Do not produce errors for kernel exploit default test

pew.go

@@ -209,15 +209,16 @@ func whatever(swg *sizedwaitgroup.SizedWaitGroup, ka config.Artifact,
 	remoteTest := fmt.Sprintf("/tmp/test_%d", rand.Int())
 	err = q.CopyFile("user", testPath, remoteTest)
 	if err != nil {
-		log.Println("copy file err", err)
-		// we should not exit because of testing 'insmod' part
-		// for kernel module
 		if ka.Type == config.KernelExploit {
 			log.Println("Use `echo touch FILE | exploit` for test")
 			q.Command("user",
 				"echo -e '#!/bin/sh\necho touch $2 | $1' "+
 					"> "+remoteTest+
 					" && chmod +x "+remoteTest)
+		} else {
+			log.Println("copy file err", err)
+			// we should not exit because of testing 'insmod' part
+			// for kernel module
 		}
 	}