stacktrace.txt

thread 'rustc' panicked at 'called `Result::unwrap()` on an `Err` value: "read_option: expected 0 for None or 1 for Some"', src/librustc_metadata/rmeta/decoder.rs:225:9
stack backtrace:
   0:     0x7fc9d0c10313 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h66f6e8480585dc51
   1:     0x7fc9d0c45fec - core::fmt::write::heedf53e364631398
   2:     0x7fc9d0c0b885 - std::io::Write::write_fmt::h7812f34d3fb40dd0
   3:     0x7fc9d0be77b5 - std::panicking::default_hook::{{closure}}::hc53bde5034054f22
   4:     0x7fc9d0be74c0 - std::panicking::default_hook::h3384b1cc95191773
   5:     0x7fc9d1300ae9 - rustc_driver::report_ice::h51ee98aae05b572a
   6:     0x7fc9d0be7fad - std::panicking::rust_panic_with_hook::h9d9bfc48fc8a3bea
   7:     0x7fc9d0be7ac0 - rust_begin_unwind
   8:     0x7fc9d0c4cbd1 - core::panicking::panic_fmt::h4c0aa82b5f57a464
   9:     0x7fc9d0c4cc63 - core::result::unwrap_failed::hcfeccde0040080fa
  10:     0x7fc9d4b88b62 - rustc_metadata::rmeta::decoder::<impl rustc_metadata::rmeta::Lazy<T>>::decode::h8c3a250ee7f95966
  11:     0x7fc9d4c7ed1b - rustc_metadata::rmeta::decoder::CrateMetadata::get_optimized_mir::h6e3c4a0994c598e6
  12:     0x7fc9d4ba5676 - rustc_metadata::rmeta::decoder::cstore_impl::provide_extern::optimized_mir::he5c49c200c63c41d
  13:     0x7fc9d44378a7 - rustc::ty::query::__query_compute::optimized_mir::h280fdc784caaf280
  14:     0x7fc9d4628c47 - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query::h5be0b35f15f7e241
  15:     0x7fc9d46d0ab3 - rustc_mir::interpret::eval_context::InterpCx<M>::load_mir::h486fb67131460d27
  16:     0x7fc9d481216f - rustc_mir::const_eval::eval_queries::const_eval_raw_provider::h9390b5957acba009
  17:     0x7fc9d4437b93 - rustc::ty::query::__query_compute::const_eval_raw::h666c59e963f2621d
  18:     0x7fc9d4690766 - rustc::ty::context::tls::with_context::{{closure}}::h32ae2bb87f271836
  19:     0x7fc9d45fe53a - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query::h238306ca6e08236f
  20:     0x7fc9d48112e3 - rustc_mir::const_eval::eval_queries::const_eval_validated_provider::hd755f9980a187d1d
  21:     0x7fc9d4438cc3 - rustc::ty::query::__query_compute::const_eval_validated::he3be8eab21a83cb4
  22:     0x7fc9d468fb26 - rustc::ty::context::tls::with_context::{{closure}}::h2f5ce18aae8d4f69
  23:     0x7fc9d463d3c8 - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query::h7cd8e0ce28ac5d8d
  24:     0x7fc9d481107e - rustc_mir::const_eval::eval_queries::const_eval_validated_provider::hd755f9980a187d1d
  25:     0x7fc9d544ea4a - rustc::ty::query::__query_compute::const_eval_validated::h40f194e80e389b0e
  26:     0x7fc9d565aa8a - rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::const_eval_validated>::compute::h31e39e301035da79
  27:     0x7fc9d5112855 - rustc::dep_graph::graph::DepGraph::with_task_impl::h289ebf9fb661850a
  28:     0x7fc9d5569219 - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query::he31d06b3d6d8ec2a
  29:     0x7fc9d54cea81 - rustc::mir::interpret::queries::<impl rustc::ty::context::TyCtxt>::const_eval_instance::heb28227f44cde2b7
  30:     0x7fc9d54ce65b - rustc::mir::interpret::queries::<impl rustc::ty::context::TyCtxt>::const_eval_resolve::hc69e77a14ff3a7eb
  31:     0x7fc9d520a2ce - <rustc::traits::project::AssocTypeNormalizer as rustc::ty::fold::TypeFolder>::fold_const::he15ca5d6a2669c04
  32:     0x7fc9d518b203 - rustc::ty::structural_impls::<impl rustc::ty::fold::TypeFoldable for &rustc::ty::TyS>::super_fold_with::h2266a437d526c250
  33:     0x7fc9d5209d54 - <rustc::traits::project::AssocTypeNormalizer as rustc::ty::fold::TypeFolder>::fold_ty::hfd0eaf509d46fe63
  34:     0x7fc9d517c2d6 - rustc::ty::fold::TypeFoldable::fold_with::h8a28511a704200d4
