Index: benchmark/io/http/main.cfa
===================================================================
--- benchmark/io/http/main.cfa	(revision 3eb540fbdddafe351598b5fc66c94a9418e58305)
+++ benchmark/io/http/main.cfa	(revision 42daeb4e7403d43cd525897dd510b83f331ddae4)
@@ -150,4 +150,5 @@
 			if(errno == EADDRINUSE) {
 				if(waited == 0) {
+					if(!options.interactive) abort | "Port already in use in non-interactive mode. Aborting";
 					sout | "Waiting for port";
 				} else {