python版本：2.7
现象：
运行scrapy的过程中，突然之间停止，且没有任何报错，日志显示如下，请问哪位高人帮忙看看为何停止了，遇到这类问题该如何定位：谢谢！
……前面略
2017-01-23 13:42:39 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4720106
2017-01-23 13:42:39 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4720094
2017-01-23 13:42:39 [scrapy] DEBUG: Crawled (200) <GET http://nocutnews.co.kr/news/list?c1=254&c2=259> (referer: None)
2017-01-23 13:42:40 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:60033/wd/hub/session {"requiredCapabilities": {}, "desiredCapabilities": {"platform": "ANY", "browserName": "phantomjs", "version": "", "javascriptEnabled": true}}
2017-01-23 13:42:40 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-01-23 13:42:40 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:60033/wd/hub/session/c13fd4f0-e12e-11e6-a80e-87e393dbd863/url {"url": "http://nocutnews.co.kr/news/list?c1=254&c2=259", "sessionId": "c13fd4f0-e12e-11e6-a80e-87e393dbd863"}
2017-01-23 13:42:46 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-01-23 13:42:46 [selenium.webdriver.remote.remote_connection] DEBUG: GET http://127.0.0.1:60033/wd/hub/session/c13fd4f0-e12e-11e6-a80e-87e393dbd863/source {"sessionId": "c13fd4f0-e12e-11e6-a80e-87e393dbd863"}
2017-01-23 13:42:46 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-01-23 13:42:46 [selenium.webdriver.remote.remote_connection] DEBUG: DELETE http://127.0.0.1:60033/wd/hub/session/c13fd4f0-e12e-11e6-a80e-87e393dbd863 {"sessionId": "c13fd4f0-e12e-11e6-a80e-87e393dbd863"}
2017-01-23 13:42:46 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-01-23 13:42:46 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4708177
2017-01-23 13:42:47 [scrapy] DEBUG: Crawled (200) <GET http://nocutnews.co.kr/news/list?c1=254&c2=260> (referer: None)
2017-01-23 13:42:48 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:60119/wd/hub/session {"requiredCapabilities": {}, "desiredCapabilities": {"platform": "ANY", "browserName": "phantomjs", "version": "", "javascriptEnabled": true}}
2017-01-23 13:42:48 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-01-23 13:42:48 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:60119/wd/hub/session/c5b49430-e12e-11e6-a4d5-e100c4c26ce4/url {"url": "http://nocutnews.co.kr/news/list?c1=254&c2=260", "sessionId": "c5b49430-e12e-11e6-a4d5-e100c4c26ce4"}
2017-01-23 13:43:51 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-01-23 13:43:51 [selenium.webdriver.remote.remote_connection] DEBUG: GET http://127.0.0.1:60119/wd/hub/session/c5b49430-e12e-11e6-a4d5-e100c4c26ce4/source {"sessionId": "c5b49430-e12e-11e6-a4d5-e100c4c26ce4"}
2017-01-23 13:43:51 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-01-23 13:43:51 [selenium.webdriver.remote.remote_connection] DEBUG: DELETE http://127.0.0.1:60119/wd/hub/session/c5b49430-e12e-11e6-a4d5-e100c4c26ce4 {"sessionId": "c5b49430-e12e-11e6-a4d5-e100c4c26ce4"}
2017-01-23 13:43:51 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-01-23 13:43:51 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4722146
2017-01-23 13:43:51 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4721697
2017-01-23 13:43:51 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4721446
2017-01-23 13:43:51 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4721364
2017-01-23 13:43:51 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4718899
2017-01-23 13:43:51 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4716210
2017-01-23 13:43:51 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4715884
2017-01-23 13:43:51 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4715666
2017-01-23 13:43:51 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4715796
2017-01-23 13:43:51 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4715192
2017-01-23 13:43:51 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4712395
2017-01-23 13:43:51 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4711118
2017-01-23 13:43:51 [root] DEBUG: bloomfilter follow link = http://nocutnews.co.kr/news/4710328
2017-01-23 13:43:51 [scrapy] INFO: Crawled 434 pages (at 3 pages/min), scraped 390 items (at 0 items/min)
2017-01-23 13:43:52 [scrapy] DEBUG: Crawled (200) <GET http://nocutnews.co.kr/news/list?c1=282> (referer: None)
2017-01-23 13:43:54 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:60210/wd/hub/session {"requiredCapabilities": {}, "desiredCapabilities": {"platform": "ANY", "browserName": "phantomjs", "version": "", "javascriptEnabled": true}}
2017-01-23 13:43:54 [selenium.webdriver.remote.remote_connection] DEBUG: Finished Request
2017-01-23 13:43:54 [selenium.webdriver.remote.remote_connection] DEBUG: POST http://127.0.0.1:60210/wd/hub/session/ed09b380-e12e-11e6-ba50-b128e0b318bc/url {"url": "http://nocutnews.co.kr/news/list?c1=282", "sessionId": "ed09b380-e12e-11e6-ba50-b128e0b318bc"}