  35:     0x7fc9d520991d - rustc::traits::project::normalize_with_depth::h8a2b283dde895f58
  36:     0x7fc9d52d76ae - rustc::traits::select::SelectionContext::match_impl::h4d16e2061a2e55a3
  37:     0x7fc9d56ae866 - rustc::infer::InferCtxt::probe::h208d18c62c1a5f62
  38:     0x7fc9d563b960 - rustc::ty::trait_def::<impl rustc::ty::context::TyCtxt>::for_each_relevant_impl::h83874cde2bdfe5a1
  39:     0x7fc9d52d1900 - rustc::traits::select::SelectionContext::assemble_candidates_from_impls::h48cd08405164e072
  40:     0x7fc9d52cf957 - rustc::traits::select::SelectionContext::assemble_candidates::hee3346e64daee1da
  41:     0x7fc9d52cd916 - rustc::traits::select::SelectionContext::candidate_from_obligation_no_cache::hc99d8dfa8cb2adfd
  42:     0x7fc9d514985c - rustc::dep_graph::graph::DepGraph::with_anon_task::h7b0e72cf308c77a0
  43:     0x7fc9d52cc97e - rustc::traits::select::SelectionContext::candidate_from_obligation::h0aa807d4ae58f234
  44:     0x7fc9d52cb7b0 - rustc::traits::select::SelectionContext::evaluate_stack::hb843f59ed886b864
  45:     0x7fc9d514940e - rustc::dep_graph::graph::DepGraph::with_anon_task::h77bc4658575b2283
  46:     0x7fc9d52cab9f - rustc::traits::select::SelectionContext::evaluate_predicate_recursively::h355ae5e2d88286ae
  47:     0x7fc9d52c93bd - rustc::traits::select::SelectionContext::evaluate_predicates_recursively::h6c7e3f588989e75e
  48:     0x7fc9d56af965 - rustc::infer::InferCtxt::probe::hf8ec4aa650573c6b
  49:     0x7fc9d50ae149 - <core::iter::adapters::ResultShunt<I,E> as core::iter::traits::iterator::Iterator>::next::h9e3627664912b378
  50:     0x7fc9d5377951 - <alloc::vec::Vec<T> as alloc::vec::SpecExtend<T,I>>::from_iter::h12eb4fe8e0a75e83
  51:     0x7fc9d52cdaf3 - rustc::traits::select::SelectionContext::candidate_from_obligation_no_cache::hc99d8dfa8cb2adfd
  52:     0x7fc9d514985c - rustc::dep_graph::graph::DepGraph::with_anon_task::h7b0e72cf308c77a0
  53:     0x7fc9d52cc97e - rustc::traits::select::SelectionContext::candidate_from_obligation::h0aa807d4ae58f234
  54:     0x7fc9d52cb7b0 - rustc::traits::select::SelectionContext::evaluate_stack::hb843f59ed886b864
  55:     0x7fc9d514940e - rustc::dep_graph::graph::DepGraph::with_anon_task::h77bc4658575b2283
  56:     0x7fc9d52cab9f - rustc::traits::select::SelectionContext::evaluate_predicate_recursively::h355ae5e2d88286ae
  57:     0x7fc9d52c93bd - rustc::traits::select::SelectionContext::evaluate_predicates_recursively::h6c7e3f588989e75e
  58:     0x7fc9d56af965 - rustc::infer::InferCtxt::probe::hf8ec4aa650573c6b
  59:     0x7fc9d50ae149 - <core::iter::adapters::ResultShunt<I,E> as core::iter::traits::iterator::Iterator>::next::h9e3627664912b378
  60:     0x7fc9d5377951 - <alloc::vec::Vec<T> as alloc::vec::SpecExtend<T,I>>::from_iter::h12eb4fe8e0a75e83
  61:     0x7fc9d52cdaf3 - rustc::traits::select::SelectionContext::candidate_from_obligation_no_cache::hc99d8dfa8cb2adfd
  62:     0x7fc9d514985c - rustc::dep_graph::graph::DepGraph::with_anon_task::h7b0e72cf308c77a0
  63:     0x7fc9d52cc97e - rustc::traits::select::SelectionContext::candidate_from_obligation::h0aa807d4ae58f234
  64:     0x7fc9d52cb7b0 - rustc::traits::select::SelectionContext::evaluate_stack::hb843f59ed886b864
  65:     0x7fc9d514940e - rustc::dep_graph::graph::DepGraph::with_anon_task::h77bc4658575b2283
  66:     0x7fc9d52cab9f - rustc::traits::select::SelectionContext::evaluate_predicate_recursively::h355ae5e2d88286ae
  67:     0x7fc9d56ae69f - rustc::infer::InferCtxt::probe::h00459895e9eff904
  68:     0x7fc9d52c9130 - rustc::traits::select::SelectionContext::evaluate_root_obligation::h1781b29e9a42cf28
