'Output debug information about the consumer versions.'

def report(self):

    format = (lambda versions: pprint.pformat(dict(versions), indent=4))
    debug_dict = {'pushed_versions': format(self._versions), 'consumer_versions': format(self._versions_by_consumer)}
    if (self.last_report != debug_dict):
        self.last_report = debug_dict
        LOG.debug('Tracked    resource    versions    report:\npushed    versions:\n%(pushed_versions)s\n\nconsumer    versions:\n%(consumer_versions)s\n', debug_dict)
