[Pkg-rust-maintainers] Bug#1078430: rust-just: flaky autopkgtest on s390x: *nearly* always fails

[Paul Gevers]

Source: rust-just
Version: 1.33.0-1
Severity: serious
User: debian-ci at lists.debian.org
Usertags: flaky

Dear maintainer(s),

I looked at the results of the autopkgtest of your package because it 
was blocking the migration of gcc-14. I noticed that it nearly always 
fails on s390x, but not always. It's a bit flaky on other architectures 
as well.

Because the unstable-to-testing migration software now blocks on
regressions in testing, flaky tests, i.e. tests that flip between
passing and failing without changes to the list of installed packages,
are causing people unrelated to your package to spend time on these
tests.

Don't hesitate to reach out if you need help and some more information
from our infrastructure.

Paul

https://ci.debian.net/packages/r/rust-just/testing/s390x/50327770/

149s failures:
149s
149s ---- choose::status_error stdout ----
149s thread 'choose::status_error' panicked at tests/choose.rs:209:3:
149s assertion failed: Regex::new("^error: Chooser `exit-2` failed: exit 
(code|status): 
2\n$").unwrap().is_match(str::from_utf8(&output.stderr).unwrap())
149s stack backtrace:
149s    0: rust_begin_unwind
149s              at 
/usr/src/rustc-1.79.0/library/std/src/panicking.rs:652:5
149s    1: core::panicking::panic_fmt
149s              at 
/usr/src/rustc-1.79.0/library/core/src/panicking.rs:72:14
149s    2: core::panicking::panic
149s              at 
/usr/src/rustc-1.79.0/library/core/src/panicking.rs:146:5
149s    3: integration::choose::status_error
149s              at ./tests/choose.rs:209:3
149s    4: integration::choose::status_error::{{closure}}
149s              at ./tests/choose.rs:181:18
149s    5: core::ops::function::FnOnce::call_once
149s              at 
/usr/src/rustc-1.79.0/library/core/src/ops/function.rs:250:5
149s    6: core::ops::function::FnOnce::call_once
149s              at 
/usr/src/rustc-1.79.0/library/core/src/ops/function.rs:250:5
149s note: Some details are omitted, run with `RUST_BACKTRACE=full` for 
a verbose backtrace.
149s
149s
149s failures:
149s     choose::status_error
149s
149s test result: FAILED. 792 passed; 1 failed; 7 ignored; 0 measured; 0 
filtered out; finished in 3.13s
149s
149s error: test failed, to rerun pass `--test integration`
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