Fix an incorrect regex that matched more than it should
Fix an incorrect regex that matched more than it should

For example, the first regex matched the following text incorrectly (the `-filelist` argument matched until the first open double-quote in `"BUILD_DIR/\$(CONFIGURATION)...`).

````
BUILD_DIR/Debug/bin/swift -frontend -c -filelist /var/folders/.../sources-098836 -primary-filelist /var/folders/.../primaryInputs-b8aa5a -supplementary-output-file-map /var/folders/.../supplementaryOutputs-b1a037 -target x86_64-apple-macosx10.9 -enable-objc-interop -module-cache-path "BUILD_DIR/\$(CONFIGURATION)\$(EFFECTIVE_PLATFORM_NAME)/swift-test-results/x86_64-apple-macosx10.9/clang-module-cache" -swift-version 4 -module-name main -output-filelist /var/folders/.../outputs-c97286
````

Also removes unused variables.
amraboelela/swift,glessard/swift,airspeedswift/swift,hooman/swift,JGiola/swift,danielmartin/swift,roambotics/swift,harlanhaskins/swift,devincoughlin/swift,rudkx/swift,austinzheng/swift,gribozavr/swift,hooman/swift,practicalswift/swift,parkera/swift,amraboelela/swift,xedin/swift,austinzheng/swift,jckarter/swift,stephentyrone/swift,shahmishal/swift,ahoppen/swift,harlanhaskins/swift,apple/swift,devincoughlin/swift,gregomni/swift,austinzheng/swift,danielmartin/swift,roambotics/swift,karwa/swift,CodaFi/swift,austinzheng/swift,sschiau/swift,karwa/swift,aschwaighofer/swift,apple/swift,stephentyrone/swift,jmgc/swift,roambotics/swift,parkera/swift,gregomni/swift,sschiau/swift,jmgc/swift,aschwaighofer/swift,karwa/swift,devincoughlin/swift,nathawes/swift,allevato/swift,glessard/swift,harlanhaskins/swift,nathawes/swift,hooman/swift,airspeedswift/swift,tkremenek/swift,benlangmuir/swift,gregomni/swift,karwa/swift,airspeedswift/swift,allevato/swift,benlangmuir/swift,aschwaighofer/swift,practicalswift/swift,shahmishal/swift,CodaFi/swift,ahoppen/swift,amraboelela/swift,gregomni/swift,gribozavr/swift,nathawes/swift,stephentyrone/swift,harlanhaskins/swift,xedin/swift,tkremenek/swift,JGiola/swift,rudkx/swift,lorentey/swift,danielmartin/swift,ahoppen/swift,karwa/swift,xedin/swift,xedin/swift,parkera/swift,jckarter/swift,apple/swift,apple/swift,danielmartin/swift,JGiola/swift,devincoughlin/swift,benlangmuir/swift,danielmartin/swift,stephentyrone/swift,gribozavr/swift,xedin/swift,apple/swift,harlanhaskins/swift,hooman/swift,shahmishal/swift,shajrawi/swift,lorentey/swift,practicalswift/swift,roambotics/swift,shajrawi/swift,xwu/swift,CodaFi/swift,shahmishal/swift,gribozavr/swift,gregomni/swift,glessard/swift,xwu/swift,gribozavr/swift,JGiola/swift,atrick/swift,atrick/swift,aschwaighofer/swift,nathawes/swift,shajrawi/swift,parkera/swift,ahoppen/swift,aschwaighofer/swift,xedin/swift,stephentyrone/swift,practicalswift/swift,JGiola/swift,sschiau/swift,CodaFi/swift,practicalswift/swift,shajrawi/swift,shajrawi/swift,jmgc/swift,shahmishal/swift,jckarter/swift,austinzheng/swift,aschwaighofer/swift,karwa/swift,tkremenek/swift,shahmishal/swift,nathawes/swift,jmgc/swift,gribozavr/swift,rudkx/swift,devincoughlin/swift,practicalswift/swift,rudkx/swift,lorentey/swift,glessard/swift,lorentey/swift,jckarter/swift,devincoughlin/swift,shajrawi/swift,parkera/swift,benlangmuir/swift,harlanhaskins/swift,airspeedswift/swift,benlangmuir/swift,roambotics/swift,parkera/swift,amraboelela/swift,stephentyrone/swift,lorentey/swift,harlanhaskins/swift,sschiau/swift,xedin/swift,aschwaighofer/swift,tkremenek/swift,nathawes/swift,allevato/swift,sschiau/swift,roambotics/swift,sschiau/swift,devincoughlin/swift,parkera/swift,tkremenek/swift,karwa/swift,amraboelela/swift,tkremenek/swift,stephentyrone/swift,hooman/swift,CodaFi/swift,JGiola/swift,austinzheng/swift,allevato/swift,jckarter/swift,benlangmuir/swift,shajrawi/swift,shahmishal/swift,glessard/swift,xwu/swift,gribozavr/swift,amraboelela/swift,xwu/swift,ahoppen/swift,lorentey/swift,xwu/swift,karwa/swift,allevato/swift,atrick/swift,CodaFi/swift,allevato/swift,parkera/swift,sschiau/swift,apple/swift,sschiau/swift,glessard/swift,shahmishal/swift,airspeedswift/swift,xwu/swift,practicalswift/swift,airspeedswift/swift,danielmartin/swift,allevato/swift,hooman/swift,gribozavr/swift,atrick/swift,atrick/swift,jckarter/swift,jckarter/swift,lorentey/swift,practicalswift/swift,rudkx/swift,jmgc/swift,danielmartin/swift,ahoppen/swift,jmgc/swift,austinzheng/swift,amraboelela/swift,rudkx/swift,tkremenek/swift,gregomni/swift,airspeedswift/swift,lorentey/swift,hooman/swift,xedin/swift,jmgc/swift,shajrawi/swift,devincoughlin/swift,CodaFi/swift,atrick/swift,xwu/swift,nathawes/swift