Version 5.0.0 is available upstream. Please consider updating!
It seems that version 5.0.0 is available upstream, while the latest version in the Gentoo tree is 4.0.12. You think this warning is false? Read more about it here.
LXCFS is a simple userspace filesystem designed to
provide a cgroupfs-like tree which is container aware
and a set of files which can be bind-mounted over
their /proc originals to provide cgroup-aware values.