ICE: rustc_ast_lowering: no entry found for key

[matthiaskrgr]

auto-reduced (treereduce-rust):

trait Trait: ToReuse {
    reuse Trait::lolno { &self.0 };
}

original:

trait Trait: ToReuse {
    reuse Trait::lolno { &self.0 };
}

struct _Nope;

Version information

rustc 1.79.0-nightly (7bb4f0889 2024-04-24)
binary: rustc
commit-hash: 7bb4f0889e8b133c5b03c46f31f2ae6432c00219
commit-date: 2024-04-24
host: x86_64-unknown-linux-gnu
release: 1.79.0-nightly
LLVM version: 18.1.4

Command:
/home/matthias/.rustup/toolchains/master/bin/rustc

Program output

error: non-item in item list
 --> /tmp/icemaker_global_tempdir.lEaHpLdEU8PF/rustc_testrunner_tmpdir_reporting.NIN84Sl6wsUE/mvce.rs:2:35
  |
1 | trait Trait: ToReuse {
  |                      - item list starts here
2 |     reuse Trait::lolno { &self.0 };
  |                                   ^
  |                                   |
  |                                   non-item starts here
  |                                   help: consider removing this semicolon
3 | }
  | - item list ends here

error[E0405]: cannot find trait `ToReuse` in this scope
 --> /tmp/icemaker_global_tempdir.lEaHpLdEU8PF/rustc_testrunner_tmpdir_reporting.NIN84Sl6wsUE/mvce.rs:1:14
  |
1 | trait Trait: ToReuse {
  |              ^^^^^^^ not found in this scope

error[E0658]: functions delegation is not yet fully implemented
 --> /tmp/icemaker_global_tempdir.lEaHpLdEU8PF/rustc_testrunner_tmpdir_reporting.NIN84Sl6wsUE/mvce.rs:2:5
  |
2 |     reuse Trait::lolno { &self.0 };
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #118212 <https://github.com/rust-lang/rust/issues/118212> for more information
  = help: add `#![feature(fn_delegation)]` to the crate attributes to enable
  = note: this compiler was built on 2024-04-24; consider upgrading it if it is out of date

