Update stable Rust, fix clippy lints

.github/workflows/ci.yml

@@ -3,7 +3,7 @@ env:
   # version like 1.70. Note that we only specify MAJOR.MINOR and not PATCH so that bugfixes still
   # come automatically. If the version specified here is no longer the latest stable version,
   # then please feel free to submit a PR that adjusts it along with the potential clippy fixes.
-  RUST_STABLE_VER: "1.82" # In quotes because otherwise (e.g.) 1.70 would be interpreted as 1.7
+  RUST_STABLE_VER: "1.83" # In quotes because otherwise (e.g.) 1.70 would be interpreted as 1.7
   # The purpose of checking with the minimum supported Rust toolchain is to detect its staleness.
   # If the compilation fails, then the version specified here needs to be bumped up to reality.
   # Be sure to also update the rust-version property in the workspace Cargo.toml file,

benches/rect_expand.rs

@@ -1,6 +1,8 @@
 // Copyright 2020 the Kurbo Authors
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 
+//! Benchmarks of rect expansion.
+
 #![cfg(nightly)]
 #![feature(test)]
 extern crate test;

src/bezpath.rs

@@ -671,7 +671,7 @@ impl Mul<BezPath> for Affine {
     }
 }
 
-impl<'a> Mul<&'a BezPath> for Affine {
+impl Mul<&BezPath> for Affine {
     type Output = BezPath;
 
     fn mul(self, other: &BezPath) -> BezPath {
@@ -713,7 +713,7 @@ impl Mul<BezPath> for TranslateScale {
     }
 }
 
-impl<'a> Mul<&'a BezPath> for TranslateScale {
+impl Mul<&BezPath> for TranslateScale {
     type Output = BezPath;
 
     fn mul(self, other: &BezPath) -> BezPath {
@@ -1358,8 +1358,9 @@ impl PathEl {
 /// If the slice starts with `LineTo`, `QuadTo`, or `CurveTo`, it will be treated as a `MoveTo`.
 impl<'a> Shape for &'a [PathEl] {
     type PathElementsIter<'iter>
-
-    = core::iter::Copied<core::slice::Iter<'a, PathEl>> where 'a: 'iter;
+        = core::iter::Copied<core::slice::Iter<'a, PathEl>>
+    where
+        'a: 'iter;
 
     #[inline]
     fn path_elements(&self, _tolerance: f64) -> Self::PathElementsIter<'_> {

src/quadspline.rs

@@ -41,7 +41,7 @@ struct ToQuadBez<'a> {
     points: &'a Vec<Point>,
 }
 
-impl<'a> Iterator for ToQuadBez<'a> {
+impl Iterator for ToQuadBez<'_> {
     type Item = QuadBez;
 
     fn next(&mut self) -> Option<Self::Item> {

src/shape.rs

@@ -181,8 +181,10 @@ pub trait Shape {
 /// Blanket implementation so `impl Shape` will accept owned or reference.
 impl<'a, T: Shape> Shape for &'a T {
     type PathElementsIter<'iter>
-
-    = T::PathElementsIter<'iter> where T: 'iter, 'a: 'iter;
+        = T::PathElementsIter<'iter>
+    where
+        T: 'iter,
+        'a: 'iter;
 
     fn path_elements(&self, tolerance: f64) -> Self::PathElementsIter<'_> {
         (*self).path_elements(tolerance)

src/stroke.rs

@@ -564,7 +564,7 @@ enum DashState {
     FromStash,
 }
 
-impl<'a, T: Iterator<Item = PathEl>> Iterator for DashIterator<'a, T> {
+impl<T: Iterator<Item = PathEl>> Iterator for DashIterator<'_, T> {
     type Item = PathEl;
 
     fn next(&mut self) -> Option<PathEl> {

src/svg.rs

@@ -282,7 +282,7 @@ struct SvgLexer<'a> {
     pub last_pt: Point,
 }
 
-impl<'a> SvgLexer<'a> {
+impl SvgLexer<'_> {
     fn new(data: &str) -> SvgLexer {
         SvgLexer {
             data,