def METHOD_NAME():
    """ stacking parallel devices not allowed """
    name = f'ckt_{get_test_id()}'
    netlist = textwrap.dedent(f"""\
    .subckt {name} d g s vssx
    mn01 d g i vssx n w=360e-9 m=1 nf=2
    mn02 i g s vssx n w=360e-9 m=1 nf=2
    .ends {name}
    .END
    """)
    constraints = [{"constraint": "ConfigureCompiler", "auto_constraint": False, "propagate": True}]
    example = build_example(name, netlist, constraints)
    with pytest.raises(AssertionError):
        run_example(example, cleanup=False, n=1, additional_args=['--flow_stop', '2_primitives'])