thread 'rustc' panicked at compiler/rustc_infer/src/infer/mod.rs:956:17:
Box<dyn Any>
stack backtrace:
   0:     0x7f2bfcdfbb55 - std::backtrace_rs::backtrace::libunwind::trace::h39aa7bbcf61112e7
                               at /rustc/1cec373f65eb76e8e4b4d1847213cf3ec6c292b6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
   1:     0x7f2bfcdfbb55 - std::backtrace_rs::backtrace::trace_unsynchronized::hc85da789d7f1d5d2
                               at /rustc/1cec373f65eb76e8e4b4d1847213cf3ec6c292b6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f2bfcdfbb55 - std::backtrace::Backtrace::create::hcb33de73690a8229
                               at /rustc/1cec373f65eb76e8e4b4d1847213cf3ec6c292b6/library/std/src/backtrace.rs:331:13
   3:     0x7f2bfcdfbaa5 - std::backtrace::Backtrace::force_capture::hfc740aded7593d99
                               at /rustc/1cec373f65eb76e8e4b4d1847213cf3ec6c292b6/library/std/src/backtrace.rs:312:9
   4:     0x7f2bf986db73 - std[531770c5e2e8d301]::panicking::update_hook::<alloc[d882034972180c03]::boxed::Box<rustc_driver_impl[427e5c398467f86b]::install_ice_hook::{closure#0}>>::{closure#0}
   5:     0x7f2bfce16b2c - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6d2f4133a0440d99
                               at /rustc/1cec373f65eb76e8e4b4d1847213cf3ec6c292b6/library/alloc/src/boxed.rs:2032:9
   6:     0x7f2bfce16b2c - std::panicking::rust_panic_with_hook::h7c86743fcac7c36d
                               at /rustc/1cec373f65eb76e8e4b4d1847213cf3ec6c292b6/library/std/src/panicking.rs:792:13
   7:     0x7f2bf989cf54 - std[531770c5e2e8d301]::panicking::begin_panic::<rustc_errors[1b3eec32e47ffd2f]::ExplicitBug>::{closure#0}
   8:     0x7f2bf9899bd6 - std[531770c5e2e8d301]::sys_common::backtrace::__rust_end_short_backtrace::<std[531770c5e2e8d301]::panicking::begin_panic<rustc_errors[1b3eec32e47ffd2f]::ExplicitBug>::{closure#0}, !>
   9:     0x7f2bf98998b6 - std[531770c5e2e8d301]::panicking::begin_panic::<rustc_errors[1b3eec32e47ffd2f]::ExplicitBug>
  10:     0x7f2bf98a5f81 - <rustc_errors[1b3eec32e47ffd2f]::diagnostic::BugAbort as rustc_errors[1b3eec32e47ffd2f]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
  11:     0x7f2bf9ae55b8 - <rustc_errors[1b3eec32e47ffd2f]::DiagCtxt>::span_bug::<rustc_span[53b55791d064607f]::span_encoding::Span, alloc[d882034972180c03]::string::String>
  12:     0x7f2bf9b1c5fd - rustc_middle[d8712503438341b1]::util::bug::opt_span_bug_fmt::<rustc_span[53b55791d064607f]::span_encoding::Span>::{closure#0}
  13:     0x7f2bf9b1c92a - rustc_middle[d8712503438341b1]::ty::context::tls::with_opt::<rustc_middle[d8712503438341b1]::util::bug::opt_span_bug_fmt<rustc_span[53b55791d064607f]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  14:     0x7f2bf9b0199b - rustc_middle[d8712503438341b1]::ty::context::tls::with_context_opt::<rustc_middle[d8712503438341b1]::ty::context::tls::with_opt<rustc_middle[d8712503438341b1]::util::bug::opt_span_bug_fmt<rustc_span[53b55791d064607f]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  15:     0x7f2bf9b006b7 - rustc_middle[d8712503438341b1]::util::bug::span_bug_fmt::<rustc_span[53b55791d064607f]::span_encoding::Span>
  16:     0x7f2bf7807ce1 - <rustc_trait_selection[27d743aeac5b0616]::traits::fulfill::FulfillProcessor as rustc_data_structures[f4bfcbb9d91a10eb]::obligation_forest::ObligationProcessor>::process_obligation
  17:     0x7f2bfac0d823 - <rustc_data_structures[f4bfcbb9d91a10eb]::obligation_forest::ObligationForest<rustc_trait_selection[27d743aeac5b0616]::traits::fulfill::PendingPredicateObligation>>::process_obligations::<rustc_trait_selection[27d743aeac5b0616]::traits::fulfill::FulfillProcessor>
  18:     0x7f2bfbce0b00 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_method_argument_types
  19:     0x7f2bfb57384a - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  20:     0x7f2bfb56b939 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_decl
