upgrade errors

[MACscr]

Just forced an scrollout upgrade on my debian 8.2 systems and noticed a few errors towards the end that stood out a bit more than others:

Reading package lists... Done
Building dependency tree
Reading state information... Done
Package unrar is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'unrar' has no installation candidate
Reading package lists... Done
Building dependency tree
Reading state information... Done
unzip is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
Reading package lists... Done
Building dependency tree
Reading state information... Done
xzdec is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
Reading package lists... Done
Building dependency tree
Reading state information... Done
zip is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
Reading package lists... Done
Building dependency tree
Reading state information... Done
zoo is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
[ ok ] Stopping postfix (via systemctl): postfix.service.
[ ok ] Starting postfix (via systemctl): postfix.service.
Considering dependency authz_core for authz_groupfile:
Module authz_core already enabled
Module authz_groupfile already enabled
Module php5 already enabled
Considering dependency setenvif for ssl:
Module setenvif already enabled
Considering dependency mime for ssl:
Module mime already enabled
Considering dependency socache_shmcb for ssl:
Module socache_shmcb already enabled
Module ssl already enabled
Module rewrite already enabled
Module headers already enabled
Module proxy already enabled
Considering dependency proxy for proxy_ajp:
Module proxy already enabled
Module proxy_ajp already enabled
Considering dependency proxy for proxy_balancer:
Module proxy already enabled
Considering dependency alias for proxy_balancer:
Module alias already enabled
Considering dependency slotmem_shm for proxy_balancer:
Module slotmem_shm already enabled
Module proxy_balancer already enabled
Considering dependency proxy for proxy_connect:
Module proxy already enabled
Module proxy_connect already enabled
Considering dependency proxy for proxy_ftp:
Module proxy already enabled
Module proxy_ftp already enabled
Considering dependency proxy for proxy_http:
Module proxy already enabled
Module proxy_http already enabled
Considering dependency proxy for proxy_scgi:
Module proxy already enabled
Module proxy_scgi already enabled
Module cache already enabled
ERROR: Module disk_cache does not exist!
ERROR: Module mem_cache does not exist!
Module filter already enabled
Module substitute already enabled
Site scrollout already enabled
Site scrollout-ssl already enabled
Enabling conf web_cache.
To activate the new configuration, you need to run:
  service apache2 reload
cp: cannot create regular file ‘/etc/racoon/’: Not a directory
[ ok ] Restarting amavis (via systemctl): amavis.service.
/var/www/bin/scrollout.sh: line 1402: /etc/racoon/psk.txt: No such file or directory
Update done.
root@mx1:/etc/cron.hourly#

[Anonymous]

racoon is now removed and will be replaced by strongswan.
This has no impact on the application.

The other errors are related to modules on Debian 7 running the previous Apache and they have no effect on Debian 8 running the recent Apache.

All those will be adjusted in time.

[MACscr]

Why is a vpn service (racoon/strongswan) even needed? I sure dont need one. Same goes with quagga.