1 files changed, 2 insertions, 1 deletions
diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index 34280812421..5a1b0d4005e 100644
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -27,6 +27,7 @@
 #![feature(associated_consts)]
 #![feature(const_fn)]
 #![feature(libc)]
+#![feature(optin_builtin_traits)]
 #![feature(rustc_private)]
 #![feature(staged_api)]
 #![feature(str_escape)]
@@ -83,7 +84,6 @@ pub mod diagnostics {
 pub mod diagnostic_list;
 
 pub mod util {
-    pub mod interner;
     pub mod lev_distance;
     pub mod node_count;
     pub mod parser;
@@ -118,6 +118,7 @@ pub mod ptr;
 pub mod show_span;
 pub mod std_inject;
 pub mod str;
+pub mod symbol;
 pub mod test;
 pub mod tokenstream;
 pub mod visit;