Regression from 1.61 to 1.62

[0xdeafbeef]

Code

cd $(mktemp -d) &&  git clone https://github.com/broxus/ton-indexer.git && cd ton-indexer && git checkout c17e57d00f3e881ad32c867094edb738b5e47b5a && cargo check

Meta

rustc --version --verbose:

rustc 1.62.0 (a8314ef7d 2022-06-27)
binary: rustc
commit-hash: a8314ef7d0ec7b75c336af2c9857bfaf43002bfc
commit-date: 2022-06-27
host: x86_64-unknown-linux-gnu
release: 1.62.0
LLVM version: 14.0.5

Error output

error: internal compiler error: compiler/rustc_borrowck/src/universal_regions.rs:810:36: cannot convert `ReEarlyBound(1, '_)` to a region vid

Backtrace

error: internal compiler error: compiler/rustc_borrowck/src/universal_regions.rs:810:36: cannot convert `ReEarlyBound(1, '_)` to a region vid

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/compiler/rustc_errors/src/lib.rs:1335:9
stack backtrace:
   0:     0x7fbb88e9dfed - std::backtrace_rs::backtrace::libunwind::trace::hb729d9642bb971eb
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7fbb88e9dfed - std::backtrace_rs::backtrace::trace_unsynchronized::h373bb774579df5c7
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fbb88e9dfed - std::sys_common::backtrace::_print_fmt::hfbd4e92d240c89bb
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/std/src/sys_common/backtrace.rs:66:5
   3:     0x7fbb88e9dfed - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8f618991fbf64972
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/std/src/sys_common/backtrace.rs:45:22
   4:     0x7fbb88ef9c7c - core::fmt::write::hc69b5b640d88cce8
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/core/src/fmt/mod.rs:1196:17
   5:     0x7fbb88e8f6c1 - std::io::Write::write_fmt::h3403cef06a24a303
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/std/src/io/mod.rs:1654:15
   6:     0x7fbb88ea0d05 - std::sys_common::backtrace::_print::h368f27cdedea0e52
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/std/src/sys_common/backtrace.rs:48:5
   7:     0x7fbb88ea0d05 - std::sys_common::backtrace::print::ha105c9cf5a64cd17
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/std/src/sys_common/backtrace.rs:35:9
   8:     0x7fbb88ea0d05 - std::panicking::default_hook::{{closure}}::h48ed2c3707d5e20e
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/std/src/panicking.rs:295:22
   9:     0x7fbb88ea0979 - std::panicking::default_hook::h8744fc5cea5e3110
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/std/src/panicking.rs:314:9
  10:     0x7fbb896e9961 - rustc_driver[cc15f272104f8c81]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7fbb78609683 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hf270ccd282d441e1
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/alloc/src/boxed.rs:1886:9
  12:     0x7fbb786371cd - proc_macro::bridge::client::<impl proc_macro::bridge::Bridge>::enter::{{closure}}::{{closure}}::h47be12298b431f57
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/proc_macro/src/bridge/client.rs:335:21
  13:     0x7fbb88ea14d6 - std::panicking::rust_panic_with_hook::hc82286af2030e925
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/std/src/panicking.rs:702:17
  14:     0x7fbb8a763e61 - std[62a6aef941a414a5]::panicking::begin_panic::<rustc_errors[7cc8b2502942d635]::ExplicitBug>::{closure#0}
  15:     0x7fbb8a75e3b6 - std[62a6aef941a414a5]::sys_common::backtrace::__rust_end_short_backtrace::<std[62a6aef941a414a5]::panicking::begin_panic<rustc_errors[7cc8b2502942d635]::ExplicitBug>::{closure#0}, !>
  16:     0x7fbb8a6f3dc6 - std[62a6aef941a414a5]::panicking::begin_panic::<rustc_errors[7cc8b2502942d635]::ExplicitBug>
  17:     0x7fbb8a6ab536 - std[62a6aef941a414a5]::panic::panic_any::<rustc_errors[7cc8b2502942d635]::ExplicitBug>
  18:     0x7fbb8a6a4c75 - <rustc_errors[7cc8b2502942d635]::HandlerInner>::bug::<&alloc[678093063b977939]::string::String>
  19:     0x7fbb8a6a4680 - <rustc_errors[7cc8b2502942d635]::Handler>::bug::<&alloc[678093063b977939]::string::String>
  20:     0x7fbb8a76c7ad - rustc_middle[2b9dbf3985a9058b]::ty::context::tls::with_opt::<rustc_middle[2b9dbf3985a9058b]::util::bug::opt_span_bug_fmt<rustc_span[aeddd698d19619f]::span_encoding::Span>::{closure#0}, ()>
  21:     0x7fbb8a76cb26 - rustc_middle[2b9dbf3985a9058b]::util::bug::opt_span_bug_fmt::<rustc_span[aeddd698d19619f]::span_encoding::Span>
  22:     0x7fbb8a76caa3 - rustc_middle[2b9dbf3985a9058b]::util::bug::bug_fmt