thread 'rustc' panicked at compiler/rustc_ast_lowering/src/delegation.rs:70:45:
no entry found for key
stack backtrace:
   0:     0x763d86a04145 - std::backtrace_rs::backtrace::libunwind::trace::h86d426b17d4e2e3d
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
   1:     0x763d86a04145 - std::backtrace_rs::backtrace::trace_unsynchronized::h8c0ef1d148b9d940
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x763d86a04145 - std::sys_common::backtrace::_print_fmt::he2abce7aa62cdc3a
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/std/src/sys_common/backtrace.rs:68:5
   3:     0x763d86a04145 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h0c9241533158777f
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x763d86a5321b - core::fmt::rt::Argument::fmt::h733dbde17a4a7d04
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/core/src/fmt/rt.rs:165:63
   5:     0x763d86a5321b - core::fmt::write::h03896a7fdcd4b82f
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/core/src/fmt/mod.rs:1157:21
   6:     0x763d869f8d4f - std::io::Write::write_fmt::hd74e7c0305df2660
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/std/src/io/mod.rs:1832:15
   7:     0x763d86a03f1e - std::sys_common::backtrace::_print::hea8c9c28ab87b1b7
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x763d86a03f1e - std::sys_common::backtrace::print::hd4bb5623fa4b8de6
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x763d86a06889 - std::panicking::default_hook::{{closure}}::h4623b55631f16943
  10:     0x763d86a065cd - std::panicking::default_hook::he5d3fa1d7e671103
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/std/src/panicking.rs:298:9
  11:     0x763d832456ab - std[73cef507c0358b10]::panicking::update_hook::<alloc[3ec83808c4b91c16]::boxed::Box<rustc_driver_impl[2d410f393cf62b06]::install_ice_hook::{closure#0}>>::{closure#0}
  12:     0x763d86a06f86 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h8ef97572a456b9c7
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/alloc/src/boxed.rs:2036:9
  13:     0x763d86a06f86 - std::panicking::rust_panic_with_hook::h1e2384e63ce90283
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/std/src/panicking.rs:799:13
  14:     0x763d86a06d34 - std::panicking::begin_panic_handler::{{closure}}::h8399fde27d16fbcc
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/std/src/panicking.rs:664:13
  15:     0x763d86a04609 - std::sys_common::backtrace::__rust_end_short_backtrace::hbc2e58d3e2bbc56f
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/std/src/sys_common/backtrace.rs:171:18
  16:     0x763d86a06a67 - rust_begin_unwind
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/std/src/panicking.rs:652:5
  17:     0x763d86a4f6e3 - core::panicking::panic_fmt::h1b24b925c3ff40f0
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/core/src/panicking.rs:72:14
  18:     0x763d86a4f89c - core::panicking::panic_display::h97d6a5a7742fb64d
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/core/src/panicking.rs:263:5
  19:     0x763d86a4f48c - core::option::expect_failed::ha02463fea35638a7
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/core/src/option.rs:1994:5
  20:     0x763d82efc8cc - <rustc_ast_lowering[234a1b302e77c7fa]::LoweringContext>::delegation_has_self
  21:     0x763d84d0091d - <rustc_ast_lowering[234a1b302e77c7fa]::LoweringContext>::lower_item_kind
  22:     0x763d84d1045c - <rustc_ast_lowering[234a1b302e77c7fa]::item::ItemLowerer>::lower_node
  23:     0x763d84d0b325 - rustc_ast_lowering[234a1b302e77c7fa]::lower_to_hir
  24:     0x763d853c32a0 - rustc_query_impl[e8a6f5b0469e51af]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e8a6f5b0469e51af]::query_impl::hir_crate::dynamic_query::{closure#2}::{closure#0}, rustc_middle[65b49a3b5d6c0d49]::query::erase::Erased<[u8; 8usize]>>
  25:     0x763d853c0574 - rustc_query_system[ccb87b148b9f71e3]::query::plumbing::try_execute_query::<rustc_query_impl[e8a6f5b0469e51af]::DynamicConfig<rustc_query_system[ccb87b148b9f71e3]::query::caches::SingleCache<rustc_middle[65b49a3b5d6c0d49]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[e8a6f5b0469e51af]::plumbing::QueryCtxt, false>
  26:     0x763d853c0160 - rustc_query_impl[e8a6f5b0469e51af]::query_impl::hir_crate::get_query_non_incr::__rust_end_short_backtrace
  27:     0x763d84e297e1 - rustc_query_impl[e8a6f5b0469e51af]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e8a6f5b0469e51af]::query_impl::hir_attrs::dynamic_query::{closure#2}::{closure#0}, rustc_middle[65b49a3b5d6c0d49]::query::erase::Erased<[u8; 8usize]>>
  28:     0x763d84e28d9b - rustc_query_system[ccb87b148b9f71e3]::query::plumbing::try_execute_query::<rustc_query_impl[e8a6f5b0469e51af]::DynamicConfig<rustc_query_system[ccb87b148b9f71e3]::query::caches::VecCache<rustc_hir[9c48b1d67895ee11]::hir_id::OwnerId, rustc_middle[65b49a3b5d6c0d49]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[e8a6f5b0469e51af]::plumbing::QueryCtxt, false>
  29:     0x763d84e28b09 - rustc_query_impl[e8a6f5b0469e51af]::query_impl::hir_attrs::get_query_non_incr::__rust_end_short_backtrace
