anchor.diff:      return archiveContainer(appContainer, true).then((List<int> archivedData) {
         monitor.worked(3);
         return _sendTcpRequest(target, _buildPushRequest(target, archivedData));
  -    }).then((List<int> responseBytes) => _expectHttpOkResponse(responseBytes))
  -    .then((_) {
  +    }).then((List<int> responseBytes) => _expectHttpOkResponse(responseBytes)
  +    ).then((_) {
         monitor.worked(6);
         return _sendTcpRequest(target, _buildLaunchRequest(target));
       }).then((List<int> responseBytes) => _expectHttpOkResponse(responseBytes));
  
positive.code:  * A class to encapsulate deploying an application to a mobile device.
   */
  class MobileDeploy {
    static bool isAvailable() => chrome.usb.available;
  
    final Container appContainer;
  
negative.code:     String header =
          'POST /$path HTTP/1.1\r\n'
          'User-Agent: Spark IDE\r\n'
          'Host: ${target}:$DEPLOY_PORT\r\n';
      List<int> body = [];
  
      if (payload != null) {
  