Code review comment for ~enr0n/ubuntu/+source/cron:merge-mantic

I've also triggered the britney autopkgtests against the cron package in the PPA. Will followup with test results if they complete soonish, otherwise can retrieve them via ppa-dev-tools:

$ ppa tests ppa:enr0n/proposed-migration -p cron
* Triggers:
  - Source cron/3.0pl1-162ubuntu1~ppa2: Published
    + Trigger basic @amd64♻️ Trigger all-proposed @amd64💍
    + Trigger basic @arm64♻️ Trigger all-proposed @arm64💍
    + Trigger basic @armhf♻️ Trigger all-proposed @armhf💍
    + Trigger basic @i386♻️ Trigger all-proposed @i386💍
    + Trigger basic @ppc64el♻️ Trigger all-proposed @ppc64el💍
    + Trigger basic @s390x♻️ Trigger all-proposed @s390x💍
* Running:
  # time pkg release arch ppa trigger
  - 160 cron mantic amd64 enr0n/proposed-migration cron/3.0pl1-162ubuntu1~ppa2
  - 160 cron mantic i386 enr0n/proposed-migration cron/3.0pl1-162ubuntu1~ppa2
  - 160 cron mantic s390x enr0n/proposed-migration cron/3.0pl1-162ubuntu1~ppa2
  - 160 cron mantic armhf enr0n/proposed-migration cron/3.0pl1-162ubuntu1~ppa2
  - 160 cron mantic arm64 enr0n/proposed-migration cron/3.0pl1-162ubuntu1~ppa2
  - 160 cron mantic ppc64el enr0n/proposed-migration cron/3.0pl1-162ubuntu1~ppa2