emoji_dump: Exit with nonzero status when there are failures.
emoji_dump: Exit with nonzero status when there are failures.

Previously, emoji_dump would happily exit successfully even if it
wasn't able to generate all the emoji.

dattatreya303/zulip,ryanbackman/zulip,tommyip/zulip,showell/zulip,amyliu345/zulip,aakash-cr7/zulip,AZtheAsian/zulip,dwrpayne/zulip,calvinleenyc/zulip,krtkmj/zulip,blaze225/zulip,amyliu345/zulip,souravbadami/zulip,eeshangarg/zulip,Juanvulcano/zulip,tommyip/zulip,ashwinirudrappa/zulip,atomic-labs/zulip,isht3/zulip,blaze225/zulip,brainwane/zulip,jphilipsen05/zulip,kou/zulip,rishig/zulip,rht/zulip,brockwhittaker/zulip,synicalsyntax/zulip,ryansnowboarder/zulip,umkay/zulip,eeshangarg/zulip,esander91/zulip,SmartPeople/zulip,vakila/zulip,dawran6/zulip,jackrzhang/zulip,vabs22/zulip,niftynei/zulip,hackerkid/zulip,isht3/zulip,vaidap/zulip,arpith/zulip,Frouk/zulip,joyhchen/zulip,brockwhittaker/zulip,zulip/zulip,jackrzhang/zulip,Vallher/zulip,brockwhittaker/zulip,vakila/zulip,aakash-cr7/zulip,ashwinirudrappa/zulip,reyha/zulip,dhcrzf/zulip,mahim97/zulip,krtkmj/zulip,amyliu345/zulip,sonali0901/zulip,paxapy/zulip,KingxBanana/zulip,blaze225/zulip,verma-varsha/zulip,j831/zulip,PhilSk/zulip,grave-w-grave/zulip,amanharitsh123/zulip,andersk/zulip,brockwhittaker/zulip,Diptanshu8/zulip,hackerkid/zulip,zulip/zulip,calvinleenyc/zulip,umkay/zulip,alliejones/zulip,vaidap/zulip,atomic-labs/zulip,rishig/zulip,jainayush975/zulip,esander91/zulip,grave-w-grave/zulip,jainayush975/zulip,punchagan/zulip,karamcnair/zulip,dattatreya303/zulip,ahmadassaf/zulip,jrowan/zulip,niftynei/zulip,peguin40/zulip,synicalsyntax/zulip,punchagan/zulip,peiwei/zulip,eeshangarg/zulip,KingxBanana/zulip,AZtheAsian/zulip,gkotian/zulip,kou/zulip,vikas-parashar/zulip,vikas-parashar/zulip,amyliu345/zulip,sonali0901/zulip,arpith/zulip,dattatreya303/zulip,zacps/zulip,rht/zulip,andersk/zulip,PhilSk/zulip,karamcnair/zulip,tommyip/zulip,Juanvulcano/zulip,joyhchen/zulip,ahmadassaf/zulip,jackrzhang/zulip,JPJPJPOPOP/zulip,zacps/zulip,dattatreya303/zulip,reyha/zulip,zacps/zulip,samatdav/zulip,peguin40/zulip,jackrzhang/zulip,alliejones/zulip,peiwei/zulip,AZtheAsian/zulip,isht3/zulip,rishig/zulip,arpith/zulip,vakila/zulip,gkotian/zulip,zacps/zulip,brainwane/zulip,Frouk/zulip,punchagan/zulip,jainayush975/zulip,vabs22/zulip,souravbadami/zulip,timabbott/zulip,Frouk/zulip,peguin40/zulip,Diptanshu8/zulip,j831/zulip,showell/zulip,amanharitsh123/zulip,andersk/zulip,timabbott/zulip,jrowan/zulip,karamcnair/zulip,kou/zulip,sup95/zulip,esander91/zulip,Galexrt/zulip,dawran6/zulip,paxapy/zulip,dwrpayne/zulip,JPJPJPOPOP/zulip,ashwinirudrappa/zulip,peguin40/zulip,kou/zulip,vakila/zulip,joyhchen/zulip,arpith/zulip,sonali0901/zulip,jainayush975/zulip,kou/zulip,sharmaeklavya2/zulip,PhilSk/zulip,verma-varsha/zulip,samatdav/zulip,SmartPeople/zulip,j831/zulip,ryanbackman/zulip,Galexrt/zulip,ryansnowboarder/zulip,Vallher/zulip,shubhamdhama/zulip,jackrzhang/zulip,synicalsyntax/zulip,niftynei/zulip,Jianchun1/zulip,brainwane/zulip,AZtheAsian/zulip,Juanvulcano/zulip,tommyip/zulip,jainayush975/zulip,jrowan/zulip,esander91/zulip,rht/zulip,jrowan/zulip,susansls/zulip,jphilipsen05/zulip,souravbadami/zulip,rishig/zulip,esander91/zulip,calvinleenyc/zulip,susansls/zulip,punchagan/zulip,umkay/zulip,dhcrzf/zulip,peguin40/zulip,dawran6/zulip,alliejones/zulip,mohsenSy/zulip,joyhchen/zulip,vakila/zulip,ashwinirudrappa/zulip,christi3k/zulip,TigorC/zulip,Frouk/zulip,alliejones/zulip,sup95/zulip,niftynei/zulip,cosmicAsymmetry/zulip,TigorC/zulip,aakash-cr7/zulip,verma-varsha/zulip,zulip/zulip,vaidap/zulip,zulip/zulip,paxapy/zulip,christi3k/zulip,samatdav/zulip,blaze225/zulip,umkay/zulip,grave-w-grave/zulip,ashwinirudrappa/zulip,hackerkid/zulip,mohsenSy/zulip,souravbadami/zulip,punchagan/zulip,niftynei/zulip,eeshangarg/zulip,showell/zulip,dawran6/zulip,atomic-labs/zulip,souravbadami/zulip,krtkmj/zulip,showell/zulip,alliejones/zulip,vabs22/zulip,JPJPJPOPOP/zulip,andersk/zulip,sharmaeklavya2/zulip,peiwei/zulip,brockwhittaker/zulip,rht/zulip,andersk/zulip,hackerkid/zulip,timabbott/zulip,timabbott/zulip,blaze225/zulip,Jianchun1/zulip,dhcrzf/zulip,sharmaeklavya2/zulip,Diptanshu8/zulip,susansls/zulip,grave-w-grave/zulip,punchagan/zulip,zacps/zulip,joyhchen/zulip,synicalsyntax/zulip,vikas-parashar/zulip,dwrpayne/zulip,SmartPeople/zulip,shubhamdhama/zulip,ryansnowboarder/zulip,PhilSk/zulip,isht3/zulip,jrowan/zulip,j831/zulip,christi3k/zulip,cosmicAsymmetry/zulip,dwrpayne/zulip,brainwane/zulip,isht3/zulip,sup95/zulip,sharmaeklavya2/zulip,reyha/zulip,dattatreya303/zulip,peiwei/zulip,alliejones/zulip,gkotian/zulip,paxapy/zulip,ashwinirudrappa/zulip,atomic-labs/zulip,arpith/zulip,christi3k/zulip,jphilipsen05/zulip,karamcnair/zulip,mahim97/zulip,reyha/zulip,ryansnowboarder/zulip,Galexrt/zulip,sup95/zulip,paxapy/zulip,Diptanshu8/zulip,synicalsyntax/zulip,showell/zulip,Juanvulcano/zulip,sup95/zulip,krtkmj/zulip,ahmadassaf/zulip,jackrzhang/zulip,Diptanshu8/zulip,cosmicAsymmetry/zulip,vabs22/zulip,Frouk/zulip,tommyip/zulip,amanharitsh123/zulip,rht/zulip,kou/zulip,zulip/zulip,jainayush975/zulip,verma-varsha/zulip,susansls/zulip,krtkmj/zulip,peiwei/zulip,andersk/zulip,dawran6/zulip,Vallher/zulip,Diptanshu8/zulip,punchagan/zulip,atomic-labs/zulip,gkotian/zulip,TigorC/zulip,PhilSk/zulip,Juanvulcano/zulip,kou/zulip,shubhamdhama/zulip,Vallher/zulip