Bug#1027420: dpkg: warning: unable to delete old directory '/var/lib/polkit-1': Directory not empty

[Dan Jacobson]

Package: systemd

Unpacking systemd (252.4-1) over (251.1-1) ...
dpkg: warning: unable to delete old directory '/var/lib/polkit-1': Directory not empty

# ld -Ral /var/lib/polkit-1
/var/lib/polkit-1:
total 12
drwx------  3 root    root    4096 12-31 16:05 .
drwxr-xr-x 45 root    root    4096 12-31 16:11 ..
drwx------  2 polkitd nogroup 4096 2016-12-21  .cache

/var/lib/polkit-1/.cache:
total 8
drwx------ 2 polkitd nogroup 4096 2016-12-21  .
drwx------ 3 root    root    4096 12-31 16:05 ..