anchor.diff:  
       final String deviceListOutput = deviceListResult.stdout as String;
       if (!deviceListOutput.contains(device)) {
  +      print(deviceListOutput);
         throw Exception('Mac does not have the requested device type $device '
  -          'available for simulators. Please use XCode to install.');
  +          'available for simulators. Please use Xcode to install.');
       }
   
       // Prepate device type argument. It should look like:
  
positive.code: 
      final int indexOfPhone = listOfPhones.indexOf(phone);
      if (indexOfPhone == -1) {
        throw Exception('Simulator of $phone is not available for iOS version '
            '${osMajorVersion}.${osMinorVersion}');
      }
  
negative.code:         output.contains('-- iOS ${osMajorVersion}.${osMinorVersion} --');
  
      if (!versionCheck) {
        print(output);
        throw Exception(
            'Requested simulator version iOS ${osMajorVersion}.${osMinorVersion} '
            'is not available.');
  