core: use Process#wait since childprocess bug is fixed
core: use Process#wait since childprocess bug is fixed

mwarren/vagrant,mpoeter/vagrant,kamazee/vagrant,dharmab/vagrant,wangfakang/vagrant,bdwyertech/vagrant,gbarberi/vagrant,gitebra/vagrant,channui/vagrant,petems/vagrant,Endika/vagrant,aaam/vagrant,mwarren/vagrant,legal90/vagrant,gpkfr/vagrant,lukebakken/vagrant,apertoso/vagrant,taliesins/vagrant,philoserf/vagrant,legal90/vagrant,bryson/vagrant,johntron/vagrant,Chhunlong/vagrant,patrys/vagrant,p0deje/vagrant,mwrock/vagrant,jberends/vagrant,genome21/vagrant,benizi/vagrant,TheBigBear/vagrant,aaam/vagrant,juiceinc/vagrant,PatOShea/vagrant,kalabiyau/vagrant,shtouff/vagrant,invernizzi-at-google/vagrant,loren-osborn/vagrant,benh57/vagrant,jtopper/vagrant,gitebra/vagrant,dhoer/vagrant,denisbr/vagrant,aaam/vagrant,petems/vagrant,evverx/vagrant,legal90/vagrant,invernizzi-at-google/vagrant,zsjohny/vagrant,cgvarela/vagrant,iNecas/vagrant,bshurts/vagrant,rivy/vagrant,jfchevrette/vagrant,mitchellh/vagrant,tbriggs-curse/vagrant,gitebra/vagrant,kamazee/vagrant,lonniev/vagrant,fnewberg/vagrant,Sgoettschkes/vagrant,marxarelli/vagrant,rivy/vagrant,sideci-sample/sideci-sample-vagrant,PatOShea/vagrant,otagi/vagrant,jean/vagrant,mitchellh/vagrant,jberends/vagrant,sax/vagrant,chrisvire/vagrant,loren-osborn/vagrant,denisbr/vagrant,jfchevrette/vagrant,kalabiyau/vagrant,doy/vagrant,obnoxxx/vagrant,h4ck3rm1k3/vagrant,chrisroberts/vagrant,darkn3rd/vagrant,p0deje/vagrant,sideci-sample/sideci-sample-vagrant,petems/vagrant,bheuvel/vagrant,gpkfr/vagrant,otagi/vagrant,Avira/vagrant,sni/vagrant,Sgoettschkes/vagrant,Avira/vagrant,lukebakken/vagrant,darkn3rd/vagrant,ianmiell/vagrant,janek-warchol/vagrant,tbarrongh/vagrant,shtouff/vagrant,jtopper/vagrant,iNecas/vagrant,patrys/vagrant,otagi/vagrant,philoserf/vagrant,ArloL/vagrant,Avira/vagrant,doy/vagrant,patrys/vagrant,pwnall/vagrant,aneeshusa/vagrant,PatOShea/vagrant,signed8bit/vagrant,myrjola/vagrant,legal90/vagrant,mkuzmin/vagrant,mpoeter/vagrant,Chhed13/vagrant,stephancom/vagrant,miguel250/vagrant,chrisroberts/vagrant,vamegh/vagrant,vamegh/vagrant,wangfakang/vagrant,jhoblitt/vagrant,jberends/vagrant,pwnall/vagrant,stephancom/vagrant,MiLk/vagrant,marxarelli/vagrant,PatOShea/vagrant,bryson/vagrant,benizi/vagrant,cgvarela/vagrant,benizi/vagrant,justincampbell/vagrant,tknerr/vagrant,kamazee/vagrant,apertoso/vagrant,nickryand/vagrant,kamigerami/vagrant,iNecas/vagrant,stephancom/vagrant,marxarelli/vagrant,miguel250/vagrant,chrisvire/vagrant,gajdaw/vagrant,tbriggs-curse/vagrant,sideci-sample/sideci-sample-vagrant,mwrock/vagrant,channui/vagrant,chrisvire/vagrant,clinstid/vagrant,kamigerami/vagrant,denisbr/vagrant,gitebra/vagrant,bshurts/vagrant,stephancom/vagrant,ferventcoder/vagrant,mitchellh/vagrant,teotihuacanada/vagrant,teotihuacanada/vagrant,ianmiell/vagrant,janek-warchol/vagrant,carlosefr/vagrant,Chhed13/vagrant,bryson/vagrant,myrjola/vagrant,tbarrongh/vagrant,Sgoettschkes/vagrant,mwrock/vagrant,krig/vagrant,mpoeter/vagrant,obnoxxx/vagrant,crashlytics/vagrant,modulexcite/vagrant,aneeshusa/vagrant,carlosefr/vagrant,nickryand/vagrant,clinstid/vagrant,ArloL/vagrant,fnewberg/vagrant,denisbr/vagrant,fnewberg/vagrant,tbarrongh/vagrant,TheBigBear/vagrant,gbarberi/vagrant,tschortsch/vagrant,johntron/vagrant,krig/vagrant,loren-osborn/vagrant,modulexcite/vagrant,krig/vagrant,lonniev/vagrant,tjanez/vagrant,carlosefr/vagrant,gajdaw/vagrant,clinstid/vagrant,jmanero/vagrant,bdwyertech/vagrant,taliesins/vagrant,myrjola/vagrant,genome21/vagrant,genome21/vagrant,signed8bit/vagrant,blueyed/vagrant,philoserf/vagrant,miguel250/vagrant,mwarren/vagrant,jean/vagrant,Chhed13/vagrant,modulexcite/vagrant,blueyed/vagrant,jberends/vagrant,dhoer/vagrant,theist/vagrant,tbriggs-curse/vagrant,wkolean/vagrant,dhoer/vagrant,jhoblitt/vagrant,tknerr/vagrant,bdwyertech/vagrant,ferventcoder/vagrant,bshurts/vagrant,zsjohny/vagrant,jmanero/vagrant,tomfanning/vagrant,h4ck3rm1k3/vagrant,dharmab/vagrant,dharmab/vagrant,PatrickLang/vagrant,jkburges/vagrant,lonniev/vagrant,tschortsch/vagrant,PatrickLang/vagrant,aneeshusa/vagrant,Chhunlong/vagrant,dustymabe/vagrant,h4ck3rm1k3/vagrant,tknerr/vagrant,philwrenn/vagrant,p0deje/vagrant,lukebakken/vagrant,gajdaw/vagrant,marxarelli/vagrant,gbarberi/vagrant,dharmab/vagrant,doy/vagrant,evverx/vagrant,jtopper/vagrant,miguel250/vagrant,chrisroberts/vagrant,justincampbell/vagrant,jhoblitt/vagrant,invernizzi-at-google/vagrant,senglin/vagrant,ArloL/vagrant,nickryand/vagrant,taliesins/vagrant,bshurts/vagrant,kamazee/vagrant,jhoblitt/vagrant,aneeshusa/vagrant,benh57/vagrant,bheuvel/vagrant,mpoeter/vagrant,ianmiell/vagrant,juiceinc/vagrant,tomfanning/vagrant,modulexcite/vagrant,pwnall/vagrant,shtouff/vagrant,theist/vagrant,Avira/vagrant,tjanez/vagrant,janek-warchol/vagrant,vamegh/vagrant,TheBigBear/vagrant,signed8bit/vagrant,kalabiyau/vagrant,apertoso/vagrant,ianmiell/vagrant,philwrenn/vagrant,mkuzmin/vagrant,tknerr/vagrant,sax/vagrant,darkn3rd/vagrant,blueyed/vagrant,Chhed13/vagrant,evverx/vagrant,gpkfr/vagrant,wkolean/vagrant,shtouff/vagrant,Endika/vagrant,petems/vagrant,zsjohny/vagrant,philwrenn/vagrant,BlakeMesdag/vagrant,juiceinc/vagrant,jean/vagrant,MiLk/vagrant,obnoxxx/vagrant,Endika/vagrant,justincampbell/vagrant,justincampbell/vagrant,otagi/vagrant,crashlytics/vagrant,tschortsch/vagrant,benh57/vagrant,Endika/vagrant,zsjohny/vagrant,signed8bit/vagrant,crashlytics/vagrant,mitchellh/vagrant,senglin/vagrant,TheBigBear/vagrant,channui/vagrant,philwrenn/vagrant,lukebakken/vagrant,jmanero/vagrant,dustymabe/vagrant,wkolean/vagrant,PatrickLang/vagrant,jkburges/vagrant,gpkfr/vagrant,h4ck3rm1k3/vagrant,ferventcoder/vagrant,Chhunlong/vagrant,jkburges/vagrant,krig/vagrant,mkuzmin/vagrant,wangfakang/vagrant,chrisroberts/vagrant,dhoer/vagrant,rivy/vagrant,teotihuacanada/vagrant,kamigerami/vagrant,sax/vagrant,tjanez/vagrant,theist/vagrant,ferventcoder/vagrant,sni/vagrant,crashlytics/vagrant,pwnall/vagrant,myrjola/vagrant,benizi/vagrant,bheuvel/vagrant,dustymabe/vagrant,PatrickLang/vagrant,jkburges/vagrant,teotihuacanada/vagrant,invernizzi-at-google/vagrant,gbarberi/vagrant,patrys/vagrant,johntron/vagrant,johntron/vagrant,jfchevrette/vagrant,sni/vagrant,mwarren/vagrant,muhanadra/vagrant,muhanadra/vagrant,doy/vagrant,aaam/vagrant,vamegh/vagrant,mwrock/vagrant,chrisvire/vagrant,senglin/vagrant,tbarrongh/vagrant,loren-osborn/vagrant,carlosefr/vagrant,BlakeMesdag/vagrant,darkn3rd/vagrant,tomfanning/vagrant,philoserf/vagrant,blueyed/vagrant,nickryand/vagrant,kamigerami/vagrant,wkolean/vagrant,muhanadra/vagrant,fnewberg/vagrant,jmanero/vagrant,jtopper/vagrant,muhanadra/vagrant,Chhunlong/vagrant,tschortsch/vagrant,bryson/vagrant,dustymabe/vagrant,ArloL/vagrant,apertoso/vagrant,kalabiyau/vagrant,genome21/vagrant,mkuzmin/vagrant,tjanez/vagrant,rivy/vagrant,juiceinc/vagrant,bheuvel/vagrant,theist/vagrant,jean/vagrant,cgvarela/vagrant,janek-warchol/vagrant,MiLk/vagrant,benh57/vagrant,cgvarela/vagrant,lonniev/vagrant,wangfakang/vagrant,tomfanning/vagrant,jfchevrette/vagrant,senglin/vagrant,BlakeMesdag/vagrant,bdwyertech/vagrant,Sgoettschkes/vagrant,sax/vagrant,tbriggs-curse/vagrant,taliesins/vagrant,sni/vagrant