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-rw-r--r--compiler/rustc_lint/src/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/rustc_lint/src/lib.rs b/compiler/rustc_lint/src/lib.rs
index 0a14b16e274..b48592c103c 100644
--- a/compiler/rustc_lint/src/lib.rs
+++ b/compiler/rustc_lint/src/lib.rs
@@ -27,6 +27,7 @@
 
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/")]
 #![cfg_attr(test, feature(test))]
+#![feature(array_windows)]
 #![feature(bool_to_option)]
 #![feature(box_syntax)]
 #![feature(crate_visibility_modifier)]