# Pastebin KC27O8lN
[--:--:--][][] BUG     autotools element at core-deps/gnome-autoar.bst [line 1 column 0]: Missing artifact ????????

    Traceback (most recent call last):
      File "/usr/bin/bst", line 8, in <module>
        sys.exit(cli())
      File "/usr/lib/python3.7/site-packages/click/core.py", line 763, in __call__
        return self.main(*args, **kwargs)
      File "/usr/lib/python3.7/site-packages/buildstream/_frontend/cli.py", line 162, in override_main
        standalone_mode=standalone_mode, **extra)
      File "/usr/lib/python3.7/site-packages/click/core.py", line 716, in main
        rv = self.invoke(ctx)
      File "/usr/lib/python3.7/site-packages/click/core.py", line 1136, in invoke
        return _process_result(sub_ctx.command.invoke(sub_ctx))
      File "/usr/lib/python3.7/site-packages/click/core.py", line 955, in invoke
        return ctx.invoke(self.callback, **ctx.params)
      File "/usr/lib/python3.7/site-packages/click/core.py", line 554, in invoke
        return callback(*args, **kwargs)
      File "/usr/lib/python3.7/site-packages/click/decorators.py", line 27, in new_func
        return f(get_current_context().obj, *args, **kwargs)
      File "/usr/lib/python3.7/site-packages/buildstream/_frontend/cli.py", line 662, in checkout
        tar=tar)
      File "/usr/lib/python3.7/site-packages/buildstream/_stream.py", line 409, in checkout
        integrate=integrate) as sandbox:
      File "/usr/lib64/python3.7/contextlib.py", line 112, in __enter__
        return next(self.gen)
      File "/usr/lib/python3.7/site-packages/buildstream/element.py", line 1299, in _prepare_sandbox
        self.stage_dependency_artifacts(sandbox, dependency_scope)
      File "/usr/lib/python3.7/site-packages/buildstream/element.py", line 699, in stage_dependency_artifacts
        dep.__assert_cached()
      File "/usr/lib/python3.7/site-packages/buildstream/element.py", line 2000, in __assert_cached
        assert self._cached(), "{}: Missing artifact {}".format(self, self._get_brief_display_key())
    AssertionError: autotools element at core-deps/gnome-autoar.bst [line 1 column 0]: Missing artifact ????????