# -*- coding: utf-8 -*-
import scrapy


class HackernewsScrapyItem(scrapy.Item):
    title = scrapy.Field()
    crawled_at = scrapy.Field()

@@ -109,18 +109,11 @@
     
-crawled_at
+url
  = s

Add url field to HackernewsScrapyItem and remove "crawled_at"