+test-double-alts: checks provisional builds used by another build
+test-double-alts: checks provisional builds used by another build

ngzax/urbit,urbit/urbit,urbit/urbit,joemfb/arvo,belisarius222/arvo,jfranklin9000/urbit,ngzax/urbit,belisarius222/arvo,jfranklin9000/urbit,jfranklin9000/urbit,ngzax/urbit,jfranklin9000/urbit,urbit/urbit,ngzax/urbit,urbit/urbit,ngzax/urbit,urbit/urbit,ngzax/urbit,urbit/urbit,jfranklin9000/urbit,urbit/urbit,jfranklin9000/urbit,jfranklin9000/urbit,joemfb/arvo,ngzax/urbit