ethereum/consensus simulator failure

[holiman]

These pops up:

INFO[11-23|10:04:13] message from simulator                   simulator=ethereum/consensus log="Failed to kill node Node[75de696d]@172.18.0.10: Traceback (most recent call last):\n  File \"/hivemodel.py\", line 247, in _startNodeAndRunTest\n    self.hive.killNode(node)\n  File \"/hivemodel.py\", line 137, in killNode\n    self._delete(\"/nodes/%s\" % node.nodeId)\n  File \"/hivemodel.py\", line 86, in _delete\n    raise Exception(\"Failed to DELETE req (%d)\" % req.status_code)\nException: Failed to DELETE req (404)\n"

Failed to kill node Node[75de696d]@172.18.0.10: 
Traceback (most recent call last):
 File \"/hivemodel.py\", line 247, in _startNodeAndRunTest
    self.hive.killNode(node)
  File \"/hivemodel.py\", line 137, in killNode
    self._delete(\"/nodes/%s\" % node.nodeId)
  File \"/hivemodel.py\", line 86, in _delete
    raise Exception(\"Failed to DELETE req (%d)\" % req.status_code)\nException: Failed to DELETE req (404)

So the framework is giving us a 404 on deletion