/etc/crontab contains the following comment: # fcron: # This is NOT the system crontab! fcron does not support a system crontab. # to get /etc/cron.{hourly|daily|weekly|montly} working with fcron run # crontab /etc/crontab # as root. # NOTE: This will REPLACE root's current crontab!! This is not true, fcron does support a system crontab which is built with: /usr/libexec/check_system_crontabs -f -s 0 The command mentioned in the above comment will not only overwrite the root crontab but also cause the system crontabs to run twice. Reproducible: Always
Thanks for the report! This is now fixed: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=531e27c45e1f413da44d8a51ece0f59e454586fb