Index: benchmark/readyQ/locality.rs
===================================================================
--- benchmark/readyQ/locality.rs	(revision 821c534aa3eaeb777a33fb9c44f8effeb9f54b85)
+++ benchmark/readyQ/locality.rs	(revision 8dcb8322993458ade50fa95feddca3d2de4d72b6)
@@ -124,6 +124,6 @@
 						return (r as *mut MyData, true);
 					}
-					let got = self.ptr.compare_and_swap(expected, ctx as *mut MyCtx as u64, Ordering::SeqCst);
-					if got == expected {
+					let got = self.ptr.compare_exchange_weak(expected, ctx as *mut MyCtx as u64, Ordering::SeqCst, Ordering::SeqCst);
+					if got == Ok(expected) {
 						break expected;// We got the seat
 					}