Revert "Updated the playground transform's error handling. Specifically, we now report type-checking errors in added instrumentation to llvm::errs() and try to restore the ASTs to their former state."
Revert "Updated the playground transform's error handling. Specifically, we now report type-checking errors in added instrumentation to llvm::errs() and try to restore the ASTs to their former state."

This reverts commit r29798.

This commit was breaking the iOS bots.

Swift SVN r29800

brentdax/swift,OscarSwanros/swift,hooman/swift,gottesmm/swift,alblue/swift,jmgc/swift,deyton/swift,roambotics/swift,xedin/swift,djwbrown/swift,austinzheng/swift,tardieu/swift,frootloops/swift,ben-ng/swift,Ivacker/swift,therealbnut/swift,frootloops/swift,allevato/swift,dduan/swift,kstaring/swift,zisko/swift,frootloops/swift,tjw/swift,atrick/swift,nathawes/swift,danielmartin/swift,emilstahl/swift,adrfer/swift,ahoppen/swift,parkera/swift,deyton/swift,roambotics/swift,codestergit/swift,SwiftAndroid/swift,slavapestov/swift,natecook1000/swift,shajrawi/swift,CodaFi/swift,uasys/swift,rudkx/swift,SwiftAndroid/swift,sdulal/swift,danielmartin/swift,Jnosh/swift,harlanhaskins/swift,gregomni/swift,aschwaighofer/swift,apple/swift,LeoShimonaka/swift,return/swift,austinzheng/swift,karwa/swift,djwbrown/swift,zisko/swift,airspeedswift/swift,milseman/swift,kusl/swift,aschwaighofer/swift,sschiau/swift,amraboelela/swift,JGiola/swift,kstaring/swift,shahmishal/swift,cbrentharris/swift,zisko/swift,ahoppen/swift,mightydeveloper/swift,kperryua/swift,MukeshKumarS/Swift,felix91gr/swift,kstaring/swift,alblue/swift,shahmishal/swift,IngmarStein/swift,rudkx/swift,amraboelela/swift,airspeedswift/swift,shahmishal/swift,brentdax/swift,stephentyrone/swift,tkremenek/swift,alblue/swift,cbrentharris/swift,emilstahl/swift,harlanhaskins/swift,jopamer/swift,lorentey/swift,natecook1000/swift,gmilos/swift,CodaFi/swift,nathawes/swift,sschiau/swift,kentya6/swift,return/swift,JaSpa/swift,shajrawi/swift,gmilos/swift,jopamer/swift,karwa/swift,lorentey/swift,bitjammer/swift,bitjammer/swift,ben-ng/swift,felix91gr/swift,kstaring/swift,mightydeveloper/swift,glessard/swift,calebd/swift,tjw/swift,practicalswift/swift,felix91gr/swift,gmilos/swift,OscarSwanros/swift,Jnosh/swift,karwa/swift,xwu/swift,modocache/swift,benlangmuir/swift,austinzheng/swift,felix91gr/swift,kusl/swift,therealbnut/swift,Jnosh/swift,codestergit/swift,dduan/swift,milseman/swift,gribozavr/swift,kusl/swift,therealbnut/swift,tjw/swift,sschiau/swift,johnno1962d/swift,IngmarStein/swift,calebd/swift,danielmartin/swift,huonw/swift,MukeshKumarS/Swift,russbishop/swift,practicalswift/swift,KrishMunot/swift,jtbandes/swift,tardieu/swift,manavgabhawala/swift,tardieu/swift,shajrawi/swift,parkera/swift,atrick/swift,kusl/swift,ben-ng/swift,dduan/swift,slavapestov/swift,swiftix/swift.old,Ivacker/swift,ben-ng/swift,LeoShimonaka/swift,MukeshKumarS/Swift,jtbandes/swift,ken0nek/swift,airspeedswift/swift,nathawes/swift,aschwaighofer/swift,Ivacker/swift,shahmishal/swift,ken0nek/swift,apple/swift,slavapestov/swift,SwiftAndroid/swift,swiftix/swift,roambotics/swift,austinzheng/swift,brentdax/swift,djwbrown/swift,karwa/swift,sdulal/swift,zisko/swift,glessard/swift,aschwaighofer/swift,KrishMunot/swift,jmgc/swift,LeoShimonaka/swift,karwa/swift,CodaFi/swift,kusl/swift,xedin/swift,arvedviehweger/swift,jckarter/swift,ahoppen/swift,return/swift,arvedviehweger/swift,xwu/swift,modocache/swift,gottesmm/swift,natecook1000/swift,CodaFi/swift,MukeshKumarS/Swift,glessard/swift,harlanhaskins/swift,khizkhiz/swift,cbrentharris/swift,jtbandes/swift,harlanhaskins/swift,khizkhiz/swift,Jnosh/swift,djwbrown/swift,cbrentharris/swift,swiftix/swift,manavgabhawala/swift,apple/swift,sdulal/swift,swiftix/swift,xwu/swift,benlangmuir/swift,tkremenek/swift,therealbnut/swift,adrfer/swift,kentya6/swift,felix91gr/swift,amraboelela/swift,russbishop/swift,russbishop/swift,tardieu/swift,frootloops/swift,sdulal/swift,roambotics/swift,JGiola/swift,swiftix/swift,rudkx/swift,austinzheng/swift,devincoughlin/swift,mightydeveloper/swift,kusl/swift,stephentyrone/swift,ahoppen/swift,practicalswift/swift,gmilos/swift,johnno1962d/swift,benlangmuir/swift,lorentey/swift,calebd/swift,kperryua/swift,modocache/swift,arvedviehweger/swift,natecook1000/swift,milseman/swift,gmilos/swift,atrick/swift,jckarter/swift,KrishMunot/swift,milseman/swift,JaSpa/swift,slavapestov/swift,OscarSwanros/swift,calebd/swift,dduan/swift,benlangmuir/swift,airspeedswift/swift,parkera/swift,hughbe/swift,cbrentharris/swift,kstaring/swift,gribozavr/swift,atrick/swift,brentdax/swift,gribozavr/swift,codestergit/swift,tinysun212/swift-windows,practicalswift/swift,khizkhiz/swift,austinzheng/swift,djwbrown/swift,roambotics/swift,tkremenek/swift,kperryua/swift,aschwaighofer/swift,return/swift,allevato/swift,adrfer/swift,swiftix/swift,swiftix/swift.old,gottesmm/swift,apple/swift,gregomni/swift,swiftix/swift.old,atrick/swift,MukeshKumarS/Swift,slavapestov/swift,tkremenek/swift,emilstahl/swift,tjw/swift,sdulal/swift,tardieu/swift,hooman/swift,apple/swift,jopamer/swift,lorentey/swift,parkera/swift,ken0nek/swift,alblue/swift,LeoShimonaka/swift,rudkx/swift,kentya6/swift,shajrawi/swift,ken0nek/swift,gottesmm/swift,johnno1962d/swift,nathawes/swift,allevato/swift,KrishMunot/swift,sdulal/swift,kperryua/swift,CodaFi/swift,shajrawi/swift,dduan/swift,KrishMunot/swift,jmgc/swift,huonw/swift,karwa/swift,Ivacker/swift,danielmartin/swift,uasys/swift,manavgabhawala/swift,frootloops/swift,JaSpa/swift,slavapestov/swift,tjw/swift,practicalswift/swift,huonw/swift,ahoppen/swift,sschiau/swift,harlanhaskins/swift,gribozavr/swift,cbrentharris/swift,OscarSwanros/swift,uasys/swift,therealbnut/swift,JaSpa/swift,alblue/swift,tinysun212/swift-windows,natecook1000/swift,shajrawi/swift,danielmartin/swift,practicalswift/swift,IngmarStein/swift,xedin/swift,stephentyrone/swift,glessard/swift,Ivacker/swift,jckarter/swift,zisko/swift,return/swift,tinysun212/swift-windows,frootloops/swift,IngmarStein/swift,kperryua/swift,KrishMunot/swift,MukeshKumarS/Swift,modocache/swift,slavapestov/swift,bitjammer/swift,calebd/swift,kentya6/swift,zisko/swift,ben-ng/swift,shahmishal/swift,tjw/swift,parkera/swift,huonw/swift,codestergit/swift,shajrawi/swift,arvedviehweger/swift,mightydeveloper/swift,stephentyrone/swift,hooman/swift,xwu/swift,mightydeveloper/swift,tinysun212/swift-windows,gribozavr/swift,johnno1962d/swift,deyton/swift,bitjammer/swift,KrishMunot/swift,tinysun212/swift-windows,shahmishal/swift,jtbandes/swift,practicalswift/swift,swiftix/swift.old,adrfer/swift,natecook1000/swift,SwiftAndroid/swift,allevato/swift,gribozavr/swift,glessard/swift,LeoShimonaka/swift,adrfer/swift,deyton/swift,IngmarStein/swift,xedin/swift,ken0nek/swift,practicalswift/swift,amraboelela/swift,parkera/swift,modocache/swift,dreamsxin/swift,tkremenek/swift,manavgabhawala/swift,MukeshKumarS/Swift,CodaFi