{"action":"created","issue":{"url":"https://api.github.com/repos/jupyter/dockerspawner/issues/37","labels_url":"https://api.github.com/repos/jupyter/dockerspawner/issues/37/labels{/name}","comments_url":"https://api.github.com/repos/jupyter/dockerspawner/issues/37/comments","events_url":"https://api.github.com/repos/jupyter/dockerspawner/issues/37/events","html_url":"https://github.com/jupyter/dockerspawner/issues/37","id":92745920,"number":37,"title":"No Attribute _cross_validation_lock","user":{"login":"pulkitag","id":4511686,"avatar_url":"https://avatars.githubusercontent.com/u/4511686?v=3","gravatar_id":"","url":"https://api.github.com/users/pulkitag","html_url":"https://github.com/pulkitag","followers_url":"https://api.github.com/users/pulkitag/followers","following_url":"https://api.github.com/users/pulkitag/following{/other_user}","gists_url":"https://api.github.com/users/pulkitag/gists{/gist_id}","starred_url":"https://api.github.com/users/pulkitag/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pulkitag/subscriptions","organizations_url":"https://api.github.com/users/pulkitag/orgs","repos_url":"https://api.github.com/users/pulkitag/repos","events_url":"https://api.github.com/users/pulkitag/events{/privacy}","received_events_url":"https://api.github.com/users/pulkitag/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":4,"created_at":"2015-07-02T22:08:06Z","updated_at":"2015-07-02T22:25:20Z","closed_at":null,"body":"I am trying to launch JupyterHub with the Github Authenticator and I am running into the following issue. Any suggestions as to what might be causing this? \r\n\r\nTraceback (most recent call last):\r\n      File \"/path/to/dir/jupyterhub/jupyterhub/app.py\", line 1063, in launch_instance_async\r\n        yield self.initialize(argv)\r\n      File \"/path/to/dir/jupyterhub/jupyterhub/app.py\", line 882, in initialize\r\n        yield self.init_spawners()\r\n      File \"/path/to/dir/jupyterhub/jupyterhub/app.py\", line 682, in init_spawners\r\n        user=user, hub=self.hub, config=self.config, db=self.db,\r\n      File \"/path/to/dir/jupyterhub/jupyterhub/spawner.py\", line 114, in __init__\r\n        self.load_state(self.user.state)\r\n      File \"/usr/local/lib/python3.4/dist-packages/dockerspawner/dockerspawner.py\", line 165, in load_state\r\n        self.container_id = state.get('container_id', '')\r\n      File \"/usr/local/lib/python3.4/dist-packages/src/traitlets/traitlets/traitlets.py\", line 450, in __set__\r\n        new_value = self._validate(obj, value)\r\n      File \"/usr/local/lib/python3.4/dist-packages/src/traitlets/traitlets/traitlets.py\", line 472, in _validate\r\n        if obj._cross_validation_lock is False:\r\n    AttributeError: 'DockerSpawner' object has no attribute '_cross_validation_lock'\r\n    \r\n"},"comment":{"url":"https://api.github.com/repos/jupyter/dockerspawner/issues/comments/118184202","html_url":"https://github.com/jupyter/dockerspawner/issues/37#issuecomment-118184202","issue_url":"https://api.github.com/repos/jupyter/dockerspawner/issues/37","id":118184202,"user":{"login":"pulkitag","id":4511686,"avatar_url":"https://avatars.githubusercontent.com/u/4511686?v=3","gravatar_id":"","url":"https://api.github.com/users/pulkitag","html_url":"https://github.com/pulkitag","followers_url":"https://api.github.com/users/pulkitag/followers","following_url":"https://api.github.com/users/pulkitag/following{/other_user}","gists_url":"https://api.github.com/users/pulkitag/gists{/gist_id}","starred_url":"https://api.github.com/users/pulkitag/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pulkitag/subscriptions","organizations_url":"https://api.github.com/users/pulkitag/orgs","repos_url":"https://api.github.com/users/pulkitag/repos","events_url":"https://api.github.com/users/pulkitag/events{/privacy}","received_events_url":"https://api.github.com/users/pulkitag/received_events","type":"User","site_admin":false},"created_at":"2015-07-02T22:25:19Z","updated_at":"2015-07-02T22:25:19Z","body":"The relevant outputs are:\r\n\r\ndockerspawner (0.0.1-dev)\r\njupyterhub (0.2.0.dev, /path/to/dir/jupyterhub)\r\n\r\nWould you like to know the status of any other packages also? \r\n\r\n"}}