Closed
Description
This has happened to me twice today on the at-the-time current nightly, first time I ran cargo clean and the error went away and this time I ran a different nightly while trying to find out more and that also made the error go away.
To me it seems to be related to some on-disk cache so it might be relevant that it happened while I was running rust-analyzer and both rustc and rustdoc on every file change and they'd race each time who gets to run first.
Code
This doesn't seem to be caused by the code itself, if I undo my last change before the crash appears it persists and it goes away with cargo clean without any change to code.
Meta
rustc --version --verbose:
rustc 1.57.0-nightly (73422130e 2021-09-24)
binary: rustc
commit-hash: 73422130ee96c09e7214c876a3600ac1f32aa8c8
commit-date: 2021-09-24
host: x86_64-unknown-linux-gnu
release: 1.57.0-nightly
LLVM version: 13.0.0
Error output
thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', /rustc/73422130ee96c09e7214c876a3600ac1f32aa8c8/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 1.57.0-nightly (73422130e 2021-09-24) running on x86_64-unknown-linux-gnu
note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C linker=clang -C incremental -C link-arg=-fuse-ld=/usr/local/bin/mold --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 `lipo`
Backtrace
thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', /rustc/73422130ee96c09e7214c876a3600ac1f32aa8c8/compiler/rustc_hir/src/definitions.rs:452:14
stack backtrace:
0: rust_begin_unwind
at /rustc/73422130ee96c09e7214c876a3600ac1f32aa8c8/library/std/src/panicking.rs:517:5
1: core::panicking::panic_fmt
at /rustc/73422130ee96c09e7214c876a3600ac1f32aa8c8/library/core/src/panicking.rs:100:14
2: core::panicking::panic
at /rustc/73422130ee96c09e7214c876a3600ac1f32aa8c8/library/core/src/panicking.rs:50:5
3: <rustc_query_impl::on_disk_cache::OnDiskCache as rustc_middle::ty::context::OnDiskCache>::def_path_hash_to_def_id
4: rustc_middle::dep_graph::dep_node::<impl rustc_query_system::dep_graph::dep_node::DepNodeParams<rustc_middle::ty::context::TyCtxt> for rustc_span::def_id::LocalDefId>::recover
5: rustc_query_impl::query_callbacks::hir_owner::force_from_dep_node
6: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
7: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
8: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
9: rustc_query_system::dep_graph::graph::DepGraph<K>::try_mark_previous_green
10: rustc_query_system::query::plumbing::ensure_must_run
11: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::coherent_trait
12: rustc_session::session::Session::track_errors
13: rustc_typeck::check_crate
14: rustc_interface::passes::analysis
15: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task
16: rustc_data_structures::stack::ensure_sufficient_stack
17: rustc_query_system::query::plumbing::try_execute_query
18: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis
19: rustc_interface::passes::QueryContext::enter
20: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
21: rustc_span::with_source_map
22: scoped_tls::ScopedKey<T>::set
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace