ICE: compiler/rustc_middle/src/hir/map/mod.rs:764:18: expected item, found trait method

[chengniansun]

Code

trait Foo {
    #[doc(keyword = "match")]
    fn quux() {}
}

Meta

rustc --version --verbose:

rustc 1.53.0-nightly (52e3dffa5 2021-03-25)
binary: rustc
commit-hash: 52e3dffa50cfffdcfa145c0cc0ba48b49abc0c07
commit-date: 2021-03-25
host: x86_64-unknown-linux-gnu
release: 1.53.0-nightly
LLVM version: 12.0.0

Error output

error[E0658]: `#[doc(keyword)]` is experimental
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:2:5
  |
2 |     #[doc(keyword = "match")]
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #51315 <https://github.com/rust-lang/rust/issues/51315> for more information
  = help: add `#![feature(doc_keyword)]` to the crate attributes to enable

error[E0601]: `main` function not found in crate `perses_node_priority_with_dfs_delta_reduced_mutant`
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:1:1
  |
1 | / trait Foo {
2 | |     #[doc(keyword = "match")]
3 | |     fn quux() {}
4 | | }
  | |_^ consider adding a `main` function to `perses_node_priority_with_dfs_delta_reduced_mutant.rs`

error: internal compiler error: compiler/rustc_middle/src/hir/map/mod.rs:764:18: expected item, found trait method quux in Foo::quux (hir_id=HirId { owner: DefId(0:4 ~ perses_node_priority_with_dfs_delta_reduced_mutant[317d]::Foo::quux), local_id: 0 })

thread 'rustc' panicked at 'Box<Any>', /rustc/52e3dffa50cfffdcfa145c0cc0ba48b49abc0c07/library/std/src/panic.rs:59:5
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

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 1.53.0-nightly (52e3dffa5 2021-03-25) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [check_mod_attrs] checking attributes in top-level module
#1 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 3 previous errors

Some errors have detailed explanations: E0601, E0658.
For more information about an error, try `rustc --explain E0601`.

Backtrace

error[E0658]: `#[doc(keyword)]` is experimental
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:2:5
  |
2 |     #[doc(keyword = "match")]
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #51315 <https://github.com/rust-lang/rust/issues/51315> for more information
  = help: add `#![feature(doc_keyword)]` to the crate attributes to enable

error[E0601]: `main` function not found in crate `perses_node_priority_with_dfs_delta_reduced_mutant`
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:1:1
  |
1 | / trait Foo {
2 | |     #[doc(keyword = "match")]
3 | |     fn quux() {}
4 | | }
  | |_^ consider adding a `main` function to `perses_node_priority_with_dfs_delta_reduced_mutant.rs`

error: internal compiler error: compiler/rustc_middle/src/hir/map/mod.rs:764:18: expected item, found trait method quux in Foo::quux (hir_id=HirId { owner: DefId(0:4 ~ perses_node_priority_with_dfs_delta_reduced_mutant[317d]::Foo::quux), local_id: 0 })

thread 'rustc' panicked at 'Box<Any>', /rustc/52e3dffa50cfffdcfa145c0cc0ba48b49abc0c07/library/std/src/panic.rs:59:5
stack backtrace:
   0: std::panicking::begin_panic
   1: std::panic::panic_any
   2: rustc_errors::HandlerInner::bug
   3: rustc_errors::Handler::bug
   4: rustc_middle::ty::context::tls::with_opt
   5: rustc_middle::util::bug::opt_span_bug_fmt
   6: rustc_middle::util::bug::bug_fmt
   7: rustc_middle::hir::map::Map::expect_item
   8: rustc_passes::check_attr::CheckAttrVisitor::check_attributes
   9: rustc_middle::hir::map::Map::visit_item_likes_in_module
  10: rustc_passes::check_attr::check_mod_attrs
  11: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  12: rustc_query_system::query::plumbing::force_query_with_job
  13: rustc_query_system::query::plumbing::get_query_impl
  14: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::check_mod_attrs
  15: std::panic::catch_unwind
  16: rustc_session::utils::<impl rustc_session::session::Session>::time
  17: rustc_interface::passes::analysis
  18: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  19: rustc_data_structures::stack::ensure_sufficient_stack
  20: rustc_query_system::query::plumbing::force_query_with_job
  21: rustc_query_system::query::plumbing::get_query_impl
  22: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis
  23: rustc_interface::passes::QueryContext::enter
  24: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
  25: rustc_span::with_source_map
  26: rustc_interface::interface::create_compiler_and_run
  27: scoped_tls::ScopedKey<T>::set
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

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 1.53.0-nightly (52e3dffa5 2021-03-25) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [check_mod_attrs] checking attributes in top-level module
#1 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 3 previous errors

Some errors have detailed explanations: E0601, E0658.
For more information about an error, try `rustc --explain E0601`.