zarqman

FYI, it appears that `rustls` was updated as part of #6002 and is included in v1.28. Just updated to v1.28.2 here and the previous TLS errors are no longer happening....

The reconnect thread in `process_op_error` also kills off other threads, but doesn't shutdown the `subscription_executor`. This then calls `attempt_reconnect` -> `start_threads!`, which creates a new `subscription_executor` (overwriting the existing one)....