Compile crash after performing module rename via rust analyzer, but only when compiling for test with nightly, workaround by running `cargo clean`

[barafael]

This compile crash occurred after doing some refactorings with rust analyzer (via VSCode). The last refactoring I did before was renaming a module by renaming a directory in VSCode. The crash does not occur with cargo build or cargo +stable test. But I also did not run these commands for a while before that, so they were probably doing a clean build.

After running cargo clean, everything is fine again. Sorry for not having code I can share.

Meta

rustc --version --verbose:

rustc 1.58.0-nightly (ff0e14829 2021-10-31)
binary: rustc
commit-hash: ff0e14829e1806ca0d4226595f7fdf3e8658758f
commit-date: 2021-10-31
host: x86_64-unknown-linux-gnu
release: 1.58.0-nightly
LLVM version: 13.0.0

Error output

thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/compiler/rustc_hir/src/definitions.rs:452:14
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.

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 1.58.0-nightly (ff0e14829 2021-10-31) running on x86_64-unknown-linux-gnu

note: compiler flags: -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 [evaluate_obligation] evaluating trait selection obligation `impl core::future::future::Future: core::marker::Send`
#1 [typeck] type-checking `mod_a::mod_b::<impl at src/mod_a/thing.rs:37:1: 96:2>::start`
end of query stack
error: could not compile `thing`

