diff --git a/src/free.rs b/src/free.rs
index 8889b5f62..d93eb2bef 100644
--- a/src/free.rs
+++ b/src/free.rs
@@ -10,24 +10,30 @@ use std::iter::{self, Zip};
 type VecIntoIter<T> = alloc::vec::IntoIter<T>;
 
 #[cfg(feature = "use_alloc")]
-use alloc::string::String;
+use alloc::{
+    string::String,
+};
 
-use crate::intersperse::{Intersperse, IntersperseWith};
 use crate::Itertools;
+use crate::intersperse::{Intersperse, IntersperseWith};
 
-pub use crate::adaptors::{interleave, merge, put_back};
+pub use crate::adaptors::{
+    interleave,
+    merge,
+    put_back,
+};
 #[cfg(feature = "use_alloc")]
-pub use crate::kmerge_impl::kmerge;
-pub use crate::merge_join::merge_join_by;
+pub use crate::put_back_n_impl::put_back_n;
 #[cfg(feature = "use_alloc")]
 pub use crate::multipeek_impl::multipeek;
 #[cfg(feature = "use_alloc")]
 pub use crate::peek_nth::peek_nth;
 #[cfg(feature = "use_alloc")]
-pub use crate::put_back_n_impl::put_back_n;
+pub use crate::kmerge_impl::kmerge;
+pub use crate::zip_eq_impl::zip_eq;
+pub use crate::merge_join::merge_join_by;
 #[cfg(feature = "use_alloc")]
 pub use crate::rciter_impl::rciter;
-pub use crate::zip_eq_impl::zip_eq;
 
 /// Iterate `iterable` with a particular value inserted between each element.
 ///
@@ -39,9 +45,8 @@ pub use crate::zip_eq_impl::zip_eq;
 /// itertools::assert_equal(intersperse((0..3), 8), vec![0, 8, 1, 8, 2]);
 /// ```
 pub fn intersperse<I>(iterable: I, element: I::Item) -> Intersperse<I::IntoIter>
-where
-    I: IntoIterator,
-    <I as IntoIterator>::Item: Clone,
+    where I: IntoIterator,
+          <I as IntoIterator>::Item: Clone
 {
     Itertools::intersperse(iterable.into_iter(), element)
 }
@@ -59,9 +64,8 @@ where
 /// assert_eq!(i, 8);
 /// ```
 pub fn intersperse_with<I, F>(iterable: I, element: F) -> IntersperseWith<I::IntoIter, F>
-where
-    I: IntoIterator,
-    F: FnMut() -> I::Item,
+    where I: IntoIterator,
+          F: FnMut() -> I::Item
 {
     Itertools::intersperse_with(iterable.into_iter(), element)
 }
@@ -78,8 +82,7 @@ where
 /// }
 /// ```
 pub fn enumerate<I>(iterable: I) -> iter::Enumerate<I::IntoIter>
-where
-    I: IntoIterator,
+    where I: IntoIterator
 {
     iterable.into_iter().enumerate()
 }
@@ -96,9 +99,8 @@ where
 /// }
 /// ```
 pub fn rev<I>(iterable: I) -> iter::Rev<I::IntoIter>
-where
-    I: IntoIterator,
-    I::IntoIter: DoubleEndedIterator,
+    where I: IntoIterator,
+          I::IntoIter: DoubleEndedIterator
 {
     iterable.into_iter().rev()
 }
@@ -119,11 +121,9 @@ where
 /// }
 /// assert_eq!(result, vec![(1, 'a'),(2, 'b'),(3, 'c')]);
 /// ```
-///
 pub fn zip<I, J>(i: I, j: J) -> Zip<I::IntoIter, J::IntoIter>
-where
-    I: IntoIterator,
-    J: IntoIterator,
+    where I: IntoIterator,
+          J: IntoIterator
 {
     i.into_iter().zip(j)
 }
@@ -139,13 +139,9 @@ where
 ///     /* loop body */
 /// }
 /// ```
-pub fn chain<I, J>(
-    i: I,
-    j: J,
-) -> iter::Chain<<I as IntoIterator>::IntoIter, <J as IntoIterator>::IntoIter>
-where
-    I: IntoIterator,
-    J: IntoIterator<Item = I::Item>,
+pub fn chain<I, J>(i: I, j: J) -> iter::Chain<<I as IntoIterator>::IntoIter, <J as IntoIterator>::IntoIter>
+    where I: IntoIterator,
+          J: IntoIterator<Item = I::Item>
 {
     i.into_iter().chain(j)
 }
@@ -160,9 +156,8 @@ where
 /// assert_eq!(cloned(b"abc").next(), Some(b'a'));
 /// ```
 pub fn cloned<'a, I, T: 'a>(iterable: I) -> iter::Cloned<I::IntoIter>
-where
-    I: IntoIterator<Item = &'a T>,
-    T: Clone,
+    where I: IntoIterator<Item=&'a T>,
+          T: Clone,
 {
     iterable.into_iter().cloned()
 }
@@ -177,9 +172,8 @@ where
 /// assert_eq!(fold(&[1., 2., 3.], 0., |a, &b| f32::max(a, b)), 3.);
 /// ```
 pub fn fold<I, B, F>(iterable: I, init: B, f: F) -> B
-where
-    I: IntoIterator,
-    F: FnMut(B, I::Item) -> B,
+    where I: IntoIterator,
+          F: FnMut(B, I::Item) -> B
 {
     iterable.into_iter().fold(init, f)
 }
@@ -194,9 +188,8 @@ where
 /// assert!(all(&[1, 2, 3], |elt| *elt > 0));
 /// ```
 pub fn all<I, F>(iterable: I, f: F) -> bool
-where
-    I: IntoIterator,
-    F: FnMut(I::Item) -> bool,
+    where I: IntoIterator,
+          F: FnMut(I::Item) -> bool
 {
     iterable.into_iter().all(f)
 }
@@ -211,9 +204,8 @@ where
 /// assert!(any(&[0, -1, 2], |elt| *elt > 0));
 /// ```
 pub fn any<I, F>(iterable: I, f: F) -> bool
-where
-    I: IntoIterator,
-    F: FnMut(I::Item) -> bool,
+    where I: IntoIterator,
+          F: FnMut(I::Item) -> bool
 {
     iterable.into_iter().any(f)
 }
@@ -228,9 +220,8 @@ where
 /// assert_eq!(max(0..10), Some(9));
 /// ```
 pub fn max<I>(iterable: I) -> Option<I::Item>
-where
-    I: IntoIterator,
-    I::Item: Ord,
+    where I: IntoIterator,
+          I::Item: Ord
 {
     iterable.into_iter().max()
 }
@@ -245,13 +236,13 @@ where
 /// assert_eq!(min(0..10), Some(0));
 /// ```
 pub fn min<I>(iterable: I) -> Option<I::Item>
-where
-    I: IntoIterator,
-    I::Item: Ord,
+    where I: IntoIterator,
+          I::Item: Ord
 {
     iterable.into_iter().min()
 }
 
+
 /// Combine all iterator elements into one String, separated by `sep`.
 ///
 /// [`IntoIterator`] enabled version of [`Itertools::join`].
@@ -263,9 +254,8 @@ where
 /// ```
 #[cfg(feature = "use_alloc")]
 pub fn join<I>(iterable: I, sep: &str) -> String
-where
-    I: IntoIterator,
-    I::Item: Display,
+    where I: IntoIterator,
+          I::Item: Display
 {
     iterable.into_iter().join(sep)
 }
@@ -282,9 +272,9 @@ where
 /// ```
 #[cfg(feature = "use_alloc")]
 pub fn sorted<I>(iterable: I) -> VecIntoIter<I::Item>
-where
-    I: IntoIterator,
-    I::Item: Ord,
+    where I: IntoIterator,
+          I::Item: Ord
 {
     iterable.into_iter().sorted()
 }
+