Preparing to unpack .../squid-common_3.5.12-1ubuntu7.3_all.deb ...
Unpacking squid-common (3.5.12-1ubuntu7.3) ...
Selecting previously unselected package squid.
dpkg: considering deconfiguration of squid3, which would be broken by installation of squid ...
dpkg: yes, will deconfigure squid3 (broken by squid)
Preparing to unpack .../squid_3.5.12-1ubuntu7.3_i386.deb ...
De-configuring squid3 (3.3.8-1ubuntu6.9) ...
squid3 stop/waiting
Unpacking squid (3.5.12-1ubuntu7.3) ...
Replacing files in old package squid3 (3.3.8-1ubuntu6.9) ...
Processing triggers for systemd (229-4ubuntu16) ...
Setting up libecap3:i386 (1.0.1-3ubuntu3) ...
Setting up libkrb5support0:i386 (1.13.2+dfsg-5ubuntu2) ...
Setting up libk5crypto3:i386 (1.13.2+dfsg-5ubuntu2) ...
Setting up libkeyutils1:i386 (1.5.9-8ubuntu1) ...
Setting up libkrb5-3:i386 (1.13.2+dfsg-5ubuntu2) ...
Setting up libgssapi-krb5-2:i386 (1.13.2+dfsg-5ubuntu2) ...
Setting up libgmp10:i386 (2:6.1.0+dfsg-2) ...
Setting up libnettle6:i386 (3.2-1ubuntu0.16.04.1) ...
Setting up libhogweed4:i386 (3.2-1ubuntu0.16.04.1) ...
Setting up libidn11:i386 (1.32-3ubuntu1.1) ...
Setting up libffi6:i386 (3.2.1-4) ...
Setting up libp11-kit0:i386 (0.23.2-5~ubuntu16.04.1) ...
Setting up libtasn1-6:i386 (4.7-3ubuntu0.16.04.1) ...
Setting up libgnutls30:i386 (3.4.10-4ubuntu1.2) ...
Setting up libroken18-heimdal:i386 (1.7~git20150920+dfsg-4ubuntu1) ...
Setting up libasn1-8-heimdal:i386 (1.7~git20150920+dfsg-4ubuntu1) ...
Setting up libhcrypto4-heimdal:i386 (1.7~git20150920+dfsg-4ubuntu1) ...
Setting up libheimbase1-heimdal:i386 (1.7~git20150920+dfsg-4ubuntu1) ...
Setting up libwind0-heimdal:i386 (1.7~git20150920+dfsg-4ubuntu1) ...
Setting up libhx509-5-heimdal:i386 (1.7~git20150920+dfsg-4ubuntu1) ...
Setting up libsqlite3-0:i386 (3.11.0-1ubuntu1) ...
Setting up libkrb5-26-heimdal:i386 (1.7~git20150920+dfsg-4ubuntu1) ...
Setting up libheimntlm0-heimdal:i386 (1.7~git20150920+dfsg-4ubuntu1) ...
Setting up libgssapi3-heimdal:i386 (1.7~git20150920+dfsg-4ubuntu1) ...
Setting up libsasl2-modules-db:i386 (2.1.26.dfsg1-14build1) ...
Setting up libsasl2-2:i386 (2.1.26.dfsg1-14build1) ...
Setting up libldap-2.4-2:i386 (2.4.42+dfsg-2ubuntu3.1) ...
Setting up libltdl7:i386 (2.4.6-0.1) ...
Setting up libicu55:i386 (55.1-7) ...
Setting up libxml2:i386 (2.9.3+dfsg1-1ubuntu0.1) ...
Setting up netbase (5.3) ...
Installing new version of config file /etc/services ...
Setting up squid-langpack (20150704-1) ...
Setting up squid-common (3.5.12-1ubuntu7.3) ...
Setting up squid (3.5.12-1ubuntu7.3) ...
Removing obsolete conffile /etc/squid3/msntauth.conf ...
Preserving user changes to /etc/squid/squid.conf (renamed from /etc/squid3/squid.conf)...
stat: cannot stat '/var/spool/squid3': No such file or directory
chown: cannot access '/var/spool/squid3': No such file or directory
dpkg: error processing package squid (--configure):
 subprocess installed post-installation script returned error exit status 1