rollup merge of #20723: pnkfelix/feature-gate-box-syntax

[rust.git] / src / librustc_driver / lib.rs

diff --git a/src/librustc_driver/lib.rs b/src/librustc_driver/lib.rs
index f3a934857ec2b6695a6108b4186a3176286c4e9a..27e1eaacdfd993d2798c0ac7218269f4707c1f93 100644 (file)
--- a/src/librustc_driver/lib.rs
+++ b/src/librustc_driver/lib.rs
@@ -23,8 +23,10 @@
       html_favicon_url = "http://www.rust-lang.org/favicon.ico",
       html_root_url = "http://doc.rust-lang.org/nightly/")]
 
+#![allow(unknown_features)]
 #![feature(quote)]
 #![feature(slicing_syntax, unsafe_destructor)]
+#![feature(box_syntax)]
 #![feature(rustc_diagnostic_macros)]
 
 extern crate arena;