Version 4.9.3 is available upstream. Please consider updating! It seems that version 4.9.3 is available upstream, while the latest version in the Gentoo tree is 4.9.2. You think this warning is false? Read more about it here.
GRAPE is a package for computing with graphs and groups, and is
primarily designed for constructing and analysing graphs related to
groups, finite geometries, and designs.