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-rw-r--r--src/libstd/collections/mod.rs3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/libstd/collections/mod.rs b/src/libstd/collections/mod.rs
index d59d08497d2..4367dda8466 100644
--- a/src/libstd/collections/mod.rs
+++ b/src/libstd/collections/mod.rs
@@ -410,7 +410,8 @@ pub mod hash_set {
 
 /// Experimental support for providing custom hash algorithms to a HashMap and
 /// HashSet.
-#[unstable(feature = "hashmap_hasher", reason = "module was recently added")]
+#[unstable(feature = "hashmap_hasher", reason = "module was recently added",
+           issue = "27713")]
 pub mod hash_state {
     pub use super::hash::state::*;
 }