How can i fix this warning: CoreSimulator is attempting to unload a stale CoreSimulatorService job

Question

I have a warning in my build log in teamcity. I\'ve updated Xcode on my CI-Server from 7.3.1 to 8. The step run successfully but I have this:

[Step 3/3] Startin         


        

Answer 1

Encountered the same issue and solved with the following steps:

1. Copy Xcode from the Applications folder to another location
2. Delete the copy left in Applications & make sure no copies of Xcode remain
3. Move the copy from step 1 back to the Applications folder
4. Restarted machine

It appears that some value is not being set, since Xcode is not being installed through the App store.

Answer 2

I had the same issue. I've to run both Xcode 7 (to build old version) and Xcode 8 (to build current develop branch) in my Jenkins server and I was having the issue all the time.

Solution:

launchctl remove com.apple.CoreSimulator.CoreSimulatorService || true

This happens because, even if you quit the simulator app, the service is still running. The above command is needed to remove the service called com.apple.CoreSimulator.CoreSimulatorService. The || true is to avoid failure when that service is not running.