Labgrid Exporter crashes on disconnect

[Emantor]

On one of our computers the exporter crashes if it disconnects from the coordinator, logfiles below.

2017-06-20T09:57:05 Task was destroyed but it is pending!
task: <Task pending coro=<onDisconnect() running at /opt/venv/python3.4-x86_64/lib/python3.4/site-packages/labgrid-0.1.1.dev5_ng4b0922bc2f15-py3.4.egg/labgrid/remote/exporter.py:246> cb=[add_callbacks.<locals>.done() at /opt/venv/python3.4-x86_64/lib/python3.4/site-packages/txaio/aio.py:383]>
Exception ignored in: Exception ignored in: Exception ignored in: Exception ignored in: Exception ignored in: Exception ignored in: Exception ignored in:
Starting Exports devices on this host for the labgrid infrastructure...
Started Exports devices on this host for the labgrid infrastructure.
SessionDetails(realm=<realm1>, session=6410032928824258, authid=<exporter/adelgunde>, authrole=<public>, authmethod=ticket, authprovider=dynamic, authextra=None, resumed=None, resumable=None, resume_token=None)