Backtrace

> RUST_BACKTRACE=full cargo test
   Compiling thing v0.0.1 (/home/user/project)
thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/compiler/rustc_hir/src/definitions.rs:452:14
stack backtrace:
   0:     0x7f8b4b0047bc - std::backtrace_rs::backtrace::libunwind::trace::hc6c3491277866fea
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f8b4b0047bc - std::backtrace_rs::backtrace::trace_unsynchronized::h4524f073368a5b13
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f8b4b0047bc - std::sys_common::backtrace::_print_fmt::h0d0cace6159902af
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/std/src/sys_common/backtrace.rs:67:5
   3:     0x7f8b4b0047bc - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h3e6af6f05919a7fc
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/std/src/sys_common/backtrace.rs:46:22
   4:     0x7f8b4b0619fc - core::fmt::write::h72801a82c94e6ff1
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/core/src/fmt/mod.rs:1149:17
   5:     0x7f8b4aff4e95 - std::io::Write::write_fmt::ha4f5d34aaccbac84
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/std/src/io/mod.rs:1697:15
   6:     0x7f8b4b007a10 - std::sys_common::backtrace::_print::heed69f5ce9a8e189
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/std/src/sys_common/backtrace.rs:49:5
   7:     0x7f8b4b007a10 - std::sys_common::backtrace::print::h5f3918bd80c09252
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/std/src/sys_common/backtrace.rs:36:9
   8:     0x7f8b4b007a10 - std::panicking::default_hook::{{closure}}::h5af30648530eb3d0
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/std/src/panicking.rs:211:50
   9:     0x7f8b4b0075bb - std::panicking::default_hook::he88d5fb1ba1b4c19
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/std/src/panicking.rs:228:9
  10:     0x7f8b4b79baa1 - rustc_driver[3d33b2d383bdce56]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7f8b2de54263 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h4812d27d2f51a9ce
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/alloc/src/boxed.rs:1705:9
  12:     0x7f8b2de5d18d - proc_macro::bridge::client::<impl proc_macro::bridge::Bridge>::enter::{{closure}}::{{closure}}::h96debdda741189d0
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/proc_macro/src/bridge/client.rs:320:21
  13:     0x7f8b4b008229 - std::panicking::rust_panic_with_hook::h01febc308b2b313b
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/std/src/panicking.rs:610:17
  14:     0x7f8b4b007cb2 - std::panicking::begin_panic_handler::{{closure}}::h24a6d13f5560b71f
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/std/src/panicking.rs:500:13
  15:     0x7f8b4b004c64 - std::sys_common::backtrace::__rust_end_short_backtrace::h3e2917f0da9fbc5c
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/std/src/sys_common/backtrace.rs:139:18
  16:     0x7f8b4b007c49 - rust_begin_unwind
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/std/src/panicking.rs:498:5
  17:     0x7f8b4afcd151 - core::panicking::panic_fmt::h7b8580d81fcbbacd
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/core/src/panicking.rs:106:14
  18:     0x7f8b4afcd09d - core::panicking::panic::h50b51d19800453c0
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/core/src/panicking.rs:47:5
  19:     0x7f8b4d55c540 - <rustc_query_system[7f051701b6960462]::dep_graph::dep_node::DepNode<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind> as rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepNodeExt>::extract_def_id
  20:     0x7f8b4db6b6ae - rustc_query_impl[41b547aa76321427]::query_callbacks::hir_owner::force_from_dep_node
  21:     0x7f8b4de87e21 - <rustc_middle[b2c77fbe63027f7a]::ty::context::TyCtxt as rustc_query_system[7f051701b6960462]::dep_graph::DepContext>::try_force_from_dep_node
  22:     0x7f8b4d0e874c - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  23:     0x7f8b4d0e7bb5 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  24:     0x7f8b4d0e7bb5 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  25:     0x7f8b4d0c2e10 - rustc_data_structures[3cd648c062680881]::stack::ensure_sufficient_stack::<core[cc79c391059f8e46]::option::Option<(core[cc79c391059f8e46]::result::Result<rustc_middle[b2c77fbe63027f7a]::traits::select::EvaluationResult, rustc_middle[b2c77fbe63027f7a]::traits::select::OverflowError>, rustc_query_system[7f051701b6960462]::dep_graph::graph::DepNodeIndex)>, rustc_query_system[7f051701b6960462]::query::plumbing::execute_job<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt, rustc_middle[b2c77fbe63027f7a]::infer::canonical::Canonical<rustc_middle[b2c77fbe63027f7a]::ty::ParamEnvAnd<rustc_middle[b2c77fbe63027f7a]::ty::Predicate>>, core[cc79c391059f8e46]::result::Result<rustc_middle[b2c77fbe63027f7a]::traits::select::EvaluationResult, rustc_middle[b2c77fbe63027f7a]::traits::select::OverflowError>>::{closure#2}>
