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-rw-r--r--src/libarena/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libarena/lib.rs b/src/libarena/lib.rs
index 6ad703180c2..5cb8975e9ce 100644
--- a/src/libarena/lib.rs
+++ b/src/libarena/lib.rs
@@ -27,6 +27,7 @@
 #![feature(core_intrinsics)]
 #![feature(dropck_eyepatch)]
 #![cfg_attr(not(stage0), feature(nll))]
+#![cfg_attr(not(stage0), feature(infer_outlives_requirements))]
 #![feature(raw_vec_internals)]
 #![cfg_attr(test, feature(test))]