Set DISTUTILS_NO_PARALLEL_BUILD=1 in eclass/ubuntu-versionator.eclass to catch all those problematic packages that will not parallel build using distutils-r1.eclass. Remove '+music' USE from unity-lenses/unity-lens-meta until upstream get unity-lens-music working again, and remove unity-lens-music from unity-lenses/unity-lens-video deps. as it's not needed