Traceback (most recent call last):


 "<stdin>", line 1, in <module>


 "/opt/conda/lib/python3.7/site-packages/papermill/execute.py", line 104, in execute_notebook

**engine_kwargs


 "/opt/conda/lib/python3.7/site-packages/papermill/engines.py", line 49, in execute_notebook_with_engine

return self.get_engine(engine_name).execute_notebook(nb, kernel_name, **kwargs)


 "/opt/conda/lib/python3.7/site-packages/papermill/engines.py", line 343, in execute_notebook

cls.execute_managed_notebook(nb_man, kernel_name, log_output=log_output, **kwargs)


 "/opt/conda/lib/python3.7/site-packages/papermill/engines.py", line 402, in execute_managed_notebook

return PapermillNotebookClient(nb_man, **final_kwargs).execute()


 "/opt/conda/lib/python3.7/site-packages/papermill/clientwrap.py", line 36, in execute

with self.setup_kernel(**kwargs):


 "/opt/conda/lib/python3.7/contextlib.py", line 112, in __enter__

return next(self.gen)


 "/opt/conda/lib/python3.7/site-packages/nbclient/client.py", line 401, in setup_kernel

self.start_kernel_manager()


 "/opt/conda/lib/python3.7/site-packages/nbclient/client.py", line 328, in start_kernel_manager

self.km = self.kernel_manager_class(kernel_name=self.kernel_name, config=self.config)


 "/opt/conda/lib/python3.7/site-packages/traitlets/traitlets.py", line 556, in __get__

return self.get(obj, cls)


 "/opt/conda/lib/python3.7/site-packages/traitlets/traitlets.py", line 535, in get

value = self._validate(obj, dynamic_default())


 "/opt/conda/lib/python3.7/site-packages/nbclient/client.py", line 240, in _kernel_manager_class_default

from jupyter_client import AsyncKernelManager
ImportError: cannot import name 'AsyncKernelManager' from 'jupyter_client' (/opt/conda/lib/python3.7/site-packages/jupyter_client/__init__.py)

Traceback (most recent call last):


 "/usr/lib/python2.7/site-packages/nose/case.py", line 197, in runTest

self.test(*self.arg)
TypeError: test_parallel_timeout_fail() takes exactly 1 argument (0 given)
