Comment 3 for bug 1544942

Another example:

Option --dry-run given, *not* performing real actions
Packages that will be upgraded:
marking linux-image-extra-3.13.0-57-generic for remove
marking linux-image-3.13.0-57-generic for remove
marking linux-headers-3.13.0-57-generic for remove
marking linux-headers-3.13.0-57 for remove
Packages that are auto removed: 'linux-headers-3.13.0-57 linux-headers-3.13.0-57-generic linux-image-3.13.0-57-generic linux-image-extra-3.13.0-57-generic'
/usr/bin/dpkg --status-fd 9 --force-depends --force-remove-essential --remove linux-headers-3.13.0-57-generic:amd64 linux-headers-3.13.0-57:all linux-image-extra-3.13.0-57-generic:amd64 linux-image-3.13.0-57-generic:amd64
/usr/bin/dpkg --status-fd 11 --configure --pending
Packages were successfully auto-removed
InstCount=0 DelCount=4 BrokenCount=0