daniel@daydream:~$ snapcraft register test-dholbach-12345 -d
Registering test-dholbach-12345.
Starting new HTTPS connection (1): myapps.developer.ubuntu.com
"POST /dev/api/register-name/ HTTP/1.1" 401 None
Traceback (most recent call last):
  File "/usr/bin/snapcraft", line 31, in <module>
    snapcraft.main.main()
  File "/usr/lib/python3/dist-packages/snapcraft/main.py", line 210, in main
    return run(args, project_options)
  File "/usr/lib/python3/dist-packages/snapcraft/main.py", line 253, in run
    _run_store_command(args)
  File "/usr/lib/python3/dist-packages/snapcraft/main.py", line 287, in _run_store_command
    snapcraft.register(args['<snap-name>'])
  File "/usr/lib/python3/dist-packages/snapcraft/_store.py", line 80, in register
    store.register(snap_name)
  File "/usr/lib/python3/dist-packages/snapcraft/storeapi/__init__.py", line 149, in register
    self.sca.register(snap_name, constants.DEFAULT_SERIES)
  File "/usr/lib/python3/dist-packages/snapcraft/storeapi/__init__.py", line 319, in register
    raise errors.StoreRegistrationError(snap_name, response)
snapcraft.storeapi.errors.StoreRegistrationError: Registration failed.
daniel@daydream:~$