Hello,
You have been trapped by bug #843160 when you see messages like
systemd[1]: Failed to start udev Kernel Device Manager
please chroot into your system and upgrade to systemd 232-2
(https://bugs.debian.org/843160)
greetings
musca
P.S.: This report is dedicated to our good friend jokrebel.
Thanks to your report, the problem was avoided here. Vielen Dank!