xcodebuild -project WebDriverAgent.xcodeproj -scheme WebDriverAgentRunner -destination 'id=<udid>' test IPHONEOS_DEPLOYMENT_TARGET=10.3
2017-01-24 09:02:18.358 xcodebuild[30385:339674] Error Domain=com.apple.platform.iphoneos Code=-12 "Unable to launch com.apple.test.WebDriverAgentRunner-Runner" UserInfo={NSLocalizedDescription=Unable to launch com.apple.test.WebDriverAgentRunner-Runner, NSUnderlyingError=0x7fa839cadc60 {Error Domain=DTXMessage Code=1 "(null)" UserInfo={DTXExceptionKey=The operation couldn't be completed. Unable to launch com.apple.test.WebDriverAgentRunner-Runner because it has an invalid code signature, inadequate entitlements or its profile has not been explicitly trusted by the user. : Failed to launch process with bundle identifier 'com.apple.test.WebDriverAgentRunner-Runner'}}} 2017-01-24 09:02:18.358 xcodebuild[30385:339674] Error Domain=IDETestOperationsObserverErrorDomain Code=5 "Early unexpected exit, operation never finished bootstrapping - no restart will be attempted" UserInfo={NSLocalizedDescription=Early unexpected exit, operation never finished bootstrapping - no restart will be attempted} Testing failed: Test target WebDriverAgentRunner encountered an error (Early unexpected exit, operation never finished bootstrapping - no restart will be attempted)The problem is that the developer is not trusted on the device. If you manually try to run the apps on the device, you will see an Untrusted Developer message.
To solve this issue on the device, go to iOS version. Then trust the developer and allow the apps to be run.
or , depending on the device type and the