code: function _addFailure(attribute, rule, parameters) {
      _addError(attribute, rule, parameters);
      if (! _failedRules[attribute]) {
        _failedRules[attribute] = {};
      }
      _failedRules[attribute][rule] = parameters;
    }
docs: add a failure rule
  
  @param {String} attribute
  @param {String} rule
  @param {Array}  parameters
  
  @return {Void}