diff --git a/croaring/src/bitmap/imp.rs b/croaring/src/bitmap/imp.rs
index 4e02f7b..d89d8fa 100644
--- a/croaring/src/bitmap/imp.rs
+++ b/croaring/src/bitmap/imp.rs
@@ -1,6 +1,5 @@
 use crate::Bitset;
 use ffi::roaring_bitmap_t;
-use std::convert::TryInto;
 use std::ffi::{c_void, CStr};
 use std::ops::{Bound, RangeBounds};
 use std::{mem, ptr};
diff --git a/croaring/src/bitmap/iter.rs b/croaring/src/bitmap/iter.rs
index f9007e6..7925107 100644
--- a/croaring/src/bitmap/iter.rs
+++ b/croaring/src/bitmap/iter.rs
@@ -1,4 +1,3 @@
-use std::iter::{FromIterator, IntoIterator};
 use std::marker::PhantomData;
 use std::mem::MaybeUninit;
 
@@ -134,6 +133,7 @@ impl<'a> BitmapCursor<'a> {
     /// assert_eq!(cursor.next(), None);
     /// ```
     #[inline]
+    #[allow(clippy::should_implement_trait)]
     pub fn next(&mut self) -> Option<u32> {
         self.move_next();
         self.current()
@@ -209,7 +209,7 @@ impl<'a> BitmapCursor<'a> {
     /// bitmap1.add(100);
     /// ```
     #[must_use]
-    pub fn reset_to_first<'b>(self, bitmap: &'b Bitmap) -> BitmapCursor<'b> {
+    pub fn reset_to_first(self, bitmap: &Bitmap) -> BitmapCursor<'_> {
         BitmapCursor::at_first(bitmap)
     }
 
@@ -230,7 +230,7 @@ impl<'a> BitmapCursor<'a> {
     /// assert_eq!(cursor.current(), Some(6));
     /// ```
     #[must_use]
-    pub fn reset_to_last<'b>(self, bitmap: &'b Bitmap) -> BitmapCursor<'b> {
+    pub fn reset_to_last(self, bitmap: &Bitmap) -> BitmapCursor<'_> {
         BitmapCursor::at_last(bitmap)
     }
 
diff --git a/croaring/src/bitmap64/imp.rs b/croaring/src/bitmap64/imp.rs
index 832dd24..10d55ce 100644
--- a/croaring/src/bitmap64/imp.rs
+++ b/croaring/src/bitmap64/imp.rs
@@ -1040,10 +1040,8 @@ impl Bitmap64 {
             end,
             needs_max,
         } = exclusive_range;
-        if needs_max {
-            if self.contains(u64::MAX) {
-                return true;
-            }
+        if needs_max && self.contains(u64::MAX) {
+            return true;
         }
         unsafe { ffi::roaring64_bitmap_intersect_with_range(self.raw.as_ptr(), start, end) }
     }
diff --git a/croaring/src/bitmap64/iter.rs b/croaring/src/bitmap64/iter.rs
index 5e49223..7ab39d9 100644
--- a/croaring/src/bitmap64/iter.rs
+++ b/croaring/src/bitmap64/iter.rs
@@ -178,6 +178,7 @@ impl<'a> Bitmap64Cursor<'a> {
     /// assert_eq!(cursor.next(), None);
     /// ```
     #[inline]
+    #[allow(clippy::should_implement_trait)]
     pub fn next(&mut self) -> Option<u64> {
         self.move_next();
         self.current()
@@ -253,7 +254,7 @@ impl<'a> Bitmap64Cursor<'a> {
     /// bitmap1.add(100);
     /// ```
     #[must_use]
-    pub fn reset_to_first<'b>(self, bitmap: &'b Bitmap64) -> Bitmap64Cursor<'b> {
+    pub fn reset_to_first(self, bitmap: &Bitmap64) -> Bitmap64Cursor<'_> {
         // Don't drop `self` and free the iterator
         let this = ManuallyDrop::new(self);
         unsafe { ffi::roaring64_iterator_reinit(bitmap.raw.as_ptr(), this.raw.as_ptr()) };
@@ -277,7 +278,7 @@ impl<'a> Bitmap64Cursor<'a> {
     /// assert_eq!(cursor.current(), Some(6));
     /// ```
     #[must_use]
-    pub fn reset_to_last<'b>(self, bitmap: &'b Bitmap64) -> Bitmap64Cursor<'b> {
+    pub fn reset_to_last(self, bitmap: &Bitmap64) -> Bitmap64Cursor<'_> {
         // Don't drop `self` and free the iterator
         let this = ManuallyDrop::new(self);
         unsafe { ffi::roaring64_iterator_reinit_last(bitmap.raw.as_ptr(), this.raw.as_ptr()) };
diff --git a/croaring/src/treemap/imp.rs b/croaring/src/treemap/imp.rs
index c78f3e9..66872ab 100644
--- a/croaring/src/treemap/imp.rs
+++ b/croaring/src/treemap/imp.rs
@@ -7,6 +7,7 @@ use std::collections::btree_map::Entry;
 use std::collections::BTreeMap;
 use std::ops::{Bound, RangeBounds};
 use std::{io, u64};
+use std::cmp::Ordering;
 
 impl Treemap {
     /// Creates an empty `Treemap`.
@@ -1220,19 +1221,23 @@ where
     loop {
         let (key, bitmap) = match (lhs_next, rhs_next) {
             (Some((&lhs_key, lhs_bitmap)), Some((&rhs_key, rhs_bitmap))) => {
-                if lhs_key == rhs_key {
-                    let bitmap = f(BinopArgs::Both(lhs_bitmap, rhs_bitmap));
-                    lhs_next = lhs_iter.next();
-                    rhs_next = rhs_iter.next();
-                    (lhs_key, bitmap)
-                } else if lhs_key < rhs_key {
-                    let bitmap = f(BinopArgs::Lhs(lhs_bitmap));
-                    lhs_next = lhs_iter.next();
-                    (lhs_key, bitmap)
-                } else {
-                    let bitmap = f(BinopArgs::Rhs(rhs_bitmap));
-                    rhs_next = rhs_iter.next();
-                    (rhs_key, bitmap)
+                match lhs_key.cmp(&rhs_key) {
+                    Ordering::Equal => {
+                        let bitmap = f(BinopArgs::Both(lhs_bitmap, rhs_bitmap));
+                        lhs_next = lhs_iter.next();
+                        rhs_next = rhs_iter.next();
+                        (lhs_key, bitmap)
+                    }
+                    Ordering::Less => {
+                        let bitmap = f(BinopArgs::Lhs(lhs_bitmap));
+                        lhs_next = lhs_iter.next();
+                        (lhs_key, bitmap)
+                    }
+                    Ordering::Greater => {
+                        let bitmap = f(BinopArgs::Rhs(rhs_bitmap));
+                        rhs_next = rhs_iter.next();
+                        (rhs_key, bitmap)
+                    }
                 }
             }
             (Some((&lhs_key, lhs_bitmap)), None) => {
diff --git a/croaring/src/treemap/iter.rs b/croaring/src/treemap/iter.rs
index f339fc5..7ea7fe3 100644
--- a/croaring/src/treemap/iter.rs
+++ b/croaring/src/treemap/iter.rs
@@ -2,7 +2,7 @@ use super::util;
 use crate::bitmap::BitmapIterator;
 use crate::{Bitmap, Treemap};
 use std::collections::btree_map;
-use std::iter::{self, FromIterator};
+use std::iter;
 
 struct To64Iter<'a> {
     key: u32,