FTBFS 2.0.1+dfsg1-2 DeprecationWarning: There is no current event loop

python-werkzeug fails to build from source for Python 3.10 as per https://launchpadlibrarian.net/567964431/buildlog_ubuntu-jammy-amd64.python-werkzeug_2.0.1+dfsg1-2_BUILDING.txt.gz

=================================== FAILURES ===================================
___________________________ test_local_stack_asyncio ___________________________

    @pytest.mark.skipif(
        sys.version_info < (3, 7),
        reason="Locals are not task local in Python 3.6",
    )
    def test_local_stack_asyncio():
        ls = local.LocalStack()
        ls.push(1)

        async def task():
            ls.push(1)
            assert len(ls._local.stack) == 2

> loop = asyncio.get_event_loop()
E DeprecationWarning: There is no current event loop

tests/test_local.py:121: DeprecationWarning
_______________________________ test_proxy_await _______________________________

    def test_proxy_await():
        async def get():
            return 1

        _, p = _make_proxy(get())

        async def main():
            return await p

> out = asyncio.get_event_loop().run_until_complete(main())
E DeprecationWarning: There is no current event loop

tests/test_local.py:574: DeprecationWarning
_______________________________ test_proxy_aiter _______________________________

    def test_proxy_aiter():
        class Example:
            value = 3

            def __aiter__(self):
                return self

            async def __anext__(self):
                if self.value:
                    self.value -= 1
                    return self.value

                raise StopAsyncIteration

        _, p = _make_proxy(Example())

        async def main():
            out = []

            async for v in p:
                out.append(v)

            return out

> out = asyncio.get_event_loop().run_until_complete(main())
E DeprecationWarning: There is no current event loop

tests/test_local.py:602: DeprecationWarning
_______________________ test_proxy_async_context_manager _______________________

    def test_proxy_async_context_manager():
        class Example:
            value = 2

            async def __aenter__(self):
                self.value += 1
                return self

            async def __aexit__(self, exc_type, exc_val, exc_tb):
                self.value -= 1

        _, p = _make_proxy(Example())

        async def main():
            async with p:
                assert p.value == 3

            assert p.value == 2
            return True

> assert asyncio.get_event_loop().run_until_complete(main())
E DeprecationWarning: There is no current event loop

tests/test_local.py:626: DeprecationWarning
=========================== short test summary info ============================
FAILED tests/test_local.py::test_local_stack_asyncio - DeprecationWarning: Th...
FAILED tests/test_local.py::test_proxy_await - DeprecationWarning: There is n...
FAILED tests/test_local.py::test_proxy_aiter - DeprecationWarning: There is n...
FAILED tests/test_local.py::test_proxy_async_context_manager - DeprecationWar...
=========== 4 failed, 757 passed, 1 skipped, 39 deselected in 6.44s ============