Gitlab-CI: mysql-test-run fails on main.bad_startup_options

After syncing latest 10.6 branch head to https://salsa.debian.org/otto/mariadb-server/-/commits/10.6 I noticed that the .gitlab-ci.yml based CI job mysq-test-run failed on:

main.bad_startup_options                 w2 [ fail ]

        Test ended at 2022-11-11 20:50:46

CURRENT_TEST: main.bad_startup_options

2022-11-11 20:50:42 0 [Note] /usr/sbin/mariadbd (server 10.6.12-MariaDB-log) starting as process 11336 ...

/usr/sbin/mariadbd: Please consult the Knowledge Base to find out how to run mysqld as root!

2022-11-11 20:50:42 0 [ERROR] Aborting

Can't open file /usr/share/mysql-test/var/tmp/2/errorlog.err: No such file or directory at /usr/share/mysql-test/var/2/tmpoEpwpn line 8.

mysqltest: In included file "./include/search_pattern_in_file.inc": 

included from /usr/share/mysql-test/main/bad_startup_options.test at line 17:

At line 54: command "perl" failed with error: 2  my_errno: 175  errno: 175

 - saving '/usr/share/mysql-test/var/2/log/main.bad_startup_options/' to '/usr/share/mysql-test/var/log/main.bad_startup_options/'

This is a new test added in October 2022 in https://github.com/MariaDB/server/commit/32158be720b85a3ae0e0eeebe1277c36f86dca38 and all stable branches.

It seems to fail when it runs --exec $MYSQLD --defaults-group-suffix=.1 --defaults-file=$MYSQLTEST_VARDIR/my.cnf --ssl-cert=bad --log-error=$errorlog if I read the log correctly.

There are many tests that run some variation of --exec $MYSQLD or --exec $MYSQLD_CMD or --exec $MYSQLD_BOOTSTRAP_CMD, closest one is in wsrep-recover-step.inc. Perhaps there is just something minor wrong with the parameters, so the command does not run correctly in all circumstances?

Anyway, issue is easy to reproduce (visible in CI) and probably newcomer friendly to fix.

I am aware that MariaDB Foundation does not have resources to maintain Gitlab-CI. Instead of closing this bug report as a won't fix, please keep it open and wait for external contributions in case some of the Gitlab-CI users (Debian, Fedora etc)