fix build failure
fix build failure

(https://travis-ci.org/gitlabhq/gitlabhq/builds/3593153)

Keystion/gitlabhq,akumetsuv/gitlab,youprofit/gitlabhq,H3Chief/gitlabhq,Soullivaneuh/gitlabhq,yfaizal/gitlabhq,ordiychen/gitlabhq,dwrensha/gitlabhq,sekcheong/gitlabhq,WSDC-NITWarangal/gitlabhq,sekcheong/gitlabhq,htve/GitlabForChinese,MauriceMohlek/gitlabhq,initiummedia/gitlabhq,fearenales/gitlabhq,joalmeid/gitlabhq,ArthurHoaro/Public-GitLab,fpgentil/gitlabhq,michaKFromParis/gitlabhqold,ArthurHoaro/Public-GitLab,michaKFromParis/gitlabhq,ferdinandrosario/gitlabhq,childbamboo/gitlabhq,Devin001/gitlabhq,ayufan/gitlabhq,fpgentil/gitlabhq,folpindo/gitlabhq,vjustov/gitlabhq,NuLL3rr0r/gitlabhq,yatish27/gitlabhq,NKMR6194/gitlabhq,ksoichiro/gitlabhq,copystudy/gitlabhq,joalmeid/gitlabhq,betabot7/gitlabhq,chadyred/gitlabhq,mr-dxdy/gitlabhq,jrjang/gitlabhq,shinexiao/gitlabhq,neiljbrookes/glab,betabot7/gitlabhq,fearenales/gitlabhq,copystudy/gitlabhq,dplarson/gitlabhq,allysonbarros/gitlabhq,atomaka/gitlabhq,stanhu/gitlabhq,tim-hoff/gitlabhq,nmav/gitlabhq,aaronsnyder/gitlabhq,dwrensha/gitlabhq,dukex/gitlabhq,gorgee/gitlabhq,initiummedia/gitlabhq,chenrui2014/gitlabhq,cinderblock/gitlabhq,hq804116393/gitlabhq,mente/gitlabhq,fscherwi/gitlabhq,youprofit/gitlabhq,8thcolor/eurucamp2014-htdsadr,whluwit/gitlabhq,jaepyoung/gitlabhq,jaepyoung/gitlabhq,nguyen-tien-mulodo/gitlabhq,larryli/gitlabhq,stoplightio/gitlabhq,goeun/myRepo,michaKFromParis/gitlabhq,allysonbarros/gitlabhq,pulkit21/gitlabhq,yatish27/gitlabhq,aaronsnyder/gitlabhq,123Haynes/gitlabhq,mente/gitlabhq,joalmeid/gitlabhq,nmav/gitlabhq,adaiguoguo/gitlab_globalserarch,flashbuckets/gitlabhq,szechyjs/gitlabhq,mr-dxdy/gitlabhq,it33/gitlabhq,eliasp/gitlabhq,ikappas/gitlabhq,OlegGirko/gitlab-ce,rebecamendez/gitlabhq,rhels/gitlabhq,ferdinandrosario/gitlabhq,stoplightio/gitlabhq,windymid/test2,Soullivaneuh/gitlabhq,yulchitaj/TEST3,openwide-java/gitlabhq,yfaizal/gitlabhq,revaret/gitlabhq,Kambda/mobbr-gitlabhq,fscherwi/gitlabhq,pkallberg/tjenare,manfer/gitlabhq,Keystion/gitlabhq,yulchitaj/TEST3,openwide-java/gitlabhq,theonlydoo/gitlabhq,manfer/gitlabhq,revaret/gitlabhq,mr-dxdy/gitlabhq,k4zzk/gitlabhq,theonlydoo/gitlabhq,Exeia/gitlabhq,darkrasid/gitlabhq,jvanbaarsen/gitlabhq,betabot7/gitlabhq,Razer6/gitlabhq,yuyue2013/ss,salipro4ever/gitlabhq,Exeia/gitlabhq,rhels/gitlabhq,williamherry/gitlabhq,manfer/gitlabhq,theonlydoo/gitlabhq,since2014/gitlabhq,gorgee/gitlabhq,ikappas/gitlabhq,tempbottle/gitlabhq,daiyu/gitlab-zh,WSDC-NITWarangal/gitlabhq,szechyjs/gitlabhq,lvfeng1130/gitlabhq,mathstuf/gitlabhq,8thcolor/rubyconfau2015-sadr,kemenaran/gitlabhq,Keystion/gitlabhq,mrb/gitlabhq,8thcolor/testing-public-gitlabhq,martijnvermaat/gitlabhq,delkyd/gitlabhq,cinderblock/gitlabhq,fscherwi/gitlabhq,rfeese/gitlab-ce,darkrasid/gitlabhq,duduribeiro/gitlabhq,OlegGirko/gitlab-ce,8thcolor/testing-public-gitlabhq,8thcolor/eurucamp2014-htdsadr,openwide-java/gitlabhq,k4zzk/gitlabhq,Exeia/gitlabhq,mr-dxdy/gitlabhq,Razer6/gitlabhq,pkallberg/tjenare,aaronsnyder/gitlabhq,fendoudeqingchunhh/gitlabhq,zBMNForks/gitlabhq,luzhongyang/gitlabhq,icedwater/gitlabhq,Burick/gitlabhq,salipro4ever/gitlabhq,nguyen-tien-mulodo/gitlabhq,adaiguoguo/gitlab_globalserarch,szechyjs/gitlabhq,axilleas/gitlabhq,fantasywind/gitlabhq,manfer/gitlabhq,yatish27/gitlabhq,Devin001/gitlabhq,williamherry/gitlabhq,MauriceMohlek/gitlabhq,1ed/gitlabhq,bigsurge/gitlabhq,xuvw/gitlabhq,sue445/gitlabhq,per-garden/gitlabhq,sakishum/gitlabhq,screenpages/gitlabhq,fgbreel/gitlabhq,mmkassem/gitlabhq,johnmyqin/gitlabhq,rfeese/gitlab-ce,martijnvermaat/gitlabhq,bladealslayer/gitlabhq,pupaxxo/gitlabhq,folpindo/gitlabhq,8thcolor/rubyconfau2015-sadr,atomaka/gitlabhq,jaepyoung/gitlabhq,koreamic/gitlabhq,phinfonet/mobbr-gitlabhq,ksoichiro/gitlabhq,Razer6/gitlabhq,OtkurBiz/gitlabhq,fscherwi/gitlabhq,shinexiao/gitlabhq,copystudy/gitlabhq,Burick/gitlabhq,DanielZhangQingLong/gitlabhq,liyakun/gitlabhq,windymid/test2,fantasywind/gitlabhq,htve/GitlabForChinese,dreampet/gitlab,jirutka/gitlabhq,H3Chief/gitlabhq,michaKFromParis/sparkslab,luzhongyang/gitlabhq,theodi/gitlabhq,bozaro/gitlabhq,dplarson/gitlabhq,zBMNForks/gitlabhq,nguyen-tien-mulodo/gitlabhq,8thcolor/testing-public-gitlabhq,eliasp/gitlabhq,Kambda/mobbr-gitlabhq,goeun/myRepo,initiummedia/gitlabhq,Tyrael/gitlabhq,delkyd/gitlabhq,cncodog/gitlab,kitech/gitlabhq,chadyred/gitlabhq,bbodenmiller/gitlabhq,johnmyqin/gitlabhq,bladealslayer/gitlabhq,kemenaran/gitlabhq,123Haynes/gitlabhq,k4zzk/gitlabhq,achako/gitlabhq,johnmyqin/gitlabhq,nmav/gitlabhq,michaKFromParis/sparkslab,louahola/gitlabhq,tk23/gitlabhq,ttasanen/gitlabhq,Razer6/gitlabhq,mmkassem/gitlabhq,123Haynes/gitlabhq,ikappas/gitlabhq,dvrylc/gitlabhq,hq804116393/gitlabhq,whluwit/gitlabhq,bbodenmiller/gitlabhq,copystudy/gitlabhq,OlegGirko/gitlab-ce,cncodog/gitlab,SkyWei/gitlabhq,sue445/gitlabhq,allysonbarros/gitlabhq,salipro4ever/gitlabhq,screenpages/gitlabhq,Soullivaneuh/gitlabhq,bbodenmiller/gitlabhq,ttasanen/gitlabhq,cui-liqiang/gitlab-ce,tim-hoff/gitlabhq,zrbsprite/gitlabhq,fpgentil/gitlabhq,dvrylc/gitlabhq,daiyu/gitlab-zh,mathstuf/gitlabhq,LytayTOUCH/gitlabhq,jrjang/gitlab-ce,nmav/gitlabhq,yama07/gitlabhq,revaret/gitlabhq,1ed/gitlabhq,since2014/gitlabhq,H3Chief/gitlabhq,dvrylc/gitlabhq,akumetsuv/gitlab,kotaro-dev/gitlab-6-9,pjknkda/gitlabhq,kitech/gitlabhq,theodi/gitlabhq,julianengel/gitlabhq,achako/gitlabhq,openwide-java/gitlabhq,jrjang/gitlab-ce,stoplightio/gitlabhq,ikappas/gitlabhq,Tyrael/gitlabhq,szechyjs/gitlabhq,LytayTOUCH/gitlabhq,it33/gitlabhq,allistera/gitlabhq,pkallberg/tjenare,8thcolor/rubyconfau2015-sadr,yuyue2013/ss,WSDC-NITWarangal/gitlabhq,since2014/gitlabhq,lbt/gitlabhq,whluwit/gitlabhq,LUMC/gitlabhq,martijnvermaat/gitlabhq,fearenales/gitlabhq,johnmyqin/gitlabhq,michaKFromParis/gitlabhqold,rfeese/gitlab-ce,LytayTOUCH/gitlabhq,luzhongyang/gitlabhq,NKMR6194/gitlabhq,Burick/gitlabhq,pupaxxo/gitlabhq,0x20h/gitlabhq,Kambda/Mobbr,eliasp/gitlabhq,kitech/gitlabhq,folpindo/gitlabhq,LUMC/gitlabhq,htve/GitlabForChinese,sonalkr132/gitlabhq,ZeoAlliance/gitlabhq,youprofit/gitlabhq,yulchitaj/TEST3,Datacom/gitlabhq,TheWatcher/gitlabhq,dreampet/gitlab,liyakun/gitlabhq,chenrui2014/gitlabhq,fgbreel/gitlabhq,Datacom/gitlabhq,shinexiao/gitlabhq,fendoudeqingchunhh/gitlabhq,akumetsuv/gitlab,flashbuckets/gitlabhq,liyakun/gitlabhq,wangcan2014/gitlabhq,chenrui2014/gitlabhq,Tyrael/gitlabhq,cinderblock/gitlabhq,revaret/gitlabhq,dreampet/gitlab,tempbottle/gitlabhq,zrbsprite/gitlabhq,SkyWei/gitlabhq,cncodog/gitlab,rebecamendez/gitlabhq,jvanbaarsen/gitlabhq,sekcheong/gitlabhq,WSDC-NITWarangal/gitlabhq,NKMR6194/gitlabhq,jairzh/gitlabhq-sfdc,MauriceMohlek/gitlabhq,cinderblock/gitlabhq,jirutka/gitlabhq,NKMR6194/gitlabhq,folpindo/gitlabhq,goeun/myRepo,stellamiranda/mobbr-gitlabhq,ngpestelos/gitlabhq,it33/gitlabhq,stanhu/gitlabhq,OtkurBiz/gitlabhq,kitech/gitlabhq,8thcolor/eurucamp2014-htdsadr,koreamic/gitlabhq,iiet/iiet-git,SVArago/gitlabhq,pkgr/gitlabhq,OlegGirko/gitlab-ce,ferdinandrosario/gitlabhq,fearenales/gitlabhq,stellamiranda/mobbr-gitlabhq,pulkit21/gitlabhq,SVArago/gitlabhq,hq804116393/gitlabhq,martinma4/gitlabhq,NuLL3rr0r/gitlabhq,larryli/gitlabhq,per-garden/gitlabhq,screenpages/gitlabhq,martinma4/gitlabhq,DanielZhangQingLong/gitlabhq,neiljbrookes/glab,delkyd/gitlabhq,martinma4/gitlabhq,cui-liqiang/gitlab-ce,vjustov/gitlabhq,cui-liqiang/gitlab-ce,yama07/gitlabhq,Tyrael/gitlabhq,sideci-sample/sideci-sample-gitlabhq,louahola/gitlabhq,windymid/test2,ayufan/gitlabhq,ordiychen/gitlabhq,pulkit21/gitlabhq,yama07/gitlabhq,julianengel/gitlabhq,t-zuehlsdorff/gitlabhq,Kambda/Mobbr,dreampet/gitlab,yatish27/gitlabhq,yonglehou/gitlabhq,bigsurge