Preparing to unpack .../archives/netbase_5.4_all.deb ...
Unpacking netbase (5.4) over (5.3) ...
Preparing to unpack .../ifupdown_0.8.17ubuntu1.1_amd64.deb ...
Unpacking ifupdown (0.8.17ubuntu1.1) over (0.8.10ubuntu1.4) ...
Preparing to unpack .../systemd_237-3ubuntu10_amd64.deb ...
Unpacking systemd (237-3ubuntu10) over (229-4ubuntu21.2) ...
Processing triggers for ureadahead (0.100.0-19) ...
Setting up util-linux (2.31.1-0.4ubuntu3.1) ...
update-alternatives: warning: alternative /usr/bin/pg (part of link group pager) doesn't exist; removing from list of alternatives
Removing obsolete conffile /etc/init/hwclock-save.conf ...
Removing obsolete conffile /etc/init/hwclock.conf ...
Removing obsolete conffile /etc/init/hwclock.sh.conf ...
Removing obsolete conffile /etc/cron.weekly/fstrim ...
Created symlink /etc/systemd/system/timers.target.wants/fstrim.timer → /lib/systemd/system/fstrim.timer.
Setting up mount (2.31.1-0.4ubuntu3.1) ...
Setting up systemd (237-3ubuntu10) ...
Installing new version of config file /etc/pam.d/systemd-user ...
Installing new version of config file /etc/systemd/journald.conf ...
Installing new version of config file /etc/systemd/logind.conf ...
Installing new version of config file /etc/systemd/resolved.conf ...
Installing new version of config file /etc/systemd/system.conf ...
Installing new version of config file /etc/systemd/timesyncd.conf ...
Installing new version of config file /etc/systemd/user.conf ...
Created symlink /etc/systemd/system/dbus-org.freedesktop.resolve1.service → /lib/systemd/system/systemd-resolved.service.
Created symlink /etc/systemd/system/multi-user.target.wants/systemd-resolved.service → /lib/systemd/system/systemd-resolved.service.
Synchronizing state of ondemand.service with SysV service script with /lib/systemd/systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install enable ondemand
Segmentation fault (core dumped)