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-rw-r--r--compiler/rustc_serialize/src/lib.rs1
1 files changed, 0 insertions, 1 deletions
diff --git a/compiler/rustc_serialize/src/lib.rs b/compiler/rustc_serialize/src/lib.rs
index 47f72298e22..9e9b78cfdd5 100644
--- a/compiler/rustc_serialize/src/lib.rs
+++ b/compiler/rustc_serialize/src/lib.rs
@@ -13,7 +13,6 @@
 #![feature(core_intrinsics)]
 #![feature(min_specialization)]
 #![feature(never_type)]
-#![feature(ptr_sub_ptr)]
 #![feature(rustdoc_internals)]
 #![warn(unreachable_pub)]
 // tidy-alphabetical-end