  26:     0x7f8b4d07a63f - rustc_query_system[7f051701b6960462]::query::plumbing::get_query::<rustc_query_impl[41b547aa76321427]::queries::evaluate_obligation, rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  27:     0x7f8b4d0e5924 - <rustc_query_impl[41b547aa76321427]::Queries as rustc_middle[b2c77fbe63027f7a]::ty::query::QueryEngine>::evaluate_obligation
  28:     0x7f8b4d38e77f - <rustc_trait_selection[94d1ab35a48e091a]::traits::fulfill::FulfillProcessor>::progress_changed_obligations
  29:     0x7f8b4d3c55d2 - <rustc_data_structures[3cd648c062680881]::obligation_forest::ObligationForest<rustc_trait_selection[94d1ab35a48e091a]::traits::fulfill::PendingPredicateObligation>>::process_obligations::<rustc_trait_selection[94d1ab35a48e091a]::traits::fulfill::FulfillProcessor, rustc_data_structures[3cd648c062680881]::obligation_forest::Outcome<rustc_trait_selection[94d1ab35a48e091a]::traits::fulfill::PendingPredicateObligation, rustc_infer[92dc9ce8420627c]::traits::FulfillmentErrorCode>>
  30:     0x7f8b4d38cb7d - <rustc_trait_selection[94d1ab35a48e091a]::traits::fulfill::FulfillmentContext as rustc_infer[92dc9ce8420627c]::traits::engine::TraitEngine>::select_with_constness_where_possible
  31:     0x7f8b4cba88f1 - <rustc_infer[92dc9ce8420627c]::infer::InferCtxtBuilder>::enter::<&rustc_middle[b2c77fbe63027f7a]::ty::context::TypeckResults, <rustc_typeck[33590460456ed24b]::check::inherited::InheritedBuilder>::enter<rustc_typeck[33590460456ed24b]::check::typeck_with_fallback<rustc_typeck[33590460456ed24b]::check::typeck::{closure#0}>::{closure#1}, &rustc_middle[b2c77fbe63027f7a]::ty::context::TypeckResults>::{closure#0}>
  32:     0x7f8b4cb7ca1d - rustc_typeck[33590460456ed24b]::check::typeck
  33:     0x7f8b4db91f33 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[b2c77fbe63027f7a]::ty::context::TyCtxt, rustc_span[b6a32fa5db97fd22]::def_id::LocalDefId, &rustc_middle[b2c77fbe63027f7a]::ty::context::TypeckResults>
  34:     0x7f8b4db5b14e - rustc_data_structures[3cd648c062680881]::stack::ensure_sufficient_stack::<(&rustc_middle[b2c77fbe63027f7a]::ty::context::TypeckResults, rustc_query_system[7f051701b6960462]::dep_graph::graph::DepNodeIndex), rustc_query_system[7f051701b6960462]::query::plumbing::execute_job<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt, rustc_span[b6a32fa5db97fd22]::def_id::LocalDefId, &rustc_middle[b2c77fbe63027f7a]::ty::context::TypeckResults>::{closure#3}>
  35:     0x7f8b4d0482ab - rustc_query_system[7f051701b6960462]::query::plumbing::try_execute_query::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt, rustc_query_system[7f051701b6960462]::query::caches::DefaultCache<rustc_span[b6a32fa5db97fd22]::def_id::LocalDefId, &rustc_middle[b2c77fbe63027f7a]::ty::context::TypeckResults>>
  36:     0x7f8b4da77ab8 - rustc_query_system[7f051701b6960462]::query::plumbing::force_query::<rustc_query_impl[41b547aa76321427]::queries::typeck, rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  37:     0x7f8b4db6d371 - rustc_query_impl[41b547aa76321427]::query_callbacks::typeck::force_from_dep_node
  38:     0x7f8b4de87e21 - <rustc_middle[b2c77fbe63027f7a]::ty::context::TyCtxt as rustc_query_system[7f051701b6960462]::dep_graph::DepContext>::try_force_from_dep_node
  39:     0x7f8b4d0e874c - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  40:     0x7f8b4d0e7bb5 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  41:     0x7f8b4d0e7bb5 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  42:     0x7f8b4d0e7bb5 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  43:     0x7f8b4d0e7bb5 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  44:     0x7f8b4d0e7bb5 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  45:     0x7f8b4d0e7bb5 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  46:     0x7f8b4d0e7bb5 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  47:     0x7f8b4d0c2e10 - rustc_data_structures[3cd648c062680881]::stack::ensure_sufficient_stack::<core[cc79c391059f8e46]::option::Option<(core[cc79c391059f8e46]::result::Result<rustc_middle[b2c77fbe63027f7a]::traits::select::EvaluationResult, rustc_middle[b2c77fbe63027f7a]::traits::select::OverflowError>, rustc_query_system[7f051701b6960462]::dep_graph::graph::DepNodeIndex)>, rustc_query_system[7f051701b6960462]::query::plumbing::execute_job<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt, rustc_middle[b2c77fbe63027f7a]::infer::canonical::Canonical<rustc_middle[b2c77fbe63027f7a]::ty::ParamEnvAnd<rustc_middle[b2c77fbe63027f7a]::ty::Predicate>>, core[cc79c391059f8e46]::result::Result<rustc_middle[b2c77fbe63027f7a]::traits::select::EvaluationResult, rustc_middle[b2c77fbe63027f7a]::traits::select::OverflowError>>::{closure#2}>
