[Simulators] Only infer simulator environment when there is no environment.
[Simulators] Only infer simulator environment when there is no environment.

hooman/swift,JGiola/swift,apple/swift,ahoppen/swift,tkremenek/swift,stephentyrone/swift,atrick/swift,tkremenek/swift,aschwaighofer/swift,nathawes/swift,gregomni/swift,allevato/swift,gregomni/swift,airspeedswift/swift,gregomni/swift,benlangmuir/swift,harlanhaskins/swift,glessard/swift,stephentyrone/swift,stephentyrone/swift,aschwaighofer/swift,xwu/swift,ahoppen/swift,allevato/swift,jckarter/swift,harlanhaskins/swift,stephentyrone/swift,nathawes/swift,JGiola/swift,ahoppen/swift,hooman/swift,parkera/swift,xwu/swift,tkremenek/swift,hooman/swift,aschwaighofer/swift,parkera/swift,xwu/swift,aschwaighofer/swift,allevato/swift,CodaFi/swift,tkremenek/swift,airspeedswift/swift,stephentyrone/swift,xwu/swift,apple/swift,tkremenek/swift,benlangmuir/swift,xwu/swift,glessard/swift,nathawes/swift,roambotics/swift,parkera/swift,JGiola/swift,glessard/swift,roambotics/swift,harlanhaskins/swift,aschwaighofer/swift,allevato/swift,apple/swift,jmgc/swift,jckarter/swift,CodaFi/swift,glessard/swift,benlangmuir/swift,gregomni/swift,rudkx/swift,apple/swift,glessard/swift,CodaFi/swift,atrick/swift,rudkx/swift,CodaFi/swift,aschwaighofer/swift,parkera/swift,atrick/swift,airspeedswift/swift,harlanhaskins/swift,atrick/swift,apple/swift,jmgc/swift,jckarter/swift,allevato/swift,harlanhaskins/swift,tkremenek/swift,parkera/swift,nathawes/swift,CodaFi/swift,benlangmuir/swift,roambotics/swift,jmgc/swift,atrick/swift,parkera/swift,gregomni/swift,stephentyrone/swift,jmgc/swift,airspeedswift/swift,airspeedswift/swift,roambotics/swift,airspeedswift/swift,xwu/swift,xwu/swift,stephentyrone/swift,jckarter/swift,hooman/swift,jmgc/swift,parkera/swift,CodaFi/swift,hooman/swift,rudkx/swift,harlanhaskins/swift,jckarter/swift,hooman/swift,rudkx/swift,atrick/swift,aschwaighofer/swift,benlangmuir/swift,tkremenek/swift,roambotics/swift,rudkx/swift,nathawes/swift,gregomni/swift,apple/swift,ahoppen/swift,rudkx/swift,JGiola/swift,jckarter/swift,hooman/swift,parkera/swift,ahoppen/swift,airspeedswift/swift,jckarter/swift,glessard/swift,nathawes/swift,ahoppen/swift,benlangmuir/swift,roambotics/swift,jmgc/swift,harlanhaskins/swift,allevato/swift,CodaFi/swift,nathawes/swift,allevato/swift,JGiola/swift,JGiola/swift,jmgc/swift