Use clippy from Rust 1.63.0 in CI

[webmaster128]

Most changes here are due to the this new clippy rule: https://rust-lang.github.io/rust-clippy/master/index.html#derive_partial_eq_without_eq

@uint please have a look at the schema-derive change in particular

[uint]

I guess you're not adding Eq to the macro expansion since someone might want to use a type that is PartialEq but not Eq in a message struct?

[uint]

Yeah, looks good

[webmaster128]

I guess you're not adding Eq to the macro expansion since someone might want to use a type that is PartialEq but not Eq in a message struct?

Yes, that's the idea. Eq is hardly needed. So I'd not make it a requirement.