Fix bug where os.getlogin() raises an OSError.
Fix bug where os.getlogin() raises an OSError.

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