0: std::backtrace::Backtrace::create 1: <rustc_errors::DiagCtxtInner>::emit_diagnostic 2: <rustc_errors::DiagCtxtHandle>::emit_diagnostic 3: <rustc_span::ErrorGuaranteed as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee 4: <rustc_errors::DiagCtxtHandle>::delayed_bug::<&str> 5: rustc_trait_selection::traits::try_evaluate_const 6: <rustc_trait_selection::traits::normalize::AssocTypeNormalizer as rustc_type_ir::fold::TypeFolder<rustc_middle::ty::context::TyCtxt>>::fold_const 7: <&rustc_middle::ty::list::RawList<(), rustc_middle::ty::generic_args::GenericArg> as rustc_type_ir::fold::TypeFoldable<rustc_middle::ty::context::TyCtxt>>::try_fold_with::<rustc_trait_selection::traits::normalize::AssocTypeNormalizer> 8: <rustc_middle::ty::Ty as rustc_type_ir::fold::TypeSuperFoldable<rustc_middle::ty::context::TyCtxt>>::try_super_fold_with::<rustc_trait_selection::traits::normalize::AssocTypeNormalizer> 9: <rustc_infer::infer::at::At as rustc_trait_selection::traits::normalize::NormalizeExt>::normalize::<rustc_middle::ty::Ty> 10: <rustc_hir_typeck::fn_ctxt::FnCtxt>::normalize::<rustc_middle::ty::Ty> 11: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_struct_fields 12: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_kind 13: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args 14: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_decl 15: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_block 16: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args 17: <rustc_hir_typeck::fn_ctxt::FnCtxt>::check_return_or_body_tail 18: rustc_hir_typeck::check::check_fn 19: rustc_hir_typeck::typeck_with_inspect::{closure#0} 20: rustc_hir_typeck::typeck 21: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::typeck::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 8]>> 22: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_data_structures::vec_cache::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, true> 23: rustc_query_impl::query_impl::typeck::get_query_incr::__rust_end_short_backtrace 24: <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners::<rustc_hir_analysis::check_crate::{closure#3}>::{closure#0} 25: rustc_hir_analysis::check_crate 26: rustc_interface::passes::run_required_analyses 27: rustc_interface::passes::analysis 28: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 0]>> 29: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, true> 30: rustc_query_impl::query_impl::analysis::get_query_incr::__rust_end_short_backtrace 31: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}> 32: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1} 33: 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}, ()> 34: <<std::thread::Builder>::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} 35: std::sys::pal::unix::thread::Thread::new::thread_start 36: __pthread_cond_wait