  21:     0x7f2bfb56e78d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_block_with_expected
  22:     0x7f2bfb573701 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  23:     0x7f2bfb56d7a6 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_block_with_expected
  24:     0x7f2bfb573701 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  25:     0x7f2bfb8d3ca7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_argument_types
  26:     0x7f2bfac60874 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_call
  27:     0x7f2bfb57321d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  28:     0x7f2bfb5752e7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  29:     0x7f2bfb8d3ca7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_argument_types
  30:     0x7f2bfac60874 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_call
  31:     0x7f2bfb57321d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  32:     0x7f2bfb8d3ca7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_argument_types
  33:     0x7f2bfac60874 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_call
  34:     0x7f2bfb57321d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  35:     0x7f2bfae54821 - rustc_hir_typeck[77e1cc157524533d]::check::check_fn
  36:     0x7f2bfb3d445e - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_closure
  37:     0x7f2bfb5760b9 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  38:     0x7f2bfb8d3ca7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_argument_types
  39:     0x7f2bfac60874 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_call
  40:     0x7f2bfb57321d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  41:     0x7f2bfb56d7a6 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_block_with_expected
  42:     0x7f2bfb573701 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  43:     0x7f2bfb573732 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  44:     0x7f2bfae54821 - rustc_hir_typeck[77e1cc157524533d]::check::check_fn
  45:     0x7f2bfb3d445e - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_closure
  46:     0x7f2bfb5760b9 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  47:     0x7f2bfb8d3ca7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_argument_types
  48:     0x7f2bfac60874 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_call
  49:     0x7f2bfb57321d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  50:     0x7f2bfb56d7a6 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_block_with_expected
  51:     0x7f2bfb573701 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  52:     0x7f2bfbce0ee1 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_method_argument_types
  53:     0x7f2bfb57384a - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  54:     0x7f2bfb56b939 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_decl
  55:     0x7f2bfb56e78d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_block_with_expected
  56:     0x7f2bfb573701 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  57:     0x7f2bfb56d7a6 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_block_with_expected
  58:     0x7f2bfb573701 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  59:     0x7f2bfb8d3ca7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_argument_types
  60:     0x7f2bfac60874 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_call
  61:     0x7f2bfb57321d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  62:     0x7f2bfb5752e7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  63:     0x7f2bfb8d3ca7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_argument_types
  64:     0x7f2bfac60874 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_call
