Fix lints with Rust 1.86

[seijikun]

Checklist

• Sensible git history (for example, squash "typo" or "fix" commits). See the Rewriting History guide for help.
• Update the changelog (if necessary)

[seijikun]

Hm. I have to yield on this problem. I'm a bit overwhelmed by it right now—and also way too tired.

[nicholasbishop]

No worries, thanks for looking. We'll get it fixed up soon :)