@17_users/unsafe/add_user_locked_with_password.cf@ (and many others) fail on Ubuntu because @chpasswd@ doesn't support the expected options. Output during the test:
/usr/sbin/chpasswd: invalid option – 'e'
Usage: chpasswd [options]
-h, --help display this help message and exit
-S, --stdout report encrypted passwords to stdout
instead of changing the passwd file