The sys-freebsd/freebsd-sbin rdepends on sys-process/vixie-cron and not the more general virtual/cron. This lead to the impossibility of using any other cron daemon than vixie-cron, because portage will start complaining about conflicting deps. Reproducible: Always Steps to Reproduce:
It is intended, because adjkerntz task uses the cron.d directory (not cron.daily or similar), and that is only available on vixie-cron.