$ poetry self:update --preview
Updating to 1.0.0b4
 - Downloading poetry-1.0.0b4-linux.tar.gz 100%

Poetry (1.0.0b4) is installed now. Great!

$ poetry

^CTraceback (most recent call last):
  File "/home/jabba/.poetry/bin/poetry", line 12, in <module>
    from poetry.console import main
  File "/home/jabba/.poetry/lib/poetry/console/__init__.py", line 1, in <module>
    from .application import Application
  File "/home/jabba/.poetry/lib/poetry/console/application.py", line 5, in <module>
    from .commands.about import AboutCommand
  File "/home/jabba/.poetry/lib/poetry/console/commands/__init__.py", line 4, in <module>
    from .check import CheckCommand
  File "/home/jabba/.poetry/lib/poetry/console/commands/check.py", line 1, in <module>
    from poetry.factory import Factory
  File "/home/jabba/.poetry/lib/poetry/factory.py", line 17, in <module>
    from .packages.dependency import Dependency
  File "/home/jabba/.poetry/lib/poetry/packages/__init__.py", line 7, in <module>
    from .dependency import Dependency
  File "/home/jabba/.poetry/lib/poetry/packages/dependency.py", line 10, in <module>
    from poetry.utils.helpers import canonicalize_name
  File "/home/jabba/.poetry/lib/poetry/utils/helpers.py", line 11, in <module>
    from keyring import delete_password
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/keyring/__init__.py", line 1, in <module>
    from .core import (
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/keyring/core.py", line 189, in <module>
    init_backend()
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/keyring/core.py", line 91, in init_backend
    keyrings = filter(limit, backend.get_all_keyring())
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/keyring/util/__init__.py", line 22, in wrapper
    func.always_returns = func(*args, **kwargs)
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/keyring/backend.py", line 204, in get_all_keyring
    return list(rings)
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/keyring/util/__init__.py", line 33, in suppress_exceptions
    for callable in callables:
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/keyring/util/properties.py", line 26, in __get__
    return self.fget.__get__(None, owner)()
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/keyring/backend.py", line 64, in viable
    cls.priority
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/keyring/util/properties.py", line 26, in __get__
    return self.fget.__get__(None, owner)()
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/keyring/backends/SecretService.py", line 41, in priority
    list(secretstorage.get_all_collections(bus))
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/secretstorage/collection.py", line 153, in get_all_collections
    for collection_path in service.get_property('Collections'):
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/secretstorage/util.py", line 65, in get_property
    (signature, value), = self.send_and_get_reply(msg)
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/secretstorage/util.py", line 47, in send_and_get_reply
    return self._connection.send_and_get_reply(msg)
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/jeepney/integrate/blocking.py", line 67, in send_and_get_reply
    self.recv_messages()
  File "/home/jabba/.poetry/lib/poetry/_vendor/py3.7/jeepney/integrate/blocking.py", line 55, in recv_messages
    b = self.sock.recv(4096)
KeyboardInterrupt