  48:     0x7f8b4d07a63f - rustc_query_system[7f051701b6960462]::query::plumbing::get_query::<rustc_query_impl[41b547aa76321427]::queries::evaluate_obligation, rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  49:     0x7f8b4d0e5924 - <rustc_query_impl[41b547aa76321427]::Queries as rustc_middle[b2c77fbe63027f7a]::ty::query::QueryEngine>::evaluate_obligation
  50:     0x7f8b4d38e77f - <rustc_trait_selection[94d1ab35a48e091a]::traits::fulfill::FulfillProcessor>::progress_changed_obligations
  51:     0x7f8b4d3c55d2 - <rustc_data_structures[3cd648c062680881]::obligation_forest::ObligationForest<rustc_trait_selection[94d1ab35a48e091a]::traits::fulfill::PendingPredicateObligation>>::process_obligations::<rustc_trait_selection[94d1ab35a48e091a]::traits::fulfill::FulfillProcessor, rustc_data_structures[3cd648c062680881]::obligation_forest::Outcome<rustc_trait_selection[94d1ab35a48e091a]::traits::fulfill::PendingPredicateObligation, rustc_infer[92dc9ce8420627c]::traits::FulfillmentErrorCode>>
  52:     0x7f8b4d38cb7d - <rustc_trait_selection[94d1ab35a48e091a]::traits::fulfill::FulfillmentContext as rustc_infer[92dc9ce8420627c]::traits::engine::TraitEngine>::select_with_constness_where_possible
  53:     0x7f8b4cb3c7c4 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_argument_types
  54:     0x7f8b4cb236af - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::confirm_builtin_call
  55:     0x7f8b4cb20ac8 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_call
  56:     0x7f8b4cb4ffe9 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_kind
  57:     0x7f8b4cb2af00 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  58:     0x7f8b4cb3c90c - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_argument_types
  59:     0x7f8b4cb236af - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::confirm_builtin_call
  60:     0x7f8b4cb20ac8 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_call
  61:     0x7f8b4cb4ffe9 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_kind
  62:     0x7f8b4cb2af00 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  63:     0x7f8b4cb52586 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_kind
  64:     0x7f8b4cb2af00 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  65:     0x7f8b4cb3feb2 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_decl_local
  66:     0x7f8b4cb40899 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_stmt
  67:     0x7f8b4cb414c1 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_block_with_expected
  68:     0x7f8b4cb2af00 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  69:     0x7f8b4cb5006f - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_kind
  70:     0x7f8b4cb2af00 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  71:     0x7f8b4cb5006f - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_kind
  72:     0x7f8b4cb2af00 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  73:     0x7f8b4cb411ab - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_block_with_expected
  74:     0x7f8b4cb2af00 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  75:     0x7f8b4cb2af00 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  76:     0x7f8b4cb411ab - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_block_with_expected
  77:     0x7f8b4cb2af00 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  78:     0x7f8b4cb2db17 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_return_expr
  79:     0x7f8b4cc32df4 - rustc_typeck[33590460456ed24b]::check::check::check_fn
  80:     0x7f8b4cb4f20e - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_closure
  81:     0x7f8b4cb52d51 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_kind
  82:     0x7f8b4cb2af00 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  83:     0x7f8b4cb3c90c - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_argument_types
  84:     0x7f8b4cb236af - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::confirm_builtin_call
  85:     0x7f8b4cb20ac8 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_call
  86:     0x7f8b4cb4ffe9 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_kind
  87:     0x7f8b4cb2af00 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  88:     0x7f8b4cb2db17 - <rustc_typeck[33590460456ed24b]::check::fn_ctxt::FnCtxt>::check_return_expr
  89:     0x7f8b4cc32df4 - rustc_typeck[33590460456ed24b]::check::check::check_fn
  90:     0x7f8b4cba6a26 - <rustc_infer[92dc9ce8420627c]::infer::InferCtxtBuilder>::enter::<&rustc_middle[b2c77fbe63027f7a]::ty::context::TypeckResults, <rustc_typeck[33590460456ed24b]::check::inherited::InheritedBuilder>::enter<rustc_typeck[33590460456ed24b]::check::typeck_with_fallback<rustc_typeck[33590460456ed24b]::check::typeck::{closure#0}>::{closure#1}, &rustc_middle[b2c77fbe63027f7a]::ty::context::TypeckResults>::{closure#0}>
