Failing commands in 'fab shell' should not kill the session.
Failing commands in 'fab shell' should not kill the session.

TarasRudnyk/fabric,askulkarni2/fabric,kxxoling/fabric,felix-d/fabric,SamuelMarks/fabric,amaniak/fabric,bspink/fabric,kmonsoor/fabric,tekapo/fabric,bitprophet/fabric,opavader/fabric,ericholscher/fabric,cgvarela/fabric,fernandezcuesta/fabric,akaariai/fabric,itoed/fabric,tolbkni/fabric,getsentry/fabric,hrubi/fabric,rane-hs/fabric-py3,jaraco/fabric,qinrong/fabric,likesxuqiang/fabric,StackStorm/fabric,haridsv/fabric,elijah513/fabric,raimon49/fabric,sdelements/fabric,mathiasertl/fabric,bitmonk/fabric,MjAbuz/fabric,simon-engledew/fabric,rbramwell/fabric,xLegoz/fabric,cmattoon/fabric,rodrigc/fabric,pashinin/fabric,ploxiln/fabric,pgroudas/fabric