  23:     0x7fbb8af30451 - <rustc_borrowck[c373a10a95822b25]::type_check::constraint_conversion::ConstraintConversion>::convert_all
  24:     0x7fbb8af58e8b - <rustc_borrowck[c373a10a95822b25]::type_check::TypeChecker>::fully_perform_op::<(), rustc_middle[2b9dbf3985a9058b]::ty::ParamEnvAnd<rustc_middle[2b9dbf3985a9058b]::traits::query::type_op::AscribeUserType>>
  25:     0x7fbb8af41e6c - rustc_borrowck[c373a10a95822b25]::type_check::type_check
  26:     0x7fbb8af1deec - rustc_borrowck[c373a10a95822b25]::nll::compute_regions
  27:     0x7fbb8af8babe - rustc_borrowck[c373a10a95822b25]::do_mir_borrowck
  28:     0x7fbb8af84749 - rustc_borrowck[c373a10a95822b25]::mir_borrowck
  29:     0x7fbb8af814b0 - <rustc_borrowck[c373a10a95822b25]::provide::{closure#0} as core[6724bec812d80be0]::ops::function::FnOnce<(rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_span[aeddd698d19619f]::def_id::LocalDefId)>>::call_once
  30:     0x7fbb8bc16cc0 - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_span[aeddd698d19619f]::def_id::LocalDefId, &rustc_middle[2b9dbf3985a9058b]::mir::query::BorrowCheckResult>
  31:     0x7fbb8b1b3761 - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::try_execute_query::<rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt, rustc_query_system[a16ac1cefdea5f76]::query::caches::DefaultCache<rustc_span[aeddd698d19619f]::def_id::LocalDefId, &rustc_middle[2b9dbf3985a9058b]::mir::query::BorrowCheckResult>>
  32:     0x7fbb8b17e3ea - <rustc_query_impl[37d320545ae1f097]::Queries as rustc_middle[2b9dbf3985a9058b]::ty::query::QueryEngine>::mir_borrowck
  33:     0x7fbb8b61e831 - <rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt>::mir_borrowck_opt_const_arg
  34:     0x7fbb8ab250f7 - rustc_mir_transform[34692f6d13108f5a]::mir_drops_elaborated_and_const_checked
  35:     0x7fbb8bc0b23c - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_middle[2b9dbf3985a9058b]::ty::WithOptConstParam<rustc_span[aeddd698d19619f]::def_id::LocalDefId>, &rustc_data_structures[e6d5a572b4e9612f]::steal::Steal<rustc_middle[2b9dbf3985a9058b]::mir::Body>>
  36:     0x7fbb8b1a01a6 - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::try_execute_query::<rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt, rustc_query_system[a16ac1cefdea5f76]::query::caches::DefaultCache<rustc_middle[2b9dbf3985a9058b]::ty::WithOptConstParam<rustc_span[aeddd698d19619f]::def_id::LocalDefId>, &rustc_data_structures[e6d5a572b4e9612f]::steal::Steal<rustc_middle[2b9dbf3985a9058b]::mir::Body>>>
  37:     0x7fbb8b17cf28 - <rustc_query_impl[37d320545ae1f097]::Queries as rustc_middle[2b9dbf3985a9058b]::ty::query::QueryEngine>::mir_drops_elaborated_and_const_checked
  38:     0x7fbb8b91d286 - rustc_mir_transform[34692f6d13108f5a]::inner_mir_for_ctfe
  39:     0x7fbb8b91cafc - rustc_mir_transform[34692f6d13108f5a]::mir_for_ctfe
  40:     0x7fbb8bc22e87 - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_span[aeddd698d19619f]::def_id::DefId, &rustc_middle[2b9dbf3985a9058b]::mir::Body>
  41:     0x7fbb8b1c33ec - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::try_execute_query::<rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt, rustc_query_system[a16ac1cefdea5f76]::query::caches::DefaultCache<rustc_span[aeddd698d19619f]::def_id::DefId, &rustc_middle[2b9dbf3985a9058b]::mir::Body>>
  42:     0x7fbb8bcff2bc - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::get_query::<rustc_query_impl[37d320545ae1f097]::queries::mir_for_ctfe, rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt>
  43:     0x7fbb8bb8120f - <rustc_const_eval[654e2017a2411b4b]::interpret::eval_context::InterpCx<rustc_const_eval[654e2017a2411b4b]::const_eval::machine::CompileTimeInterpreter>>::load_mir
  44:     0x7fbb8b0cbcab - rustc_const_eval[654e2017a2411b4b]::const_eval::eval_queries::eval_to_allocation_raw_provider
  45:     0x7fbb8bc09c49 - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_middle[2b9dbf3985a9058b]::ty::ParamEnvAnd<rustc_middle[2b9dbf3985a9058b]::mir::interpret::GlobalId>, core[6724bec812d80be0]::result::Result<rustc_middle[2b9dbf3985a9058b]::mir::interpret::value::ConstAlloc, rustc_middle[2b9dbf3985a9058b]::mir::interpret::error::ErrorHandled>>
  46:     0x7fbb8b19cab7 - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::try_execute_query::<rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt, rustc_query_system[a16ac1cefdea5f76]::query::caches::DefaultCache<rustc_middle[2b9dbf3985a9058b]::ty::ParamEnvAnd<rustc_middle[2b9dbf3985a9058b]::mir::interpret::GlobalId>, core[6724bec812d80be0]::result::Result<rustc_middle[2b9dbf3985a9058b]::mir::interpret::value::ConstAlloc, rustc_middle[2b9dbf3985a9058b]::mir::interpret::error::ErrorHandled>>>
  47:     0x7fbb8b17e533 - <rustc_query_impl[37d320545ae1f097]::Queries as rustc_middle[2b9dbf3985a9058b]::ty::query::QueryEngine>::eval_to_allocation_raw
  48:     0x7fbb8b0caad4 - rustc_const_eval[654e2017a2411b4b]::const_eval::eval_queries::eval_to_const_value_raw_provider
  49:     0x7fbb8bc0a1f9 - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_middle[2b9dbf3985a9058b]::ty::ParamEnvAnd<rustc_middle[2b9dbf3985a9058b]::mir::interpret::GlobalId>, core[6724bec812d80be0]::result::Result<rustc_middle[2b9dbf3985a9058b]::mir::interpret::value::ConstValue, rustc_middle[2b9dbf3985a9058b]::mir::interpret::error::ErrorHandled>>
  50:     0x7fbb8b19dc4e - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::try_execute_query::<rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt, rustc_query_system[a16ac1cefdea5f76]::query::caches::DefaultCache<rustc_middle[2b9dbf3985a9058b]::ty::ParamEnvAnd<rustc_middle[2b9dbf3985a9058b]::mir::interpret::GlobalId>, core[6724bec812d80be0]::result::Result<rustc_middle[2b9dbf3985a9058b]::mir::interpret::value::ConstValue, rustc_middle[2b9dbf3985a9058b]::mir::interpret::error::ErrorHandled>>>
  51:     0x7fbb8b17e6e0 - <rustc_query_impl[37d320545ae1f097]::Queries as rustc_middle[2b9dbf3985a9058b]::ty::query::QueryEngine>::eval_to_const_value_raw
  52:     0x7fbb8b0ca842 - rustc_const_eval[654e2017a2411b4b]::const_eval::eval_queries::eval_to_const_value_raw_provider
  53:     0x7fbb8bc0a1f9 - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_middle[2b9dbf3985a9058b]::ty::ParamEnvAnd<rustc_middle[2b9dbf3985a9058b]::mir::interpret::GlobalId>, core[6724bec812d80be0]::result::Result<rustc_middle[2b9dbf3985a9058b]::mir::interpret::value::ConstValue, rustc_middle[2b9dbf3985a9058b]::mir::interpret::error::ErrorHandled>>
  54:     0x7fbb8b19dc4e - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::try_execute_query::<rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt, rustc_query_system[a16ac1cefdea5f76]::query::caches::DefaultCache<rustc_middle[2b9dbf3985a9058b]::ty::ParamEnvAnd<rustc_middle[2b9dbf3985a9058b]::mir::interpret::GlobalId>, core[6724bec812d80be0]::result::Result<rustc_middle[2b9dbf3985a9058b]::mir::interpret::value::ConstValue, rustc_middle[2b9dbf3985a9058b]::mir::interpret::error::ErrorHandled>>>
  55:     0x7fbb8b17e6e0 - <rustc_query_impl[37d320545ae1f097]::Queries as rustc_middle[2b9dbf3985a9058b]::ty::query::QueryEngine>::eval_to_const_value_raw
  56:     0x7fbb8b60d475 - <rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt>::const_eval_global_id
  57:     0x7fbb8bf87179 - <rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt>::const_eval_resolve
  58:     0x7fbb8a63e71a - rustc_middle[2b9dbf3985a9058b]::ty::relate::super_relate_consts::<rustc_infer[55a689d00ae6ec12]::infer::equate::Equate>
  59:     0x7fbb8a61b7c3 - <rustc_infer[55a689d00ae6ec12]::infer::InferCtxt>::super_combine_consts::<rustc_infer[55a689d00ae6ec12]::infer::equate::Equate>
  60:     0x7fbb8b545107 - rustc_middle[2b9dbf3985a9058b]::ty::relate::super_relate_tys::<rustc_infer[55a689d00ae6ec12]::infer::equate::Equate>
  61:     0x7fbb8b527127 - <rustc_infer[55a689d00ae6ec12]::infer::InferCtxt>::super_combine_tys::<rustc_infer[55a689d00ae6ec12]::infer::equate::Equate>
  62:     0x7fbb8b544e92 - rustc_middle[2b9dbf3985a9058b]::ty::relate::super_relate_tys::<rustc_infer[55a689d00ae6ec12]::infer::equate::Equate>
  63:     0x7fbb8b59fbbc - <rustc_infer[55a689d00ae6ec12]::infer::equate::Equate as rustc_middle[2b9dbf3985a9058b]::ty::relate::TypeRelation>::tys
  64:     0x7fbb8b49709e - rustc_trait_selection[5d73681df2441a7c]::traits::project::project_and_unify_type
  65:     0x7fbb8b4c594f - <rustc_trait_selection[5d73681df2441a7c]::traits::fulfill::FulfillProcessor>::process_changed_obligations
  66:     0x7fbb8b4eb787 - <rustc_data_structures[e6d5a572b4e9612f]::obligation_forest::ObligationForest<rustc_trait_selection[5d73681df2441a7c]::traits::fulfill::PendingPredicateObligation>>::process_obligations::<rustc_trait_selection[5d73681df2441a7c]::traits::fulfill::FulfillProcessor, rustc_data_structures[e6d5a572b4e9612f]::obligation_forest::Outcome<rustc_trait_selection[5d73681df2441a7c]::traits::fulfill::PendingPredicateObligation, rustc_infer[55a689d00ae6ec12]::traits::FulfillmentErrorCode>>
