I'm not sure what it means, but while updating Portage complained: QA Notice: sed in global scope: media-libs/libdvdcss-0.0.3.3 Reproducible: Always Steps to Reproduce: 1. 2. 3.
Media-video people take a look at /usr/portage/eclass/versionator.eclass for hints on removing sed here.
replaced sed with bash builtin functions. fixed.