Cloudflare

I have a Rust worker bound to a queue. It gets `Unknown Event - Exceeded CPU Limit` errors without doing very much, e.g. just deserializing the message batch exactly as in the `worker-rs` example for queues. This happen with a single message. I tried setting `usage_model=unbound` in wrangler.toml and I see it picked up in the UI, but the error persists. Am I missing something obvious?

I added a panic hook and I got unblocked by seeing some error messages, but now I've got this error again when trying to make an API call in the worker.