style: Make clippy happy

Author: epage

src/function.rs

@@ -17,6 +17,7 @@ use crate::Predicate;
 
 /// Predicate that wraps a function over a reference that returns a `bool`.
 /// This type is returned by the `predicate::function` function.
+#[allow(clippy::derive_partial_eq_without_eq)]
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub struct FnPredicate<F, T>
 where

src/str/difference.rs

@@ -98,7 +98,7 @@ where
 #[cfg(feature = "color")]
 fn colorize_diff(mut lines: Vec<String>, palette: crate::Palette) -> Vec<String> {
     for (i, line) in lines.iter_mut().enumerate() {
-        match (i, line.as_bytes().get(0)) {
+        match (i, line.as_bytes().first()) {
             (0, _) => {
                 if let Some((prefix, body)) = line.split_once(' ') {
                     *line = format!("{:#} {}", palette.expected(prefix), body);