  65:     0x7f2bfb57321d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  66:     0x7f2bfb8d3ca7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_argument_types
  67:     0x7f2bfac60874 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_call
  68:     0x7f2bfb57321d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  69:     0x7f2bfae54821 - rustc_hir_typeck[77e1cc157524533d]::check::check_fn
  70:     0x7f2bfb3d445e - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_closure
  71:     0x7f2bfb5760b9 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  72:     0x7f2bfb8d3ca7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_argument_types
  73:     0x7f2bfac60874 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_call
  74:     0x7f2bfb57321d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  75:     0x7f2bfb56d7a6 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_block_with_expected
  76:     0x7f2bfb573701 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  77:     0x7f2bfb573732 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  78:     0x7f2bfae54821 - rustc_hir_typeck[77e1cc157524533d]::check::check_fn
  79:     0x7f2bfb3d445e - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_closure
  80:     0x7f2bfb5760b9 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  81:     0x7f2bfb8d3ca7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_argument_types
  82:     0x7f2bfac60874 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_call
  83:     0x7f2bfb57321d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  84:     0x7f2bfb56d7a6 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_block_with_expected
  85:     0x7f2bfb573701 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  86:     0x7f2bfbce0ee1 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_method_argument_types
  87:     0x7f2bfb57384a - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  88:     0x7f2bfb56b939 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_decl
  89:     0x7f2bfb56e78d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_block_with_expected
  90:     0x7f2bfb573701 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  91:     0x7f2bfb56d7a6 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_block_with_expected
  92:     0x7f2bfb573701 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  93:     0x7f2bfb8d3ca7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_argument_types
  94:     0x7f2bfac60874 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_call
  95:     0x7f2bfb57321d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  96:     0x7f2bfb5752e7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  97:     0x7f2bfb8d3ca7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_argument_types
  98:     0x7f2bfac60874 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_call
  99:     0x7f2bfb57321d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
 100:     0x7f2bfb8d3ca7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_argument_types
 101:     0x7f2bfac60874 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_call
 102:     0x7f2bfb57321d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
 103:     0x7f2bfae54821 - rustc_hir_typeck[77e1cc157524533d]::check::check_fn
 104:     0x7f2bfb3d445e - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_closure
 105:     0x7f2bfb5760b9 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
 106:     0x7f2bfb8d3ca7 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_argument_types
 107:     0x7f2bfac60874 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_call
 108:     0x7f2bfb57321d - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
 109:     0x7f2bfb573732 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
 110:     0x7f2bfb56d7a6 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_block_with_expected
