function toNotContainAny(log, keys) {
    return Array.isArray(log) && Array.isArray(keys) &&
      keys.every(function(key) {
        return log.indexOf(key) === -1;
      });
  }
@param {Array} log - `traceLog.log`.
@param {string[]} keys - Each key is `'<setOptions>', '<position>'`.
@returns {boolean} `true` if all `keys` are not contained.