  67:     0x7fbb8b4c2df1 - <rustc_trait_selection[5d73681df2441a7c]::traits::fulfill::FulfillmentContext as rustc_infer[55a689d00ae6ec12]::traits::engine::TraitEngine>::select_where_possible
  68:     0x7fbb8ab94129 - <rustc_typeck[9a0dbd9e1b6c9fb9]::check::fn_ctxt::FnCtxt>::type_inference_fallback
  69:     0x7fbb8ac3730d - <rustc_infer[55a689d00ae6ec12]::infer::InferCtxtBuilder>::enter::<&rustc_middle[2b9dbf3985a9058b]::ty::context::TypeckResults, <rustc_typeck[9a0dbd9e1b6c9fb9]::check::inherited::InheritedBuilder>::enter<rustc_typeck[9a0dbd9e1b6c9fb9]::check::typeck_with_fallback<rustc_typeck[9a0dbd9e1b6c9fb9]::check::typeck::{closure#0}>::{closure#1}, &rustc_middle[2b9dbf3985a9058b]::ty::context::TypeckResults>::{closure#0}>
  70:     0x7fbb8abf6fe0 - rustc_typeck[9a0dbd9e1b6c9fb9]::check::typeck
  71:     0x7fbb8bc162c0 - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_span[aeddd698d19619f]::def_id::LocalDefId, &rustc_middle[2b9dbf3985a9058b]::ty::context::TypeckResults>
  72:     0x7fbb8b1b2786 - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::try_execute_query::<rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt, rustc_query_system[a16ac1cefdea5f76]::query::caches::DefaultCache<rustc_span[aeddd698d19619f]::def_id::LocalDefId, &rustc_middle[2b9dbf3985a9058b]::ty::context::TypeckResults>>
  73:     0x7fbb8b17e178 - <rustc_query_impl[37d320545ae1f097]::Queries as rustc_middle[2b9dbf3985a9058b]::ty::query::QueryEngine>::typeck
  74:     0x7fbb8b61e2a2 - <rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt>::typeck_opt_const_arg
  75:     0x7fbb8ae3ce7a - rustc_mir_build[47e1d63702a692cd]::build::mir_built
  76:     0x7fbb8bc0b23c - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_middle[2b9dbf3985a9058b]::ty::WithOptConstParam<rustc_span[aeddd698d19619f]::def_id::LocalDefId>, &rustc_data_structures[e6d5a572b4e9612f]::steal::Steal<rustc_middle[2b9dbf3985a9058b]::mir::Body>>
  77:     0x7fbb8b1a01a6 - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::try_execute_query::<rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt, rustc_query_system[a16ac1cefdea5f76]::query::caches::DefaultCache<rustc_middle[2b9dbf3985a9058b]::ty::WithOptConstParam<rustc_span[aeddd698d19619f]::def_id::LocalDefId>, &rustc_data_structures[e6d5a572b4e9612f]::steal::Steal<rustc_middle[2b9dbf3985a9058b]::mir::Body>>>
  78:     0x7fbb8b17cb25 - <rustc_query_impl[37d320545ae1f097]::Queries as rustc_middle[2b9dbf3985a9058b]::ty::query::QueryEngine>::mir_built
  79:     0x7fbb8ab349ce - rustc_mir_transform[34692f6d13108f5a]::check_unsafety::unsafety_check_result
  80:     0x7fbb8ab2c1b0 - <rustc_mir_transform[34692f6d13108f5a]::check_unsafety::provide::{closure#0} as core[6724bec812d80be0]::ops::function::FnOnce<(rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_span[aeddd698d19619f]::def_id::LocalDefId)>>::call_once
  81:     0x7fbb8bc171c0 - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_span[aeddd698d19619f]::def_id::LocalDefId, &rustc_middle[2b9dbf3985a9058b]::mir::query::UnsafetyCheckResult>
  82:     0x7fbb8b1b47a6 - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::try_execute_query::<rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt, rustc_query_system[a16ac1cefdea5f76]::query::caches::DefaultCache<rustc_span[aeddd698d19619f]::def_id::LocalDefId, &rustc_middle[2b9dbf3985a9058b]::mir::query::UnsafetyCheckResult>>
  83:     0x7fbb8b17dd7e - <rustc_query_impl[37d320545ae1f097]::Queries as rustc_middle[2b9dbf3985a9058b]::ty::query::QueryEngine>::unsafety_check_result
  84:     0x7fbb8ab22e4f - rustc_mir_transform[34692f6d13108f5a]::mir_const
  85:     0x7fbb8bc0b23c - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_middle[2b9dbf3985a9058b]::ty::WithOptConstParam<rustc_span[aeddd698d19619f]::def_id::LocalDefId>, &rustc_data_structures[e6d5a572b4e9612f]::steal::Steal<rustc_middle[2b9dbf3985a9058b]::mir::Body>>
  86:     0x7fbb8b1a01a6 - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::try_execute_query::<rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt, rustc_query_system[a16ac1cefdea5f76]::query::caches::DefaultCache<rustc_middle[2b9dbf3985a9058b]::ty::WithOptConstParam<rustc_span[aeddd698d19619f]::def_id::LocalDefId>, &rustc_data_structures[e6d5a572b4e9612f]::steal::Steal<rustc_middle[2b9dbf3985a9058b]::mir::Body>>>
