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-rw-r--r--src/libcoretest/lib.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/libcoretest/lib.rs b/src/libcoretest/lib.rs
index d12616a97a6..ee47b510ee0 100644
--- a/src/libcoretest/lib.rs
+++ b/src/libcoretest/lib.rs
@@ -23,6 +23,7 @@
 #![feature(nonzero)]
 #![feature(rand)]
 #![feature(raw)]
+#![feature(result_expect_err)]
 #![feature(sip_hash_13)]
 #![feature(slice_patterns)]
 #![feature(step_by)]