  91:     0x7f8b4cb7ca1d - rustc_typeck[33590460456ed24b]::check::typeck
  92:     0x7f8b4db91f33 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[b2c77fbe63027f7a]::ty::context::TyCtxt, rustc_span[b6a32fa5db97fd22]::def_id::LocalDefId, &rustc_middle[b2c77fbe63027f7a]::ty::context::TypeckResults>
  93:     0x7f8b4db5b14e - rustc_data_structures[3cd648c062680881]::stack::ensure_sufficient_stack::<(&rustc_middle[b2c77fbe63027f7a]::ty::context::TypeckResults, rustc_query_system[7f051701b6960462]::dep_graph::graph::DepNodeIndex), rustc_query_system[7f051701b6960462]::query::plumbing::execute_job<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt, rustc_span[b6a32fa5db97fd22]::def_id::LocalDefId, &rustc_middle[b2c77fbe63027f7a]::ty::context::TypeckResults>::{closure#3}>
  94:     0x7f8b4d0482ab - rustc_query_system[7f051701b6960462]::query::plumbing::try_execute_query::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt, rustc_query_system[7f051701b6960462]::query::caches::DefaultCache<rustc_span[b6a32fa5db97fd22]::def_id::LocalDefId, &rustc_middle[b2c77fbe63027f7a]::ty::context::TypeckResults>>
  95:     0x7f8b4da77ab8 - rustc_query_system[7f051701b6960462]::query::plumbing::force_query::<rustc_query_impl[41b547aa76321427]::queries::typeck, rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  96:     0x7f8b4db6d371 - rustc_query_impl[41b547aa76321427]::query_callbacks::typeck::force_from_dep_node
  97:     0x7f8b4de87e21 - <rustc_middle[b2c77fbe63027f7a]::ty::context::TyCtxt as rustc_query_system[7f051701b6960462]::dep_graph::DepContext>::try_force_from_dep_node
  98:     0x7f8b4d0e874c - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
  99:     0x7f8b4d0e7bb5 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
 100:     0x7f8b4d0e7bb5 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
 101:     0x7f8b4d0e7bb5 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
 102:     0x7f8b4d0e7bb5 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
 103:     0x7f8b4d0e7bb5 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::try_mark_previous_green::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
 104:     0x7f8b4d0c4d8a - rustc_data_structures[3cd648c062680881]::stack::ensure_sufficient_stack::<core[cc79c391059f8e46]::option::Option<(&rustc_middle[b2c77fbe63027f7a]::ty::TyS, rustc_query_system[7f051701b6960462]::dep_graph::graph::DepNodeIndex)>, rustc_query_system[7f051701b6960462]::query::plumbing::execute_job<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt, rustc_span[b6a32fa5db97fd22]::def_id::DefId, &rustc_middle[b2c77fbe63027f7a]::ty::TyS>::{closure#2}>
 105:     0x7f8b4d0d2768 - <rustc_query_impl[41b547aa76321427]::Queries as rustc_middle[b2c77fbe63027f7a]::ty::query::QueryEngine>::type_of
 106:     0x7f8b4cc216dc - rustc_typeck[33590460456ed24b]::check::check::check_item_type
 107:     0x7f8b4cba433e - <rustc_middle[b2c77fbe63027f7a]::hir::map::Map>::visit_item_likes_in_module::<rustc_typeck[33590460456ed24b]::check::CheckItemTypesVisitor>
 108:     0x7f8b4d8d8a3c - rustc_typeck[33590460456ed24b]::check::check::check_mod_item_types
 109:     0x7f8b4db93ab2 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[b2c77fbe63027f7a]::ty::context::TyCtxt, rustc_span[b6a32fa5db97fd22]::def_id::LocalDefId, ()>
 110:     0x7f8b4db5d67e - rustc_data_structures[3cd648c062680881]::stack::ensure_sufficient_stack::<((), rustc_query_system[7f051701b6960462]::dep_graph::graph::DepNodeIndex), rustc_query_system[7f051701b6960462]::query::plumbing::execute_job<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt, rustc_span[b6a32fa5db97fd22]::def_id::LocalDefId, ()>::{closure#3}>
 111:     0x7f8b4d04aede - rustc_query_system[7f051701b6960462]::query::plumbing::try_execute_query::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt, rustc_query_system[7f051701b6960462]::query::caches::DefaultCache<rustc_span[b6a32fa5db97fd22]::def_id::LocalDefId, ()>>
 112:     0x7f8b4db0f403 - rustc_query_system[7f051701b6960462]::query::plumbing::get_query::<rustc_query_impl[41b547aa76321427]::queries::check_mod_item_types, rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
 113:     0x7f8b4d88bdd2 - <rustc_middle[b2c77fbe63027f7a]::hir::map::Map>::for_each_module::<rustc_typeck[33590460456ed24b]::check_crate::{closure#6}::{closure#0}>
 114:     0x7f8b4d87d930 - <rustc_session[9024c0122e896071]::session::Session>::time::<(), rustc_typeck[33590460456ed24b]::check_crate::{closure#6}>
 115:     0x7f8b4d873173 - rustc_typeck[33590460456ed24b]::check_crate
