Search anything from a bugzilla bug given a range of bug numbers

[root@centos my-data-set]# for ((i=13420;i<13500;i++)); do echo $i >> /tmp/search_result.txt; curl http://192.168.5.105/bugzilla/show_bug.cgi?id=$i | grep "passed to DE constructor may be null" >> /tmp/search_result.txt; done;