Looking at the code briefly, the first example could be written as let msg = timeout(Duration::from_secs(2), receiver.next()).await.ok()??; // not shown

Looking at the code briefly, the first example could be written as let msg = timeout(Duration::from_secs(2), receiver.next()).await.ok()??; // not shown in article, but next line of code let Message::Text(frame) = msg_result.ok()? else { return None; }; Looks like the fixed the second issue with anyhow::Result<()>