Traceback (most recent call last):
  File "/mnt/home/ian/anaconda2/bin/cactus", line 11, in <module>
    load_entry_point('progressiveCactus', 'console_scripts', 'cactus')()
  File "/mnt/home/ian/cactus/src/cactus/progressive/cactus_progressive.py", line 449, in main
    halID = toil.restart()
  File "/mnt/home/ian/toil/src/toil/common.py", line 773, in restart
    return self._runMainLoop(rootJobGraph)
  File "/mnt/home/ian/toil/src/toil/common.py", line 1018, in _runMainLoop
    jobCache=self._jobCache).run()
  File "/mnt/home/ian/toil/src/toil/leader.py", line 197, in run
    self.innerLoop()
  File "/mnt/home/ian/toil/src/toil/leader.py", line 501, in innerLoop
    self.checkForDeadlocks()
  File "/mnt/home/ian/toil/src/toil/leader.py", line 518, in checkForDeadlocks
    totalRunningJobs = len(self.batchSystem.getRunningBatchJobIDs())
  File "/mnt/home/ian/toil/src/toil/batchSystems/abstractGridEngineBatchSystem.py", line 379, in getRunningBatchJobIDs
    batchIds = self.worker.getRunningJobIDs()
  File "/mnt/home/ian/toil/src/toil/batchSystems/hydra.py", line 37, in getRunningJobIDs
    currentjobs = dict((str(self.batchJobIDs[x][0]), x) for x in self.runningJobs)
RuntimeError: Set changed size during iteration