The Bug is not reproducible. I started removing code portions and it went away. When i returned to the original codebase the error did not show up anymore.
Relabeling issues which don't have a runnable reproduction (as opposed to having a non-minimized one) to the new label S-needs-repro.
@rustbot label +S-needs-repro -E-needs-mcve
Code
The Bug is not reproducible. I started removing code portions and it went away. When i returned to the original codebase the error did not show up anymore.
Meta
rustc --version --verbose
:Error output
Backtrace
``` thread 'rustc' panicked at 'Box', compiler/rustc_errors/src/lib.rs:1426:13
stack backtrace:
0: 0x7041b3ec - std::backtrace_rs::backtrace::libunwind::trace::h3ecd63e968c83846
at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7041b3ec - std::backtrace_rs::backtrace::trace_unsynchronized::h896664514e76113d
at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7041b3ec - std::sys_common::backtrace::_print_fmt::h32a493fae6d6e47d
at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/sys_common/backtrace.rs:66:5
3: 0x7041b3ec - ::fmt::h89340f3152c95102
at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/sys_common/backtrace.rs:45:22
4: 0x7047cb54 - core::fmt::write::hf26afd71bfef8aed
at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/core/src/fmt/mod.rs:1198:17
5: 0x7040c044 - std::io::Write::write_fmt::h225e7fbfbeb51eec
at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/io/mod.rs:1672:15
6: 0x7041e24c - std::sys_common::backtrace::_print::h13859e44db890857
at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/sys_common/backtrace.rs:48:5
7: 0x7041e24c - std::sys_common::backtrace::print::hc4a57fb97f305659
at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/sys_common/backtrace.rs:35:9
8: 0x7041e24c - std::panicking::default_hook::{{closure}}::h996827eba435227c
at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/panicking.rs:295:22
9: 0x7041dd9c - std::panicking::default_hook::hc99ce20dccce3df7
at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/panicking.rs:314:9
10: 0x70bd29ec - rustc_driver[7881d5c37187b3a4]::DEFAULT_HOOK::{closure#0}::{closure#0}
11: 0x7041eaf0 - std::panicking::rust_panic_with_hook::h85a0c3f40405fe00
at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/panicking.rs:702:17
12: 0x7501cce8 - std[da286ee42fadf1f1]::panicking::begin_panic::::{closure#0}
13: 0x7501c274 - std[da286ee42fadf1f1]::sys_common::backtrace::__rust_end_short_backtrace::::{closure#0}, !>
14: 0x70aace34 - std[da286ee42fadf1f1]::panicking::begin_panic::
15: 0x7504b114 - std[da286ee42fadf1f1]::panic::panic_any::
16: 0x7504f710 - ::drop
17: 0x70b57e78 - core[e2a9bb8601623f47]::ptr::drop_in_place::
18: 0x70b5ca10 - as core[e2a9bb8601623f47]::ops::drop::Drop>::drop
19: 0x70b4abcc - core[e2a9bb8601623f47]::ptr::drop_in_place::
20: 0x70b47efc - rustc_span[4d7eb4f6f3e21c1e]::with_source_map::, rustc_interface[39094ec9bec4071e]::interface::create_compiler_and_run, rustc_driver[7881d5c37187b3a4]::run_compiler::{closure#1}>::{closure#1}>
21: 0x70b64360 - >::set::, rustc_driver[7881d5c37187b3a4]::run_compiler::{closure#1}>::{closure#0}, core[e2a9bb8601623f47]::result::Result<(), rustc_errors[5bb956a73f090e4a]::ErrorGuaranteed>>
22: 0x70bbd32c - std[da286ee42fadf1f1]::sys_common::backtrace::__rust_begin_short_backtrace::, rustc_driver[7881d5c37187b3a4]::run_compiler::{closure#1}>::{closure#0}, core[e2a9bb8601623f47]::result::Result<(), rustc_errors[5bb956a73f090e4a]::ErrorGuaranteed>>::{closure#0}, core[e2a9bb8601623f47]::result::Result<(), rustc_errors[5bb956a73f090e4a]::ErrorGuaranteed>>
23: 0x70b85fc0 - <::spawn_unchecked_, rustc_driver[7881d5c37187b3a4]::run_compiler::{closure#1}>::{closure#0}, core[e2a9bb8601623f47]::result::Result<(), rustc_errors[5bb956a73f090e4a]::ErrorGuaranteed>>::{closure#0}, core[e2a9bb8601623f47]::result::Result<(), rustc_errors[5bb956a73f090e4a]::ErrorGuaranteed>>::{closure#1} as core[e2a9bb8601623f47]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
24: 0x70429278 - as core::ops::function::FnOnce>::call_once::he24fa73697888656
at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/alloc/src/boxed.rs:1935:9
25: 0x70429278 - as core::ops::function::FnOnce>::call_once::h39d16b8bb7454122
at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/alloc/src/boxed.rs:1935:9
26: 0x70429278 - std::sys::unix::thread::Thread::new::thread_start::hca3b91966e7d4fc2
at /rustc/a55dd71d5fb0ec5a6a3a9e8c27b2127ba491ce52/library/std/src/sys/unix/thread.rs:108:17
note: rustc 1.64.0 (a55dd71d5 2022-09-19) running on armv7-unknown-linux-gnueabihf
note: compiler flags: --crate-type bin -C embed-bitcode=no -C debuginfo=2 -C incremental
note: some of the compiler flags provided by cargo are hidden
```