/swift,lorentey/swift,kusl/swift,karwa/swift,emilstahl/swift,johnno1962d/swift,kperryua/swift,ben-ng/swift,gottesmm/swift,xedin/swift,jckarter/swift,karwa/swift,sschiau/swift,gribozavr/swift,IngmarStein/swift,huonw/swift,alblue/swift,jckarter/swift,amraboelela/swift,brentdax/swift,devincoughlin/swift,brentdax/swift,dreamsxin/swift,stephentyrone/swift,mightydeveloper/swift,therealbnut/swift,zisko/swift,adrfer/swift,lorentey/swift,devincoughlin/swift,devincoughlin/swift,russbishop/swift,allevato/swift,airspeedswift/swift,apple/swift,JGiola/swift,SwiftAndroid/swift,adrfer/swift,austinzheng/swift,nathawes/swift,modocache/swift,bitjammer/swift,Jnosh/swift,allevato/swift,gottesmm/swift,hooman/swift,kentya6/swift,sschiau/swift,hooman/swift,hughbe/swift,lorentey/swift,johnno1962d/swift,JGiola/swift,tkremenek/swift,return/swift,jtbandes/swift,jopamer/swift,emilstahl/swift,lorentey/swift,hughbe/swift,harlanhaskins/swift,jtbandes/swift,tinysun212/swift-windows,stephentyrone/swift,kusl/swift,emilstahl/swift,swiftix/swift.old,huonw/swift,russbishop/swift,xwu/swift,bitjammer/swift,amraboelela/swift,SwiftAndroid/swift,gregomni/swift,kstaring/swift,return/swift,xedin/swift,hughbe/swift,LeoShimonaka/swift,gribozavr/swift,gmilos/swift,OscarSwanros/swift,huonw/swift,devincoughlin/swift,devincoughlin/swift,JaSpa/swift,nathawes/swift,danielmartin/swift,manavgabhawala/swift,felix91gr/swift,amraboelela/swift,JaSpa/swift,gregomni/swift,gottesmm/swift,xwu/swift,LeoShimonaka/swift,modocache/swift,deyton/swift,Jnosh/swift,emilstahl/swift,allevato/swift,stephentyrone/swift,manavgabhawala/swift,shajrawi/swift,johnno1962d/swift,airspeedswift/swift,xedin/swift,jmgc/swift,ben-ng/swift,jckarter/swift,aschwaighofer/swift,khizkhiz/swift,milseman/swift,codestergit/swift,tardieu/swift,Ivacker/swift,manavgabhawala/swift,arvedviehweger/swift,deyton/swift,kentya6/swift,Ivacker/swift,JGiola/swift,khizkhiz/swift,natecook1000/swift,tinysun212/swift-windows,codestergit/swift,arvedviehweger/swift,calebd/swift,shahmishal/swift,emilstahl/swift,devincoughlin/swift,ken0nek/swift,swiftix/swift.old,tjw/swift,sschiau/swift,arvedviehweger/swift,hughbe/swift,kentya6/swift,mightydeveloper/swift,jmgc/swift,uasys/swift,djwbrown/swift,xwu/swift,xedin/swift,jopamer/swift,russbishop/swift,cbrentharris/swift,kstaring/swift,benlangmuir/swift,JaSpa/swift,alblue/swift,Ivacker/swift,hooman/swift,roambotics/swift,brentdax/swift,IngmarStein/swift,uasys/swift,benlangmuir/swift,devincoughlin/swift,shahmishal/swift,hooman/swift,milseman/swift,OscarSwanros/swift,OscarSwanros/swift,swiftix/swift.old,kperryua/swift,swiftix/swift.old,airspeedswift/swift,mightydeveloper/swift,nathawes/swift,codestergit/swift,danielmartin/swift,gregomni/swift,sdulal/swift,cbrentharris/swift,uasys/swift,LeoShimonaka/swift,therealbnut/swift,ken0nek/swift,tkremenek/swift,dduan/swift,khizkhiz/swift,jmgc/swift,SwiftAndroid/swift,ahoppen/swift,kentya6/swift,jckarter/swift,bitjammer/swift,milseman/swift,jtbandes/swift,sdulal/swift,jopamer/swift,sschiau/swift,hughbe/swift,rudkx/swift,parkera/swift,swiftix/swift,aschwaighofer/swift,djwbrown/swift,jopamer/swift,Jnosh/swift,uasys/swift,frootloops/swift,deyton/swift,JGiola/swift,swiftix/swift,CodaFi/swift,harlanhaskins/swift,gmilos/swift,jmgc/swift,felix91gr/swift,calebd/swift,khizkhiz/swift,glessard/swift,rudkx/swift,tardieu/swift,atrick/swift,hughbe/swift,parkera/swift,russbishop/swift,dduan/swift,gregomni/swift