Open Radar

 
Summary:
Using xcodebuild 7.3 (Build version 7D175), I am now unable to run tests in certain situations.

My tests were executing fine with Xcode 7.2

When running the following command:

xcodebuild -scheme 'MMEcommSDK' -project 'MMEcommSDK/UAEcommSDK.xcodeproj' -destination 'platform=iOS Simulator,id=AB1B7477-BA8B-45C0-90EE-CD889E0D49A0' build test 

I get the following error along with a simulator that appears to never finish launching (it shows a black screen forever).

iPhoneSimulator: Timed out waiting 120 seconds for simulator to boot, current state is 1.

If I remove `build` from that command list, and run 

xcodebuild -scheme 'MMEcommSDK' -project 'MMEcommSDK/MMEcommSDK.xcodeproj' -destination 'platform=iOS Simulator,id=AB1B7477-BA8B-45C0-90EE-CD889E0D49A0' test 

The simulator correctly launches and my tests pass. Note that when this command finishes, the simulator is left open. I can then rerun the original `build test` command, and it passes.


I have attached a zip file containing a few logs:
- fastlane_console.log: The terminal output for running fastlane
- Simulator_Diagnostic_Log.log: The diagnostic log referenced in the fastlane output
- Xcodebuild.log: The raw log generated by xcodebuild.

I’ve been able to confirm the following:
* This is not a fastlane problem, since I can resort to running purely xcodebuild commands, and generate the failure
* This doesn’t happen on all of my machines, just a few.
* I can work around this issue for now by removing the build command
* The simulator UUID I’m passing into Xcode build is correct. (An iPhone 6s 9.3 Simulator)

There are other people reporting similar issues in this thread:
https://github.com/fastlane/fastlane/issues/3921