  87:     0x7fbb8b17cc5c - <rustc_query_impl[37d320545ae1f097]::Queries as rustc_middle[2b9dbf3985a9058b]::ty::query::QueryEngine>::mir_const
  88:     0x7fbb8ab24985 - rustc_mir_transform[34692f6d13108f5a]::mir_promoted
  89:     0x7fbb8bc0b75b - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_middle[2b9dbf3985a9058b]::ty::WithOptConstParam<rustc_span[aeddd698d19619f]::def_id::LocalDefId>, (&rustc_data_structures[e6d5a572b4e9612f]::steal::Steal<rustc_middle[2b9dbf3985a9058b]::mir::Body>, &rustc_data_structures[e6d5a572b4e9612f]::steal::Steal<rustc_index[342f26aacc9ae82e]::vec::IndexVec<rustc_middle[2b9dbf3985a9058b]::mir::Promoted, rustc_middle[2b9dbf3985a9058b]::mir::Body>>)>
  90:     0x7fbb8b1a16ce - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::try_execute_query::<rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt, rustc_query_system[a16ac1cefdea5f76]::query::caches::DefaultCache<rustc_middle[2b9dbf3985a9058b]::ty::WithOptConstParam<rustc_span[aeddd698d19619f]::def_id::LocalDefId>, (&rustc_data_structures[e6d5a572b4e9612f]::steal::Steal<rustc_middle[2b9dbf3985a9058b]::mir::Body>, &rustc_data_structures[e6d5a572b4e9612f]::steal::Steal<rustc_index[342f26aacc9ae82e]::vec::IndexVec<rustc_middle[2b9dbf3985a9058b]::mir::Promoted, rustc_middle[2b9dbf3985a9058b]::mir::Body>>)>>
  91:     0x7fbb8b17d074 - <rustc_query_impl[37d320545ae1f097]::Queries as rustc_middle[2b9dbf3985a9058b]::ty::query::QueryEngine>::mir_promoted
  92:     0x7fbb8af843f9 - rustc_borrowck[c373a10a95822b25]::mir_borrowck
  93:     0x7fbb8af814b0 - <rustc_borrowck[c373a10a95822b25]::provide::{closure#0} as core[6724bec812d80be0]::ops::function::FnOnce<(rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_span[aeddd698d19619f]::def_id::LocalDefId)>>::call_once
  94:     0x7fbb8bc16cc0 - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_span[aeddd698d19619f]::def_id::LocalDefId, &rustc_middle[2b9dbf3985a9058b]::mir::query::BorrowCheckResult>
  95:     0x7fbb8b1b3761 - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::try_execute_query::<rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt, rustc_query_system[a16ac1cefdea5f76]::query::caches::DefaultCache<rustc_span[aeddd698d19619f]::def_id::LocalDefId, &rustc_middle[2b9dbf3985a9058b]::mir::query::BorrowCheckResult>>
  96:     0x7fbb8b17e3ea - <rustc_query_impl[37d320545ae1f097]::Queries as rustc_middle[2b9dbf3985a9058b]::ty::query::QueryEngine>::mir_borrowck
  97:     0x7fbb8acce506 - rustc_typeck[9a0dbd9e1b6c9fb9]::collect::type_of::type_of
  98:     0x7fbb8b14b8b7 - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_span[aeddd698d19619f]::def_id::DefId, rustc_middle[2b9dbf3985a9058b]::ty::Ty>
  99:     0x7fbb8b1f9f0a - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::get_query::<rustc_query_impl[37d320545ae1f097]::queries::type_of, rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt>
 100:     0x7fbb8acbf442 - rustc_typeck[9a0dbd9e1b6c9fb9]::check::check::check_item_type
 101:     0x7fbb8acc433b - rustc_typeck[9a0dbd9e1b6c9fb9]::check::check::check_mod_item_types
 102:     0x7fbb8bc17baf - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, rustc_span[aeddd698d19619f]::def_id::LocalDefId, ()>
 103:     0x7fbb8b1b578e - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::try_execute_query::<rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt, rustc_query_system[a16ac1cefdea5f76]::query::caches::DefaultCache<rustc_span[aeddd698d19619f]::def_id::LocalDefId, ()>>
 104:     0x7fbb8bd06f83 - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::get_query::<rustc_query_impl[37d320545ae1f097]::queries::check_mod_item_types, rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt>
 105:     0x7fbb8ba1c95d - <rustc_middle[2b9dbf3985a9058b]::hir::map::Map>::for_each_module::<rustc_typeck[9a0dbd9e1b6c9fb9]::check_crate::{closure#6}::{closure#0}>
 106:     0x7fbb8b9e8138 - <rustc_session[834eb9541c60901f]::session::Session>::time::<(), rustc_typeck[9a0dbd9e1b6c9fb9]::check_crate::{closure#6}>
 107:     0x7fbb8b9db748 - rustc_typeck[9a0dbd9e1b6c9fb9]::check_crate
 108:     0x7fbb8b7844d7 - rustc_interface[a10bc87377f6ea4]::passes::analysis
 109:     0x7fbb8bc2f3b5 - <rustc_query_system[a16ac1cefdea5f76]::dep_graph::graph::DepGraph<rustc_middle[2b9dbf3985a9058b]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[2b9dbf3985a9058b]::ty::context::TyCtxt, (), core[6724bec812d80be0]::result::Result<(), rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>>
