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-rw-r--r--src/librustc_traits/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/librustc_traits/lib.rs b/src/librustc_traits/lib.rs
index d17cf35f181..ba6b2c57bfa 100644
--- a/src/librustc_traits/lib.rs
+++ b/src/librustc_traits/lib.rs
@@ -16,6 +16,7 @@
 #![feature(extern_prelude)]
 #![feature(iterator_find_map)]
 #![feature(in_band_lifetimes)]
+#![cfg_attr(not(stage0), feature(nll))]
 
 #![recursion_limit="256"]