Print out test results as they become available.
Print out test results as they become available.

Test Plan:
Ran `buck test --all -v 2` and verified that I could see commands
and test results interspersed.
Ordinary `buck test --all` prints out test results as they become available.

MarkRunWu/buck,davido/buck,vschs007/buck,shybovycha/buck,illicitonion/buck,artiya4u/buck,artiya4u/buck,bocon13/buck,facebook/buck,JoelMarcey/buck,Dominator008/buck,rmaz/buck,clonetwin26/buck,dsyang/buck,shs96c/buck,pwz3n0/buck,GerritCodeReview/buck,belomx/open_tools,mikekap/buck,tgummerer/buck,luiseduardohdbackup/buck,marcinkwiatkowski/buck,marcinkwiatkowski/buck,darkforestzero/buck,JoelMarcey/buck,SeleniumHQ/buck,mikekap/buck,janicduplessis/buck,pwz3n0/buck,siddhartharay007/buck,romanoid/buck,mikekap/buck,Distrotech/buck,dushmis/buck,artiya4u/buck,hgl888/buck,OkBuilds/buck,facebook/buck,robbertvanginkel/buck,lukw00/buck,rmaz/buck,shybovycha/buck,k21/buck,dpursehouse/buck,daedric/buck,Distrotech/buck,ilya-klyuchnikov/buck,davido/buck,luiseduardohdbackup/buck,Distrotech/buck,shs96c/buck,dpursehouse/buck,vine/buck,raviagarwal7/buck,dushmis/buck,lukw00/buck,neonichu/buck,zhan-xiong/buck,Learn-Android-app/buck,mnuessler/buck,mogers/buck,sdwilsh/buck,neonichu/buck,neonichu/buck,clonetwin26/buck,MarkRunWu/buck,1yvT0s/buck,Distrotech/buck,siddhartharay007/buck,mikekap/buck,pwz3n0/buck,artiya4u/buck,shybovycha/buck,siddhartharay007/buck,denizt/buck,Heart2009/buck,neonichu/buck,dushmis/buck,luiseduardohdbackup/buck,zhuxiaohao/buck,sdwilsh/buck,rhencke/buck,OkBuilds/buck,ilya-klyuchnikov/buck,davido/buck,romanoid/buck,illicitonion/buck,grumpyjames/buck,justinmuller/buck,marcinkwiatkowski/buck,zhan-xiong/buck,sdwilsh/buck,robbertvanginkel/buck,shybovycha/buck,grumpyjames/buck,mread/buck,zhan-xiong/buck,Heart2009/buck,mnuessler/buck,rhencke/buck,rhencke/buck,illicitonion/buck,artiya4u/buck,thinkernel/buck,robbertvanginkel/buck,marcinkwiatkowski/buck,lukw00/buck,pwz3n0/buck,sdwilsh/buck,zhuxiaohao/buck,tgummerer/buck,saleeh93/buck-cutom,robbertvanginkel/buck,zhan-xiong/buck,romanoid/buck,romanoid/buck,brettwooldridge/buck,liuyang-li/buck,nguyentruongtho/buck,LegNeato/buck,siddhartharay007/buck,grumpyjames/buck,pwz3n0/buck,Dominator008/buck,facebook/buck,bocon13/buck,daedric/buck,dsyang/buck,janicduplessis/buck,hgl888/buck,JoelMarcey/buck,dsyang/buck,clonetwin26/buck,k21/buck,Addepar/buck,artiya4u/buck,vine/buck,brettwooldridge/buck,mikekap/buck,nguyentruongtho/buck,dpursehouse/buck,shs96c/buck,stuhood/buck,clonetwin26/buck,LegNeato/buck,clonetwin26/buck,shs96c/buck,JoelMarcey/buck,mnuessler/buck,MarkRunWu/buck,justinmuller/buck,daedric/buck,JoelMarcey/buck,sdwilsh/buck,mread/buck,vschs007/buck,justinmuller/buck,saleeh93/buck-cutom,siddhartharay007/buck,Heart2009/buck,vschs007/buck,kageiit/buck,1yvT0s/buck,ilya-klyuchnikov/buck,mikekap/buck,raviagarwal7/buck,illicitonion/buck,Heart2009/buck,liuyang-li/buck,tgummerer/buck,stuhood/buck,mnuessler/buck,lukw00/buck,rhencke/buck,thinkernel/buck,1yvT0s/buck,brettwooldridge/buck,daedric/buck,vschs007/buck,mogers/buck,zhan-xiong/buck,vschs007/buck,ilya-klyuchnikov/buck,Addepar/buck,zpao/buck,dsyang/buck,hgl888/buck,dushmis/buck,hgl888/buck,denizt/buck,hgl888/buck,Dominator008/buck,vine/buck,rhencke/buck,lukw00/buck,luiseduardohdbackup/buck,GerritCodeReview/buck,mikekap/buck,1yvT0s/buck,JoelMarcey/buck,k21/buck,dushmis/buck,tgummerer/buck,belomx/open_tools,SeleniumHQ/buck,Addepar/buck,Heart2009/buck,Heart2009/buck,belomx/open_tools,lukw00/buck,Dominator008/buck,rmaz/buck,sdwilsh/buck,pwz3n0/buck,MarkRunWu/buck,pwz3n0/buck,grumpyjames/buck,stuhood/buck,neonichu/buck,zhan-xiong/buck,mogers/buck,k21/buck,mikekap/buck,justinmuller/buck,rowillia/buck,janicduplessis/buck,1yvT0s/buck,vschs007/buck,1yvT0s/buck,tgummerer/buck,zhan-xiong/buck,Dominator008/buck,vschs007/buck,saleeh93/buck-cutom,Addepar/buck,rowillia/buck,davido/buck,saleeh93/buck-cutom,ilya-klyuchnikov/buck,janicduplessis/buck,luiseduardohdbackup/buck,artiya4u/buck,shybovycha/buck,hgl888/buck,liuyang-li/buck,davido/buck,denizt/buck,vine/buck,GerritCodeReview/buck,Dominator008/buck,Learn-Android-app/buck,vschs007/buck,Learn-Android-app/buck,brettwooldridge/buck,grumpyjames/buck,mogers/buck,robbertvanginkel/buck,k21/buck,liuyang-li/buck,vschs007/buck,kageiit/buck,hgl888/buck,rowillia/buck,brettwooldridge/buck,OkBuilds/buck,dpursehouse/buck,nguyentruongtho/buck,SeleniumHQ/buck,davido/buck,robbertvanginkel/buck,marcinkwiatkowski/buck,shybovycha/buck,rowillia/buck,JoelMarcey/buck,JoelMarcey/buck,ilya-klyuchnikov/buck,clonetwin26/buck,nguyentruongtho/buck,zhan-xiong/buck,LegNeato/buck,romanoid/buck,SeleniumHQ/buck,shs96c/buck,mogers/buck,denizt/buck,dushmis/buck,rmaz/buck,dpursehouse/buck,rowillia/buck,lukw00/buck,sdwilsh/buck,bocon13/buck,OkBuilds/buck,k21/buck,shybovycha/buck,SeleniumHQ/buck,sdwilsh/buck,LegNeato/buck,zhan-xiong/buck,JoelMarcey/buck,pwz3n0/buck,justinmuller/buck,zhuxiaohao/buck,thinkernel/buck,zhuxiaohao/buck,k21/buck,k21/buck,zhan-xiong/buck,clonetwin26/buck,LegNeato/buck,romanoid/buck,Addepar/buck,LegNeato/buck,clonetwin26/buck,robbertvanginkel/buck,lukw00/buck,shybovycha/buck,LegNeato/buck,lukw00/buck,grumpyjames/buck,Distrotech/buck,illicitonion/buck,darkforestzero/buck,marcinkwiatkowski/buck,janicduplessis/buck,grumpyjames/buck,brettwooldridge/buck,Dominator008/buck,jackminicloud/buck,Distrotech/buck,Learn-Android-app/buck,rhencke/buck,brettwooldridge/buck,neonichu/buck,saleeh93/buck-cutom,jackminicloud/buck,clonetwin26/buck,sdwilsh/buck,daedric/buck,hgl888/buck,Heart2009/buck,davido/buck,justinmuller/buck,vine/buck,ilya-klyuchnikov/buck,zpao/buck,pwz3n0/buck,robbertvanginkel/buck,darkforestzero/buck,OkBuilds/buck,facebook/buck,LegNeato/buck,shs96c/buck,rmaz/buck,grumpyjames/buck,OkBuilds/buck,raviagarwal7/buck,illicitonion/buck,janicduplessis/buck,romanoid/buck,vine/buck,tgummerer/buck,raviagarwal7/buck,davido/buck,rmaz/buck,Learn-Android-app/buck,janicduplessis/buck,rhencke/buck,neonichu/buck,zpao/buck,raviagarwal7/buck,vine/buck,mnuessler/buck,1yvT0s/buck,brettwooldridge/buck,janicduplessis/buck,marcinkwiatkowski/buck,Dominator008/buck,artiya4u/buck,JoelMarcey/buck,luiseduardohdbackup/buck,dsyang/buck,illicitonion/buck,zhuxiaohao/buck,OkBuilds/buck,jackminicloud/buck,sdwilsh/buck,vschs007/buck,bocon13/buck,mogers/buck,Heart2009/buck,zhan-xiong/buck,mikekap/buck,daedric/buck,Learn-Android-app/buck,romanoid/buck,grumpyjames/buck,Addepar/buck,liuyang-li/buck,siddhartharay007/buck,clonetwin26/buck,Heart2009/buck,Distrotech/buck,Distrotech/buck,janicduplessis/buck,janicduplessis/buck,shybovycha/buck,Dominator008/buck,liuyang-li/buck,bocon13/buck,justinmuller/buck,shybovycha/buck,artiya4u/buck,Learn-Android-app/buck,dpursehouse/buck,OkBuilds/buck,dsyang/buck,shybovycha/buck,dsyang/buck,pwz3n0/buck,luiseduardohdbackup/buck,LegNeato/buck,liuyang-li/buck,marcinkwiatkowski/buck,dushmis/buck,darkforestzero/buck,SeleniumHQ/buck,justinmuller/buck,neonichu/buck,rmaz/buck,romanoid/buck,mnuessler/buck,marcinkwiatkowski/buck,lukw00/buck,kageiit/buck,JoelMarcey/buck,raviagarwal7/buck,zhuxiaohao/buck,hgl888/buck,robbertvanginkel/buck,vine/buck,grumpyjames/buck,dsyang/buck,kageiit/buck,mnuessler/buck,janicduplessis/buck,darkforestzero/buck,SeleniumHQ/buck,darkforestzero/buck,bocon13/buck,Distrotech/buck,davido/buck,clonetwin26/buck,rowillia/buck,LegNeato/buck,mikekap/buck,robbertvanginkel/buck,shybovycha/buck,GerritCodeReview/buck,lukw00/buck,zpao/buck,1yvT0s/buck,illicitonion/buck,shs96c/buck,tgummerer/buck,vine/buck,rmaz/buck,mogers/buck,rowillia/buck,vschs007/buck,zpao/buck,OkBuilds/buck,rmaz/buck,bocon13/buck,k21/buck,dsyang/buck,brettwooldridge/buck,justinmuller/buck,pwz3n0/buck,daedric/buck,Dominator008/buck,SeleniumHQ/buck,davido/buck,rowillia/buck,siddhartharay007/buck,mnuessler/buck,rmaz/buck,bocon13/buck,brettwooldridge/buck,Dominator008/buck,zpao/buck,rowillia/buck,zhuxiaohao/buck,mogers/buck,romanoid/buck,siddhartharay007/buck,LegNeato/buck,SeleniumHQ/buck,marcinkwiatkowski/buck,OkBuilds/buck,dpursehouse/buck,artiya4u/buck,nguyentruongtho/buck,davido/buck,clonetwin26/buck,SeleniumHQ/buck,k21/buck,daedric/buck,facebook/buck,rhencke/buck,romanoid/buck,davido/buck,liuyang-li/buck,tgummerer/buck,sdwilsh/buck,mikekap/buck,justinmuller/buck,stuhood/buck,zpao/buck,stuhood/buck,illicitonion/buck,vschs007/buck,ilya-klyuchnikov/buck,marcinkwiatkowski/buck,artiya4u/buck,romanoid/buck,bocon13/buck,raviagarwal7/buck,rmaz/buck,tgummerer/buck,darkforestzero/buck,daedric/buck,dsyang/buck,Addepar/buck,mogers/buck,nguyentruongtho/buck,shs96c/buck,liuyang-li/buck,justinmuller/buck,SeleniumHQ/buck,darkforestzero/buck,JoelMarcey/buck,k21/buck,illicitonion/buck,mnuessler/buck,mread/buck,SeleniumHQ/buck,mread/buck,facebook/buck,OkBuilds/buck,ilya-klyuchnikov/buck,MarkRunWu/buck,shs96c/buck,Learn-Android-app/buck,facebook/buck,kageiit/buck,bocon13/buck,rowillia/buck,rowillia/buck,nguyentruongtho/buck,k21/buck,ilya-klyuchnikov/buck,dushmis/buck,shs96c/buck,clonetwin26/buck,belomx/open_tools,raviagarwal7/buck,vschs007/buck,daedric/buck,brettwooldridge/buck,luiseduardohdbackup/buck,Learn-Android-app/buck,illicitonion/buck,MarkRunWu/buck,rhencke/buck,zhuxiaohao/buck,justinmuller/buck,zhuxiaohao/buck,rmaz/buck,marcinkwiatkowski/buck,ilya-klyuchnikov/buck,sdwilsh/buck,ilya-klyuchnikov/buck,MarkRunWu/buck,raviagarwal7/buck,sdwilsh/buck,daedric/buck,thinkernel/buck,zhan-xiong/buck,mikekap/buck,OkBuilds/buck,stuhood/buck,stuhood/buck,dpursehouse/buck,brettwooldridge/buck,Addepar/buck,Distrotech/buck,dsyang/buck,shs96c/buck,Distrotech/buck,vine/buck,Learn-Android-app/buck,dushmis/buck,1yvT0s/buck,mread/buck,Addepar/buck,romanoid/buck,SeleniumHQ/buck,JoelMarcey/buck,k21/buck,mogers/buck,bocon13/buck,darkforestzero/buck,daedric/buck,stuhood/buck,robbertvanginkel/buck,robbertvanginkel/buck,shs96c/buck,raviagarwal7/buck,LegNeato/buck,kageiit/buck,dushmis/buck,liuyang-li/buck,tgummerer/buck,rowillia/buck,daedric/buck,raviagarwal7/buck,darkforestzero/buck,grumpyjames/buck,brettwooldridge/buck,stuhood/buck,tgummerer/buck,darkforestzero/buck,shybovycha/buck,rhencke/buck,illicitonion/buck,LegNeato/buck,Addepar/buck,saleeh93/buck-cutom,Addepar/buck,marcinkwiatkowski/buck,jackminicloud/buck,bocon13/buck,neonichu/buck,Learn-Android-app/buck,Addepar/buck,mogers/buck,liuyang-li/buck,MarkRunWu/buck,justinmuller/buck,darkforestzero/buck,darkforestzero/buck,raviagarwal7/buck,denizt/buck,ilya-klyuchnikov/buck,rmaz/buck,mread/buck,Dominator008/buck,zhan-xiong/buck,dsyang/buck,raviagarwal7/buck,kageiit/buck,Addepar/buck,grumpyjames/buck,stuhood/buck,shs96c/buck,rhencke/buck,vine/buck,stuhood/buck,OkBuilds/buck,dsyang/buck,siddhartharay007/buck,robbertvanginkel/buck,davido/buck,luiseduardohdbackup/buck,illicitonion/buck,janicduplessis/buck