 111:     0x7f2bfb573701 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
 112:     0x7f2bfb56d7a6 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_block_with_expected
 113:     0x7f2bfb573701 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
 114:     0x7f2bfb56d7a6 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_block_with_expected
 115:     0x7f2bfb573701 - <rustc_hir_typeck[77e1cc157524533d]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
 116:     0x7f2bfae54821 - rustc_hir_typeck[77e1cc157524533d]::check::check_fn
 117:     0x7f2bfae4ad49 - rustc_hir_typeck[77e1cc157524533d]::typeck
 118:     0x7f2bfae4a709 - rustc_query_impl[ffef2ea0cc82d0dd]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[ffef2ea0cc82d0dd]::query_impl::typeck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 8usize]>>
 119:     0x7f2bfae3a01a - rustc_query_system[219200ddf699f4fc]::query::plumbing::try_execute_query::<rustc_query_impl[ffef2ea0cc82d0dd]::DynamicConfig<rustc_query_system[219200ddf699f4fc]::query::caches::VecCache<rustc_span[53b55791d064607f]::def_id::LocalDefId, rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[ffef2ea0cc82d0dd]::plumbing::QueryCtxt, true>
 120:     0x7f2bfb17b0c9 - rustc_query_impl[ffef2ea0cc82d0dd]::query_impl::typeck::get_query_incr::__rust_end_short_backtrace
 121:     0x7f2bfb2985c4 - rustc_middle[d8712503438341b1]::query::plumbing::query_get_at::<rustc_query_system[219200ddf699f4fc]::query::caches::VecCache<rustc_span[53b55791d064607f]::def_id::LocalDefId, rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 8usize]>>>
 122:     0x7f2bfb9ea658 - rustc_hir_analysis[6a1b22ded269dcc8]::collect::type_of::type_of_opaque
 123:     0x7f2bfb9ea5a9 - rustc_query_impl[ffef2ea0cc82d0dd]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[ffef2ea0cc82d0dd]::query_impl::type_of_opaque::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 8usize]>>
 124:     0x7f2bfadcba88 - rustc_query_system[219200ddf699f4fc]::query::plumbing::try_execute_query::<rustc_query_impl[ffef2ea0cc82d0dd]::DynamicConfig<rustc_query_system[219200ddf699f4fc]::query::caches::DefIdCache<rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[ffef2ea0cc82d0dd]::plumbing::QueryCtxt, true>
 125:     0x7f2bfbc83007 - rustc_query_impl[ffef2ea0cc82d0dd]::query_impl::type_of_opaque::get_query_incr::__rust_end_short_backtrace
 126:     0x7f2bfb29603e - rustc_middle[d8712503438341b1]::query::plumbing::query_get_at::<rustc_query_system[219200ddf699f4fc]::query::caches::DefIdCache<rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 8usize]>>>
 127:     0x7f2bf883422b - rustc_hir_analysis[6a1b22ded269dcc8]::collect::type_of::type_of
 128:     0x7f2bfadd8222 - rustc_query_impl[ffef2ea0cc82d0dd]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[ffef2ea0cc82d0dd]::query_impl::type_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 8usize]>>
 129:     0x7f2bfadcba88 - rustc_query_system[219200ddf699f4fc]::query::plumbing::try_execute_query::<rustc_query_impl[ffef2ea0cc82d0dd]::DynamicConfig<rustc_query_system[219200ddf699f4fc]::query::caches::DefIdCache<rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[ffef2ea0cc82d0dd]::plumbing::QueryCtxt, true>
 130:     0x7f2bfadc9599 - rustc_query_impl[ffef2ea0cc82d0dd]::query_impl::type_of::get_query_incr::__rust_end_short_backtrace
 131:     0x7f2bfb027648 - rustc_middle[d8712503438341b1]::query::plumbing::query_get_at::<rustc_query_system[219200ddf699f4fc]::query::caches::DefIdCache<rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 8usize]>>>
 132:     0x7f2bfb6c3cd2 - <rustc_middle[d8712503438341b1]::ty::util::OpaqueTypeExpander>::expand_opaque_ty
 133:     0x7f2bfb6c2c38 - <rustc_middle[d8712503438341b1]::ty::util::OpaqueTypeExpander as rustc_type_ir[4aa984e93c9e232c]::fold::TypeFolder<rustc_middle[d8712503438341b1]::ty::context::TyCtxt>>::fold_ty
