Doing a ^C on conjure-up gave me these 2 tracebacks:
$ conjure-up kubernetes
Exception in ev.run():
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/ubuntui/ev.py", line 83, in run
    cls.loop.run()
  File "/usr/lib/python3/dist-packages/urwid/main_loop.py", line 278, in run
    self._run()
  File "/usr/lib/python3/dist-packages/urwid/main_loop.py", line 376, in _run
    self.event_loop.run()
  File "/usr/lib/python3/dist-packages/urwid/main_loop.py", line 1326, in run
    self._loop.run_forever()
  File "/usr/lib/python3.5/asyncio/base_events.py", line 345, in run_forever
    self._run_once()
  File "/usr/lib/python3.5/asyncio/base_events.py", line 1312, in _run_once
    handle._run()
  File "/usr/lib/python3.5/asyncio/events.py", line 125, in _run
    self._callback(*self._args)
  File "/usr/lib/python3/dist-packages/conjureup/ui/views/deploystatus.py", line 31, in _refresh_nodes_on_main_thread
    status = model_status()
  File "/usr/lib/python3/dist-packages/conjureup/juju.py", line 37, in _decorator
    return f(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/conjureup/api/models.py", line 42, in model_status
    return juju.CLIENT.Client(request="FullStatus")
  File "/usr/lib/python3/dist-packages/macumba/v2.py", line 119, in _request
    'Params': params})
  File "/usr/lib/python3/dist-packages/macumba/v2.py", line 130, in call
    return self.receive(req_id, timeout)
  File "/usr/lib/python3/dist-packages/macumba/api.py", line 131, in receive
    time.sleep(0.1)
KeyboardInterrupt
Traceback (most recent call last):
  File "/usr/bin/conjure-up", line 9, in <module>
    load_entry_point('conjure-up==2.1.0', 'console_scripts', 'conjure-up')()
  File "/usr/lib/python3/dist-packages/conjureup/app.py", line 321, in main
    EventLoop.run()
  File "/usr/lib/python3/dist-packages/ubuntui/ev.py", line 83, in run
    cls.loop.run()
  File "/usr/lib/python3/dist-packages/urwid/main_loop.py", line 278, in run
    self._run()
  File "/usr/lib/python3/dist-packages/urwid/main_loop.py", line 376, in _run
    self.event_loop.run()
  File "/usr/lib/python3/dist-packages/urwid/main_loop.py", line 1326, in run
    self._loop.run_forever()
  File "/usr/lib/python3.5/asyncio/base_events.py", line 345, in run_forever
    self._run_once()
  File "/usr/lib/python3.5/asyncio/base_events.py", line 1312, in _run_once
    handle._run()
  File "/usr/lib/python3.5/asyncio/events.py", line 125, in _run
    self._callback(*self._args)
  File "/usr/lib/python3/dist-packages/conjureup/ui/views/deploystatus.py", line 31, in _refresh_nodes_on_main_thread
    status = model_status()
  File "/usr/lib/python3/dist-packages/conjureup/juju.py", line 37, in _decorator
    return f(*args, **kwargs)
  File "/usr/lib/python3/dist-packages/conjureup/api/models.py", line 42, in model_status
    return juju.CLIENT.Client(request="FullStatus")
  File "/usr/lib/python3/dist-packages/macumba/v2.py", line 119, in _request
    'Params': params})
  File "/usr/lib/python3/dist-packages/macumba/v2.py", line 130, in call
    return self.receive(req_id, timeout)
  File "/usr/lib/python3/dist-packages/macumba/api.py", line 131, in receive
    time.sleep(0.1)
KeyboardInterrupt