc_type_ir[f5b2f2ee10dd83e3]::fold::TypeSuperFoldable<rustc_middle[60e9a44f7a592fc2]::ty::context::TyCtxt>>::try_super_fold_with::<rustc_middle[60e9a44f7a592fc2]::ty::generic_args::ArgFolder>
  15:        0x10c68ca28 - <&rustc_middle[60e9a44f7a592fc2]::ty::list::List<rustc_middle[60e9a44f7a592fc2]::ty::generic_args::GenericArg> as rustc_type_ir[f5b2f2ee10dd83e3]::fold::TypeFoldable<rustc_middle[60e9a44f7a592fc2]::ty::context::TyCtxt>>::try_fold_with::<rustc_middle[60e9a44f7a592fc2]::ty::generic_args::ArgFolder>
  16:        0x10c6fa010 - <rustc_type_ir[f5b2f2ee10dd83e3]::predicate_kind::ClauseKind<rustc_middle[60e9a44f7a592fc2]::ty::context::TyCtxt> as rustc_type_ir[f5b2f2ee10dd83e3]::fold::TypeFoldable<rustc_middle[60e9a44f7a592fc2]::ty::context::TyCtxt>>::try_fold_with::<rustc_middle[60e9a44f7a592fc2]::ty::generic_args::ArgFolder>
  17:        0x10c6fa888 - <rustc_type_ir[f5b2f2ee10dd83e3]::predicate_kind::PredicateKind<rustc_middle[60e9a44f7a592fc2]::ty::context::TyCtxt> as rustc_type_ir[f5b2f2ee10dd83e3]::fold::TypeFoldable<rustc_middle[60e9a44f7a592fc2]::ty::context::TyCtxt>>::try_fold_with::<rustc_middle[60e9a44f7a592fc2]::ty::generic_args::ArgFolder>
  18:        0x10c7619f4 - <rustc_middle[60e9a44f7a592fc2]::ty::Predicate as rustc_type_ir[f5b2f2ee10dd83e3]::fold::TypeSuperFoldable<rustc_middle[60e9a44f7a592fc2]::ty::context::TyCtxt>>::super_fold_with::<rustc_middle[60e9a44f7a592fc2]::ty::generic_args::ArgFolder>
  19:        0x10c6979fc - <rustc_middle[60e9a44f7a592fc2]::ty::generics::GenericPredicates>::instantiate_into
  20:        0x10d1fedc4 - <rustc_trait_selection[20765d819e279547]::traits::wf::WfPredicates>::nominal_obligations
  21:        0x10d1fdce8 - <rustc_trait_selection[20765d819e279547]::traits::wf::WfPredicates>::compute
  22:        0x10d1fafe8 - rustc_trait_selection[20765d819e279547]::traits::wf::obligations
  23:        0x10d1fca5c - <rustc_trait_selection[20765d819e279547]::traits::fulfill::FulfillProcessor as rustc_data_structures[d0d9fd49f16e47e]::obligation_forest::ObligationProcessor>::process_obligation
  24:        0x10d32cf8c - <rustc_data_structures[d0d9fd49f16e47e]::obligation_forest::ObligationForest<rustc_trait_selection[20765d819e279547]::traits::fulfill::PendingPredicateObligation>>::process_obligations::<rustc_trait_selection[20765d819e279547]::traits::fulfill::FulfillProcessor>
  25:        0x10d1f9210 - <rustc_trait_selection[20765d819e279547]::traits::fulfill::FulfillmentContext as rustc_infer[8b7d97ee9fa22e77]::traits::engine::TraitEngine>::select_where_possible
  26:        0x10d36c6bc - <rustc_infer[8b7d97ee9fa22e77]::infer::at::At as rustc_trait_selection[20765d819e279547]::traits::project::NormalizeExt>::deeply_normalize::<rustc_middle[60e9a44f7a592fc2]::ty::Ty>
  27:        0x10d1d7af4 - <rustc_trait_selection[20765d819e279547]::traits::engine::ObligationCtxt>::assumed_wf_types
  28:        0x10c027f44 - rustc_hir_analysis[547b6125a0805be3]::check::wfcheck::check_associated_item
  29:        0x10c01ce88 - rustc_hir_analysis[547b6125a0805be3]::check::wfcheck::check_well_formed
  30:        0x10cda2028 - rustc_query_impl[119047522f02295c]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[119047522f02295c]::query_impl::check_well_formed::dynamic_query::{closure#2}::{closure#0}, rustc_middle[60e9a44f7a592fc2]::query::erase::Erased<[u8; 1usize]>>
  31:        0x10ce4f348 - <rustc_query_impl[119047522f02295c]::query_impl::check_well_formed::dynamic_query::{closure#2} as core[d9e5c436b7fa2511]::ops::function::FnOnce<(rustc_middle[60e9a44f7a592fc2]::ty::context::TyCtxt, rustc_hir[b135f998e98d7cf8]::hir_id::OwnerId)>>::call_once
