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-rw-r--r--src/libsyntax/lib.rs3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/libsyntax/lib.rs b/src/libsyntax/lib.rs
index 11c4b0f1261..432cdbdfef0 100644
--- a/src/libsyntax/lib.rs
+++ b/src/libsyntax/lib.rs
@@ -28,8 +28,9 @@
 #![feature(associated_consts)]
 #![feature(collections)]
 #![feature(collections_drain)]
-#![feature(core)]
+#![feature(filling_drop)]
 #![feature(libc)]
+#![feature(ref_slice)]
 #![feature(rustc_private)]
 #![feature(staged_api)]
 #![feature(str_char)]