Packages with unowned files in /etc/alternatives after purge (violating policy 6.8) see
https://www.debian.org/doc/debian-policy/ch-maintainerscripts.html#details-of-removal-and-or-configuration-purging
Alternatives are usually registered with update-alternatives in postinst configure and need to be unregistered again in prerm remove.
The commandline to find these logs is:
COMMAND='grep -E "/etc/alternatives/.*not owned"'
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