updating the tests to the latest scc

tests/io-redirector/main.cpp

@@ -10,6 +10,8 @@
 #include <cstdio>
 #include <cassert>
 
+using namespace util;
+
 int main(int arcg, char* argv[]){
     IoRedirector::get().start();
     auto result1 = IoRedirector::get().get_output();