My apologies in advance if this isn't directly related but I came across this bug while diagnosing something very similar in Ubuntu https://bugs.launchpad.net/ubuntu/+source/procps/+bug/447197
It seems that procps start and restart can fail in Ubuntu. When done in a maintainer script this results in an exit status of 1 and breaks the package install. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org