Many tests fail on FreeBSD

[yurivict]

========================================================================================== FAILURES ==========================================================================================
___________________________________________________________________________________ test_collection_nbval ____________________________________________________________________________________

testdir = <Testdir local('/tmp/pytest-of-yuri/pytest-8/test_collection_nbval0')>

    def test_collection_nbval(testdir):
        # Write notebook to test dir
>       _write_nb(sources, os.path.join(str(testdir.tmpdir), 'test_collection.ipynb'))

/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/test_collect.py:44: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/test_collect.py:21: in _write_nb
    nb = _build_nb(sources)
/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/test_collect.py:14: in _build_nb
    nb = nbformat.v4.new_notebook()
/usr/local/lib/python3.9/site-packages/nbformat/v4/nbbase.py:170: in new_notebook
    validate(nb)
/usr/local/lib/python3.9/site-packages/nbformat/v4/nbbase.py:40: in validate
    return validate_orig(node, ref=ref, version=nbformat)
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:494: in validate
    for error in iter_validate(
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:612: in iter_validate
    validator = get_validator(version, version_minor, relax_add_props=relax_add_props)
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:65: in get_validator
    schema_json = _get_schema_json(v, version=version, version_minor=version_minor)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

v = <module 'nbformat.v4' from '/usr/local/lib/python3.9/site-packages/nbformat/v4/__init__.py'>, version = 4, version_minor = 5

    def _get_schema_json(v, version=None, version_minor=None):
        """
        Gets the json schema from a given imported library and nbformat version.
        """
        if (version, version_minor) in v.nbformat_schema:
            schema_path = os.path.join(
                os.path.dirname(v.__file__), v.nbformat_schema[(version, version_minor)]
            )
        elif version_minor > v.nbformat_minor:
            # load the latest schema
            schema_path = os.path.join(os.path.dirname(v.__file__), v.nbformat_schema[(None, None)])
        else:
            raise AttributeError("Cannot find appropriate nbformat schema file.")
>       with open(schema_path) as f:
E       FileNotFoundError: [Errno 2] No such file or directory: '/usr/local/lib/python3.9/site-packages/nbformat/v4/nbformat.v4.5.schema.json'

/usr/local/lib/python3.9/site-packages/nbformat/validator.py:104: FileNotFoundError
_________________________________________________________________________________ test_collection_nbval_lax __________________________________________________________________________________

testdir = <Testdir local('/tmp/pytest-of-yuri/pytest-8/test_collection_nbval_lax0')>

    def test_collection_nbval_lax(testdir):
        # Write notebook to test dir
>       _write_nb(sources, os.path.join(str(testdir.tmpdir), 'test_collection.ipynb'))

/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/test_collect.py:60: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/test_collect.py:21: in _write_nb
    nb = _build_nb(sources)
/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/test_collect.py:14: in _build_nb
    nb = nbformat.v4.new_notebook()
/usr/local/lib/python3.9/site-packages/nbformat/v4/nbbase.py:170: in new_notebook
    validate(nb)
/usr/local/lib/python3.9/site-packages/nbformat/v4/nbbase.py:40: in validate
    return validate_orig(node, ref=ref, version=nbformat)
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:494: in validate
    for error in iter_validate(
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:612: in iter_validate
    validator = get_validator(version, version_minor, relax_add_props=relax_add_props)
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:65: in get_validator
    schema_json = _get_schema_json(v, version=version, version_minor=version_minor)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

v = <module 'nbformat.v4' from '/usr/local/lib/python3.9/site-packages/nbformat/v4/__init__.py'>, version = 4, version_minor = 5

    def _get_schema_json(v, version=None, version_minor=None):
        """
        Gets the json schema from a given imported library and nbformat version.
        """
        if (version, version_minor) in v.nbformat_schema:
            schema_path = os.path.join(
                os.path.dirname(v.__file__), v.nbformat_schema[(version, version_minor)]
            )
        elif version_minor > v.nbformat_minor:
            # load the latest schema
            schema_path = os.path.join(os.path.dirname(v.__file__), v.nbformat_schema[(None, None)])
        else:
            raise AttributeError("Cannot find appropriate nbformat schema file.")
>       with open(schema_path) as f:
E       FileNotFoundError: [Errno 2] No such file or directory: '/usr/local/lib/python3.9/site-packages/nbformat/v4/nbformat.v4.5.schema.json'

