* ERROR: mail-client/thunderbird-52.6.0-r1::net-kit failed (depend phase):
 *   mozcoreconf-v5.eclass could not be found by inherit()
 * 
 * Call stack:
 *                      ebuild.sh, line 617:  Called source '/var/git/meta-repo/kits/net-kit/mail-client/thunderbird/thunderbird-52.6.0-r1.ebuild'
 *   thunderbird-52.6.0-r1.ebuild, line  33:  Called inherit 'flag-o-matic' 'toolchain-funcs' 'mozconfig-v6.52' 'autotools' 'pax-utils' 'check-reqs' 'nsplugins' 'mozlinguas-v2' 'xdg-utils' 'gnome2-utils'
 *                      ebuild.sh, line 313:  Called __qa_source '/var/git/meta-repo/kits/net-kit/eclass/mozconfig-v6.52.eclass'
 *                      ebuild.sh, line 108:  Called source '/var/git/meta-repo/kits/net-kit/eclass/mozconfig-v6.52.eclass'
 *         mozconfig-v6.52.eclass, line  29:  Called inherit 'flag-o-matic' 'toolchain-funcs' 'mozcoreconf-v5'
 *                      ebuild.sh, line 290:  Called die
 * The specific snippet of code:
 *   		[[ -z ${location} ]] && die "${1}.eclass could not be found by inherit()"