No output from Stdout

[Barry Denton]

I have compiled this but when run it gives no output
why?

module test;
import tango.io.Stdout;
import tango.text.locale.Locale;
 
 void main(){
 Locale locale = new Locale;
 Stdout("I have lost {} of my birds",20).newline;
 Stdout.formatln("I have {:C} birds on the roof",100);
}
Taking Locale out does not seem to affect it , still no output
I am looking loco