resolve all lints, update MSRV

src/font/fallback/mod.rs

@@ -140,7 +140,7 @@ impl<'a> FontFallbackIter<'a> {
     }
 }
 
-impl<'a> Iterator for FontFallbackIter<'a> {
+impl Iterator for FontFallbackIter<'_> {
     type Item = Arc<Font>;
     fn next(&mut self) -> Option<Self::Item> {
         if let Some(fallback_info) = self.font_system.monospace_fallbacks_buffer.pop_first() {

src/font/mod.rs

@@ -185,11 +185,11 @@ mod test {
         let now = std::time::Instant::now();
 
         let mut db = fontdb::Database::new();
-        let locale = get_locale().unwrap();
+        let locale = get_locale().expect("Local available");
         db.load_system_fonts();
         FontSystem::new_with_locale_and_db(locale, db);
 
         #[cfg(not(target_arch = "wasm32"))]
-        println!("Fonts load time {}ms.", now.elapsed().as_millis())
+        println!("Fonts load time {}ms.", now.elapsed().as_millis());
     }
 }

src/font/system.rs

@@ -106,7 +106,7 @@ pub struct FontSystem {
     /// Scratch buffer for shaping and laying out.
     pub(crate) shape_buffer: ShapeBuffer,
 
-    /// Buffer for use in FontFallbackIter.
+    /// Buffer for use in `FontFallbackIter`.
     pub(crate) monospace_fallbacks_buffer: BTreeSet<MonospaceFallbackInfo>,
 
     /// Cache for shaped runs
@@ -372,7 +372,7 @@ pub struct BorrowedWithFontSystem<'a, T> {
     pub(crate) font_system: &'a mut FontSystem,
 }
 
-impl<'a, T> Deref for BorrowedWithFontSystem<'a, T> {
+impl<T> Deref for BorrowedWithFontSystem<'_, T> {
     type Target = T;
 
     fn deref(&self) -> &Self::Target {
@@ -380,7 +380,7 @@ impl<'a, T> Deref for BorrowedWithFontSystem<'a, T> {
     }
 }
 
-impl<'a, T> DerefMut for BorrowedWithFontSystem<'a, T> {
+impl<T> DerefMut for BorrowedWithFontSystem<'_, T> {
     fn deref_mut(&mut self) -> &mut Self::Target {
         self.inner
     }