  32:        0x10cd63388 - rustc_query_system[bddff3f00126116c]::query::plumbing::try_execute_query::<rustc_query_impl[119047522f02295c]::DynamicConfig<rustc_query_system[bddff3f00126116c]::query::caches::VecCache<rustc_hir[b135f998e98d7cf8]::hir_id::OwnerId, rustc_middle[60e9a44f7a592fc2]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[119047522f02295c]::plumbing::QueryCtxt, true>
  33:        0x10cdf7148 - rustc_query_impl[119047522f02295c]::query_impl::check_well_formed::get_query_incr::__rust_end_short_backtrace
  34:        0x10c02f33c - <rustc_data_structures[d0d9fd49f16e47e]::sync::parallel::ParallelGuard>::run::<core[d9e5c436b7fa2511]::result::Result<(), rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed>, rustc_data_structures[d0d9fd49f16e47e]::sync::parallel::disabled::try_par_for_each_in<&[rustc_hir[b135f998e98d7cf8]::hir::TraitItemId], rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed, <rustc_middle[60e9a44f7a592fc2]::hir::ModuleItems>::par_trait_items<rustc_hir_analysis[547b6125a0805be3]::check::wfcheck::check_mod_type_wf::{closure#2}>::{closure#0}>::{closure#0}::{closure#0}::{closure#0}>
  35:        0x10c018b44 - rustc_data_structures[d0d9fd49f16e47e]::sync::parallel::disabled::try_par_for_each_in::<&[rustc_hir[b135f998e98d7cf8]::hir::ImplItemId], rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed, <rustc_middle[60e9a44f7a592fc2]::hir::ModuleItems>::par_impl_items<rustc_hir_analysis[547b6125a0805be3]::check::wfcheck::check_mod_type_wf::{closure#1}>::{closure#0}>
  36:        0x10c02358c - rustc_hir_analysis[547b6125a0805be3]::check::wfcheck::check_mod_type_wf
  37:        0x10cda2008 - rustc_query_impl[119047522f02295c]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[119047522f02295c]::query_impl::check_mod_type_wf::dynamic_query::{closure#2}::{closure#0}, rustc_middle[60e9a44f7a592fc2]::query::erase::Erased<[u8; 1usize]>>
  38:        0x10ce4f094 - <rustc_query_impl[119047522f02295c]::query_impl::check_mod_type_wf::dynamic_query::{closure#2} as core[d9e5c436b7fa2511]::ops::function::FnOnce<(rustc_middle[60e9a44f7a592fc2]::ty::context::TyCtxt, rustc_span[4a0b636bfafc9c3]::def_id::LocalModDefId)>>::call_once
  39:        0x10cd33490 - rustc_query_system[bddff3f00126116c]::query::plumbing::try_execute_query::<rustc_query_impl[119047522f02295c]::DynamicConfig<rustc_query_system[bddff3f00126116c]::query::caches::DefaultCache<rustc_span[4a0b636bfafc9c3]::def_id::LocalModDefId, rustc_middle[60e9a44f7a592fc2]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[119047522f02295c]::plumbing::QueryCtxt, true>
  40:        0x10cde80fc - rustc_query_impl[119047522f02295c]::query_impl::check_mod_type_wf::get_query_incr::__rust_end_short_backtrace
  41:        0x10c02f5c8 - <rustc_data_structures[d0d9fd49f16e47e]::sync::parallel::ParallelGuard>::run::<core[d9e5c436b7fa2511]::result::Result<(), rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed>, rustc_data_structures[d0d9fd49f16e47e]::sync::parallel::disabled::try_par_for_each_in<&[rustc_hir[b135f998e98d7cf8]::hir_id::OwnerId], rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed, <rustc_middle[60e9a44f7a592fc2]::hir::map::Map>::try_par_for_each_module<rustc_hir_analysis[547b6125a0805be3]::check_crate::{closure#4}::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}::{closure#0}>
  42:        0x10c0125c8 - <rustc_session[923a8d059042d934]::session::Session>::time::<core[d9e5c436b7fa2511]::result::Result<(), rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed>, rustc_hir_analysis[547b6125a0805be3]::check_crate::{closure#4}>
