'Only returns detailed messages in insecure_debug mode.'

def _build_message(self, message, **kwargs):

    if (message and CONF.insecure_debug):
        if isinstance(message, six.string_types):
            message = _format_with_unicode_kwargs(message, kwargs)
        return (_('%(message)s    %(amendment)s') % {'message': message, 'amendment': self.amendment})
    return _format_with_unicode_kwargs(self.message_format, kwargs)
