In XCode 8 beta, when I try to run on a real iPhone, I get the following error about libswiftCore.dylib not being signed.
Probing signature of /Users/bandrews/Library/Developer/Xcode/DerivedData/TrafficCenter-cfvwcmcbiqrplpcrduidiljyjhtg/Build/Products/Debug-iphoneos/TrafficCenter.app/Frameworks/libswiftCore.dylib
/usr/bin/codesign '-r-' '--display' '/Users/bandrews/Library/Developer/Xcode/DerivedData/TrafficCenter-cfvwcmcbiqrplpcrduidiljyjhtg/Build/Products/Debug-iphoneos/TrafficCenter.app/Frameworks/libswiftCore.dylib'
/Users/bandrews/Library/Developer/Xcode/DerivedData/TrafficCenter-cfvwcmcbiqrplpcrduidiljyjhtg/Build/Products/Debug-iphoneos/TrafficCenter.app/Frameworks/libswiftCore.dylib: code object is not signed at all
Codesigning /Users/bandrews/Library/Developer/Xcode/DerivedData/TrafficCenter-cfvwcmcbiqrplpcrduidiljyjhtg/Build/Products/Debug-iphoneos/TrafficCenter.app/Frameworks/libswiftCore.dylib
/usr/bin/codesign '--force' '--sign' '034AE1DDD50995992901A7030454BE7D048BB21B' '--verbose' '/Users/bandrews/Library/Developer/Xcode/DerivedData/TrafficCenter-cfvwcmcbiqrplpcrduidiljyjhtg/Build/Products/Debug-iphoneos/TrafficCenter.app/Frameworks/libswiftCore.dylib'
CSSM_SignData returned: 8001094A
/Users/bandrews/Library/Developer/Xcode/DerivedData/TrafficCenter-cfvwcmcbiqrplpcrduidiljyjhtg/Build/Products/Debug-iphoneos/TrafficCenter.app/Frameworks/libswiftCore.dylib: errSecInternalComponent
error: Task failed with exit 1 signal 0 {
/usr/bin/codesign '--force' '--sign' '034AE1DDD50995992901A7030454BE7D048BB21B' '--verbose' '/Users/bandrews/Library/Developer/Xcode/DerivedData/TrafficCenter-cfvwcmcbiqrplpcrduidiljyjhtg/Build/Products/Debug-iphoneos/TrafficCenter.app/Frameworks/libswiftCore.dylib'
I was able to run on my iphone previously, and all of a sudden it stopped working. I tried re-installing XCode 8 beta, but it didn't help.
Has anyone else seen this problem and know how to solve it?