 110:     0x7fbb8bcd4ca1 - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::try_execute_query::<rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt, rustc_query_system[a16ac1cefdea5f76]::query::caches::DefaultCache<(), core[6724bec812d80be0]::result::Result<(), rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>>>
 111:     0x7fbb8bd15fbe - rustc_query_system[a16ac1cefdea5f76]::query::plumbing::get_query::<rustc_query_impl[37d320545ae1f097]::queries::analysis, rustc_query_impl[37d320545ae1f097]::plumbing::QueryCtxt>
 112:     0x7fbb8b764f97 - <rustc_interface[a10bc87377f6ea4]::passes::QueryContext>::enter::<rustc_driver[cc15f272104f8c81]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[6724bec812d80be0]::result::Result<(), rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>>
 113:     0x7fbb8b74ffe8 - <rustc_interface[a10bc87377f6ea4]::interface::Compiler>::enter::<rustc_driver[cc15f272104f8c81]::run_compiler::{closure#1}::{closure#2}, core[6724bec812d80be0]::result::Result<core[6724bec812d80be0]::option::Option<rustc_interface[a10bc87377f6ea4]::queries::Linker>, rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>>
 114:     0x7fbb8b7786ef - rustc_span[aeddd698d19619f]::with_source_map::<core[6724bec812d80be0]::result::Result<(), rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>, rustc_interface[a10bc87377f6ea4]::interface::create_compiler_and_run<core[6724bec812d80be0]::result::Result<(), rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>, rustc_driver[cc15f272104f8c81]::run_compiler::{closure#1}>::{closure#1}>
 115:     0x7fbb8b764024 - rustc_interface[a10bc87377f6ea4]::interface::create_compiler_and_run::<core[6724bec812d80be0]::result::Result<(), rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>, rustc_driver[cc15f272104f8c81]::run_compiler::{closure#1}>
 116:     0x7fbb8b74e4f2 - <scoped_tls[7f4edc8f5e37700f]::ScopedKey<rustc_span[aeddd698d19619f]::SessionGlobals>>::set::<rustc_interface[a10bc87377f6ea4]::interface::run_compiler<core[6724bec812d80be0]::result::Result<(), rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>, rustc_driver[cc15f272104f8c81]::run_compiler::{closure#1}>::{closure#0}, core[6724bec812d80be0]::result::Result<(), rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>>
 117:     0x7fbb8b76561f - std[62a6aef941a414a5]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[a10bc87377f6ea4]::util::run_in_thread_pool_with_globals<rustc_interface[a10bc87377f6ea4]::interface::run_compiler<core[6724bec812d80be0]::result::Result<(), rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>, rustc_driver[cc15f272104f8c81]::run_compiler::{closure#1}>::{closure#0}, core[6724bec812d80be0]::result::Result<(), rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>>::{closure#0}, core[6724bec812d80be0]::result::Result<(), rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>>
 118:     0x7fbb8b765759 - <<std[62a6aef941a414a5]::thread::Builder>::spawn_unchecked_<rustc_interface[a10bc87377f6ea4]::util::run_in_thread_pool_with_globals<rustc_interface[a10bc87377f6ea4]::interface::run_compiler<core[6724bec812d80be0]::result::Result<(), rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>, rustc_driver[cc15f272104f8c81]::run_compiler::{closure#1}>::{closure#0}, core[6724bec812d80be0]::result::Result<(), rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>>::{closure#0}, core[6724bec812d80be0]::result::Result<(), rustc_errors[7cc8b2502942d635]::ErrorGuaranteed>>::{closure#1} as core[6724bec812d80be0]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
 119:     0x7fbb88eab3f3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hcbca3baf872b7fe4
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/alloc/src/boxed.rs:1872:9
 120:     0x7fbb88eab3f3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h18790338ce1743e2
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/alloc/src/boxed.rs:1872:9
 121:     0x7fbb88eab3f3 - std::sys::unix::thread::Thread::new::thread_start::hb1067183bad48893
                               at /rustc/a8314ef7d0ec7b75c336af2c9857bfaf43002bfc/library/std/src/sys/unix/thread.rs:108:17
 122:     0x7fbb88c8054d - <unknown>
 123:     0x7fbb88d05874 - clone
 124:                0x0 - <unknown>

