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-rw-r--r--src/liballoc/collections/vec_deque.rs1
-rw-r--r--src/liballoc/string.rs1
2 files changed, 2 insertions, 0 deletions
diff --git a/src/liballoc/collections/vec_deque.rs b/src/liballoc/collections/vec_deque.rs
index 091b068b0b2..a3b61f1f4a5 100644
--- a/src/liballoc/collections/vec_deque.rs
+++ b/src/liballoc/collections/vec_deque.rs
@@ -50,6 +50,7 @@ const MAXIMUM_ZST_CAPACITY: usize = 1 << (64 - 1); // Largest possible power of
 /// [`pop_front`]: #method.pop_front
 /// [`extend`]: #method.extend
 /// [`append`]: #method.append
+#[cfg_attr(not(test), rustc_diagnostic_item = "vecdeque_type")]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct VecDeque<T> {
     // tail and head are pointers into the buffer. Tail always points
diff --git a/src/liballoc/string.rs b/src/liballoc/string.rs
index 80fa8139915..f3fe1adebb1 100644
--- a/src/liballoc/string.rs
+++ b/src/liballoc/string.rs
@@ -278,6 +278,7 @@ use crate::vec::Vec;
 /// [`Deref`]: ../../std/ops/trait.Deref.html
 /// [`as_str()`]: struct.String.html#method.as_str
 #[derive(PartialOrd, Eq, Ord)]
+#[cfg_attr(not(test), rustc_diagnostic_item = "string_type")]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct String {
     vec: Vec<u8>,