Add allow(unstable) to driver.rs

diff --git a/src/driver/driver.rs b/src/driver/driver.rs
index 5c29cb4ec72760f3813ff1270b1c8b93d8005a58..5f086280a65a5a6d96528b278e55b182774f73f0 100644 (file)
--- a/src/driver/driver.rs
+++ b/src/driver/driver.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![allow(unstable)]
+
 #[cfg(rustdoc)]
 extern crate "rustdoc" as this;