Fix bug where RQ 0.4 could not unpickle jobs from RQ 0.3.x.

rq/utils.py

@@ -180,7 +180,11 @@ def utcformat(dt):
 
 
 def utcparse(string):
-    return datetime.datetime.strptime(string, "%Y-%m-%dT%H:%M:%SZ")
+    try:
+        return datetime.datetime.strptime(string, '%Y-%m-%dT%H:%M:%SZ')
+    except ValueError:
+        # This catches RQ < 0.4 datetime format
+        return datetime.datetime.strptime(string, '%Y-%m-%dT%H:%M:%S.%f+00:00')
 
 
 def first(iterable, default=None, key=None):