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-rw-r--r--src/liballoc/boxed.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/liballoc/boxed.rs b/src/liballoc/boxed.rs
index 8a39be8fae8..2f867912f58 100644
--- a/src/liballoc/boxed.rs
+++ b/src/liballoc/boxed.rs
@@ -95,6 +95,7 @@ pub const HEAP: ExchangeHeapSingleton = ExchangeHeapSingleton { _force_singleton
 #[unstable(feature = "box_heap",
            reason = "may be renamed; uncertain about custom allocator design",
            issue = "27779")]
+#[allow(missing_debug_implementations)]
 #[derive(Copy, Clone)]
 pub struct ExchangeHeapSingleton {
     _force_singleton: (),
@@ -129,6 +130,7 @@ pub struct Box<T: ?Sized>(Unique<T>);
 #[unstable(feature = "placement_in",
            reason = "placement box design is still being worked out.",
            issue = "27779")]
+#[allow(missing_debug_implementations)]
 pub struct IntermediateBox<T: ?Sized> {
     ptr: *mut u8,
     size: usize,