Tests fail with pydebug

[serjflint]

Hello!
In our environment we use Python builds with enabled pydebug. Tests present in pydantic-core fail with PytestUnraisableExceptionWarning (or actually ResourceWarning: Object of type ... is not untracked before destruction).
Probably related to PyO3/pyo3#3064

cls = <class '_pytest.runner.CallInfo'>, func = <function call_runtest_hook.<locals>.<lambda> at 0x7f1a766ad2e0>, when = 'call', reraise = (<class '_pytest.outcomes.Exit'>, <class 'KeyboardInterrupt'>)

    @classmethod
    def from_call(
        cls,
        func: "Callable[[], TResult]",
        when: "Literal['collect', 'setup', 'call', 'teardown']",
        reraise: Optional[
            Union[Type[BaseException], Tuple[Type[BaseException], ...]]
        ] = None,
    ) -> "CallInfo[TResult]":
        """Call func, wrapping the result in a CallInfo.
    
        :param func:
            The function to call. Called without arguments.
        :param when:
            The phase in which the function is called.
        :param reraise:
            Exception or exceptions that shall propagate if raised by the
            function, instead of being wrapped in the CallInfo.
        """
        excinfo = None
        start = timing.time()
        precise_start = timing.perf_counter()
        try:
>           result: Optional[TResult] = func()

../venv/lib/python3.11/site-packages/_pytest/runner.py:339: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
../venv/lib/python3.11/site-packages/_pytest/runner.py:260: in <lambda>
    lambda: ihook(item=item, **kwds), when=when, reraise=reraise
../venv/lib/python3.11/site-packages/pluggy/_hooks.py:433: in __call__
    return self._hookexec(self.name, self._hookimpls, kwargs, firstresult)
../venv/lib/python3.11/site-packages/pluggy/_manager.py:112: in _hookexec
    return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
../venv/lib/python3.11/site-packages/_pytest/unraisableexception.py:88: in pytest_runtest_call
    yield from unraisable_exception_runtest_hook()
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

    def unraisable_exception_runtest_hook() -> Generator[None, None, None]:
        with catch_unraisable_exception() as cm:
            yield
            if cm.unraisable:
                if cm.unraisable.err_msg is not None:
                    err_msg = cm.unraisable.err_msg
                else:
                    err_msg = "Exception ignored in"
                msg = f"{err_msg}: {cm.unraisable.object!r}\n\n"
                msg += "".join(
                    traceback.format_exception(
                        cm.unraisable.exc_type,
                        cm.unraisable.exc_value,
                        cm.unraisable.exc_traceback,
                    )
                )
>               warnings.warn(pytest.PytestUnraisableExceptionWarning(msg))
E               pytest.PytestUnraisableExceptionWarning: Exception ignored in: None
E               
E               Traceback (most recent call last):
E                 File "/tmp/venv/lib/python3.11/site-packages/_pytest/python.py", line 195, in pytest_pyfunc_call
E                   result = testfunction(**testargs)
E                            ^^^^^^^^^^^^^^^^^^^^^^^^
E               ResourceWarning: Object of type pydantic_core._pydantic_core.SchemaValidator is not untracked before destruction

../venv/lib/python3.11/site-packages/_pytest/unraisableexception.py:78: PytestUnraisableExceptionWarning

Steps to reproduce on Docker ubuntu:latest:

cd /tmp
git clone https://github.com/python/cpython.git
cd cpython
git switch 3.11
apt-get install nano curl
nano /etc/apt/sources.list
apt-get update
apt-get build-dep python3
apt-get install pkg-config
apt-get install build-essential gdb lcov pkg-config       libbz2-dev libffi-dev libgdbm-dev libgdbm-compat-dev liblzma-dev       libncurses5-dev libreadline6-dev libsqlite3-dev libssl-dev       lzma lzma-dev tk-dev uuid-dev zlib1g-dev
./configure --with-pydebug
make
make install
cd ..
python3.11 -m venv venv
source venv/bin/activate
python -m pip install --upgrade pip setuptools wheel cython
git clone https://github.com/pydantic/pydantic-core.git
cd pydantic-core
pip install -r tests/requirements.txt
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
source "$HOME/.cargo/env"
make install
make test

Selected Assignee: @dmontagu

[davidhewitt]

Yes, I think this is likely to be broken until I can fix it upstream in PyO3.