/gitlabhq,duduribeiro/gitlabhq,dplarson/gitlabhq,tempbottle/gitlabhq,sekcheong/gitlabhq,julianengel/gitlabhq,NARKOZ/gitlabhq,vjustov/gitlabhq,per-garden/gitlabhq,sue445/gitlabhq,screenpages/gitlabhq,ibiart/gitlabhq,childbamboo/gitlabhq,axilleas/gitlabhq,dplarson/gitlabhq,michaKFromParis/gitlabhqold,Burick/gitlabhq,theonlydoo/gitlabhq,dukex/gitlabhq,LUMC/gitlabhq,michaKFromParis/gitlabhqold,TheWatcher/gitlabhq,sonalkr132/gitlabhq,dwrensha/gitlabhq,ksoichiro/gitlabhq,rebecamendez/gitlabhq,neiljbrookes/glab,jrjang/gitlabhq,NARKOZ/gitlabhq,NARKOZ/gitlabhq,chadyred/gitlabhq,jrjang/gitlabhq,ngpestelos/gitlabhq,pkgr/gitlabhq,t-zuehlsdorff/gitlabhq,bladealslayer/gitlabhq,pulkit21/gitlabhq,TheWatcher/gitlabhq,tempbottle/gitlabhq,1ed/gitlabhq,tk23/gitlabhq,tk23/gitlabhq,jaepyoung/gitlabhq,pupaxxo/gitlabhq,childbamboo/gitlabhq,Datacom/gitlabhq,icedwater/gitlabhq,icedwater/gitlabhq,larryli/gitlabhq,SkyWei/gitlabhq,stellamiranda/mobbr-gitlabhq,jrjang/gitlab-ce,Kambda/Mobbr,allistera/gitlabhq,hacsoc/gitlabhq,ayufan/gitlabhq,adaiguoguo/gitlab_globalserarch,lbt/gitlabhq,ferdinandrosario/gitlabhq,mmkassem/gitlabhq,fendoudeqingchunhh/gitlabhq,daiyu/gitlab-zh,chenrui2014/gitlabhq,hzy001/gitlabhq,mrb/gitlabhq,sonalkr132/gitlabhq,darkrasid/gitlabhq,jvanbaarsen/gitlabhq,fantasywind/gitlabhq,gorgee/gitlabhq,gorgee/gitlabhq,tim-hoff/gitlabhq,tim-hoff/gitlabhq,bozaro/gitlabhq,sideci-sample/sideci-sample-gitlabhq,duduribeiro/gitlabhq,jvanbaarsen/gitlabhq,delkyd/gitlabhq,ngpestelos/gitlabhq,gopeter/gitlabhq,ArthurHoaro/Public-GitLab,mavimo/gitlabhq,Devin001/gitlabhq,lbt/gitlabhq,pjknkda/gitlabhq,t-zuehlsdorff/gitlabhq,htve/GitlabForChinese,chadyred/gitlabhq,iiet/iiet-git,SVArago/gitlabhq,atomaka/gitlabhq,cui-liqiang/gitlab-ce,ksoichiro/gitlabhq,childbamboo/gitlabhq,per-garden/gitlabhq,allistera/gitlabhq,lvfeng1130/gitlabhq,ZeoAlliance/gitlabhq,initiummedia/gitlabhq,yonglehou/gitlabhq,OtkurBiz/gitlabhq,Telekom-PD/gitlabhq,hacsoc/gitlabhq,mavimo/gitlabhq,theodi/gitlabhq,jirutka/gitlabhq,lvfeng1130/gitlabhq,louahola/gitlabhq,dukex/gitlabhq,mathstuf/gitlabhq,shinexiao/gitlabhq,allistera/gitlabhq,luzhongyang/gitlabhq,rhels/gitlabhq,martijnvermaat/gitlabhq,rumpelsepp/gitlabhq,NuLL3rr0r/gitlabhq,CodeCantor/gitlabhq,williamherry/gitlabhq,dvrylc/gitlabhq,OtkurBiz/gitlabhq,DanielZhangQingLong/gitlabhq,Kambda/mobbr-gitlabhq,kotaro-dev/gitlab-6-9,allysonbarros/gitlabhq,rhels/gitlabhq,ttasanen/gitlabhq,k4zzk/gitlabhq,Devin001/gitlabhq,theodi/gitlabhq,LytayTOUCH/gitlabhq,wangcan2014/gitlabhq,duduribeiro/gitlabhq,larryli/gitlabhq,salipro4ever/gitlabhq,mmkassem/gitlabhq,MauriceMohlek/gitlabhq,williamherry/gitlabhq,it33/gitlabhq,gopeter/gitlabhq,axilleas/gitlabhq,ibiart/gitlabhq,rumpelsepp/gitlabhq,michaKFromParis/sparkslab,0x20h/gitlabhq,stanhu/gitlabhq,flashbuckets/gitlabhq,jairzh/gitlabhq-sfdc,ordiychen/gitlabhq,icedwater/gitlabhq,NARKOZ/gitlabhq,gopeter/gitlabhq,phinfonet/mobbr-gitlabhq,yonglehou/gitlabhq,mente/gitlabhq,Telekom-PD/gitlabhq,since2014/gitlabhq,H3Chief/gitlabhq,jairzh/gitlabhq-sfdc,zBMNForks/gitlabhq,mente/gitlabhq,ttasanen/gitlabhq,bozaro/gitlabhq,SkyWei/gitlabhq,iiet/iiet-git,michaKFromParis/gitlabhq,Keystion/gitlabhq,rebecamendez/gitlabhq,DanielZhangQingLong/gitlabhq,ZeoAlliance/gitlabhq,sue445/gitlabhq,hzy001/gitlabhq,t-zuehlsdorff/gitlabhq,yuyue2013/ss,sakishum/gitlabhq,dwrensha/gitlabhq,wangcan2014/gitlabhq,jrjang/gitlab-ce,0x20h/gitlabhq,mavimo/gitlabhq,ayufan/gitlabhq,kotaro-dev/gitlab-6-9,hacsoc/gitlabhq,Datacom/gitlabhq,zrbsprite/gitlabhq,bbodenmiller/gitlabhq,xuvw/gitlabhq,yonglehou/gitlabhq,mavimo/gitlabhq,vjustov/gitlabhq,sakishum/gitlabhq,yfaizal/gitlabhq,cncodog/gitlab,phinfonet/mobbr-gitlabhq,rumpelsepp/gitlabhq,pjknkda/gitlabhq,martinma4/gitlabhq,lvfeng1130/gitlabhq,louahola/gitlabhq,rumpelsepp/gitlabhq,SVArago/gitlabhq,stoplightio/gitlabhq,gopeter/gitlabhq,yama07/gitlabhq,kemenaran/gitlabhq,tk23/gitlabhq,achako/gitlabhq,hacsoc/gitlabhq,eliasp/gitlabhq,fgbreel/gitlabhq,mathstuf/gitlabhq,yuyue2013/ss,jrjang/gitlabhq,julianengel/gitlabhq,bozaro/gitlabhq,jairzh/gitlabhq-sfdc,aaronsnyder/gitlabhq,dukex/gitlabhq,LUMC/gitlabhq,nguyen-tien-mulodo/gitlabhq,pkgr/gitlabhq,jirutka/gitlabhq,michaKFromParis/sparkslab,axilleas/gitlabhq,bigsurge/gitlabhq,flashbuckets/gitlabhq,mrb/gitlabhq,sonalkr132/gitlabhq,hzy001/gitlabhq,michaKFromParis/gitlabhq,yulchitaj/TEST3,youprofit/gitlabhq,hzy001/gitlabhq,TheWatcher/gitlabhq,pjknkda/gitlabhq,wangcan2014/gitlabhq,kemenaran/gitlabhq,darkrasid/gitlabhq,liyakun/gitlabhq,fpgentil/gitlabhq,xuvw/gitlabhq,ibiart/gitlabhq,koreamic/gitlabhq,hq804116393/gitlabhq,bigsurge/gitlabhq,whluwit/gitlabhq,fendoudeqingchunhh/gitlabhq,Telekom-PD/gitlabhq,yfaizal/gitlabhq,joalmeid/gitlabhq,Exeia/gitlabhq,adaiguoguo/gitlab_globalserarch,zrbsprite/gitlabhq,koreamic/gitlabhq,iiet/iiet-git,sakishum/gitlabhq,Telekom-PD/gitlabhq,zBMNForks/gitlabhq,ngpestelos/gitlabhq,fgbreel/gitlabhq,mrb/gitlabhq,CodeCantor/gitlabhq,rfeese/gitlab-ce,stanhu/gitlabhq,ordiychen/gitlabhq,daiyu/gitlab-zh,Soullivaneuh/gitlabhq,fantasywind/gitlabhq,CodeCantor/gitlabhq,sideci-sample/sideci-sample-gitlabhq