/usr/local/lib/python3.9/site-packages/nbformat/validator.py:104: FileNotFoundError
_______________________________________________________________________________________ test_coverage ________________________________________________________________________________________

testdir = <Testdir local('/tmp/pytest-of-yuri/pytest-8/test_coverage0')>

    def test_coverage(testdir):

        testdir.makepyfile(
            # Setup file to cover:
            lib="""
                def mysum(a, b):
                    return a + b
                def myprod(a, b):
                    return a * b
            """,
            # Setup python file to cover mysum function
            test_lib="""
                import lib
                def test_sum():
                    assert lib.mysum(1, 3) == 4
                    assert lib.mysum("cat", "dog") == "catdog"
                    assert lib.mysum(1.5, 2) == 3.5
            """,
        )

        # Setup notebook to cover myprod function
>       nb = build_nb([
            "import lib",
            "lib.myprod(1, 3)",
            "lib.myprod(2.5, 2.5)",
            "lib.myprod(2, 'cat')"
        ], mark_run=True)

/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/test_coverage.py:35: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/utils.py:8: in build_nb
    nb = nbformat.v4.new_notebook()
/usr/local/lib/python3.9/site-packages/nbformat/v4/nbbase.py:170: in new_notebook
    validate(nb)
/usr/local/lib/python3.9/site-packages/nbformat/v4/nbbase.py:40: in validate
    return validate_orig(node, ref=ref, version=nbformat)
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:494: in validate
    for error in iter_validate(
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:612: in iter_validate
    validator = get_validator(version, version_minor, relax_add_props=relax_add_props)
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:65: in get_validator
    schema_json = _get_schema_json(v, version=version, version_minor=version_minor)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

v = <module 'nbformat.v4' from '/usr/local/lib/python3.9/site-packages/nbformat/v4/__init__.py'>, version = 4, version_minor = 5

    def _get_schema_json(v, version=None, version_minor=None):
        """
        Gets the json schema from a given imported library and nbformat version.
        """
        if (version, version_minor) in v.nbformat_schema:
            schema_path = os.path.join(
                os.path.dirname(v.__file__), v.nbformat_schema[(version, version_minor)]
            )
        elif version_minor > v.nbformat_minor:
            # load the latest schema
            schema_path = os.path.join(os.path.dirname(v.__file__), v.nbformat_schema[(None, None)])
        else:
            raise AttributeError("Cannot find appropriate nbformat schema file.")
>       with open(schema_path) as f:
E       FileNotFoundError: [Errno 2] No such file or directory: '/usr/local/lib/python3.9/site-packages/nbformat/v4/nbformat.v4.5.schema.json'

/usr/local/lib/python3.9/site-packages/nbformat/validator.py:104: FileNotFoundError
__________________________________________________________________________________ test_conf_ignore_stderr ___________________________________________________________________________________

testdir = <Testdir local('/tmp/pytest-of-yuri/pytest-8/test_conf_ignore_stderr0')>

    def test_conf_ignore_stderr(testdir):

        # Setup test config
        testdir.makeconftest(_ignore_stderr_code)

        # Setup notebook with stream outputs
>       nb = build_nb([
            "import sys",
            "sys.stdout.write('test\\n')",
            "sys.stderr.write('error output\\n')",
            "sys.stdout.write('test\\n')\nsys.stderr.write('error output\\n')",
        ], mark_run=True)

/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/test_ignore.py:24: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/utils.py:8: in build_nb
    nb = nbformat.v4.new_notebook()
/usr/local/lib/python3.9/site-packages/nbformat/v4/nbbase.py:170: in new_notebook
    validate(nb)
/usr/local/lib/python3.9/site-packages/nbformat/v4/nbbase.py:40: in validate
    return validate_orig(node, ref=ref, version=nbformat)
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:494: in validate
    for error in iter_validate(
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:612: in iter_validate
    validator = get_validator(version, version_minor, relax_add_props=relax_add_props)
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:65: in get_validator
    schema_json = _get_schema_json(v, version=version, version_minor=version_minor)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

v = <module 'nbformat.v4' from '/usr/local/lib/python3.9/site-packages/nbformat/v4/__init__.py'>, version = 4, version_minor = 5

    def _get_schema_json(v, version=None, version_minor=None):
        """
        Gets the json schema from a given imported library and nbformat version.
        """
        if (version, version_minor) in v.nbformat_schema:
            schema_path = os.path.join(
                os.path.dirname(v.__file__), v.nbformat_schema[(version, version_minor)]
            )
        elif version_minor > v.nbformat_minor:
            # load the latest schema
            schema_path = os.path.join(os.path.dirname(v.__file__), v.nbformat_schema[(None, None)])
        else:
            raise AttributeError("Cannot find appropriate nbformat schema file.")
>       with open(schema_path) as f:
E       FileNotFoundError: [Errno 2] No such file or directory: '/usr/local/lib/python3.9/site-packages/nbformat/v4/nbformat.v4.5.schema.json'

/usr/local/lib/python3.9/site-packages/nbformat/validator.py:104: FileNotFoundError
_______________________________________________________________________________________ test_timeouts ________________________________________________________________________________________

testdir = <Testdir local('/tmp/pytest-of-yuri/pytest-8/test_timeouts0')>

    def test_timeouts(testdir):
        # This test uses the testdir fixture from pytester, which is useful for
        # testing pytest plugins. It writes a notebook to a temporary dir
        # and then runs pytest.

        # Note: The test and the notebook are defined together in order to
        # emphasize the close dependence of the test on the structure and
        # content of the notebook

        # Setup notebook to test:
        sources = [
            # In [1]:
            "from time import sleep",
            # In [2]:
            "for i in range(100000):\n" +
            "    sleep(1)\n" +
            "myvar = 5",
            # In [3]:
            "a = 5",
            # In [4]:
            "print(myvar)",
            # In [5]:
            "import signal\n" +
            "signal.signal(signal.SIGINT, signal.SIG_IGN)\n" +
            "for i in range(1000):\n" +
            "    sleep(100)",
            # In [6]:
            "b = 5",
        ]
>       nb = build_nb(sources)

/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/test_timeouts.py:42: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/utils.py:8: in build_nb
    nb = nbformat.v4.new_notebook()
/usr/local/lib/python3.9/site-packages/nbformat/v4/nbbase.py:170: in new_notebook
    validate(nb)
/usr/local/lib/python3.9/site-packages/nbformat/v4/nbbase.py:40: in validate
    return validate_orig(node, ref=ref, version=nbformat)
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:494: in validate
    for error in iter_validate(
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:612: in iter_validate
    validator = get_validator(version, version_minor, relax_add_props=relax_add_props)
/usr/local/lib/python3.9/site-packages/nbformat/validator.py:65: in get_validator
    schema_json = _get_schema_json(v, version=version, version_minor=version_minor)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

v = <module 'nbformat.v4' from '/usr/local/lib/python3.9/site-packages/nbformat/v4/__init__.py'>, version = 4, version_minor = 5

    def _get_schema_json(v, version=None, version_minor=None):
        """
        Gets the json schema from a given imported library and nbformat version.
        """
        if (version, version_minor) in v.nbformat_schema:
            schema_path = os.path.join(
                os.path.dirname(v.__file__), v.nbformat_schema[(version, version_minor)]
            )
        elif version_minor > v.nbformat_minor:
            # load the latest schema
            schema_path = os.path.join(os.path.dirname(v.__file__), v.nbformat_schema[(None, None)])
        else:
            raise AttributeError("Cannot find appropriate nbformat schema file.")
>       with open(schema_path) as f:
E       FileNotFoundError: [Errno 2] No such file or directory: '/usr/local/lib/python3.9/site-packages/nbformat/v4/nbformat.v4.5.schema.json'

/usr/local/lib/python3.9/site-packages/nbformat/validator.py:104: FileNotFoundError
__________________________ test_print[/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/ipynb-test-samples/test-latex-pass-correctouput.ipynb] __________________________

filename = '/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/ipynb-test-samples/test-latex-pass-correctouput.ipynb', correctoutcome = 'pass'

    @pytest.mark.parametrize("filename, correctoutcome", testdata, ids=testnames)
    def test_print(filename, correctoutcome):

        command = ["py.test", "--nbval", "-v", "--current-env", filename]
        print("Starting parametrized test with filename={}, correctoutcome={}"
              .format(filename, correctoutcome))
        print("Command about to execute is '{}'".format(command))

        if os.name == 'nt':
            exitcode = subprocess.call(command, shell=True)
        else:
            exitcode = subprocess.call(command)

        if correctoutcome == 'pass':
            if exitcode != 0:
>               raise AssertionError("Tests failed on ipynb (expected pass)")
E               AssertionError: Tests failed on ipynb (expected pass)

tests/test_unit_tests_in_notebooks.py:68: AssertionError
------------------------------------------------------------------------------------ Captured stdout call ------------------------------------------------------------------------------------
Starting parametrized test with filename=/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/ipynb-test-samples/test-latex-pass-correctouput.ipynb, correctoutcome=pass
Command about to execute is '['py.test', '--nbval', '-v', '--current-env', '/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/ipynb-test-samples/test-latex-pass-correctouput.ipynb']'
------------------------------------------------------------------------------------ Captured stderr call ------------------------------------------------------------------------------------
ERROR: usage: py.test [options] [file_or_dir] [file_or_dir] [...]
py.test: error: unrecognized arguments: --nbval --current-env
  inifile: None
  rootdir: /disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6