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

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.62.0 (a8314ef7d 2022-06-27) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type lib -C embed-bitcode=no -C debuginfo=2 -C incremental

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [mir_borrowck] borrow-checking `db::shard_state_storage::entries_buffer::<impl at src/db/shard_state_storage/entries_buffer.rs:3:1: 29:2>::iter_child_buffers::{opaque#0}::{constant#0}`
#1 [mir_drops_elaborated_and_const_checked] elaborating drops for `db::shard_state_storage::entries_buffer::<impl at src/db/shard_state_storage/entries_buffer.rs:3:1: 29:2>::iter_child_buffers::{opaque#0}::{constant#0}`
#2 [mir_for_ctfe] caching mir of `db::shard_state_storage::entries_buffer::<impl at src/db/shard_state_storage/entries_buffer.rs:3:1: 29:2>::iter_child_buffers::{opaque#0}::{constant#0}` for CTFE
#3 [eval_to_allocation_raw] const-evaluating + checking `db::shard_state_storage::entries_buffer::<impl at src/db/shard_state_storage/entries_buffer.rs:3:1: 29:2>::iter_child_buffers::{opaque#0}::{constant#0}`
#4 [eval_to_const_value_raw] simplifying constant for the type system `db::shard_state_storage::entries_buffer::<impl at src/db/shard_state_storage/entries_buffer.rs:3:1: 29:2>::iter_child_buffers::{opaque#0}::{constant#0}`
#5 [eval_to_const_value_raw] simplifying constant for the type system `db::shard_state_storage::entries_buffer::<impl at src/db/shard_state_storage/entries_buffer.rs:3:1: 29:2>::iter_child_buffers::{opaque#0}::{constant#0}`
#6 [typeck] type-checking `db::shard_state_storage::entries_buffer::<impl at src/db/shard_state_storage/entries_buffer.rs:3:1: 29:2>::iter_child_buffers`
#7 [mir_built] building MIR for `db::shard_state_storage::entries_buffer::<impl at src/db/shard_state_storage/entries_buffer.rs:3:1: 29:2>::iter_child_buffers`
#8 [unsafety_check_result] unsafety-checking `db::shard_state_storage::entries_buffer::<impl at src/db/shard_state_storage/entries_buffer.rs:3:1: 29:2>::iter_child_buffers`
#9 [mir_const] processing MIR for `db::shard_state_storage::entries_buffer::<impl at src/db/shard_state_storage/entries_buffer.rs:3:1: 29:2>::iter_child_buffers`
#10 [mir_promoted] processing `db::shard_state_storage::entries_buffer::<impl at src/db/shard_state_storage/entries_buffer.rs:3:1: 29:2>::iter_child_buffers`
#11 [mir_borrowck] borrow-checking `db::shard_state_storage::entries_buffer::<impl at src/db/shard_state_storage/entries_buffer.rs:3:1: 29:2>::iter_child_buffers`
#12 [type_of] computing type of `db::shard_state_storage::entries_buffer::<impl at src/db/shard_state_storage/entries_buffer.rs:3:1: 29:2>::iter_child_buffers::{opaque#0}`
#13 [check_mod_item_types] checking item types in module `db::shard_state_storage::entries_buffer`
#14 [analysis] running analysis passes on this crate
end of query stack

[0xdeafbeef]

Mre:

pub struct EntriesBuffer(Box<[[u8; HashesEntry::LEN]; 5]>);

impl EntriesBuffer {
    pub fn new() -> Self {
        Self(Box::new([[0; HashesEntry::LEN]; 5]))
    }

    pub fn current_entry_buffer(&mut self) -> &mut [u8; HashesEntry::LEN] {
        &mut self.0[0]
    }

    pub fn iter_child_buffers(&mut self) -> impl Iterator<Item = &mut [u8; HashesEntry::LEN]> {
        self.0.iter_mut().skip(1)
    }

    pub fn split_children<'a, 'b>(
        &'a mut self,
        references: &'b [u32],
    ) -> (HashesEntryWriter<'a>, EntriesBufferChildren<'b>)
    where
        'a: 'b,
    {
        let [first, tail @ ..] = &mut *self.0;
        (
            HashesEntryWriter(first),
            EntriesBufferChildren(references, tail),
        )
    }
}

pub struct EntriesBufferChildren<'a>(&'a [u32], &'a [[u8; HashesEntry::LEN]]);

impl EntriesBufferChildren<'_> {
    pub fn iter(&self) -> impl Iterator<Item = (&u32, HashesEntry)> {
        self.0
            .iter()
            .zip(self.1)
            .map(|(index, item)| (index, HashesEntry(item)))
    }
}

pub struct HashesEntryWriter<'a>(&'a mut [u8]);

impl HashesEntryWriter<'_> {
    pub fn as_reader(&self) -> HashesEntry {
        HashesEntry(self.0)
    }

    pub fn clear(&mut self) {
        for byte in &mut *self.0 {
            *byte = 0;
        }
    }

    pub fn set_tree_bits_count(&mut self, count: u64) {
        self.0[4..12].copy_from_slice(&count.to_le_bytes());
    }

    pub fn set_tree_cell_count(&mut self, count: u64) {
        self.0[12..20].copy_from_slice(&count.to_le_bytes());
    }

    pub fn get_tree_counters(&mut self) -> &[u8] {
        &self.0[4..20]
    }

    pub fn set_hash(&mut self, i: u8, hash: &[u8]) {
        self.get_hash_slice(i).copy_from_slice(hash);
    }

    pub fn get_hash_slice(&mut self, i: u8) -> &mut [u8] {
        let offset = HashesEntry::HASHES_OFFSET + 32 * i as usize;
        &mut self.0[offset..offset + 32]
    }

    pub fn set_depth(&mut self, i: u8, depth: u16) {
        self.get_depth_slice(i)
            .copy_from_slice(&depth.to_le_bytes());
    }

    pub fn get_depth_slice(&mut self, i: u8) -> &mut [u8] {
        let offset = HashesEntry::DEPTHS_OFFSET + 2 * i as usize;
        &mut self.0[offset..offset + 2]
    }
}

pub struct HashesEntry<'a>(&'a [u8]);

