warning: this `impl` can be derived --> googletest/src/matcher_support/summarize_diff.rs:310:1 | 310 | / impl Default for Buffer<'_> { 311 | | fn default() -> Self { 312 | | Self::Empty 313 | | } 314 | | } | |_^ | = help: for further information visit https://rust-lang.github.io/rust-clippy/beta/index.html#derivable_impls = note: `#[warn(clippy::derivable_impls)]` on by default help: replace the manual implementation with a derive attribute and mark the default variant | 249 + #[derive(Default)] 250 ~ enum Buffer<'a> { 251 ~ #[default] 252 ~ Empty, |