  43:        0x10c045af4 - rustc_hir_analysis[547b6125a0805be3]::check_crate
  44:        0x10c372d4c - rustc_interface[ff8256179d10224c]::passes::analysis
  45:        0x10cda501c - rustc_query_impl[119047522f02295c]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[119047522f02295c]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[60e9a44f7a592fc2]::query::erase::Erased<[u8; 1usize]>>
  46:        0x10ce52594 - <rustc_query_impl[119047522f02295c]::query_impl::analysis::dynamic_query::{closure#2} as core[d9e5c436b7fa2511]::ops::function::FnOnce<(rustc_middle[60e9a44f7a592fc2]::ty::context::TyCtxt, ())>>::call_once
  47:        0x10cd0f654 - rustc_query_system[bddff3f00126116c]::query::plumbing::try_execute_query::<rustc_query_impl[119047522f02295c]::DynamicConfig<rustc_query_system[bddff3f00126116c]::query::caches::SingleCache<rustc_middle[60e9a44f7a592fc2]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[119047522f02295c]::plumbing::QueryCtxt, true>
  48:        0x10cdda080 - rustc_query_impl[119047522f02295c]::query_impl::analysis::get_query_incr::__rust_end_short_backtrace
  49:        0x10bce285c - <rustc_middle[60e9a44f7a592fc2]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[64f83dff39c374ae]::run_compiler::{closure#1}::{closure#2}::{closure#6}, core[d9e5c436b7fa2511]::result::Result<(), rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed>>
  50:        0x10bcfd75c - rustc_span[4a0b636bfafc9c3]::set_source_map::<core[d9e5c436b7fa2511]::result::Result<(), rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed>, rustc_interface[ff8256179d10224c]::interface::run_compiler<core[d9e5c436b7fa2511]::result::Result<(), rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed>, rustc_driver_impl[64f83dff39c374ae]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  51:        0x10bcedea8 - std[445e387e9aba505f]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[ff8256179d10224c]::util::run_in_thread_with_globals<rustc_interface[ff8256179d10224c]::interface::run_compiler<core[d9e5c436b7fa2511]::result::Result<(), rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed>, rustc_driver_impl[64f83dff39c374ae]::run_compiler::{closure#1}>::{closure#0}, core[d9e5c436b7fa2511]::result::Result<(), rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[d9e5c436b7fa2511]::result::Result<(), rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed>>
  52:        0x10bcf0eb0 - <<std[445e387e9aba505f]::thread::Builder>::spawn_unchecked_<rustc_interface[ff8256179d10224c]::util::run_in_thread_with_globals<rustc_interface[ff8256179d10224c]::interface::run_compiler<core[d9e5c436b7fa2511]::result::Result<(), rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed>, rustc_driver_impl[64f83dff39c374ae]::run_compiler::{closure#1}>::{closure#0}, core[d9e5c436b7fa2511]::result::Result<(), rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[d9e5c436b7fa2511]::result::Result<(), rustc_span[4a0b636bfafc9c3]::ErrorGuaranteed>>::{closure#1} as core[d9e5c436b7fa2511]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  53:        0x102f3c204 - std::sys::unix::thread::Thread::new::thread_start::h6ec953440f4c1b30
  54:        0x1a677ffa8 - __pthread_joiner_wake


rustc version: 1.75.0-nightly (9d83ac217 2023-10-31)
platform: aarch64-apple-darwin

query stack during panic:
#0 [check_well_formed] checking that `<impl at src/lib.rs:19:1: 19:31>::nothing` is well-formed
#1 [check_mod_type_wf] checking that types are well-formed in top-level module
#2 [analysis] running analysis passes on this crate
end of query stack