  30:     0x763d8473611a - <rustc_middle[65b49a3b5d6c0d49]::hir::map::Map>::attrs
  31:     0x763d85533c43 - rustc_passes[ca9bc1310163fd3e]::entry::entry_fn
  32:     0x763d85533bd8 - rustc_query_impl[e8a6f5b0469e51af]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e8a6f5b0469e51af]::query_impl::entry_fn::dynamic_query::{closure#2}::{closure#0}, rustc_middle[65b49a3b5d6c0d49]::query::erase::Erased<[u8; 12usize]>>
  33:     0x763d85533bb1 - <rustc_query_impl[e8a6f5b0469e51af]::query_impl::entry_fn::dynamic_query::{closure#2} as core[dad89120088e7e02]::ops::function::FnOnce<(rustc_middle[65b49a3b5d6c0d49]::ty::context::TyCtxt, ())>>::call_once
  34:     0x763d855334d2 - rustc_query_system[ccb87b148b9f71e3]::query::plumbing::try_execute_query::<rustc_query_impl[e8a6f5b0469e51af]::DynamicConfig<rustc_query_system[ccb87b148b9f71e3]::query::caches::SingleCache<rustc_middle[65b49a3b5d6c0d49]::query::erase::Erased<[u8; 12usize]>>, false, false, false>, rustc_query_impl[e8a6f5b0469e51af]::plumbing::QueryCtxt, false>
  35:     0x763d85533291 - rustc_query_impl[e8a6f5b0469e51af]::query_impl::entry_fn::get_query_non_incr::__rust_end_short_backtrace
  36:     0x763d849ef232 - rustc_interface[b73225351c325ab5]::passes::analysis
  37:     0x763d849ef055 - rustc_query_impl[e8a6f5b0469e51af]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e8a6f5b0469e51af]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[65b49a3b5d6c0d49]::query::erase::Erased<[u8; 1usize]>>
  38:     0x763d853be665 - rustc_query_system[ccb87b148b9f71e3]::query::plumbing::try_execute_query::<rustc_query_impl[e8a6f5b0469e51af]::DynamicConfig<rustc_query_system[ccb87b148b9f71e3]::query::caches::SingleCache<rustc_middle[65b49a3b5d6c0d49]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[e8a6f5b0469e51af]::plumbing::QueryCtxt, false>
  39:     0x763d853be3c9 - rustc_query_impl[e8a6f5b0469e51af]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  40:     0x763d85245993 - rustc_interface[b73225351c325ab5]::interface::run_compiler::<core[dad89120088e7e02]::result::Result<(), rustc_span[ec1f1d58828cad2c]::ErrorGuaranteed>, rustc_driver_impl[2d410f393cf62b06]::run_compiler::{closure#0}>::{closure#1}
  41:     0x763d8522f8e7 - std[73cef507c0358b10]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[b73225351c325ab5]::util::run_in_thread_with_globals<rustc_interface[b73225351c325ab5]::util::run_in_thread_pool_with_globals<rustc_interface[b73225351c325ab5]::interface::run_compiler<core[dad89120088e7e02]::result::Result<(), rustc_span[ec1f1d58828cad2c]::ErrorGuaranteed>, rustc_driver_impl[2d410f393cf62b06]::run_compiler::{closure#0}>::{closure#1}, core[dad89120088e7e02]::result::Result<(), rustc_span[ec1f1d58828cad2c]::ErrorGuaranteed>>::{closure#0}, core[dad89120088e7e02]::result::Result<(), rustc_span[ec1f1d58828cad2c]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[dad89120088e7e02]::result::Result<(), rustc_span[ec1f1d58828cad2c]::ErrorGuaranteed>>
  42:     0x763d8522f6aa - <<std[73cef507c0358b10]::thread::Builder>::spawn_unchecked_<rustc_interface[b73225351c325ab5]::util::run_in_thread_with_globals<rustc_interface[b73225351c325ab5]::util::run_in_thread_pool_with_globals<rustc_interface[b73225351c325ab5]::interface::run_compiler<core[dad89120088e7e02]::result::Result<(), rustc_span[ec1f1d58828cad2c]::ErrorGuaranteed>, rustc_driver_impl[2d410f393cf62b06]::run_compiler::{closure#0}>::{closure#1}, core[dad89120088e7e02]::result::Result<(), rustc_span[ec1f1d58828cad2c]::ErrorGuaranteed>>::{closure#0}, core[dad89120088e7e02]::result::Result<(), rustc_span[ec1f1d58828cad2c]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[dad89120088e7e02]::result::Result<(), rustc_span[ec1f1d58828cad2c]::ErrorGuaranteed>>::{closure#2} as core[dad89120088e7e02]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  43:     0x763d86a10e1b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3679caeb60ab03c2
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/alloc/src/boxed.rs:2022:9
  44:     0x763d86a10e1b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7e27b57c37e0ef1f
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/alloc/src/boxed.rs:2022:9
  45:     0x763d86a10e1b - std::sys::pal::unix::thread::Thread::new::thread_start::he8797429d1c20e6e
                               at /rustc/7bb4f0889e8b133c5b03c46f31f2ae6432c00219/library/std/src/sys/pal/unix/thread.rs:108:17
  46:     0x763d867af55a - <unknown>
  47:     0x763d8682ca3c - <unknown>
  48:                0x0 - <unknown>

error: 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: please make sure that you have updated to the latest nightly

note: rustc 1.79.0-nightly (7bb4f0889 2024-04-24) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [hir_crate] getting the crate HIR
#1 [hir_attrs] getting HIR owner attributes in ``
#2 [entry_fn] looking up the entry function of a crate
#3 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 3 previous errors

Some errors have detailed explanations: E0405, E0658.
For more information about an error, try `rustc --explain E0405`.

[matthiaskrgr]

#122500

[compiler-errors]

cc @petrochenkov