2 files changed, 4 insertions, 4 deletions
diff --git a/src/libcore/alloc.rs b/src/libcore/alloc.rs
index 487f3b76fc7..5d0333d5226 100644
--- a/src/libcore/alloc.rs
+++ b/src/libcore/alloc.rs
@@ -827,11 +827,11 @@ pub unsafe trait Alloc {
         let old_size = layout.size();
 
         if new_size >= old_size {
-            if let Ok(()) = self.grow_in_place(ptr, layout.clone(), new_size) {
+            if let Ok(()) = self.grow_in_place(ptr, layout, new_size) {
                 return Ok(ptr);
             }
         } else if new_size < old_size {
-            if let Ok(()) = self.shrink_in_place(ptr, layout.clone(), new_size) {
+            if let Ok(()) = self.shrink_in_place(ptr, layout, new_size) {
                 return Ok(ptr);
             }
         }
diff --git a/src/libcore/str/lossy.rs b/src/libcore/str/lossy.rs
index b291579553a..e8f747f1a67 100644
--- a/src/libcore/str/lossy.rs
+++ b/src/libcore/str/lossy.rs
@@ -46,7 +46,7 @@ impl<'a> Iterator for Utf8LossyChunksIter<'a> {
     type Item = Utf8LossyChunk<'a>;
 
     fn next(&mut self) -> Option<Utf8LossyChunk<'a>> {
-        if self.source.len() == 0 {
+        if self.source.is_empty() {
             return None;
         }
 
@@ -141,7 +141,7 @@ impl fmt::Display for Utf8Lossy {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         // If we're the empty string then our iterator won't actually yield
         // anything, so perform the formatting manually
-        if self.bytes.len() == 0 {
+        if self.bytes.is_empty() {
             return "".fmt(f)
         }