From aae96af8201dc9cde5283a65b71a7f532eb74518 Mon Sep 17 00:00:00 2001
From: Vostretsov Nikita <whalebot.helmsman@gmail.com>
Date: Fri, 7 Feb 2020 06:37:05 +0000
Subject: [PATCH] put crawl back

---
 scrapy/core/engine.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scrapy/core/engine.py b/scrapy/core/engine.py
index 6d68d0a27..9d7552774 100644
--- a/scrapy/core/engine.py
+++ b/scrapy/core/engine.py
@@ -123,7 +123,6 @@ class ExecutionEngine(object):
                 request = next(slot.start_requests)
                 if request == spider.WaitUntilQueueEmpty:
                     break
-                self.crawl(request, spider)
 
             except StopIteration:
                 slot.start_requests = None
@@ -131,6 +130,8 @@ class ExecutionEngine(object):
                 slot.start_requests = None
                 logger.error('Error while obtaining start requests',
                              exc_info=True, extra={'spider': spider})
+            else:
+                self.crawl(request, spider)
 
         while not self._needs_backout(spider):
             if not self._next_request_from_scheduler(spider):