Merge pull request 'use recommended method of 'sleep'' (#470) from show-waterlevel into staging

Reviewed-on: #470

src/scheduled/mod.rs

@@ -3,7 +3,7 @@ mod waterlevel;
 use std::time::Duration;
 
 use job_scheduler_ng::{Job, JobScheduler};
-use rocket::tokio::{self, task};
+use rocket::tokio::{self, task, time};
 use sqlx::SqlitePool;
 
 pub fn schedule(db: &SqlitePool) {
@@ -26,9 +26,10 @@ pub fn schedule(db: &SqlitePool) {
             });
         }));
 
+        let mut interval = time::interval(Duration::from_secs(60));
         loop {
             sched.tick();
-            std::thread::sleep(Duration::from_secs(60));
+            interval.tick().await;
         }
     });
 }