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-rw-r--r--compiler/rustc_serialize/src/lib.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_serialize/src/lib.rs b/compiler/rustc_serialize/src/lib.rs
index fab29f29e87..ac1cdc6ad45 100644
--- a/compiler/rustc_serialize/src/lib.rs
+++ b/compiler/rustc_serialize/src/lib.rs
@@ -13,7 +13,7 @@ Core encoding and decoding interfaces.
 #![feature(never_type)]
 #![feature(nll)]
 #![feature(associated_type_bounds)]
-#![feature(min_const_generics)]
+#![cfg_attr(bootstrap, feature(min_const_generics))]
 #![cfg_attr(test, feature(test))]
 #![allow(rustc::internal)]