Current nightly versions trigger unexpected_cfgs warning.

[sirno]

There has been a change in newer compiler versions causing unexpected_cfgs to be reported in derive macros (rust-lang/rust#132577).

The warning is triggered here:

npyz/derive/src/lib.rs

Line 256 in 55f210e

#[cfg_attr(feature = "cargo-clippy", allow(useless_attribute))]

cargo clippy is about to remove its feature setting behavior as posted in https://blog.rust-lang.org/2024/02/28/Clippy-deprecating-feature-cargo-clippy.html

I suppose the line can simply be replaced with #[allow(clippy:useless_attribute)].