fix failure when ingesting jobs without revision
fix failure when ingesting jobs without revision

kapy2010/treeherder,KWierso/treeherder,rail/treeherder,tojonmz/treeherder,parkouss/treeherder,sylvestre/treeherder,moijes12/treeherder,tojonmz/treeherder,gbrmachado/treeherder,sylvestre/treeherder,vaishalitekale/treeherder,tojonmz/treeherder,vaishalitekale/treeherder,sylvestre/treeherder,adusca/treeherder,avih/treeherder,tojon/treeherder,glenn124f/treeherder,KWierso/treeherder,gbrmachado/treeherder,parkouss/treeherder,jgraham/treeherder,avih/treeherder,moijes12/treeherder,glenn124f/treeherder,adusca/treeherder,vaishalitekale/treeherder,jgraham/treeherder,wlach/treeherder,moijes12/treeherder,deathping1994/treeherder,vaishalitekale/treeherder,avih/treeherder,sylvestre/treeherder,deathping1994/treeherder,kapy2010/treeherder,deathping1994/treeherder,kapy2010/treeherder,adusca/treeherder,kapy2010/treeherder,kapy2010/treeherder,tojonmz/treeherder,akhileshpillai/treeherder,edmorley/treeherder,glenn124f/treeherder,wlach/treeherder,avih/treeherder,gbrmachado/treeherder,akhileshpillai/treeherder,glenn124f/treeherder,gbrmachado/treeherder,edmorley/treeherder,akhileshpillai/treeherder,jgraham/treeherder,adusca/treeherder,parkouss/treeherder,avih/treeherder,vaishalitekale/treeherder,jgraham/treeherder,deathping1994/treeherder,moijes12/treeherder,moijes12/treeherder,deathping1994/treeherder,akhileshpillai/treeherder,adusca/treeherder,vaishalitekale/treeherder,jgraham/treeherder,tojonmz/treeherder,wlach/treeherder,rail/treeherder,glenn124f/treeherder,edmorley/treeherder,wlach/treeherder,wlach/treeherder,KWierso/treeherder,moijes12/treeherder,tojon/treeherder,tojon/treeherder,parkouss/treeherder,sylvestre/treeherder,rail/treeherder,glenn124f/treeherder,gbrmachado/treeherder,akhileshpillai/treeherder,rail/treeherder,tojonmz/treeherder,wlach/treeherder,rail/treeherder,deathping1994/treeherder,rail/treeherder,adusca/treeherder,sylvestre/treeherder,parkouss/treeherder,parkouss/treeherder,KWierso/treeherder,edmorley/treeherder,tojon/treeherder,jgraham/treeherder,avih/treeherder,gbrmachado/treeherder,akhileshpillai/treeherder