1 files changed, 7 insertions, 1 deletions
diff --git a/src/rustbook/main.rs b/src/rustbook/main.rs
index 1e5c571888e..6d9078c6687 100644
--- a/src/rustbook/main.rs
+++ b/src/rustbook/main.rs
@@ -9,7 +9,13 @@
 // except according to those terms.
 
 #![feature(slicing_syntax, box_syntax)]
-#![feature(unnamed_feature)]
+#![feature(collections)]
+#![feature(core)]
+#![feature(io)]
+#![feature(os)]
+#![feature(path)]
+#![feature(rustc_private)]
+#![feature(rustdoc)]
 
 extern crate regex;