project-create fails due to an IndexError

I'm on bionic and using mojo 0.5.1 installed from a snap on the edge channel.

The stacktrace below happens the first time I try to create a project. It successfully creates a container, and a subsequent call to project-new succeeds due to that.

I played around with pylxd to get the uid the same way that mojo does, and it returns an empty list instead of the config info when I tried it on a stopped container (the one that was created from mojo).

>>> client = pylxd.Client()
>>> container = client.containers.all()[6]
>>> container.name
u'c3upgrade-bionic'
>>> vsm = container.config['volatile.last_state.idmap']
>>> vsm
u'[]'
>>>

» mojo project-new $MOJO_PROJECT -s $MOJO_SERIES --container lxd
2019-10-23 10:02:42 [INFO] Checking c3upgrade project path at /home/codersquid/.local/share/mojo/c3upgrade ...
2019-10-23 10:02:42 [INFO] Checking c3upgrade project container at /home/codersquid/.local/share/mojo/c3upgrade/bionic ...
2019-10-23 10:02:42 [INFO] Not found, creating container
2019-10-23 10:02:42 [INFO] Using mojo container image mojo-ubuntu-bionic-amd64.
2019-10-23 10:02:42 [INFO] Launching container 'c3upgrade-bionic'
/snap/mojo/75/lib/python2.7/site-packages/pylxd/models/operation.py:79: UserWarning: Attempted to set unknown attribute "location" on instance of "Operation"
  .format(key, self.__class__.__name__))
/snap/mojo/75/lib/python2.7/site-packages/pylxd/models/_model.py:137: UserWarning: Attempted to set unknown attribute "type" on instance of "Container"
  key, self.__class__.__name__
2019-10-23 10:02:42 [INFO] Adding device mojo-project-series-root to LXC container c3upgrade-bionic
Traceback (most recent call last):
  File "/snap/mojo/75/bin/mojo-project-new", line 11, in <module>
    load_entry_point('mojo==0.5.1', 'console_scripts', 'mojo-project-new')()
  File "/snap/mojo/75/lib/python2.7/site-packages/mojo/project_new.py", line 39, in main
    cli.create_project(args)
  File "/snap/mojo/75/lib/python2.7/site-packages/mojo/cli.py", line 194, in create_project
    project.create()
  File "/snap/mojo/75/lib/python2.7/site-packages/mojo/project.py", line 229, in create
    self.container.create()
  File "/snap/mojo/75/lib/python2.7/site-packages/mojo/contain.py", line 309, in create
    self._setup_mount()
  File "/snap/mojo/75/lib/python2.7/site-packages/mojo/contain.py", line 227, in _setup_mount
    uid_in_container = self._container_uid_offset
  File "/snap/mojo/75/lib/python2.7/site-packages/mojo/contain.py", line 195, in _container_uid_offset
    return ast.literal_eval(vsm.replace('true', 'True').replace('false', 'False'))[0]["Hostid"]
IndexError: list index out of range
2019-10-23 10:02:42 [ERROR] Error calling external process
Traceback (most recent call last):
  File "/snap/mojo/75/lib/python2.7/site-packages/mojo/cli.py", line 627, in run_with_args
    args.func(args)
  File "/snap/mojo/75/lib/python2.7/site-packages/mojo/utils.py", line 305, in wrapped
    return method(*args, **kwargs)
  File "/snap/mojo/75/lib/python2.7/site-packages/mojo/cli.py", line 236, in call_project_new
    subprocess.check_call(cmd)
  File "/snap/mojo/75/usr/lib/python2.7/subprocess.py", line 541, in check_call
    raise CalledProcessError(retcode, cmd)
CalledProcessError: Command '('mojo-project-new', '--series', 'bionic', '--container', 'lxd', '--log_level', 'INFO', 'c3upgrade')' returned non-zero exit status 1