Make sure we handle Overflow exceptions in time.mktime.

celery/worker/scheduler.py

@@ -37,7 +37,13 @@ class Scheduler(object):
 
         """
         if isinstance(eta, datetime):
-            eta = time.mktime(eta.timetuple())
+            try:
+                eta = time.mktime(eta.timetuple())
+            except OverflowError:
+                # this machine can't represent the passed in time as a unix timestamp
+                # just ignore this for now
+                self.logger.error("Cannot represent %s as a unix timestamp. Ignoring it." % eta)
+                return
         eta = eta or time.time()
         heapq.heappush(self._queue, (eta, priority, item, callback))