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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 f90647472c6..c8fae91fcf3 100644
--- a/src/libstd/lib.rs
+++ b/src/libstd/lib.rs
@@ -294,7 +294,7 @@
 #![feature(shrink_to)]
 #![feature(slice_concat_ext)]
 #![feature(slice_internals)]
-#![feature(slice_patterns)]
+#![cfg_attr(bootstrap, feature(slice_patterns))]
 #![feature(specialization)]
 #![feature(staged_api)]
 #![feature(std_internals)]