{'description': {'en': "Universebenzene's personal Gentoo overlay"},
 'feed': ['https://github.com/Universebenzene/benzene-overlay/commits/master.atom'],
 'homepage': 'https://github.com/Universebenzene/benzene-overlay',
 'name': 'benzene-overlay',
 'owner': [{'email': 'universebenzene@sina.com',
            'name': 'Universebenzene',
            'type': 'person'}],
 'quality': 'experimental',
 'source': [{'type': 'git',
             'uri': 'https://github.com/Universebenzene/benzene-overlay.git'},
            {'type': 'git',
             'uri': 'git+ssh://git@github.com/Universebenzene/benzene-overlay.git'}],
 'status': 'unofficial'}
pkgcore 0.12.16

$ pmaint --config /var/lib/repo-mirror-ci/data-sync/etc/portage sync benzene-overlay
ERROR:pkgcore:Cannot write cache for /var/cache/pkgcore/plugincache: [Errno 13] Permission denied: '/var/cache/pkgcore/.update.plugincache'. Try running pplugincache.
*** syncing benzene-overlay
Already up to date.
*** synced benzene-overlay
 * Sync succeeded
$ git log --format=%ci -1
$ git show -q --pretty=format:%G? HEAD
$ pmaint --config /var/lib/repo-mirror-ci/data/etc/portage regen --use-local-desc --pkg-desc-index -t 32 benzene-overlay
ERROR:pkgcore:Cannot write cache for /var/cache/pkgcore/plugincache: [Errno 13] Permission denied: '/var/cache/pkgcore/.update.plugincache'. Try running pplugincache.
 * Cache regenerated successfully