Comment 2 for bug 1573395

From apttermlog:

Removing obsolete conffile /etc/init.d/squid3 ...^M
Removing obsolete conffile /etc/init/squid3.conf ...^M
dpkg: dependency problems prevent processing triggers for ufw:^M
 ufw depends on ucf; however:^M
  Package ucf is not configured yet.^M
 ufw depends on python3; however:^M
  Package python3 is not configured yet.^M
 ufw depends on python3:any (>= 3.3.2-2~); however:^M
  Package python3 is not configured yet.^M
^M
dpkg: error processing archive /var/cache/apt/archives/squid3_3.5.12-1ubuntu7_all.deb (--unpack):^M
 dependency problems - leaving triggers unprocessed^M
Errors were encountered while processing:^M
 /var/cache/apt/archives/squid3_3.5.12-1ubuntu7_all.deb^M