[GitHub] [buildstream] abderrahim commented on issue #1469: BUG when running bst shell --build

[GitBox <gi...@apache.org>]

abderrahim commented on issue #1469:
URL: https://github.com/apache/buildstream/issues/1469#issuecomment-805255464


   I just got a very similar error doing `bst artifact checkout`
   
   ```
   [21:55:11][        ][    main:core activity                 ] BUG     'NoneType' object has no attribute 'cached'
   
       Traceback (most recent call last):
         File "/home/abderrahim/.virtualenvs/bst-master/bin/bst", line 8, in <module>
           sys.exit(cli())
         File "/home/abderrahim/.virtualenvs/bst-master/lib/python3.9/site-packages/click/core.py", line 829, in __call__
           return self.main(*args, **kwargs)
         File "/home/abderrahim/.virtualenvs/bst-master/lib/python3.9/site-packages/buildstream/_frontend/cli.py", line 258, in override_main
           original_main(self, args=args, prog_name=prog_name, complete_var=None, standalone_mode=standalone_mode, **extra)
         File "/home/abderrahim/.virtualenvs/bst-master/lib/python3.9/site-packages/click/core.py", line 782, in main
           rv = self.invoke(ctx)
         File "/home/abderrahim/.virtualenvs/bst-master/lib/python3.9/site-packages/click/core.py", line 1259, in invoke
           return _process_result(sub_ctx.command.invoke(sub_ctx))
         File "/home/abderrahim/.virtualenvs/bst-master/lib/python3.9/site-packages/click/core.py", line 1259, in invoke
           return _process_result(sub_ctx.command.invoke(sub_ctx))
         File "/home/abderrahim/.virtualenvs/bst-master/lib/python3.9/site-packages/click/core.py", line 1066, in invoke
           return ctx.invoke(self.callback, **ctx.params)
         File "/home/abderrahim/.virtualenvs/bst-master/lib/python3.9/site-packages/click/core.py", line 610, in invoke
           return callback(*args, **kwargs)
         File "/home/abderrahim/.virtualenvs/bst-master/lib/python3.9/site-packages/click/decorators.py", line 33, in new_func
           return f(get_current_context().obj, *args, **kwargs)
         File "/home/abderrahim/.virtualenvs/bst-master/lib/python3.9/site-packages/buildstream/_frontend/cli.py", line 1374, in artifact_checkout
           app.stream.checkout(
         File "/home/abderrahim/.virtualenvs/bst-master/lib/python3.9/site-packages/buildstream/_stream.py", line 688, in checkout
           uncached_elts = [elt for elt in elements if not elt._cached()]
         File "/home/abderrahim/.virtualenvs/bst-master/lib/python3.9/site-packages/buildstream/_stream.py", line 688, in <listcomp>
           uncached_elts = [elt for elt in elements if not elt._cached()]
         File "/home/abderrahim/.virtualenvs/bst-master/lib/python3.9/site-packages/buildstream/element.py", line 1187, in _cached
           return self.__artifact.cached()
       AttributeError: 'NoneType' object has no attribute 'cached'
   ```


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