--- lib/core/include/Rational.h.orig	2019-02-12 16:05:25.000000000 -0700
+++ lib/core/include/Rational.h	2019-03-09 10:38:40.991057582 -0700
@@ -1351,9 +1351,9 @@ public:
       return result;
    }
    friend
-   Rational&& operator>> (Rational&& a, long k)
+   Rational operator>> (Rational&& a, long k)
    {
-      return std::move(a >> k);
+      return a >> k;
    }
    friend
    Rational operator>> (const Rational& a, int k)