diff --git a/library/core/src/clone.rs b/library/core/src/clone.rs
index 409fd2746f5..88f7990c017 100644
--- a/library/core/src/clone.rs
+++ b/library/core/src/clone.rs
@@ -272,6 +272,7 @@ pub unsafe trait CloneToUninit {
 
 #[unstable(feature = "clone_to_uninit", issue = "126799")]
 unsafe impl<T: Clone> CloneToUninit for T {
+    #[inline]
     default unsafe fn clone_to_uninit(&self, dst: *mut Self) {
         // SAFETY: The safety conditions of clone_to_uninit() are a superset of those of
         // ptr::write().
@@ -285,8 +286,10 @@ unsafe impl<T: Clone> CloneToUninit for T {
 
 // Specialized implementation for types that are [`Copy`], not just [`Clone`],
 // and can therefore be copied bitwise.
+#[doc(hidden)]
 #[unstable(feature = "clone_to_uninit", issue = "126799")]
 unsafe impl<T: Copy> CloneToUninit for T {
+    #[inline]
     unsafe fn clone_to_uninit(&self, dst: *mut Self) {
         // SAFETY: The safety conditions of clone_to_uninit() are a superset of those of
         // ptr::copy_nonoverlapping().
@@ -298,6 +301,7 @@ unsafe impl<T: Copy> CloneToUninit for T {
 
 #[unstable(feature = "clone_to_uninit", issue = "126799")]
 unsafe impl<T: Clone> CloneToUninit for [T] {
+    #[inline]
     #[cfg_attr(debug_assertions, track_caller)]
     default unsafe fn clone_to_uninit(&self, dst: *mut Self) {
         let len = self.len();
@@ -326,8 +330,10 @@ unsafe impl<T: Clone> CloneToUninit for [T] {
     }
 }
 
+#[doc(hidden)]
 #[unstable(feature = "clone_to_uninit", issue = "126799")]
 unsafe impl<T: Copy> CloneToUninit for [T] {
+    #[inline]
     #[cfg_attr(debug_assertions, track_caller)]
     unsafe fn clone_to_uninit(&self, dst: *mut Self) {
         let len = self.len();
@@ -348,6 +354,7 @@ unsafe impl<T: Copy> CloneToUninit for [T] {
 
 #[unstable(feature = "clone_to_uninit", issue = "126799")]
 unsafe impl CloneToUninit for str {
+    #[inline]
     #[cfg_attr(debug_assertions, track_caller)]
     unsafe fn clone_to_uninit(&self, dst: *mut Self) {
         // SAFETY: str is just a [u8] with UTF-8 invariant
diff --git a/library/std/src/ffi/os_str.rs b/library/std/src/ffi/os_str.rs
index f68ea3c562a..918eec2d0d8 100644
--- a/library/std/src/ffi/os_str.rs
+++ b/library/std/src/ffi/os_str.rs
@@ -1266,6 +1266,7 @@ impl Clone for Box<OsStr> {
 
 #[unstable(feature = "clone_to_uninit", issue = "126799")]
 unsafe impl CloneToUninit for OsStr {
+    #[inline]
     #[cfg_attr(debug_assertions, track_caller)]
     unsafe fn clone_to_uninit(&self, dst: *mut Self) {
         // SAFETY: we're just a wrapper around a platform-specific Slice
diff --git a/library/std/src/path.rs b/library/std/src/path.rs
index d6c78883f28..9eaa0e01c2c 100644
--- a/library/std/src/path.rs
+++ b/library/std/src/path.rs
@@ -3113,6 +3113,7 @@ impl Path {
 
 #[unstable(feature = "clone_to_uninit", issue = "126799")]
 unsafe impl CloneToUninit for Path {
+    #[inline]
     #[cfg_attr(debug_assertions, track_caller)]
     unsafe fn clone_to_uninit(&self, dst: *mut Self) {
         // SAFETY: Path is just a wrapper around OsStr
diff --git a/library/std/src/sys/os_str/bytes.rs b/library/std/src/sys/os_str/bytes.rs
index 8529207366e..992767211d0 100644
--- a/library/std/src/sys/os_str/bytes.rs
+++ b/library/std/src/sys/os_str/bytes.rs
@@ -351,6 +351,7 @@ impl Slice {
 
 #[unstable(feature = "clone_to_uninit", issue = "126799")]
 unsafe impl CloneToUninit for Slice {
+    #[inline]
     #[cfg_attr(debug_assertions, track_caller)]
     unsafe fn clone_to_uninit(&self, dst: *mut Self) {
         // SAFETY: we're just a wrapper around [u8]
diff --git a/library/std/src/sys/os_str/wtf8.rs b/library/std/src/sys/os_str/wtf8.rs
index e5755a4b874..433237aa6e7 100644
--- a/library/std/src/sys/os_str/wtf8.rs
+++ b/library/std/src/sys/os_str/wtf8.rs
@@ -274,6 +274,7 @@ impl Slice {
 
 #[unstable(feature = "clone_to_uninit", issue = "126799")]
 unsafe impl CloneToUninit for Slice {
+    #[inline]
     #[cfg_attr(debug_assertions, track_caller)]
     unsafe fn clone_to_uninit(&self, dst: *mut Self) {
         // SAFETY: we're just a wrapper around Wtf8
diff --git a/library/std/src/sys_common/wtf8.rs b/library/std/src/sys_common/wtf8.rs
index 2bdeff78ddf..063451ad54e 100644
--- a/library/std/src/sys_common/wtf8.rs
+++ b/library/std/src/sys_common/wtf8.rs
@@ -1051,6 +1051,7 @@ impl Hash for Wtf8 {
 
 #[unstable(feature = "clone_to_uninit", issue = "126799")]
 unsafe impl CloneToUninit for Wtf8 {
+    #[inline]
     #[cfg_attr(debug_assertions, track_caller)]
     unsafe fn clone_to_uninit(&self, dst: *mut Self) {
         // SAFETY: we're just a wrapper around [u8]