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-rw-r--r--compiler/rustc_index/src/lib.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_index/src/lib.rs b/compiler/rustc_index/src/lib.rs
index 0093fa5e562..f18f322b222 100644
--- a/compiler/rustc_index/src/lib.rs
+++ b/compiler/rustc_index/src/lib.rs
@@ -2,7 +2,7 @@
 #![feature(bench_black_box)]
 #![feature(extend_one)]
 #![feature(iter_zip)]
-#![feature(unboxed_closures)]
+#![feature(min_specialization)]
 #![feature(test)]
 #![feature(fn_traits)]