  69:     0x7fc9d3c02151 - rustc::ty::context::GlobalCtxt::enter_local::h8ff49d867bae4d1c
  70:     0x7fc9d3c2c4bf - rustc_traits::evaluate_obligation::evaluate_obligation::h8bb6c0a5f2439a8c
  71:     0x7fc9d5452f4f - rustc::ty::query::__query_compute::evaluate_obligation::hc4a05f9993c4661f
  72:     0x7fc9d565b5df - rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::evaluate_obligation>::compute::h2f8c3be5a428967a
  73:     0x7fc9d514302a - rustc::dep_graph::graph::DepGraph::with_task_impl::hd87926f243e822e9
  74:     0x7fc9d54e263e - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query::h12368e098130ccf7
  75:     0x7fc9d56d0230 - rustc::traits::query::evaluate_obligation::<impl rustc::infer::InferCtxt>::evaluate_obligation::hb3c0b4f1d67981a0
  76:     0x7fc9d56d02ed - rustc::traits::query::evaluate_obligation::<impl rustc::infer::InferCtxt>::evaluate_obligation_no_overflow::hcadd76144fa5565e
  77:     0x7fc9d56d0066 - rustc::traits::query::evaluate_obligation::<impl rustc::infer::InferCtxt>::predicate_may_hold::h97f06911fb254580
  78:     0x7fc9d3ef0942 - rustc_typeck::check::method::<impl rustc_typeck::check::FnCtxt>::lookup_method_in_trait::h1f18bef3baa66424
  79:     0x7fc9d3ef6001 - rustc_typeck::check::op::<impl rustc_typeck::check::FnCtxt>::lookup_op_method::h09ad7f0ac80e1a05
  80:     0x7fc9d3ef2198 - rustc_typeck::check::op::<impl rustc_typeck::check::FnCtxt>::check_overloaded_binop::ha53479498fbfbac0
  81:     0x7fc9d3ef1ed1 - rustc_typeck::check::op::<impl rustc_typeck::check::FnCtxt>::check_binop::h2969b1df860c70f4
  82:     0x7fc9d3edc332 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::ha08d506881a2e826
  83:     0x7fc9d3edb3b6 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h6cb603028ed0cce0
  84:     0x7fc9d3edc408 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::ha08d506881a2e826
  85:     0x7fc9d3edb3b6 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h6cb603028ed0cce0
  86:     0x7fc9d3edb955 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::ha08d506881a2e826
  87:     0x7fc9d3edb3b6 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h6cb603028ed0cce0
  88:     0x7fc9d3eca678 - rustc_typeck::check::_match::<impl rustc_typeck::check::FnCtxt>::check_match::h2bbba41374a77397
  89:     0x7fc9d3edc3cf - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::ha08d506881a2e826
  90:     0x7fc9d3edb3b6 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h6cb603028ed0cce0
  91:     0x7fc9d3f183d5 - rustc_typeck::check::FnCtxt::check_block_with_expected::h54a6df5f77c113b4
  92:     0x7fc9d3edbe72 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::ha08d506881a2e826
  93:     0x7fc9d3edb3b6 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h6cb603028ed0cce0
  94:     0x7fc9d3ecb225 - rustc_typeck::check::_match::<impl rustc_typeck::check::FnCtxt>::check_match::h2bbba41374a77397
  95:     0x7fc9d3edc3cf - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::ha08d506881a2e826
  96:     0x7fc9d3edb3b6 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h6cb603028ed0cce0
  97:     0x7fc9d3f183d5 - rustc_typeck::check::FnCtxt::check_block_with_expected::h54a6df5f77c113b4
  98:     0x7fc9d3edbe72 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::ha08d506881a2e826
  99:     0x7fc9d3edb3b6 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h6cb603028ed0cce0
 100:     0x7fc9d3f17d39 - rustc_typeck::check::FnCtxt::check_stmt::haddd1e0098d64d11
 101:     0x7fc9d3f1839b - rustc_typeck::check::FnCtxt::check_block_with_expected::h54a6df5f77c113b4
 102:     0x7fc9d3edbe72 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_kind::ha08d506881a2e826