 116:     0x7f8b4d6270d7 - rustc_interface[fdf6df4a042dd987]::passes::analysis
 117:     0x7f8b4dbaf2b0 - <rustc_query_system[7f051701b6960462]::dep_graph::graph::DepGraph<rustc_middle[b2c77fbe63027f7a]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[b2c77fbe63027f7a]::ty::context::TyCtxt, (), core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>>
 118:     0x7f8b4db565c3 - rustc_data_structures[3cd648c062680881]::stack::ensure_sufficient_stack::<(core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>, rustc_query_system[7f051701b6960462]::dep_graph::graph::DepNodeIndex), rustc_query_system[7f051701b6960462]::query::plumbing::execute_job<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt, (), core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>>::{closure#3}>
 119:     0x7f8b4dabac76 - rustc_query_system[7f051701b6960462]::query::plumbing::try_execute_query::<rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt, rustc_query_system[7f051701b6960462]::query::caches::DefaultCache<(), core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>>>
 120:     0x7f8b4db1d0e5 - rustc_query_system[7f051701b6960462]::query::plumbing::get_query::<rustc_query_impl[41b547aa76321427]::queries::analysis, rustc_query_impl[41b547aa76321427]::plumbing::QueryCtxt>
 121:     0x7f8b4d6177d9 - <rustc_interface[fdf6df4a042dd987]::passes::QueryContext>::enter::<rustc_driver[3d33b2d383bdce56]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>>
 122:     0x7f8b4d605ba4 - <rustc_interface[fdf6df4a042dd987]::interface::Compiler>::enter::<rustc_driver[3d33b2d383bdce56]::run_compiler::{closure#1}::{closure#2}, core[cc79c391059f8e46]::result::Result<core[cc79c391059f8e46]::option::Option<rustc_interface[fdf6df4a042dd987]::queries::Linker>, rustc_errors[932abaefb61eb634]::ErrorReported>>
 123:     0x7f8b4d5f5f7f - rustc_span[b6a32fa5db97fd22]::with_source_map::<core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>, rustc_interface[fdf6df4a042dd987]::interface::create_compiler_and_run<core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>, rustc_driver[3d33b2d383bdce56]::run_compiler::{closure#1}>::{closure#0}>
 124:     0x7f8b4d606ad0 - <scoped_tls[3fea4c3dcac147b1]::ScopedKey<rustc_span[b6a32fa5db97fd22]::SessionGlobals>>::set::<rustc_interface[fdf6df4a042dd987]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustc_interface[fdf6df4a042dd987]::interface::run_compiler<core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>, rustc_driver[3d33b2d383bdce56]::run_compiler::{closure#1}>::{closure#0}, core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>>::{closure#0}::{closure#0}, core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>>
 125:     0x7f8b4d5f8a25 - std[fcea40badc263c8f]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[fdf6df4a042dd987]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustc_interface[fdf6df4a042dd987]::interface::run_compiler<core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>, rustc_driver[3d33b2d383bdce56]::run_compiler::{closure#1}>::{closure#0}, core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>>::{closure#0}, core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>>
 126:     0x7f8b4d5f4b42 - <<std[fcea40badc263c8f]::thread::Builder>::spawn_unchecked<rustc_interface[fdf6df4a042dd987]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustc_interface[fdf6df4a042dd987]::interface::run_compiler<core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>, rustc_driver[3d33b2d383bdce56]::run_compiler::{closure#1}>::{closure#0}, core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>>::{closure#0}, core[cc79c391059f8e46]::result::Result<(), rustc_errors[932abaefb61eb634]::ErrorReported>>::{closure#1} as core[cc79c391059f8e46]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
 127:     0x7f8b4b013513 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd81bd86213781012
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/alloc/src/boxed.rs:1691:9
 128:     0x7f8b4b013513 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7b3e346f5d8f6d6a
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/alloc/src/boxed.rs:1691:9
 129:     0x7f8b4b013513 - std::sys::unix::thread::Thread::new::thread_start::ha575792f17151d60
                               at /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f/library/std/src/sys/unix/thread.rs:106:17
 130:     0x7f8b4af50609 - start_thread
                               at /build/glibc-YbNSs7/glibc-2.31/nptl/pthread_create.c:477:8
 131:     0x7f8b4ae64293 - clone
 132:                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/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.58.0-nightly (ff0e14829 2021-10-31) running on x86_64-unknown-linux-gnu