______________________ test_print[/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/ipynb-test-samples/test-latex-pass-failsbutignoreoutput.ipynb] ______________________

filename = '/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/ipynb-test-samples/test-latex-pass-failsbutignoreoutput.ipynb', correctoutcome = 'pass'

    @pytest.mark.parametrize("filename, correctoutcome", testdata, ids=testnames)
    def test_print(filename, correctoutcome):

        command = ["py.test", "--nbval", "-v", "--current-env", filename]
        print("Starting parametrized test with filename={}, correctoutcome={}"
              .format(filename, correctoutcome))
        print("Command about to execute is '{}'".format(command))

        if os.name == 'nt':
            exitcode = subprocess.call(command, shell=True)
        else:
            exitcode = subprocess.call(command)

        if correctoutcome == 'pass':
            if exitcode != 0:
>               raise AssertionError("Tests failed on ipynb (expected pass)")
E               AssertionError: Tests failed on ipynb (expected pass)

tests/test_unit_tests_in_notebooks.py:68: AssertionError
------------------------------------------------------------------------------------ Captured stdout call ------------------------------------------------------------------------------------
Starting parametrized test with filename=/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/ipynb-test-samples/test-latex-pass-failsbutignoreoutput.ipynb, correctoutcome=pass
Command about to execute is '['py.test', '--nbval', '-v', '--current-env', '/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/ipynb-test-samples/test-latex-pass-failsbutignoreoutput.ipynb']'
------------------------------------------------------------------------------------ Captured stderr call ------------------------------------------------------------------------------------
ERROR: usage: py.test [options] [file_or_dir] [file_or_dir] [...]
py.test: error: unrecognized arguments: --nbval --current-env
  inifile: None
  rootdir: /disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6

___________________ test_print[/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/ipynb-test-samples/test-stream-pass-missing-unexecuted-output.ipynb] ___________________

filename = '/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/ipynb-test-samples/test-stream-pass-missing-unexecuted-output.ipynb', correctoutcome = 'pass'

    @pytest.mark.parametrize("filename, correctoutcome", testdata, ids=testnames)
    def test_print(filename, correctoutcome):

        command = ["py.test", "--nbval", "-v", "--current-env", filename]
        print("Starting parametrized test with filename={}, correctoutcome={}"
              .format(filename, correctoutcome))
        print("Command about to execute is '{}'".format(command))

        if os.name == 'nt':
            exitcode = subprocess.call(command, shell=True)
        else:
            exitcode = subprocess.call(command)

        if correctoutcome == 'pass':
            if exitcode != 0:
>               raise AssertionError("Tests failed on ipynb (expected pass)")
E               AssertionError: Tests failed on ipynb (expected pass)

tests/test_unit_tests_in_notebooks.py:68: AssertionError
------------------------------------------------------------------------------------ Captured stdout call ------------------------------------------------------------------------------------
Starting parametrized test with filename=/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/ipynb-test-samples/test-stream-pass-missing-unexecuted-output.ipynb, correctoutcome=pass
Command about to execute is '['py.test', '--nbval', '-v', '--current-env', '/disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6/tests/ipynb-test-samples/test-stream-pass-missing-unexecuted-output.ipynb']'
------------------------------------------------------------------------------------ Captured stderr call ------------------------------------------------------------------------------------
ERROR: usage: py.test [options] [file_or_dir] [file_or_dir] [...]
py.test: error: unrecognized arguments: --nbval --current-env
  inifile: None
  rootdir: /disk-samsung/freebsd-ports/devel/py-nbval/work-py39/nbval-0.9.6

================================================================================ 8 failed, 4 passed in 4.94s =================================================================================
*** Error code 1

Version: 0.9.6 Python-3.9 FreeBSD 13.1 STABLE

[takluyver]

The first lot of failures seem to indicate that nbformat is missing a file. That doesn't look like a problem with nbval, and I don't think there's any obvious reason that FreeBSD would be different in this regard than other Unix-y systems. So please check that you've got nbformat installed correctly - e.g. try uninstalling and reinstalling it.