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Workers disagreed on success or exception type. A subclass of RuntimeError raised by DistributedRunner.
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Raised when some ranks fail and others succeed, or all ranks fail with different exception types. The message identifies the first failing rank. Its exception is available as __cause__. The runner returns no partial result and refuses further calls. Call shutdown() and construct a new runner. If a peer stays blocked in a collective, the call can instead reach its timeout.