(pyqgis) Is there a way to disable the progress bar in the processing tool

When using processing tool in pyqgis and run, it always creates a progress bar. Is there a way to disable it?

processing.runalg('qgis:fixeddistancebuffer', _layer, distance_tolerance, 10, False, None)

I want to disable it because I get this error when I run my script in travis:

wrapped C/C++ object of type QProgressBar has been deleted See log for more details

RuntimeError: wrapped C/C++ object of type QProgressBar has been deleted

Answer

This works for me:

processing.runalg('qgis:fixeddistancebuffer', _layer, distance_tolerance, 10, False, None, progress=None)

Just add "progress = None" and you may be good to go

Update: I figured out that you can actually keep track of the process's progress using some kind of dummy progress object. Here's what I have:

class DummyProgress(object):
    def __init__(self):
        pass

    def error(self, er_msg):
        print er_msg

    def setPercentage(self, percent):
        print str(percent)


    def setText(self, text):
        print text

    def setCommand(self, comd):
        print comd

Instantiate an object from this class and pass it as argument to progress in your runalg and you will have everything that is happening printed to your console