'function called when RSS failed except from 503
aborting load the source'

def _on_error_rss(self, failure, rss_feed):

    failure.trap(CancelledError, Error)
    self._logger.error('Aborting    load    on    :    %s.    Reason    :    %s.', rss_feed, failure.getErrorMessage())
    if ('503' in failure.getErrorMessage()):
        self.register_task((str(self.source) + '_load_delay'), reactor.callLater(10, self._load, rss_feed))
        return
    if (rss_feed in self.boosting_manager.boosting_sources):
        self.boosting_manager.set_enable_mining(rss_feed, False)
