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Python 3.14 can eager-start the Runner task. wait_for then calls timeout() with current_task() still None and the worker dies on startup. Fixes pgjones#351
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Fixes #351. Same crash as #354.
_runusesasyncio.Runner.run(). On Python 3.14 that task can eager-start, so the firstawait asyncio.wait_for(...)inworker_serve(lifespan startup) runs withcurrent_task()stillNone. 3.14'stimeout()raisesRuntimeError: Timeout should be used inside a taskand the worker dies before it binds.Yield once inside the wrapped main so wait_for / TaskGroup see a real task. Tested
_runagainst wait_for.