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-rw-r--r--src/libstd/lib.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index e18e055654b..3f1fec4c317 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -266,7 +266,7 @@
 #![feature(float_from_str_radix)]
 #![feature(fn_traits)]
 #![feature(fnbox)]
-#![feature(generic_param_attrs)]
+#![cfg_attr(stage0, feature(generic_param_attrs))]
 #![feature(hashmap_internals)]
 #![feature(heap_api)]
 #![cfg_attr(stage0, feature(i128_type, i128))]