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-rw-r--r--src/librustc_index/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/librustc_index/lib.rs b/src/librustc_index/lib.rs
index d70f51aec01..5d7e0d82e78 100644
--- a/src/librustc_index/lib.rs
+++ b/src/librustc_index/lib.rs
@@ -1,5 +1,6 @@
 #![feature(allow_internal_unstable)]
 #![feature(unboxed_closures)]
+#![feature(test)]
 #![feature(fn_traits)]
 
 pub mod indexed_vec;