test_is_valid_should_not_mutate fails with Python 3.13

[mcepl]

When packaging new version of this package for openSUSE/Factory, test test_is_valid_should_not_mutate fails:

[   19s] =================================== FAILURES ===================================
[   19s] __________ test_is_valid_should_not_mutate[_invalidator_1-jsonschema] __________
[   19s] 
[   19s] cls = <class '_pytest.runner.CallInfo'>
[   19s] func = <function call_and_report.<locals>.<lambda> at 0x7fba491e0d60>
[   19s] when = 'call'
[   19s] reraise = (<class '_pytest.outcomes.Exit'>, <class 'KeyboardInterrupt'>)
[   19s] 
[   19s]     @classmethod
[   19s]     def from_call(
[   19s]         cls,
[   19s]         func: Callable[[], TResult],
[   19s]         when: Literal["collect", "setup", "call", "teardown"],
[   19s]         reraise: type[BaseException] | tuple[type[BaseException], ...] | None = None,
[   19s]     ) -> CallInfo[TResult]:
[   19s]         """Call func, wrapping the result in a CallInfo.
[   19s]     
[   19s]         :param func:
[   19s]             The function to call. Called without arguments.
[   19s]         :type func: Callable[[], _pytest.runner.TResult]
[   19s]         :param when:
[   19s]             The phase in which the function is called.
[   19s]         :param reraise:
[   19s]             Exception or exceptions that shall propagate if raised by the
[   19s]             function, instead of being wrapped in the CallInfo.
[   19s]         """
[   19s]         excinfo = None
[   19s]         start = timing.time()
[   19s]         precise_start = timing.perf_counter()
[   19s]         try:
[   19s] >           result: TResult | None = func()
[   19s] 
[   19s] cls        = <class '_pytest.runner.CallInfo'>
[   19s] duration   = 0.010382263993960805
[   19s] excinfo    = <ExceptionInfo PytestUnraisableExceptionWarning('Exception ignored in: <sqlite3.Connection object at 0x7fba492d4b80>\n...      ~~~~~~~~~~~~^^\nResourceWarning: unclosed database in <sqlite3.Connection object at 0x7fba492d4b80>\n') tblen=11>
[   19s] func       = <function call_and_report.<locals>.<lambda> at 0x7fba491e0d60>
[   19s] precise_start = 33629.259203216
[   19s] precise_stop = 33629.26958548
[   19s] reraise    = (<class '_pytest.outcomes.Exit'>, <class 'KeyboardInterrupt'>)
[   19s] result     = None
[   19s] start      = 1732094445.8980231
[   19s] stop       = 1732094445.9084063
[   19s] when       = 'call'
[   19s] 
[   19s] /usr/lib/python3.13/site-packages/_pytest/runner.py:341: 
[   19s] _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
[   19s] /usr/lib/python3.13/site-packages/_pytest/runner.py:242: in <lambda>
[   19s]     lambda: runtest_hook(item=item, **kwds), when=when, reraise=reraise
[   19s]         item       = <Function test_is_valid_should_not_mutate[_invalidator_1-jsonschema]>
[   19s]         kwds       = {}
[   19s]         runtest_hook = <HookCaller 'pytest_runtest_call'>
[   19s] /usr/lib/python3.13/site-packages/pluggy/_hooks.py:513: in __call__
[   19s]     return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
[   19s]         firstresult = False
[   19s]         kwargs     = {'item': <Function test_is_valid_should_not_mutate[_invalidator_1-jsonschema]>}
[   19s]         self       = <HookCaller 'pytest_runtest_call'>
[   19s] /usr/lib/python3.13/site-packages/pluggy/_manager.py:120: in _hookexec
[   19s]     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
[   19s]         firstresult = False
[   19s]         hook_name  = 'pytest_runtest_call'
[   19s]         kwargs     = {'item': <Function test_is_valid_should_not_mutate[_invalidator_1-jsonschema]>}
[   19s]         methods    = [<HookImpl plugin_name='runner', plugin=<module '_pytest.runner' from '/usr/lib/python3.13/site-packages/_pytest/runne...ption', plugin=<module '_pytest.threadexception' from '/usr/lib/python3.13/site-packages/_pytest/threadexception.py'>>]
[   19s]         self       = <_pytest.config.PytestPluginManager object at 0x7fba4a7602f0>
[   19s] /usr/lib/python3.13/site-packages/_pytest/threadexception.py:92: in pytest_runtest_call
[   19s]     yield from thread_exception_runtest_hook()
[   19s] /usr/lib/python3.13/site-packages/_pytest/threadexception.py:68: in thread_exception_runtest_hook
[   19s]     yield
[   19s]         cm         = <_pytest.threadexception.catch_threading_exception object at 0x7fba4923e990>
[   19s] /usr/lib/python3.13/site-packages/_pytest/unraisableexception.py:95: in pytest_runtest_call
[   19s]     yield from unraisable_exception_runtest_hook()
[   19s] _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
[   19s] 
