Second start fails when dbpath is specified

[warvariuc]

Using nose2 plugin with this config:

[unittest]
plugins = mongobox.nose2_plugin

[mongobox]
port = 27018
dbpath = /run/shm/mongobox

When I start the tests directory /run/shm/mongobox is created. But it's not removed when the server stops. mongobox.mongobox.MongoBox#stop:

        if self._db_path_is_temporary:
            shutil.rmtree(self.db_path)
            self.db_path = None

The directory is there:

$ du -sh /run/shm/mongobox
65M     /run/shm/mongobox

When I start the tests second time:

  File "/home/vic/projects/venv/brain2/local/lib/python2.7/site-packages/mongobox/nose2_plugin.py", line 62, in pluginsLoaded
    self.mongobox.start()
  File "/home/vic/projects/venv/brain2/local/lib/python2.7/site-packages/mongobox/mongobox.py", line 89, in start
    return self._wait_till_started()
  File "/home/vic/projects/venv/brain2/local/lib/python2.7/site-packages/mongobox/mongobox.py", line 134, in _wait_till_started
    self.stop()
  File "/home/vic/projects/venv/brain2/local/lib/python2.7/site-packages/mongobox/mongobox.py", line 100, in stop
    os.kill(self.process.pid, 9)
OSError: [Errno 3] No such process

Looks like because the directory was not removed it thinks that the server is still running.

Am I supposed to remove the directory manually?