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-rw-r--r--src/librustc_data_structures/lib.rs4
1 files changed, 0 insertions, 4 deletions
diff --git a/src/librustc_data_structures/lib.rs b/src/librustc_data_structures/lib.rs
index 622fb423b51..1e1628936d5 100644
--- a/src/librustc_data_structures/lib.rs
+++ b/src/librustc_data_structures/lib.rs
@@ -26,14 +26,10 @@
 #![feature(unboxed_closures)]
 #![feature(fn_traits)]
 #![feature(unsize)]
-#![cfg_attr(stage0, feature(conservative_impl_trait))]
-#![cfg_attr(stage0, feature(i128_type, i128))]
 #![feature(specialization)]
 #![feature(optin_builtin_traits)]
-#![cfg_attr(stage0, feature(underscore_lifetimes))]
 #![feature(macro_vis_matcher)]
 #![feature(allow_internal_unstable)]
-#![cfg_attr(stage0, feature(universal_impl_trait))]
 
 #![cfg_attr(unix, feature(libc))]
 #![cfg_attr(test, feature(test))]