xcodebuild(もしくはxctool)でテストを実行すると、以下の様なログでSimulatorの起動がタイムアウトする現象にでくわした。 run-test MyAppTests.xctest (iphonesimulator8.1, application-test) [Info] Installed 'jp.horimislime.MyApp'. (614 ms) [Info] Launching test host and running tests ... (0 ms) [Info] The simulator failed to start, or the TEST_HOST application failed to run. Simulator error: Simulator session timed out.; will retry 2 more times. (0