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-rw-r--r--src/libstd/lib.rs1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/libstd/lib.rs b/src/libstd/lib.rs
index 1c6a02f1dcf..1ad627cedd6 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -109,7 +109,6 @@
 #![feature(box_syntax)]
 #![feature(collections)]
 #![feature(core)]
-#![feature(debug_builders)]
 #![feature(into_cow)]
 #![feature(lang_items)]
 #![feature(libc)]