Version 1.9.16 is available upstream. Please consider updating! It seems that version 1.9.16 is available upstream, while the latest version in the Gentoo tree is 9999. You think this warning is false? Read more about it here.
Sudo (superuser do) allows a system administrator to give certain
users (or groups of users) the ability to run some (or all)
commands as root or another user while logging the commands and
arguments.