Correctly detect EPERM on crypto/rand.Random.Read failure
Correctly detect EPERM on crypto/rand.Random.Read failure

Signed-off-by: Stephen J Day <63efd86fa22882ae89b6027b22a36e4db1f4214d@docker.com>

rochacon/distribution,shin-/docker.github.io,bigsurge/distribution,harche/distribution,docker-zh/docker.github.io,ChenLingPeng/distribution,troy0820/docker.github.io,thaJeztah/distribution,yeghishe/distribution,BradleyA/distribution,genedock/distribution,convox/distribution,xiekeyang/distribution,n1tr0g/distribution,tian-xiaobo/distribution,jackpgriffin/distribution,13W/distribution,ibuildthecloud/distribution,estesp/distribution,jhicks-camgian/distribution,jramseye/distribution,thaJeztah/docker.github.io,jhicks-camgian/distribution,troy0820/docker.github.io,lindenlab/distribution,hpcloud/distribution,alexisbellido/docker.github.io,denverdino/denverdino.github.io,ibuildthecloud/distribution,schu/distribution,shubheksha/docker.github.io,rillig/docker.github.io,curtiszimmerman/distribution,RyanDeng/distribution,mikebrow/distribution,sallyom/distribution,noxiouz/distribution,jordimassaguerpla/distribution,sthapaun/distribution,LuisBosquez/docker.github.io,deis/distribution,curtiszimmerman/distribution,lcarstensen/distribution,jonboulle/distribution,armbuilds/distribution,tschoots/distribution,zerosign/distribution,manoj535/distribution,zerosign/distribution,vdemeester/distribution,imranraja85/distribution,bdwill/docker.github.io,harrisonfeng/distribution,bdwill/docker.github.io,BSWANG/denverdino.github.io,iskradelta/distribution,thelinuxkid/distribution,bpradipt/distribution,calavera/distribution,nateww/distribution,maquanyi/distribution,dalanlan/distribution,ChenLingPeng/distribution,anweiss/docker.github.io,jzwlqx/denverdino.github.io,cyli/distribution,andrewnguyen/distribution,atyenoria/distribution,CodeJuan/distribution,cezarsa/distribution,shin-/docker.github.io,jrjang/distribution,duglin/distribution,anweiss/docker.github.io,mbentley/distribution,aybabtme/distribution,jwhonce/distribution,aprajshekhar/distribution,gdevillele/docker.github.io,menglingwei/denverdino.github.io,jrjang/distribution,LouisKottmann/distribution,joaofnfernandes/docker.github.io,yuwaMSFT2/distribution,nateww/distribution,nwt/distribution,miminar/distribution,Gobliip/distribution,phiroict/docker,danix800/docker.github.io,andrewnguyen/distribution,danix800/docker.github.io,spacexnice/distribution,konnase/distribution,denverdino/denverdino.github.io,hopkings2008/distribution,aduermael/docker.github.io,adambrett-forks/distribution,adambrett-forks/distribution,Gobliip/distribution,sanscontext/docker.github.io,jzwlqx/denverdino.github.io,phiroict/docker,LuisBosquez/docker.github.io,docker-zh/docker.github.io,AoJ/distribution,docker/distribution,hopkings2008/distribution,humble00/distribution,RichardScothern/distribution,gavioto/distribution,jzwlqx/denverdino.github.io,aduermael/docker.github.io,phiroict/docker,imranraja85/distribution,championv/distribution,docker-zh/docker.github.io,menglingwei/denverdino.github.io,anweiss/docker.github.io,joaofnfernandes/docker.github.io,docker/docker.github.io,sergeyfd/distribution,alexisbellido/docker.github.io,shin-/docker.github.io,rodacom/docker-hub,rillig/docker.github.io,alexisbellido/docker.github.io,dv/distribution,beni55/distribution,hanleys/distribution,aibaars/distribution,lorieri/distribution,runcom/distribution,jackpgriffin/distribution,Seb-Solon/distribution,denverdino/distribution-fuse,aybabtme/distribution,docker/distribution,troy0820/docker.github.io,johnstep/docker.github.io,sanscontext/docker.github.io,tt/distribution,denverdino/docker.github.io,jzwlqx/denverdino.github.io,linearregression/distribution,denverdino/denverdino.github.io,danix800/docker.github.io,wangmingshuai/distribution,deis/distribution,rochacon/distribution,ContainerSolutions/distribution,xiekeyang/distribution,noxiouz/distribution,jzwlqx/denverdino.github.io,alexisbellido/docker.github.io,Seb-Solon/distribution,miminar/distribution,menglingwei/denverdino.github.io,sanscontext/docker.github.io,sadlil/distribution,thaJeztah/docker.github.io,AoJ/distribution,tschoots/distribution,LuisBosquez/docker.github.io,amitshukla/distribution,dobril-stanga/distribution,thaJeztah/docker.github.io,londoncalling/docker.github.io,sallyom/distribution,shubheksha/docker.github.io,maquanyi/distribution,djenriquez/distribution,denverdino/distribution-stevvooe,yeghishe/distribution,dave-tucker/distribution,aibaars/distribution,jmitchell/distribution,schu/distribution,arneluehrs/distribution,rillig/docker.github.io,paulczar/distribution,bxy09/distribution,sebrandon1/distribution,pdevine/distribution,menglingwei/denverdino.github.io,jordimassaguerpla/distribution,rbarlow/distribution,beni55/distribution,gdevillele/docker.github.io,RichardScothern/distribution,menglingwei/denverdino.github.io,amitshukla/distribution,arvindkandhare/distribution,aduermael/docker.github.io,zhaytee/distribution,docker/docker.github.io,huamai-io/distribution,LuisBosquez/docker.github.io,stevvooe/distribution,konnase/distribution,mattmoor/distribution,sanscontext/docker.github.io,RaviTezu/distribution,gavioto/distribution,shubheksha/docker.github.io,BrickXu/dis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