This message in your logs indicates that your system is improperly
configured:
WARN: uid is 0 but '/' is owned by 1000
I suggest heading to #ubuntu on irc.freenode.net or
https://askubuntu.com to ask for help from someone. If you go to
askubuntu, be sure to paste in the output of ls -l / .
** Tags removed: need-duplicate-check
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1816016
Title:
package openssh-server 1:7.2p2-4ubuntu2.7 failed to install/upgrade:
subprocess installed