Fix clippy

[casey]

Clippy is currently failing, I think because of this: rust-lang/rust-clippy#10499

The failure is in clap, a dependency. I don't know how to suppress this error. Also, I think maybe it doesn't happen in clap 4.0, but we're blocked on upgrading to 4.0 on them supporting color in help text.

[soenkehahn]

Hmm, this is a gnarly issue. I don't understand why #![allow(clippy::correctness)] doesn't work. It does work when the same lint is triggered by hand-written code, but it doesn't seem to work for macro-generated code. 🤷

One option might be to switch clippy to nightly, since there these lints seem to be disabled for macros, I think through rust-lang/rust-clippy#10502.

[soenkehahn]

I put up a PR here: #2037. I'm not happy with that solution, but at least it's a working solution. Which I can't say of anything else I tried.