note: compiler flags: -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 [evaluate_obligation] evaluating trait selection obligation `impl core::future::future::Future: core::marker::Send`
#1 [typeck] type-checking `diagnostic::server::<impl at src/diagnostic/server.rs:37:1: 96:2>::start`
#2 [evaluate_obligation] evaluating trait selection obligation `impl core::future::future::Future: core::marker::Send`
#3 [typeck] type-checking `run`
#4 [type_of] computing type of `run::{opaque#0}`
#5 [check_mod_item_types] checking item types in top-level module
#6 [analysis] running analysis passes on this crate
end of query stack
error: could not compile `thing`
</p>
</details>

[yanchith]

Same happens to me after renaming a type manually. rustc 1.58.0-nightly (ff0e14829 2021-10-31) running on x86_64-pc-windows-msvc

thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', /rustc/ff0e14829e1806ca0d4226595f7fdf3e8658758f\compiler\rustc_hir\src\definitions.rs:452:14
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.

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 1.58.0-nightly (ff0e14829 2021-10-31) running on x86_64-pc-windows-msvc

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

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

query stack during panic:
#0 [analysis] running analysis passes on this crate
end of query stack
error: could not compile `ph`

Unfortunately I can't release the source that triggers this, but let me know if there's something I can do to help.

UPDATE: For the same source, this seems to not happen anymore on rustc 1.58.0-nightly (495322d77 2021-11-08). It used to happen pretty regularly, forcing me to find type names that don't crash the compiler. Will post here again, if I can reproduce on 495322d77 2021-11-08

[BGR360]

Looks like a known incremental compilation bug. That's probably why it's so hit-or-miss.

See #91696. Hopefully fixed by #91919.

@rustbot label +A-incr-comp

[marioortizmanero]

This just happened to me with 1.58.0 (7f08ace4f 2021-11-24), and I wasn't renaming anything. Just refactoring some code and then ran into the error. Unfortunately, it's quite hard to track down, and after a cargo clean it was indeed fixed:

(sorry for screenshot instead of copy-paste, I forgot to gather information about the bug before cleaning)

[Aaron1011]

@marioortizmanero: This should be fixed in the latest nightly by #93064

[workingjubilee]

Closing as resolved.