tests/unit_tests/ensemble_evaluator/test_monitor.py::test_that_monitor_can_emit_heartbeats is flaky

[eivindjahren]

websockets.exceptions.ConnectionClosedError: sent 1000 (OK); then received 1011 (internal error)
https://github.com/equinor/ert/actions/runs/9280874968/job/25535895978?pr=7997

Seems related to this log message:

.../python3.8/site-packages/_pytest/unraisableexception.py:59: RuntimeWarning: coroutine 'WebSocketServer._close' was never awaited
    del self.unraisable
  Enable tracemalloc to get traceback where the object was allocated.

[berland]

Reproducible with pytest-repeat on local hardware py311.

[xjules]

RuntimeWarning: coroutine 'WebSocketServer._close' was never awaited

It seems that RuntimeWarning: coroutine 'WebSocketServer._close' is not related to the failure as this is triggered by the test not finishing.