bugfix: fixed a regression in Job._run()
bugfix: fixed a regression in Job._run()

pombredanne/disco,pavlobaron/disco_playground,scrapinghub/disco,ErikDubbelboer/disco,oldmantaiter/disco,beni55/disco,beni55/disco,oldmantaiter/disco,seabirdzh/disco,pavlobaron/disco_playground,discoproject/disco,scrapinghub/disco,discoproject/disco,pavlobaron/disco_playground,pavlobaron/disco_playground,pombredanne/disco,simudream/disco,pombredanne/disco,mozilla/disco,seabirdzh/disco,ktkt2009/disco,pooya/disco,oldmantaiter/disco,ktkt2009/disco,seabirdzh/disco,seabirdzh/disco,scrapinghub/disco,beni55/disco,discoproject/disco,pombredanne/disco,discoproject/disco,scrapinghub/disco,pooya/disco,simudream/disco,mwilliams3/disco,pombredanne/disco,mwilliams3/disco,simudream/disco,beni55/disco,simudream/disco,ErikDubbelboer/disco,simudream/disco,ktkt2009/disco,mwilliams3/disco,pooya/disco,mwilliams3/disco,beni55/disco,discoproject/disco,oldmantaiter/disco,ErikDubbelboer/disco,mozilla/disco,mozilla/disco,oldmantaiter/disco,mozilla/disco,ErikDubbelboer/disco,seabirdzh/disco,mwilliams3/disco,ErikDubbelboer/disco,ktkt2009/disco,ktkt2009/disco,pooya/disco