[Pkg-rust-maintainers] Bug#1108776: rust-utf8-width: autopkgtest regression: NotFound, message: "No such file or directory"

[Paul Gevers]

Source: rust-utf8-width
Version: 0.1.5-1
Severity: serious
User: debian-ci at lists.debian.org
Usertags: regression

Dear maintainer(s),

Your package has an autopkgtest, great. However, it fails since May 
2022. Can you please investigate the situation and fix it? I copied some 
of the output at the bottom of this report.

The release team has announced [1] that failing autopkgtest on amd64 and 
arm64 are considered RC in testing.

More information about this bug and the reason for filing it can be 
found on 
https://wiki.debian.org/ContinuousIntegration/RegressionEmailInformation

With my Release Team member hat on I allow you to tag this bug as 
trixie-ignore if this is nearly completely a test issue as it's so late 
in the freeze and it's not worth removing the package from trixie 
because of a failing test at this moment unless it exposes a much bigger 
issue. Having said that, if this is a test only issue and a fix is 
possible without fully removing the autopkgtest and without making the 
test superficial, it's still welcome, but it would need to happen soon.

Paul

[1] https://lists.debian.org/debian-devel-announce/2019/07/msg00002.html

https://ci.debian.net/data/autopkgtest/testing/amd64/r/rust-utf8-width/61525446/log.gz

  29s test retrieve_get_width                  ...
  29s thread 'main' panicked at benches/bench.rs:36:37:
  29s called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: 
NotFound, message: "No such file or directory" }
  29s stack backtrace:
  29s    0: rust_begin_unwind
  29s              at 
/usr/src/rustc-1.85.0/library/std/src/panicking.rs:692:5
  29s    1: core::panicking::panic_fmt
  29s              at 
/usr/src/rustc-1.85.0/library/core/src/panicking.rs:75:14
  29s    2: core::result::unwrap_failed
  29s              at 
/usr/src/rustc-1.85.0/library/core/src/result.rs:1704:5
  29s    3: core::result::Result<T,E>::unwrap
  29s              at 
/usr/src/rustc-1.85.0/library/core/src/result.rs:1109:23
  29s    4: bench::retrieve_get_width
  29s              at ./benches/bench.rs:36:17
  29s    5: bencher::run_test::{{closure}}
  29s              at /usr/share/cargo/registry/bencher-0.1.5/lib.rs:571:51
  29s    6: bencher::Bencher::auto_bench::{{closure}}
  29s              at /usr/share/cargo/registry/bencher-0.1.5/lib.rs:637:29
  29s    7: bencher::Bencher::bench_n
  29s              at /usr/share/cargo/registry/bencher-0.1.5/lib.rs:628:9
  29s    8: bencher::Bencher::auto_bench
  29s              at /usr/share/cargo/registry/bencher-0.1.5/lib.rs:637:9
  29s    9: bencher::bench::benchmark
  29s              at /usr/share/cargo/registry/bencher-0.1.5/lib.rs:716:28
  29s   10: bencher::run_test
  29s              at /usr/share/cargo/registry/bencher-0.1.5/lib.rs:571:22
  29s   11: bencher::run_tests
  29s              at /usr/share/cargo/registry/bencher-0.1.5/lib.rs:511:38
  29s   12: bencher::run_tests_console
  29s              at /usr/share/cargo/registry/bencher-0.1.5/lib.rs:444:10
  29s   13: bench::main
  29s              at 
/usr/share/cargo/registry/bencher-0.1.5/macros.rs:49:13
  29s   14: core::ops::function::FnOnce::call_once
  29s              at 
/usr/src/rustc-1.85.0/library/core/src/ops/function.rs:250:5
  29s note: Some details are omitted, run with `RUST_BACKTRACE=full` for 
a verbose backtrace.
  29s error: test failed, to rerun pass `--bench bench`
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