Isolate crashes when error handling path itself fails

Isolate crashes when error handling path itself fails: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). I'm running an aqueduct-based HTTP server and occasionally seeing the whole isolate die, taking out subsequent requests on it. After narrowing it down, the…

The task

I'm running an aqueduct-based HTTP server and occasionally seeing the whole isolate die, taking out subsequent requests on it. After narrowing it down, the crashes seem to happen on the framework's error-handling path itself — not on the original handler's exception. I've reproduced two distinct patterns:

Part of FineEnvs/MiMo-V2.6-RL-harbor-code.