[Pkg-rust-maintainers] Bug#1025341: rust-lalrpop: flaky autopkgtest on s390x

[Aurelien Jarno]

Source: rust-lalrpop
Version: 0.19.8-3
Severity: serious
User: debian-ci at lists.debian.org
Usertags: flaky

Dear maintainer(s),

I looked at the results of the autopkgtest of rust-lalrpop as it was
blocking glibc. I noticed that it sometimes fails on s390x with the
following error:

thread 'lr1::build::test::expr_grammar1' has overflowed its stack
fatal runtime error: stack overflow
error: test failed, to rerun pass '--lib'

Caused by:
  process didn't exit successfully: `/tmp/tmp.ylFj0b7NXt/target/s390x-unknown-linux-gnu/debug/deps/lalrpop-d02d6930d272c3cf` (signal: 6, SIGABRT: process abort signal)
autopkgtest [23:12:06]: test librust-lalrpop-dev:lexer: -----------------------]
autopkgtest [23:12:06]: test librust-lalrpop-dev:lexer:  - - - - - - - - - - results - - - - - - - - - -
librust-lalrpop-dev:lexer FAIL non-zero exit status 101

See the logs of failed and successful runs:
https://ci.debian.net/data/autopkgtest/testing/s390x/r/rust-lalrpop/28902703/log.gz
https://ci.debian.net/data/autopkgtest/testing/s390x/r/rust-lalrpop/28902705/log.gz

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.

Regards
Aurelien