 103:     0x7fc9d3edb3b6 - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_expr_with_expectation_and_needs::h6cb603028ed0cce0
 104:     0x7fc9d3ee5abb - rustc_typeck::check::expr::<impl rustc_typeck::check::FnCtxt>::check_return_expr::h2f9ca86d272b5bc7
 105:     0x7fc9d3f03954 - rustc_typeck::check::check_fn::h8264454e6cf0e510
 106:     0x7fc9d40ba635 - rustc::ty::context::tls::with_context::{{closure}}::hf269ba6e654ba842
 107:     0x7fc9d3f0218e - rustc_typeck::check::typeck_tables_of::hb783120714c375f1
 108:     0x7fc9d410993a - rustc::ty::query::__query_compute::typeck_tables_of::h4085e407971136d8
 109:     0x7fc9d402b8eb - rustc::ty::query::<impl rustc::ty::query::config::QueryAccessors for rustc::ty::query::queries::typeck_tables_of>::compute::h7fe290e1a190d0b7
 110:     0x7fc9d3fbce6b - rustc::dep_graph::graph::DepGraph::with_task_impl::h3bf8a120565bd5b9
 111:     0x7fc9d4064b72 - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query::h7121900f84c655d7
 112:     0x7fc9d402724f - rustc::ty::<impl rustc::ty::context::TyCtxt>::par_body_owners::h6f6dbd37665677d9
 113:     0x7fc9d3f01a7d - rustc_typeck::check::typeck_item_bodies::h193ef9738cdcd31a
 114:     0x7fc9d4109d45 - rustc::ty::query::__query_compute::typeck_item_bodies::h27b9c5929b0991c5
 115:     0x7fc9d3fcb5c9 - rustc::dep_graph::graph::DepGraph::with_task_impl::hd9b4e43e2b7888c5
 116:     0x7fc9d406fbe9 - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query::h7e1dd12301529545
 117:     0x7fc9d40ec9ed - rustc_typeck::check_crate::h8dd50578803febd3
 118:     0x7fc9d1512a4b - rustc_interface::passes::analysis::h1760453b137b0348
 119:     0x7fc9d12a0901 - rustc::ty::query::__query_compute::analysis::h46e21ab0b78d6ea1
 120:     0x7fc9d12f0c1b - rustc::dep_graph::graph::DepGraph::with_task_impl::h63ac6a158e56acd6
 121:     0x7fc9d1303cf4 - rustc::ty::query::plumbing::<impl rustc::ty::context::TyCtxt>::get_query::h53d716a70b514093
 122:     0x7fc9d12eee85 - rustc::ty::context::tls::enter_global::hc7d81f2de7c4b10e
 123:     0x7fc9d12aca0c - rustc_interface::interface::run_compiler_in_existing_thread_pool::h5275131d9b7d7d44
 124:     0x7fc9d129c80d - scoped_tls::ScopedKey<T>::set::hf0ec96ef2daf9576
 125:     0x7fc9d1299e44 - syntax::with_globals::hffe6ce90bfefa228
 126:     0x7fc9d129de60 - std::sys_common::backtrace::__rust_begin_short_backtrace::hd2bdf835a0831f54
 127:     0x7fc9d0c19087 - __rust_maybe_catch_panic
 128:     0x7fc9d12afae9 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h0add63df27e599c7
 129:     0x7fc9d0be144f - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h74346d90f0a2dd8c
 130:     0x7fc9d0c0c680 - std::sys_common::thread::start_thread::hba18ee19d9464e32
 131:     0x7fc9d0bf1dc6 - std::sys::unix::thread::Thread::new::thread_start::h5ebae22d794f6aaa
 132:     0x7fc9d0b4b4cf - start_thread
 133:     0x7fc9d09182d3 - clone
 134:                0x0 - <unknown>

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: rustc 1.42.0-dev running on x86_64-unknown-linux-gnu

note: compiler flags: -Z miri-disable-isolation

query stack during panic:
#0 [optimized_mir] processing `<[T; _] as std::array::LengthAtMost32>::{{constant}}#0`
#1 [const_eval_raw] const-evaluating `<[T; _] as std::array::LengthAtMost32>::{{constant}}#0`
#2 [const_eval_validated] const-evaluating + checking `<[T; _] as std::array::LengthAtMost32>::{{constant}}#0`
#3 [const_eval_validated] const-evaluating + checking `<[T; _] as std::array::LengthAtMost32>::{{constant}}#0`
#4 [evaluate_obligation] evaluating trait selection obligation `&[u8; 14]: std::cmp::PartialEq<^1_1>`
#5 [typeck_tables_of] processing `main`
#6 [typeck_item_bodies] type-checking all item bodies
#7 [analysis] running analysis passes on this crate
end of query stack