renames the log to ensure we get no clashes on the server
        subclass this to change the path etc

def _uniquename(self, log):
        '''
        renames the log to ensure we get no clashes on the server
        subclass this to change the path etc'''
        return '{hostname} - {time}.log'.format(
                                hostname=os.getenv('USERNAME'),
                                time=strftime("%a, %d %b %Y %H-%M-%S", gmtime()))