For runs that are intended to simply exercise the compilation and not be published there's no point in publishing the artifacts to the NAS. An option to not publish would save disk space and time for these runs.
http://git.yoctoproject.org/cgit/cgit.cgi/yocto-autobuilder/commit/?id=ab0b9dd35d31a59918408558c62d35dd3e649d83
Verified on 3ea93eabdfdbbc7f8dccbef5c8b4451c8f1229fb