Closed
Description
Code
I wasn't able to find a MVE, but the error stopped after running cargo clean. I was not able to reproduce it, but the modification that (seemed to) prompt the crash looks something like this:
use t::SomeTrait;
struct A {}
impl SomeTrait for A {}changed to
use t::SomeTrait as TSomeTrait;
struct SomeTrait {}
impl TSomeTrait for SomeTrait {}Redoing the same refactor, even after another cargo clean, did not reproduce the error.
Meta
rustc --version --verbose:
rustc 1.57.0 (f1edd0429 2021-11-29)
binary: rustc
commit-hash: f1edd0429582dd29cccacaf50fd134b05593bd9c
commit-date: 2021-11-29
host: x86_64-unknown-linux-gnu
release: 1.57.0
LLVM version: 13.0.0
Also exists on nightly
Error output
thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', /rustc/f1edd0429582dd29cccacaf50fd134b05593bd9c/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 (f1edd0429 2021-11-29) running on x86_64-unknown-linux-gnu
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 `rando_parser`
Backtrace
stack backtrace:
0: rust_begin_unwind
at /rustc/f1edd0429582dd29cccacaf50fd134b05593bd9c/library/std/src/panicking.rs:517:5
1: core::panicking::panic_fmt
at /rustc/f1edd0429582dd29cccacaf50fd134b05593bd9c/library/core/src/panicking.rs:100:14
2: core::panicking::panic
at /rustc/f1edd0429582dd29cccacaf50fd134b05593bd9c/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