Fixed traceback when not run as root
Fixed traceback when not run as root

lmcro/letsencrypt,hlieberman/letsencrypt,deserted/letsencrypt,fmarier/letsencrypt,sapics/letsencrypt,lbeltrame/letsencrypt,luorenjin/letsencrypt,g1franc/lets-encrypt-preview,ruo91/letsencrypt,wteiken/letsencrypt,Jonadabe/letsencrypt,hsduk/lets-encrypt-preview,mitnk/letsencrypt,rugk/letsencrypt,hlieberman/letsencrypt,letsencrypt/letsencrypt,brentdax/letsencrypt,tyagi-prashant/letsencrypt,Sveder/letsencrypt,riseofthetigers/letsencrypt,bestwpw/letsencrypt,stewnorriss/letsencrypt,lbeltrame/letsencrypt,Hasimir/letsencrypt,TheBoegl/letsencrypt,rugk/letsencrypt,jsha/letsencrypt,wteiken/letsencrypt,PeterMosmans/letsencrypt,rutsky/letsencrypt,jmhodges/letsencrypt,rlustin/letsencrypt,jtl999/certbot,bestwpw/letsencrypt,jmaurice/letsencrypt,DavidGarciaCat/letsencrypt,ruo91/letsencrypt,BillKeenan/lets-encrypt-preview,martindale/letsencrypt,tdfischer/lets-encrypt-preview,riseofthetigers/letsencrypt,Bachmann1234/letsencrypt,jmaurice/letsencrypt,ghyde/letsencrypt,goofwear/letsencrypt,jsha/letsencrypt,solidgoldbomb/letsencrypt,solidgoldbomb/letsencrypt,Bachmann1234/letsencrypt,xgin/letsencrypt,deserted/letsencrypt,Sveder/letsencrypt,armersong/letsencrypt,tyagi-prashant/letsencrypt,vcavallo/letsencrypt,dietsche/letsencrypt,sapics/letsencrypt,Jonadabe/letsencrypt,PeterMosmans/letsencrypt,thanatos/lets-encrypt-preview,luorenjin/letsencrypt,kevinlondon/letsencrypt,TheBoegl/letsencrypt,VladimirTyrin/letsencrypt,BKreisel/letsencrypt,xgin/letsencrypt,twstrike/le_for_patching,dietsche/letsencrypt,brentdax/letsencrypt,Jadaw1n/letsencrypt,beermix/letsencrypt,rlustin/letsencrypt,sjerdo/letsencrypt,BKreisel/letsencrypt,Jadaw1n/letsencrypt,g1franc/lets-encrypt-preview,kuba/letsencrypt,skynet/letsencrypt,kuba/letsencrypt,rutsky/letsencrypt,ghyde/letsencrypt,skynet/letsencrypt,modulexcite/letsencrypt,armersong/letsencrypt,sjerdo/letsencrypt,kevinlondon/letsencrypt,letsencrypt/letsencrypt,martindale/letsencrypt,fmarier/letsencrypt,jtl999/certbot,stweil/letsencrypt,piru/letsencrypt,piru/letsencrypt,Hasimir/letsencrypt,mitnk/letsencrypt,modulexcite/letsencrypt,ahojjati/letsencrypt,bsmr-misc-forks/letsencrypt,twstrike/le_for_patching,ahojjati/letsencrypt,DavidGarciaCat/letsencrypt,tdfischer/lets-encrypt-preview,VladimirTyrin/letsencrypt,goofwear/letsencrypt,stweil/letsencrypt,beermix/letsencrypt,hsduk/lets-encrypt-preview,bsmr-misc-forks/letsencrypt,mrb/letsencrypt,jmhodges/letsencrypt,stewnorriss/letsencrypt,thanatos/lets-encrypt-preview,lmcro/letsencrypt,mrb/letsencrypt,BillKeenan/lets-encrypt-preview,vcavallo/letsencrypt