,arpith/zulip,Vallher/zulip,grave-w-grave/zulip,andersk/zulip,SmartPeople/zulip,blaze225/zulip,showell/zulip,tommyip/zulip,TigorC/zulip,christi3k/zulip,shubhamdhama/zulip,mahim97/zulip,ryansnowboarder/zulip,peiwei/zulip,peguin40/zulip,sonali0901/zulip,AZtheAsian/zulip,susansls/zulip,amanharitsh123/zulip,aakash-cr7/zulip,karamcnair/zulip,JPJPJPOPOP/zulip,gkotian/zulip,esander91/zulip,sonali0901/zulip,KingxBanana/zulip,eeshangarg/zulip,Galexrt/zulip,gkotian/zulip,Frouk/zulip,rht/zulip,ahmadassaf/zulip,niftynei/zulip,JPJPJPOPOP/zulip,Juanvulcano/zulip,cosmicAsymmetry/zulip,jphilipsen05/zulip,mohsenSy/zulip,brainwane/zulip,vikas-parashar/zulip,mahim97/zulip,hackerkid/zulip,brainwane/zulip,cosmicAsymmetry/zulip,krtkmj/zulip,verma-varsha/zulip,Vallher/zulip,mohsenSy/zulip,rishig/zulip,JPJPJPOPOP/zulip,atomic-labs/zulip,zulip/zulip,alliejones/zulip,joyhchen/zulip,paxapy/zulip,showell/zulip,amyliu345/zulip,vikas-parashar/zulip,ahmadassaf/zulip,vabs22/zulip,zulip/zulip,shubhamdhama/zulip,dwrpayne/zulip,ryanbackman/zulip,dattatreya303/zulip,zacps/zulip,sharmaeklavya2/zulip,KingxBanana/zulip,Galexrt/zulip,calvinleenyc/zulip,vaidap/zulip,dhcrzf/zulip,KingxBanana/zulip,vabs22/zulip,j831/zulip,hackerkid/zulip,ryansnowboarder/zulip,jphilipsen05/zulip,rishig/zulip,vaidap/zulip,reyha/zulip,dwrpayne/zulip,susansls/zulip,SmartPeople/zulip,hackerkid/zulip,ryanbackman/zulip,Frouk/zulip,shubhamdhama/zulip,Vallher/zulip,amanharitsh123/zulip,dawran6/zulip,sonali0901/zulip,karamcnair/zulip,aakash-cr7/zulip,ahmadassaf/zulip,Jianchun1/zulip,jphilipsen05/zulip,dhcrzf/zulip,vakila/zulip,sup95/zulip,PhilSk/zulip,Galexrt/zulip,dhcrzf/zulip,amyliu345/zulip,Galexrt/zulip,rht/zulip,peiwei/zulip,jackrzhang/zulip,dhcrzf/zulip,ashwinirudrappa/zulip,tommyip/zulip,samatdav/zulip,umkay/zulip,Jianchun1/zulip,Jianchun1/zulip,samatdav/zulip,jrowan/zulip,brockwhittaker/zulip,AZtheAsian/zulip,eeshangarg/zulip,verma-varsha/zulip,TigorC/zulip,timabbott/zulip,synicalsyntax/zulip,umkay/zulip,calvinleenyc/zulip,mahim97/zulip,isht3/zulip,timabbott/zulip,gkotian/zulip,krtkmj/zulip,souravbadami/zulip,vakila/zulip,eeshangarg/zulip,timabbott/zulip,ryanbackman/zulip,grave-w-grave/zulip,esander91/zulip,christi3k/zulip,shubhamdhama/zulip,TigorC/zulip,ryansnowboarder/zulip,ryanbackman/zulip,vikas-parashar/zulip,calvinleenyc/zulip,ahmadassaf/zulip,amanharitsh123/zulip,rishig/zulip,j831/zulip,sharmaeklavya2/zulip,umkay/zulip,brainwane/zulip,mahim97/zulip,mohsenSy/zulip,mohsenSy/zulip,dwrpayne/zulip,cosmicAsymmetry/zulip,synicalsyntax/zulip,reyha/zulip,KingxBanana/zulip,samatdav/zulip,karamcnair/zulip,Jianchun1/zulip,vaidap/zulip,aakash-cr7/zulip,SmartPeople/zulip,atomic-labs/zulip