code: function jobBuildNotFoundError(name, buildNumber) {
    return function (result, cb) {
      cb(new Error(text.__('Job %s build %d does not exist', name, buildNumber)));
    };
  }
docs: Create a 'job or build not found' error handler function.
  
  @param {String} name: the job name
  @param {Number} buildNumber: the job's build number
  @return a handler function