Python2ism left in worker.py
When trying to run a SPM snapshot, we crashed our test node. Upon further investigation we found that there was two instances of "iteritems" in worker.py (line 403 and 406 with version 1.4.3) that caused the crash.
See LHO alog for reference and log screenshot: https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=57595