 134:     0x7f2bfbcdd592 - <&rustc_middle[d8712503438341b1]::ty::list::RawList<(), rustc_middle[d8712503438341b1]::ty::Ty> as rustc_type_ir[4aa984e93c9e232c]::fold::TypeFoldable<rustc_middle[d8712503438341b1]::ty::context::TyCtxt>>::try_fold_with::<rustc_middle[d8712503438341b1]::ty::util::OpaqueTypeExpander>
 135:     0x7f2bfb6c2c8c - <rustc_middle[d8712503438341b1]::ty::util::OpaqueTypeExpander as rustc_type_ir[4aa984e93c9e232c]::fold::TypeFolder<rustc_middle[d8712503438341b1]::ty::context::TyCtxt>>::fold_ty
 136:     0x7f2bfb6c32b0 - <&rustc_middle[d8712503438341b1]::ty::list::RawList<(), rustc_middle[d8712503438341b1]::ty::generic_args::GenericArg> as rustc_type_ir[4aa984e93c9e232c]::fold::TypeFoldable<rustc_middle[d8712503438341b1]::ty::context::TyCtxt>>::try_fold_with::<rustc_middle[d8712503438341b1]::ty::util::OpaqueTypeExpander>
 137:     0x7f2bfb6c2c63 - <rustc_middle[d8712503438341b1]::ty::util::OpaqueTypeExpander as rustc_type_ir[4aa984e93c9e232c]::fold::TypeFolder<rustc_middle[d8712503438341b1]::ty::context::TyCtxt>>::fold_ty
 138:     0x7f2bfb6c31d5 - <&rustc_middle[d8712503438341b1]::ty::list::RawList<(), rustc_middle[d8712503438341b1]::ty::generic_args::GenericArg> as rustc_type_ir[4aa984e93c9e232c]::fold::TypeFoldable<rustc_middle[d8712503438341b1]::ty::context::TyCtxt>>::try_fold_with::<rustc_middle[d8712503438341b1]::ty::util::OpaqueTypeExpander>
 139:     0x7f2bfb6c2cb4 - <rustc_middle[d8712503438341b1]::ty::util::OpaqueTypeExpander as rustc_type_ir[4aa984e93c9e232c]::fold::TypeFolder<rustc_middle[d8712503438341b1]::ty::context::TyCtxt>>::fold_ty
 140:     0x7f2bfb6c3d15 - <rustc_middle[d8712503438341b1]::ty::util::OpaqueTypeExpander>::expand_opaque_ty
 141:     0x7f2bfb6c3b84 - <rustc_middle[d8712503438341b1]::ty::context::TyCtxt>::try_expand_impl_trait_type
 142:     0x7f2bfbbf436b - rustc_hir_analysis[6a1b22ded269dcc8]::check::check::check_item_type
 143:     0x7f2bfb2849ed - rustc_hir_analysis[6a1b22ded269dcc8]::check::wfcheck::check_well_formed
 144:     0x7f2bfb2834a3 - rustc_query_impl[ffef2ea0cc82d0dd]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[ffef2ea0cc82d0dd]::query_impl::check_well_formed::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 1usize]>>
 145:     0x7f2bfb177639 - rustc_query_system[219200ddf699f4fc]::query::plumbing::try_execute_query::<rustc_query_impl[ffef2ea0cc82d0dd]::DynamicConfig<rustc_query_system[219200ddf699f4fc]::query::caches::VecCache<rustc_hir[b876769eaf7937d5]::hir_id::OwnerId, rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[ffef2ea0cc82d0dd]::plumbing::QueryCtxt, true>
 146:     0x7f2bfb17713f - rustc_query_impl[ffef2ea0cc82d0dd]::query_impl::check_well_formed::get_query_incr::__rust_end_short_backtrace
 147:     0x7f2bfb280913 - rustc_hir_analysis[6a1b22ded269dcc8]::check::wfcheck::check_mod_type_wf
 148:     0x7f2bfb28075b - rustc_query_impl[ffef2ea0cc82d0dd]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[ffef2ea0cc82d0dd]::query_impl::check_mod_type_wf::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 1usize]>>
 149:     0x7f2bfba39f42 - rustc_query_system[219200ddf699f4fc]::query::plumbing::try_execute_query::<rustc_query_impl[ffef2ea0cc82d0dd]::DynamicConfig<rustc_query_system[219200ddf699f4fc]::query::caches::DefaultCache<rustc_span[53b55791d064607f]::def_id::LocalModDefId, rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[ffef2ea0cc82d0dd]::plumbing::QueryCtxt, true>
 150:     0x7f2bfba3ac08 - rustc_query_impl[ffef2ea0cc82d0dd]::query_impl::check_mod_type_wf::get_query_incr::__rust_end_short_backtrace
 151:     0x7f2bfae3393b - rustc_hir_analysis[6a1b22ded269dcc8]::check_crate
 152:     0x7f2bfb4c5b7a - rustc_interface[336e9a5fb47021d9]::passes::analysis
 153:     0x7f2bfb4c56d5 - rustc_query_impl[ffef2ea0cc82d0dd]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[ffef2ea0cc82d0dd]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 1usize]>>
