Hello, i can confirm this when upgrading from cron 3.0pl1-127 to 3.0pl1-127+deb8u1:
Setting up cron (3.0pl1-127+deb8u1) ... update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults I think this is triggered by the postinst script (in my case package cron_3.0pl1-127+deb8u1_amd64.deb on line 85) using update-rc.d start: # Automatically added by dh_installinit if [ -x "/etc/init.d/cron" ]; then update-rc.d cron start 89 2 3 4 5 . >/dev/null invoke-rc.d cron start || exit $? fi which is deprecated if i got it correct: https://lists.debian.org/debian-devel/2013/05/msg01109.html