ICE from rustc_query_impl/on_disk_cache.rs

[jhelovuo]

Code

Sorry, not doable this time.

Meta

rustc --version --verbose:

rustc 1.55.0 (c8dfcfe04 2021-09-06)
binary: rustc
commit-hash: c8dfcfe046a7680554bf4eb612bad840e7631c4b
commit-date: 2021-09-06
host: x86_64-apple-darwin
release: 1.55.0
LLVM version: 12.0.1

Error output

thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', compiler/rustc_query_impl/src/on_disk_cache.rs:890:14
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

error: internal compiler error: unexpected panic

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

Backtrace

thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', compiler/rustc_query_impl/src/on_disk_cache.rs:890:14
stack backtrace:
   0: _rust_begin_unwind
   1: core::panicking::panic_fmt
   2: core::panicking::panic
   3: rustc_middle::ty::generics::_DERIVE_rustc_serialize_Decodable_D_FOR_GenericParamDef::<impl rustc_serialize::serialize::Decodable<__D> for rustc_middle::ty::generics::GenericParamDef>::decode
   4: rustc_serialize::serialize::Decoder::read_seq
   5: rustc_middle::ty::generics::_DERIVE_rustc_serialize_Decodable_D_FOR_Generics::<impl rustc_serialize::serialize::Decodable<__D> for rustc_middle::ty::generics::Generics>::decode
   6: rustc_query_impl::on_disk_cache::OnDiskCache::try_load_query_result
   7: rustc_query_impl::plumbing::<impl rustc_query_system::query::config::QueryDescription<rustc_query_impl::plumbing::QueryCtxt> for rustc_query_impl::queries::generics_of>::try_load_from_disk
   8: rustc_query_system::query::plumbing::load_from_disk_and_cache_in_memory
   9: rustc_data_structures::stack::ensure_sufficient_stack
  10: rustc_query_system::query::plumbing::get_query_impl
  11: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::generics_of
  12: rustc_middle::ty::subst::<impl rustc_middle::ty::list::List<rustc_middle::ty::subst::GenericArg>>::for_item
  13: rustc_infer::infer::InferCtxt::fresh_substs_for_item
  14: rustc_trait_selection::traits::select::SelectionContext::match_impl
  15: rustc_infer::infer::InferCtxt::probe
  16: rustc_middle::ty::trait_def::<impl rustc_middle::ty::context::TyCtxt>::for_each_relevant_impl
  17: rustc_trait_selection::traits::select::candidate_assembly::<impl rustc_trait_selection::traits::select::SelectionContext>::assemble_candidates_from_impls
  18: rustc_trait_selection::traits::select::candidate_assembly::<impl rustc_trait_selection::traits::select::SelectionContext>::assemble_candidates
  19: rustc_trait_selection::traits::select::candidate_assembly::<impl rustc_trait_selection::traits::select::SelectionContext>::candidate_from_obligation_no_cache
  20: rustc_query_system::dep_graph::graph::DepGraph<K>::with_anon_task
  21: rustc_trait_selection::traits::select::candidate_assembly::<impl rustc_trait_selection::traits::select::SelectionContext>::candidate_from_obligation
  22: rustc_trait_selection::traits::select::SelectionContext::select
  23: rustc_trait_selection::traits::fulfill::FulfillProcessor::process_trait_obligation
  24: rustc_trait_selection::traits::fulfill::FulfillProcessor::progress_changed_obligations
  25: rustc_data_structures::obligation_forest::ObligationForest<O>::process_obligations
  26: <rustc_trait_selection::traits::fulfill::FulfillmentContext as rustc_infer::traits::engine::TraitEngine>::select_where_possible
  27: rustc_typeck::check::op::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::lookup_op_method
  28: rustc_typeck::check::op::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_overloaded_binop
  29: rustc_typeck::check::op::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_binop
  30: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_with_expectation
  31: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_coercable_to_type
  32: rustc_typeck::check::op::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_binop
  33: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_with_expectation
  34: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_with_expectation
  35: rustc_typeck::check::_match::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_match
  36: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_kind
  37: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_with_expectation
  38: rustc_typeck::check::fn_ctxt::checks::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_block_with_expected
  39: rustc_typeck::check::fn_ctxt::checks::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_block_no_value
  40: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_kind
  41: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_with_expectation
  42: rustc_typeck::check::fn_ctxt::checks::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_stmt
  43: rustc_typeck::check::fn_ctxt::checks::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_block_with_expected
  44: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_with_expectation
  45: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_return_expr
  46: rustc_typeck::check::check::check_fn
  47: rustc_infer::infer::InferCtxtBuilder::enter
  48: rustc_typeck::check::typeck
  49: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  50: rustc_data_structures::stack::ensure_sufficient_stack
  51: rustc_query_system::query::plumbing::force_query_with_job
  52: rustc_query_system::query::plumbing::get_query_impl
  53: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::typeck
  54: rustc_middle::ty::<impl rustc_middle::ty::context::TyCtxt>::par_body_owners
  55: rustc_typeck::check::typeck_item_bodies
  56: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  57: rustc_data_structures::stack::ensure_sufficient_stack
  58: rustc_query_system::query::plumbing::force_query_with_job
  59: rustc_query_system::query::plumbing::get_query_impl
  60: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::typeck_item_bodies
  61: rustc_session::utils::<impl rustc_session::session::Session>::time
  62: rustc_typeck::check_crate
  63: rustc_interface::passes::analysis
  64: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  65: rustc_data_structures::stack::ensure_sufficient_stack
  66: rustc_query_system::query::plumbing::force_query_with_job
  67: rustc_query_system::query::plumbing::get_query_impl
  68: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis
  69: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
  70: rustc_span::with_source_map
  71: rustc_interface::interface::create_compiler_and_run
  72: scoped_tls::ScopedKey<T>::set
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error: internal compiler error: unexpected panic

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

[csmoe]

Seems duplicate of #92258
Fixed by #92533 Feel free to reopen.