Errors were encountered while processing:
 procps
 udev
 systemd
 libpam-systemd:amd64
 cups-browsed
 cups-daemon
 lightdm
 ntp
 virtualbox
 virtualbox-qt
 virtualbox-dkms
 rsyslog
 cgmanager
 apport
 apport-gtk
 cups-core-drivers
 cups
 gdm
 policykit-1
 spamassassin
 sa-compile
 unattended-upgrades
 xserver-xorg-core
E: Sub-process /usr/bin/dpkg returned an error code (1)