Comment 5 for bug 1533839

lv2 login: systemd-journald.service: Got notification message from PID 318 (WATCHDOG=1)
Accepted new private connection.
Got message type=method_call sender=n/a destination=org.freedesktop.systemd1 object=/org/freedesktop/systemd1 interface=org.freedesktop.systemd1.Manager member=StopUnit cookie=1 reply_cookie=0 error=n/a
libvirt-guests.service: Trying to enqueue job libvirt-guests.service/stop/replace
libvirt-guests.service: Installed new job libvirt-guests.service/stop as 343
libvirt-guests.service: Enqueued job libvirt-guests.service/stop as 343
Sent message type=method_return sender=n/a destination=n/a object=n/a interface=n/a member=n/a cookie=1 reply_cookie=1 error=n/a
Sent message type=signal sender=n/a destination=n/a object=/org/freedesktop/systemd1 interface=org.freedesktop.systemd1.Manager member=JobNew cookie=2 reply_cookie=0 error=n/a
Sent message type=signal sender=n/a destination=n/a object=/org/freedesktop/systemd1 interface=org.freedesktop.systemd1.Manager member=JobNew cookie=249 reply_cookie=0 error=n/a
Got message type=method_call sender=n/a destination=org.freedesktop.systemd1 object=/org/freedesktop/systemd1 interface=org.freedesktop.systemd1.Manager member=GetUnit cookie=2 reply_cookie=0 error=n/a
Sent message type=method_return sender=n/a destination=n/a object=n/a interface=n/a member=n/a cookie=3 reply_cookie=2 error=n/a
libvirt-guests.service: About to execute: /usr/lib/libvirt/libvirt-stop-guests
libvirt-guests.service: Forked /usr/lib/libvirt/libvirt-stop-guests as 1264
libvirt-guests.service: Changed exited -> stop[ 88.071982] libvirt-stop-guests[1264]: libvirt-guests.service: Executing: /usr/lib/libvirt/libvirt-stop-guests

Sent message type=signal sender=n/a destination=n/a object=/org/freedesktop/systemd1/unit/libvirt_2dguests_2eservice interface=org.freedesktop.DBus.Properties member=PropertiesChanged cookie=4 reply_cookie=0 error=n/a
Sent message type=signal sender=n/a destination=n/a object=/org/freedesktop/systemd1/unit/libvirt_2dguests_2eservice interface=org.freedesktop.DBus.Properties member=PropertiesChanged cookie=5 reply_cookie=0 error=n/a
Sent message type=signal sender=n/a destination=n/a object=/org/freedesktop/systemd1/unit/libvirt_2dguests_2eservice interface=org.freedesktop.DBus.Properties member=PropertiesChanged cookie=250 reply_cookie=0 error=n/a
Sent message type=signal sender=n/a destination=n/a object=/org/freedesktop/systemd1/unit/libvirt_2dguests_2eservice interface=org.freedesktop.DBus.Properties member=PropertiesChanged cookie=251 reply_cookie=0 error=n/a
Sent message type=signal sender=n/a destination=n/a object=/org/freedesktop/systemd1/job/343 interface=org.freedesktop.DBus.Properties member=PropertiesChanged cookie=6 reply_cookie=0 error=n/a
Sent message type=signal sender=n/a destination=n/a object=/org/freedesktop/systemd1/job/343 interface=org.freedesktop.DBus.Properties member=PropertiesChanged cookie=252 reply_cookie=0 error=n/a
systemd-logind.service: Got notification message from PID 721 (WATCHDOG=1)
Got message type=method_call sender=n/a destination=org.freedesktop.systemd1 object=/org/freedesktop/systemd1/unit/libvirt_2dguests_2eservice interface=org.freedesktop.DBus.Properties member=Get cookie=3 reply_cookie=0 error=n/a
Sent message type=method_return sender=n/a destination=n/a object=n/a interface=n/a member=n/a cookie=7 reply_cookie=3 error=n/a
systemd-timesyncd.service: Got notification message from PID 457 (WATCHDOG=1)

but debian/rules installs libvirt-guests as --no-restart-on-upgrade.