Debug and fix warnings while installing .deb file

[Agent-Hellboy]

➜  Downloads sudo dpkg -i rsteye\(2\).deb 
[sudo] password for proshan: 
(Reading database ... 208948 files and directories currently installed.)
Preparing to unpack rsteye(2).deb ...
Unpacking rsteye (1.0.9) over (1.0.9) ...
dpkg: warning: unable to delete old directory '/usr/local/bin': Directory not empty
dpkg: warning: unable to delete old directory '/usr/local': Directory not empty
Setting up rsteye (1.0.9) ...
Removed /etc/systemd/system/multi-user.target.wants/rsteye.service.
Created symlink /etc/systemd/system/multi-user.target.wants/rsteye.service → /lib/systemd/system/rsteye.service.