TST: non-deterministic ResourceWarnings seen in Python 3.13 and 3.14 in CI with remote data #19511

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1. neutrinoceros

   added

   testing

   Affects-devPRs and issues that do not impact an existing Astropy releasePRs and issues that do not impact an existing Astropy release

   on Mar 31, 2026
2. pllim commented on Apr 6, 2026

   

   pllim

   on Apr 6, 2026

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   Next time you see them, can you please post the exact traceback (without the ignore)? Thanks!

   👍React with 👍1Reacted by Clément Robert
3. pllim

   added

   Python 3.13

   Python 3.14

   Python 3.15

   and removed

   Affects-devPRs and issues that do not impact an existing Astropy releasePRs and issues that do not impact an existing Astropy release

   on Apr 6, 2026
4. pllim commented on Apr 28, 2026

   

   pllim

   on Apr 28, 2026

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   @neutrinoceros , is this the one you are seeing? I saw it in one of my PRs.

   _____________________ TestSimplifyBasicIndex.test_indexing _____________________
     + Exception Group Traceback (most recent call last):
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/_pytest/runner.py", line 353, in from_call
     |     result: TResult | None = func()
     |                              ~~~~^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/_pytest/runner.py", line 245, in <lambda>
     |     lambda: runtest_hook(item=item, **kwds),
     |             ~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_hooks.py", line 512, in __call__
     |     return self._hookexec(self.name, self._hookimpls.copy(), kwargs, firstresult)
     |            ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_manager.py", line 120, in _hookexec
     |     return self._inner_hookexec(hook_name, methods, kwargs, firstresult)
     |            ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_callers.py", line 167, in _multicall
     |     raise exception
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_callers.py", line 139, in _multicall
     |     teardown.throw(exception)
     |     ~~~~~~~~~~~~~~^^^^^^^^^^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/_pytest/logging.py", line 850, in pytest_runtest_call
     |     yield
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_callers.py", line 139, in _multicall
     |     teardown.throw(exception)
     |     ~~~~~~~~~~~~~~^^^^^^^^^^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_callers.py", line 53, in run_old_style_hookwrapper
     |     return result.get_result()
     |            ~~~~~~~~~~~~~~~~~^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_result.py", line 103, in get_result
     |     raise exc.with_traceback(tb)
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_callers.py", line 38, in run_old_style_hookwrapper
     |     res = yield
     |           ^^^^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_callers.py", line 139, in _multicall
     |     teardown.throw(exception)
     |     ~~~~~~~~~~~~~~^^^^^^^^^^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/_pytest/capture.py", line 900, in pytest_runtest_call
     |     return (yield)
     |             ^^^^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_callers.py", line 139, in _multicall
     |     teardown.throw(exception)
     |     ~~~~~~~~~~~~~~^^^^^^^^^^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_callers.py", line 53, in run_old_style_hookwrapper
     |     return result.get_result()
     |            ~~~~~~~~~~~~~~~~~^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_result.py", line 103, in get_result
     |     raise exc.with_traceback(tb)
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_callers.py", line 38, in run_old_style_hookwrapper
     |     res = yield
     |           ^^^^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_callers.py", line 139, in _multicall
     |     teardown.throw(exception)
     |     ~~~~~~~~~~~~~~^^^^^^^^^^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/_pytest/skipping.py", line 268, in pytest_runtest_call
     |     return (yield)
     |             ^^^^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/pluggy/_callers.py", line 121, in _multicall
     |     res = hook_impl.function(*args)
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/_pytest/unraisableexception.py", line 158, in pytest_runtest_call
     |     collect_unraisable(item.config)
     |     ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
     |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/_pytest/unraisableexception.py", line 81, in collect_unraisable
     |     raise ExceptionGroup("multiple unraisable exception warnings", errors)
     | ExceptionGroup: multiple unraisable exception warnings (2 sub-exceptions)
     +-+---------------- 1 ----------------
       | Traceback (most recent call last):
       |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/hypothesis/strategies/_internal/strategies.py", line 117, in forced_value
       |     return getattr(target, cache_key)
       | ResourceWarning: unclosed <ssl.SSLSocket [closed] fd=18, family=2, type=1, proto=6>
       | 
       | The above exception was the direct cause of the following exception:
       | 
       | Traceback (most recent call last):
       |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/_pytest/unraisableexception.py", line 67, in collect_unraisable
       |     warnings.warn(pytest.PytestUnraisableExceptionWarning(msg))
       |     ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       | pytest.PytestUnraisableExceptionWarning: Exception ignored while finalizing socket <ssl.SSLSocket [closed] fd=18, family=2, type=1, proto=6>: None
       | 
       +---------------- 2 ----------------
       | Traceback (most recent call last):
       |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/hypothesis/strategies/_internal/strategies.py", line 115, in forced_value
       |     return getattr(target, force_key)
       | AttributeError: 'LazyStrategy' object has no attribute 'force_is_empty'. Did you mean: 'calc_is_empty'?
       | 
       | During handling of the above exception, another exception occurred:
       | 
       | Traceback (most recent call last):
       |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/hypothesis/strategies/_internal/strategies.py", line 117, in forced_value
       |     return getattr(target, cache_key)
       | ResourceWarning: unclosed <ssl.SSLSocket [closed] fd=13, family=2, type=1, proto=6>
       | 
       | The above exception was the direct cause of the following exception:
       | 
       | Traceback (most recent call last):
       |   File "/home/runner/work/astropy/astropy/.tox/py314-test-devdeps/lib/python3.14/site-packages/_pytest/unraisableexception.py", line 67, in collect_unraisable
       |     warnings.warn(pytest.PytestUnraisableExceptionWarning(msg))
       |     ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       | pytest.PytestUnraisableExceptionWarning: Exception ignored while finalizing socket <ssl.SSLSocket [closed] fd=13, family=2, type=1, proto=6>: None
       | 
       +------------------------------------
   =========================== short test summary info ============================
   FAILED astropy/utils/tests/test_shapes.py::TestSimplifyBasicIndex::test_indexing - ExceptionGroup: multiple unraisable exception warnings (2 sub-exceptions)
   
5. neutrinoceros commented on Apr 28, 2026

   

   neutrinoceros

   on Apr 28, 2026

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   Yes. Although the exact point of failure is not reproducible, so the traceback is essentially useless. I think the warning is emitted at a random point, probably on a gc collection cycle.

   👀React with 👀1Reacted by P. L. Lim
6. pllim commented on Apr 29, 2026

   

   pllim

   on Apr 29, 2026

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   Rather than jump down the rabbit hole, I opted the easy way out... please see #19610
7. neutrinoceros

   closed this as completedin #19610on Apr 29, 2026