plugins.cracklib_password_check and plugins.two_password_validations fail in buildbot on p8-trusty-bintar[-debug]

plugins.two_password_validations         w1 [ fail ]

        Test ended at 2015-07-17 21:51:47

CURRENT_TEST: plugins.two_password_validations

mysqltest: At line 19: query 'install soname "cracklib_password_check"' failed: 1126: Can't open shared library '/var/lib/buildbot/maria-slave/power8-vlp04-bintar-debug/build/mysql-test/var/1/plugins/cracklib_password_check.so' (errno: 0, libcrack.so.2: cannot open shared object file: No such file or directory)

The result from queries just before the failure was:

install soname "simple_password_check";

grant select on *.* to Fff_fff1 identified by '1fff_ffF';

drop user Fff_fff1;

install soname "cracklib_password_check";

 - saving '/var/lib/buildbot/maria-slave/power8-vlp04-bintar-debug/build/mysql-test/var/1/log/plugins.two_password_validations/' to '/var/lib/buildbot/maria-slave/power8-vlp04-bintar-debug/build/mysql-test/var/log/plugins.two_password_validations/'