Changes proposed to mediawiki/extensions/Wikibase triggers four Zend jobs and their HHVM based counterparts.
On mediawiki/core we no more trigger the Zend jobs when a patch is proposed. They are only run on CR+2 (gate-and-submit). It is still possible to trigger the Zend jobs though by commenting check zend on an open patchset. See https://gerrit.wikimedia.org/r/#/c/197951/
I would like to do the same for Wikibase to save processing time. On patch proposal only the hhvm one will run and on CR+2 the Zend ones would be added as well.
That needs some communication to Wikibase devs :-)