anchor.diff:      platformArgs: platformArgs
     );
   
  +  if (!result.started) {
  +    await command._deviceLogSubscription.cancel();
  +  }
  +
     return result.started ? 0 : 2;
   }
   
  
positive.code:   printTrace('Stopping application.');
    ApplicationPackage package = command.applicationPackages.getPackageForPlatform(command.device.platform);
    bool stopped = await command.device.stopApp(package);
    return stopped ? 0 : 1;
  }
  
negative.code:     platformArgs['trace-startup'] = command.traceStartup;
  
    printTrace('Starting application.');
  
    // Forward device log messages to the terminal window running the "drive" command.
    command._deviceLogSubscription = command.device.logReader.logLines.listen(printStatus);
  
    LaunchResult result = await command.device.startApp(
      package,
      command.getBuildMode(),
  