The postgres users as defined in Hibernate ORM's matrix configuration are now setup on each slave for ci.hibernate.org. - https://github.com/hibernate/hibernate-orm/blob/master/databases/pgsql/re... They have SUPERUSER privileges, so they can create/drop new databases and do anything else these might need. For restricted usage - like any testsuite which doesn't need such privileges - we're keeping the previously defined users too. https://github.com/hibernate/ci.hibernate.org/commit/2a4926bbd4dabf1767bf... Sanne