X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Flibcollections%2Fbtree%2Fset.rs;h=e05533aa50e3cf0d7ee3bd955a213d8642bd0eb4;hb=535ee6c7f05e29a6e94edba06b228d64f8ba74ec;hp=ffca6964c5fdfe95190d0a1f16f7091ce6328f7a;hpb=5f22d46e4bea4b5a335c671c61c96f00a5b3f554;p=rust.git

diff --git a/src/libcollections/btree/set.rs b/src/libcollections/btree/set.rs
index ffca6964c5f..e05533aa50e 100644
--- a/src/libcollections/btree/set.rs
+++ b/src/libcollections/btree/set.rs
@@ -138,7 +138,8 @@ pub struct Difference<'a, T: 'a> {
 impl<'a, T: 'a + fmt::Debug> fmt::Debug for Difference<'a, T> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         f.debug_tuple("Difference")
-         .field(&self.clone())
+         .field(&self.a)
+         .field(&self.b)
          .finish()
     }
 }
@@ -160,7 +161,8 @@ pub struct SymmetricDifference<'a, T: 'a> {
 impl<'a, T: 'a + fmt::Debug> fmt::Debug for SymmetricDifference<'a, T> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         f.debug_tuple("SymmetricDifference")
-         .field(&self.clone())
+         .field(&self.a)
+         .field(&self.b)
          .finish()
     }
 }
@@ -182,7 +184,8 @@ pub struct Intersection<'a, T: 'a> {
 impl<'a, T: 'a + fmt::Debug> fmt::Debug for Intersection<'a, T> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         f.debug_tuple("Intersection")
-         .field(&self.clone())
+         .field(&self.a)
+         .field(&self.b)
          .finish()
     }
 }
@@ -204,7 +207,8 @@ pub struct Union<'a, T: 'a> {
 impl<'a, T: 'a + fmt::Debug> fmt::Debug for Union<'a, T> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         f.debug_tuple("Union")
-         .field(&self.clone())
+         .field(&self.a)
+         .field(&self.b)
          .finish()
     }
 }
@@ -941,11 +945,14 @@ fn len(&self) -> usize { self.iter.len() }
 #[unstable(feature = "fused", issue = "35602")]
 impl<T> FusedIterator for IntoIter<T> {}
 
+#[stable(feature = "btree_range", since = "1.17.0")]
 impl<'a, T> Clone for Range<'a, T> {
     fn clone(&self) -> Range<'a, T> {
         Range { iter: self.iter.clone() }
     }
 }
+
+#[stable(feature = "btree_range", since = "1.17.0")]
 impl<'a, T> Iterator for Range<'a, T> {
     type Item = &'a T;
 
@@ -953,6 +960,8 @@ fn next(&mut self) -> Option<&'a T> {
         self.iter.next().map(|(k, _)| k)
     }
 }
+
+#[stable(feature = "btree_range", since = "1.17.0")]
 impl<'a, T> DoubleEndedIterator for Range<'a, T> {
     fn next_back(&mut self) -> Option<&'a T> {
         self.iter.next_back().map(|(k, _)| k)