Index: benchmark/io/http/main.cfa
===================================================================
--- benchmark/io/http/main.cfa	(revision 84a6e70595a98ec7e4eff127b6824c17b329fcae)
+++ benchmark/io/http/main.cfa	(revision 3a0ddb658a45493c4de1b2967c94eaecdb8b69a4)
@@ -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 {