[   19s]     def unraisable_exception_runtest_hook() -> Generator[None]:
[   19s]         with catch_unraisable_exception() as cm:
[   19s]             try:
[   19s]                 yield
[   19s]             finally:
[   19s]                 if cm.unraisable:
[   19s]                     if cm.unraisable.err_msg is not None:
[   19s]                         err_msg = cm.unraisable.err_msg
[   19s]                     else:
[   19s]                         err_msg = "Exception ignored in"
[   19s]                     msg = f"{err_msg}: {cm.unraisable.object!r}\n\n"
[   19s]                     msg += "".join(
[   19s]                         traceback.format_exception(
[   19s]                             cm.unraisable.exc_type,
[   19s]                             cm.unraisable.exc_value,
[   19s]                         )
[   19s]                     )
[   19s] >                   warnings.warn(pytest.PytestUnraisableExceptionWarning(msg))
[   19s] E                   pytest.PytestUnraisableExceptionWarning: Exception ignored in: <sqlite3.Connection object at 0x7fba492d4b80>
[   19s] E                   
[   19s] E                   Traceback (most recent call last):
[   19s] E                     File "/usr/lib/python3.13/site-packages/jsonschema/exceptions.py", line 168, in _set
[   19s] E                       for k, v in kwargs.items():
[   19s] E                                   ~~~~~~~~~~~~^^
[   19s] E                   ResourceWarning: unclosed database in <sqlite3.Connection object at 0x7fba492d4b80>
[   19s] 
[   19s] cm         = <_pytest.unraisableexception.catch_unraisable_exception object at 0x7fba4923e8d0>
[   19s] err_msg    = 'Exception ignored in'
[   19s] msg        = 'Exception ignored in: <sqlite3.Connection object at 0x7fba492d4b80>\n\nTraceback (most recent call last):\n  File "/u...n                ~~~~~~~~~~~~^^\nResourceWarning: unclosed database in <sqlite3.Connection object at 0x7fba492d4b80>\n'
[   19s] 
[   19s] /usr/lib/python3.13/site-packages/_pytest/unraisableexception.py:85: PytestUnraisableExceptionWarning
[   19s] =============================== warnings summary ===============================
[   19s] ../../../../../usr/lib/python3.13/site-packages/jupyter_core/application.py:23
[   19s]   /usr/lib/python3.13/site-packages/jupyter_core/application.py:23: DeprecationWarning: Jupyter is migrating its paths to use standard platformdirs
[   19s]   given by the platformdirs library.  To remove this warning and
[   19s]   see the appropriate new directories, set the environment variable
[   19s]   `JUPYTER_PLATFORM_DIRS=1` and then run `jupyter --paths`.
[   19s]   The use of platformdirs will be the default in `jupyter_core` v6
[   19s]     from .paths import (
[   19s] 
[   19s] -- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
[   19s] ============================= slowest 10 durations =============================
[   19s] 0.42s call     tests/test_sign.py::TestNotary::test_sign_stdin
[   19s] 0.04s call     tests/test_validator.py::test_future[fastjsonschema]
[   19s] 0.04s call     tests/test_validator.py::test_nb2[jsonschema]
[   19s] 0.03s call     tests/test_sign.py::TestNotary::test_cull_db
[   19s] 0.02s call     tests/test_api.py::TestAPI::test_capture_validation_error
[   19s] 0.02s call     tests/test_api.py::TestAPI::test_read
[   19s] 0.02s call     tests/test_validator.py::test_future[jsonschema]
[   19s] 0.02s call     tests/test_validator.py::test_invalid_validator_raises_value_error_after_read
[   19s] 0.02s call     tests/test_validator.py::test_nb4jupyter_metadata_timings[fastjsonschema]
[   19s] 0.02s call     tests/test_validator.py::test_nb4custom[fastjsonschema]
[   19s] =========================== short test summary info ============================
[   19s] SKIPPED [2] tests/test_validator.py:57: Does not work in all architectures
[   19s] FAILED tests/test_validator.py::test_is_valid_should_not_mutate[_invalidator_1-jsonschema]
[   19s] ============= 1 failed, 185 passed, 2 skipped, 1 warning in 1.28s ==============

Complete build log with the list of all packages used and steps taken to reproduce the problem. Notice, that whole test suite passes with 3.10 and 3.12.

[mcepl]

Actually, it is somewhat more complicated, when I skip test_is_valid_should_not_mutate (with pytest -k 'not test_is_valid_should_not_mutate') I get the same error about not closing SQLite database with test_nb4custom, when I skip that, it fails with test_nb4jupyter_metadata_timings. I have not went further.

[mcepl]

Tried to upgrade fastjsonschema to fastjsonschema-2.20.0, but nothing changed.

Build log.