diff --git a/src/libcore/convert.rs b/src/libcore/convert.rs
index a3f1a3201f31..f64f2fb3e9fa 100644
--- a/src/libcore/convert.rs
+++ b/src/libcore/convert.rs
@@ -366,9 +366,9 @@ pub trait From<T>: Sized {
 /// provides an equivalent `TryInto` implementation for free, thanks to a
 /// blanket implementation in the standard library. For more information on this,
 /// see the documentation for [`Into`].
-/// 
+///
 /// # Implementing `TryInto`
-/// 
+///
 /// This suffers the same restrictions and reasoning as implementing
 /// [`Into`], see there for details.
 ///
@@ -387,25 +387,25 @@ pub trait TryInto<T>: Sized {
 
 /// Simple and safe type conversions that may fail in a controlled
 /// way under some circumstances. It is the reciprocal of [`TryInto`].
-/// 
-/// This is useful when you are doing a type conversion that may 
+///
+/// This is useful when you are doing a type conversion that may
 /// trivially succeed but may also need special handling.
 /// For example, there is no way to convert an `i64` into an `i32`
 /// using the [`From`] trait, because an `i64` may contain a value
 /// that an `i32` cannot represent and so the conversion would lose data.
 /// This might be handled by truncating the `i64` to an `i32` (essentially
-/// giving the `i64`'s value modulo `i32::MAX`) or by simply returning 
-/// `i32::MAX`, or by some other method.  The `From` trait is intended 
-/// for lossless conversions, so the `TryFrom` trait informs the 
+/// giving the `i64`'s value modulo `i32::MAX`) or by simply returning
+/// `i32::MAX`, or by some other method.  The `From` trait is intended
+/// for lossless conversions, so the `TryFrom` trait informs the
 /// programmer when a type conversion could go bad and lets them
 /// decide how to handle it.
-/// 
+///
 /// # Generic Implementations
 ///
 /// - `TryFrom<T> for U` implies [`TryInto<U>`]` for T`
-/// - [`try_from`] is reflexive, which means that `TryFrom<T> for T` 
+/// - [`try_from`] is reflexive, which means that `TryFrom<T> for T`
 /// is implemented
-/// 
+///
 /// # Examples
 ///
 /// As described, [`i32`] implements `TryFrom<i64>`:
@@ -416,10 +416,10 @@ pub trait TryInto<T>: Sized {
 /// // and handling the truncation after the fact.
 /// let smaller_number = big_number as i32;
 /// assert_eq!(smaller_number, -727379968);
-/// 
+///
 /// let try_smaller_number = i32::try_from(big_number);
 /// assert!(try_smaller_number.is_err());
-/// 
+///
 /// let try_successful_smaller_number = i32::try_from(3);
 /// assert!(try_successful_smaller_number.is_ok());
 /// ```
diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs
index 39a1b48e0766..d8e230abaf9b 100644
--- a/src/libcore/num/mod.rs
+++ b/src/libcore/num/mod.rs
@@ -4564,7 +4564,7 @@ macro_rules! try_from_lower_bounded {
 
             /// Try to create a target number type from a
             /// source type that has `source::MIN > dest::MIN`.
-            /// Will return an error if `source` is less than 
+            /// Will return an error if `source` is less than
             /// `dest::MIN`.
             #[inline]
             fn try_from(u: $source) -> Result<$target, TryFromIntError> {
@@ -4587,7 +4587,7 @@ macro_rules! try_from_upper_bounded {
 
             /// Try to create a target number type from a
             /// source type that has `source::MAX > dest::MAX`.
-            /// Will return an error if `source` is greater than 
+            /// Will return an error if `source` is greater than
             /// `dest::MAX`.
             #[inline]
             fn try_from(u: $source) -> Result<$target, TryFromIntError> {
@@ -4609,9 +4609,9 @@ macro_rules! try_from_both_bounded {
             type Error = TryFromIntError;
 
             /// Try to "narrow" a number from the source type
-            /// to the target type.  Will return an error if 
-            /// the source value is either larger than the 
-            /// `MAX` value for the target type or smaller 
+            /// to the target type.  Will return an error if
+            /// the source value is either larger than the
+            /// `MAX` value for the target type or smaller
             /// than the `MIN` value for it.
             #[inline]
             fn try_from(u: $source) -> Result<$target, TryFromIntError> {