atc-test_1  | Traceback (most recent call last):
atc-test_1  |   File "/usr/local/lib/python3.6/site-packages/kombu/transport/base.py", line 123, in __getattr__
atc-test_1  |     return self[key]
atc-test_1  | KeyError: 'async'
atc-test_1  |
atc-test_1  | During handling of the above exception, another exception occurred:
atc-test_1  |
atc-test_1  | Traceback (most recent call last):
atc-test_1  |   File "/usr/local/lib/python3.6/runpy.py", line 193, in _run_module_as_main
atc-test_1  |     "__main__", mod_spec)
atc-test_1  |   File "/usr/local/lib/python3.6/runpy.py", line 85, in _run_code
atc-test_1  |     exec(code, run_globals)
atc-test_1  |   File "/srv/src/etour/ndn/atc/__main__.py", line 124, in <module>
atc-test_1  |     main()
atc-test_1  |   File "/srv/src/etour/ndn/atc/__main__.py", line 121, in main
atc-test_1  |     app.worker_main(argv)
atc-test_1  |   File "/usr/local/lib/python3.6/site-packages/celery/app/base.py", line 360, in worker_main
atc-test_1  |     ).execute_from_commandline(argv)
atc-test_1  |   File "/usr/local/lib/python3.6/site-packages/celery/bin/base.py", line 275, in execute_from_commandline
atc-test_1  |     return self.handle_argv(self.prog_name, argv[1:])
atc-test_1  |   File "/usr/local/lib/python3.6/site-packages/celery/bin/base.py", line 363, in handle_argv
atc-test_1  |     return self(*args, **options)
atc-test_1  |   File "/usr/local/lib/python3.6/site-packages/celery/bin/base.py", line 238, in __call__
atc-test_1  |     ret = self.run(*args, **kwargs)
atc-test_1  |   File "/usr/local/lib/python3.6/site-packages/celery/bin/worker.py", line 257, in run
atc-test_1  |     **kwargs)
atc-test_1  |   File "/usr/local/lib/python3.6/site-packages/celery/worker/worker.py", line 101, in __init__
atc-test_1  |     self.setup_instance(**self.prepare_args(**kwargs))
atc-test_1  |   File "/usr/local/lib/python3.6/site-packages/celery/worker/worker.py", line 124, in setup_instance
atc-test_1  |     self.should_use_eventloop() if use_eventloop is None
atc-test_1  |   File "/usr/local/lib/python3.6/site-packages/celery/worker/worker.py", line 243, in should_use_eventloop
atc-test_1  |     self._conninfo.transport.implements.async and
atc-test_1  |   File "/usr/local/lib/python3.6/site-packages/kombu/transport/base.py", line 125, in __getattr__
atc-test_1  |     raise AttributeError(key)
atc-test_1  | AttributeError: async