Index: tests/concurrency/futures/wait_any.cfa
===================================================================
--- tests/concurrency/futures/wait_any.cfa	(revision c26bea2aa0f87b4b070349c5801adc32fb0d4cf9)
+++ tests/concurrency/futures/wait_any.cfa	(revision 190a833c2baaf0fb88c72cb00720c5ab476197bc)
@@ -32,5 +32,5 @@
 
 thread Waiter {};
-void main( Waiter & this ) {
+void main( Waiter & ) {
     for (numtimes) {
         wait_any(futures, num_futures);
@@ -42,5 +42,5 @@
 
 thread Deliverer {};
-void main( Deliverer & this ) {
+void main( Deliverer & ) {
     while (!done) {
         size_t num_satisfy = random(1,num_futures);