strings and modules

exercises/10_modules/modules3.rs

@@ -4,7 +4,7 @@
 // TODO: Bring `SystemTime` and `UNIX_EPOCH` from the `std::time` module into
 // your scope. Bonus style points if you can do it with one line!
 // use ???;
-
+use std::time::{SystemTime, UNIX_EPOCH};
 fn main() {
     match SystemTime::now().duration_since(UNIX_EPOCH) {
         Ok(n) => println!("1970-01-01 00:00:00 UTC was {} seconds ago!", n.as_secs()),