 154:     0x7f2bfba16b4a - rustc_query_system[219200ddf699f4fc]::query::plumbing::try_execute_query::<rustc_query_impl[ffef2ea0cc82d0dd]::DynamicConfig<rustc_query_system[219200ddf699f4fc]::query::caches::SingleCache<rustc_middle[d8712503438341b1]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[ffef2ea0cc82d0dd]::plumbing::QueryCtxt, true>
 155:     0x7f2bfba1675c - rustc_query_impl[ffef2ea0cc82d0dd]::query_impl::analysis::get_query_incr::__rust_end_short_backtrace
 156:     0x7f2bfb8bdfd9 - rustc_interface[336e9a5fb47021d9]::interface::run_compiler::<core[2a3c68b720306447]::result::Result<(), rustc_span[53b55791d064607f]::ErrorGuaranteed>, rustc_driver_impl[427e5c398467f86b]::run_compiler::{closure#0}>::{closure#1}
 157:     0x7f2bfb7ab327 - std[531770c5e2e8d301]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[336e9a5fb47021d9]::util::run_in_thread_with_globals<rustc_interface[336e9a5fb47021d9]::util::run_in_thread_pool_with_globals<rustc_interface[336e9a5fb47021d9]::interface::run_compiler<core[2a3c68b720306447]::result::Result<(), rustc_span[53b55791d064607f]::ErrorGuaranteed>, rustc_driver_impl[427e5c398467f86b]::run_compiler::{closure#0}>::{closure#1}, core[2a3c68b720306447]::result::Result<(), rustc_span[53b55791d064607f]::ErrorGuaranteed>>::{closure#0}, core[2a3c68b720306447]::result::Result<(), rustc_span[53b55791d064607f]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[2a3c68b720306447]::result::Result<(), rustc_span[53b55791d064607f]::ErrorGuaranteed>>
 158:     0x7f2bfb7ab0ea - <<std[531770c5e2e8d301]::thread::Builder>::spawn_unchecked_<rustc_interface[336e9a5fb47021d9]::util::run_in_thread_with_globals<rustc_interface[336e9a5fb47021d9]::util::run_in_thread_pool_with_globals<rustc_interface[336e9a5fb47021d9]::interface::run_compiler<core[2a3c68b720306447]::result::Result<(), rustc_span[53b55791d064607f]::ErrorGuaranteed>, rustc_driver_impl[427e5c398467f86b]::run_compiler::{closure#0}>::{closure#1}, core[2a3c68b720306447]::result::Result<(), rustc_span[53b55791d064607f]::ErrorGuaranteed>>::{closure#0}, core[2a3c68b720306447]::result::Result<(), rustc_span[53b55791d064607f]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[2a3c68b720306447]::result::Result<(), rustc_span[53b55791d064607f]::ErrorGuaranteed>>::{closure#2} as core[2a3c68b720306447]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
 159:     0x7f2bfce20a1b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hc8d25b9018534ef3
                               at /rustc/1cec373f65eb76e8e4b4d1847213cf3ec6c292b6/library/alloc/src/boxed.rs:2018:9
 160:     0x7f2bfce20a1b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h9f7c65c9881af958
                               at /rustc/1cec373f65eb76e8e4b4d1847213cf3ec6c292b6/library/alloc/src/boxed.rs:2018:9
 161:     0x7f2bfce20a1b - std::sys::pal::unix::thread::Thread::new::thread_start::ha61a9957d3d99efc
                               at /rustc/1cec373f65eb76e8e4b4d1847213cf3ec6c292b6/library/std/src/sys/pal/unix/thread.rs:108:17
 162:     0x7f2bf666bac3 - start_thread
                               at ./nptl/pthread_create.c:442:8
 163:     0x7f2bf66fd850 - __GI___clone3
                               at ./misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:81
 164:                0x0 - <unknown>


rustc version: 1.79.0-nightly (1cec373f6 2024-04-16)
platform: x86_64-unknown-linux-gnu

query stack during panic:
#0 [typeck] type-checking `__App`
#1 [type_of_opaque] computing type of opaque `__App::{opaque#0}`
#2 [type_of] computing type of `__App::{opaque#0}`
#3 [check_well_formed] checking that `App::{opaque#0}` is well-formed
#4 [check_mod_type_wf] checking that types are well-formed in top-level module
#5 [analysis] running analysis passes on this crate
end of query stack