Xcode Cloud UITests - Simulator won't launch

Our UITests are failing because Simulator won't start up. What can I do here?

Workflow Settings: Sequoia 15.1 Xcode 16.1 Testing on iPad and iPhone 17.5 simulators

Thank you in advance

Does the issue still occur?

We are having the same problem with our UI Tests. It happens about half the time lately and for the last few weeks. Common errors in the logs:

  • Simulator device failed to launch...
  • Failed to prepare device 'Clone 1 of iPhone 16' for impending launch. (Underlying Error: Unable to boot the Simulator. launchd failed to respond. (Underlying Error: Failed to start launchd_sim: could not bind to session, launchd_sim may have crashed or quit responding))
  • Test runner never began executing tests after launching
  • Early unexpected exit, operation never finished bootstrapping - no restart will be attempted. (Underlying Error: Test crashed with signal kill before starting test execution.)
Xcode Cloud UITests - Simulator won't launch
 
 
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