diff --git a/src/any/difficulty/mod.rs b/src/any/difficulty/mod.rs
index a5aa1f3a..25e05fed 100644
--- a/src/any/difficulty/mod.rs
+++ b/src/any/difficulty/mod.rs
@@ -385,7 +385,7 @@ impl Difficulty {
     }
 }
 
-fn non_zero_u64_to_f64(n: NonZeroU64) -> f64 {
+const fn non_zero_u64_to_f64(n: NonZeroU64) -> f64 {
     f64::from_bits(n.get())
 }
 
diff --git a/src/catch/difficulty/skills/movement.rs b/src/catch/difficulty/skills/movement.rs
index b2353ad1..5d6d04a0 100644
--- a/src/catch/difficulty/skills/movement.rs
+++ b/src/catch/difficulty/skills/movement.rs
@@ -131,7 +131,7 @@ impl ISkill for Movement {
     type DifficultyObjects<'a> = [CatchDifficultyObject];
 }
 
-impl<'a> Skill<'a, Movement> {
+impl Skill<'_, Movement> {
     fn calculate_initial_strain(&mut self, time: f64, curr: &CatchDifficultyObject) -> f64 {
         let prev_start_time = curr
             .previous(0, self.diff_objects)
diff --git a/src/osu/difficulty/skills/aim.rs b/src/osu/difficulty/skills/aim.rs
index 32537fd2..e17611e4 100644
--- a/src/osu/difficulty/skills/aim.rs
+++ b/src/osu/difficulty/skills/aim.rs
@@ -133,7 +133,9 @@ impl AimEvaluator {
             return 0.0;
         };
 
+        #[allow(clippy::items_after_statements)]
         const RADIUS: i32 = OsuDifficultyObject::NORMALIZED_RADIUS;
+        #[allow(clippy::items_after_statements)]
         const DIAMETER: i32 = OsuDifficultyObject::NORMALIZED_DIAMETER;
 
         // * Calculate the velocity to the current hitobject, which starts
diff --git a/src/osu/difficulty/skills/speed.rs b/src/osu/difficulty/skills/speed.rs
index c1255801..f596450b 100644
--- a/src/osu/difficulty/skills/speed.rs
+++ b/src/osu/difficulty/skills/speed.rs
@@ -135,9 +135,7 @@ impl<'a> Skill<'a, Speed> {
         self.inner.curr_rhythm =
             RhythmEvaluator::evaluate_diff_of(curr, self.diff_objects, self.inner.hit_window);
 
-        let total_strain = self.inner.curr_strain * self.inner.curr_rhythm;
-
-        total_strain
+        self.inner.curr_strain * self.inner.curr_rhythm
     }
 }
 
diff --git a/src/osu/difficulty/skills/strain.rs b/src/osu/difficulty/skills/strain.rs
index 861eb36c..7497525e 100644
--- a/src/osu/difficulty/skills/strain.rs
+++ b/src/osu/difficulty/skills/strain.rs
@@ -1,18 +1,10 @@
 use crate::any::difficulty::skills::{DifficultyValue, StrainSkill, UsedStrainSkills};
 
-#[derive(Clone)]
+#[derive(Clone, Default)]
 pub struct OsuStrainSkill {
     pub inner: StrainSkill,
 }
 
-impl Default for OsuStrainSkill {
-    fn default() -> Self {
-        Self {
-            inner: StrainSkill::default(),
-        }
-    }
-}
-
 impl OsuStrainSkill {
     pub const REDUCED_SECTION_COUNT: usize = 10;
     pub const REDUCED_STRAIN_BASELINE: f64 = 0.75;
diff --git a/src/osu/performance/mod.rs b/src/osu/performance/mod.rs
index af0214e4..02ec3ca9 100644
--- a/src/osu/performance/mod.rs
+++ b/src/osu/performance/mod.rs
@@ -765,9 +765,7 @@ impl<'map> OsuPerformance<'map> {
         match map {
             Cow::Borrowed(map) => match map.convert_ref(mode, mods) {
                 Ok(map) => Ok(map),
-                Err(_) => {
-                    return Err(MapOrAttrs::Map(Cow::Borrowed(map)));
-                }
+                Err(_) => Err(MapOrAttrs::Map(Cow::Borrowed(map))),
             },
             Cow::Owned(mut map) => {
                 if map.convert_mut(mode, mods).is_err() {
diff --git a/src/util/map_or_attrs.rs b/src/util/map_or_attrs.rs
index a5f9e34b..bbac3e55 100644
--- a/src/util/map_or_attrs.rs
+++ b/src/util/map_or_attrs.rs
@@ -10,7 +10,7 @@ pub enum MapOrAttrs<'map, M: IGameMode> {
     Attrs(M::DifficultyAttributes),
 }
 
-impl<'map, M: IGameMode> MapOrAttrs<'map, M> {
+impl<M: IGameMode> MapOrAttrs<'_, M> {
     /// Return a mutable reference to the attributes.
     ///
     /// If `self` is of variant `Map`, store `attrs` in `self`, and return a
diff --git a/src/util/strains_vec.rs b/src/util/strains_vec.rs
index c46495ef..2e615a15 100644
--- a/src/util/strains_vec.rs
+++ b/src/util/strains_vec.rs
@@ -151,7 +151,7 @@ mod inner {
         }
     }
 
-    impl<'a> Iterator for StrainsIter<'a> {
+    impl Iterator for StrainsIter<'_> {
         type Item = f64;
 
         fn next(&mut self) -> Option<Self::Item> {
@@ -219,14 +219,14 @@ mod inner {
                 }
             }
 
-            pub fn is_zero(self) -> bool {
+            pub const fn is_zero(self) -> bool {
                 unsafe { self.value.is_sign_negative() }
             }
 
             // Requiring `self` as a reference improves ergonomics for passing this
             // method as argument to higher-order functions.
             #[allow(clippy::trivially_copy_pass_by_ref)]
-            pub fn is_value(&self) -> bool {
+            pub const fn is_value(&self) -> bool {
                 !self.is_zero()
             }