bin.name = "stdio-fixture" args = ["--unknown-argument"] status.code = 2 stdout = "" stderr = """ error: Found argument '--unknown-argument' which wasn't expected, or isn't valid in this context If you tried to supply `--unknown-argument` as a value rather than a flag, use `-- --unknown-argument` Usage: stdio-fixture[EXE] [OPTIONS] [COMMAND] For more information try --help """