impl<'a> HashesEntry<'a> {
    // 4 bytes - info (1 byte level mask, 1 byte cell type, 2 bytes padding)
    // 8 bytes - tree bits count
    // 4 bytes - cell count
    // 32 * 4 bytes - hashes
    // 2 * 4 bytes - depths
    pub const LEN: usize = 4 + 8 + 8 + 32 * 4 + 2 * 4;
    pub const HASHES_OFFSET: usize = 4 + 8 + 8;
    pub const DEPTHS_OFFSET: usize = 4 + 8 + 8 + 32 * 4;

    pub fn tree_bits_count(&self) -> u64 {
        u64::from_le_bytes(self.0[4..12].try_into().unwrap())
    }

    pub fn tree_cell_count(&self) -> u64 {
        u64::from_le_bytes(self.0[12..20].try_into().unwrap())
    }

    pub fn hash(&self, n: u8) -> &[u8] {
        let offset = Self::HASHES_OFFSET + 32 * self.level_mask().calc_hash_index(n as usize);
        &self.0[offset..offset + 32]
    }

    pub fn depth(&self, n: u8) -> u16 {
        let offset = Self::DEPTHS_OFFSET + 2 * self.level_mask().calc_hash_index(n as usize);
        u16::from_le_bytes([self.0[offset], self.0[offset + 1]])
    }

    pub fn pruned_branch_hash<'b>(&self, n: u8, data: &'b [u8]) -> &'b [u8]
    where
        'a: 'b,
    {
        let level_mask = self.level_mask();
        let index = level_mask.calc_hash_index(n as usize);
        let level = level_mask.level() as usize;

        if index == level {
            let offset = Self::HASHES_OFFSET;
            &self.0[offset..offset + 32]
        } else {
            let offset = 1 + 1 + index * 32;
            &data[offset..offset + 32]
        }
    }

    pub fn pruned_branch_depth(&self, n: u8, data: &[u8]) -> u16 {
        let level_mask = self.level_mask();
        let index = level_mask.calc_hash_index(n as usize);
        let level = level_mask.level() as usize;

        if index == level {
            let offset = Self::DEPTHS_OFFSET;
            u16::from_le_bytes([self.0[offset], self.0[offset + 1]])
        } else {
            let offset = 1 + 1 + level * 32 + index * 2;
            u16::from_be_bytes([data[offset], data[offset + 1]])
        }
    }
}

searched nightlies: from nightly-2022-04-15 to nightly-2022-05-02
regressed nightly: nightly-2022-05-01
searched commit range: a707f40...7c4b476
regressed commit: 76d4862

bisected with cargo-bisect-rustc v0.6.3

Host triple: x86_64-unknown-linux-gnu
Reproduce with:

cargo bisect-rustc --test-dir=. --start=2022-04-15 --end=2022-05-02

[apiraino]

WG-prioritization assigning priority (Zulip discussion). Tagging PR #95776

@rustbot label -I-prioritize +P-medium

[apiraino]

Before the regression, the sample code reported a compile error:

error summary

~/tmp/issue-98932$ cargo +nightly-2022-04-15-x86_64-unknown-linux-gnu check
    Checking issue-98932 v0.1.0 (~/tmp/issue-98932)
error[E0599]: no method named `level_mask` found for reference `&HashesEntry<'a>` in the current scope
   --> src/main.rs:108:54
    |
108 |         let offset = Self::HASHES_OFFSET + 32 * self.level_mask().calc_hash_index(n as usize);
    |                                                      ^^^^^^^^^^ method not found in `&HashesEntry<'a>`

error[E0599]: no method named `level_mask` found for reference `&HashesEntry<'a>` in the current scope
   --> src/main.rs:113:53
    |
113 |         let offset = Self::DEPTHS_OFFSET + 2 * self.level_mask().calc_hash_index(n as usize);
    |                                                     ^^^^^^^^^^ method not found in `&HashesEntry<'a>`

error[E0599]: no method named `level_mask` found for reference `&HashesEntry<'a>` in the current scope
   --> src/main.rs:121:31
    |
121 |         let level_mask = self.level_mask();
    |                               ^^^^^^^^^^ method not found in `&HashesEntry<'a>`

error[E0599]: no method named `level_mask` found for reference `&HashesEntry<'a>` in the current scope
   --> src/main.rs:135:31
    |
135 |         let level_mask = self.level_mask();
    |                               ^^^^^^^^^^ method not found in `&HashesEntry<'a>`

For more information about this error, try `rustc --explain E0599`.
error: could not compile `issue-98932` due to 4 previous errors

[lqd]

so the ICE is from #95776, cc PR author @cjgillot

[Rexagon]

Slightly smaller example which successfully compiles on 1.61 and failed with ICE on 1.62:

pub struct EntriesBuffer(Box<[[u8; HashesEntry::LEN]; 5]>);

impl EntriesBuffer {
    pub fn iter_child_buffers(&mut self) -> impl Iterator<Item = &mut [u8; HashesEntry::LEN]> {
        self.0.iter_mut()
    }

//     Compiles successfully if `'static` lifetime is specified:
//
//     pub fn iter_child_buffers(&mut self) -> impl Iterator<Item = &mut [u8; HashesEntry::<'static>::LEN]> {
//        self.0.iter_mut()
//    }
}

pub struct HashesEntry<'a>(&'a [u8]);

impl HashesEntry<'_> {
    pub const LEN: usize = 1;
}