clean w/ clippy

src/model/logbook.rs

@@ -507,7 +507,7 @@ ORDER BY departure DESC
 
         let dep = NaiveDateTime::parse_from_str(&log.departure, "%Y-%m-%dT%H:%M").unwrap();
         let arr = NaiveDateTime::parse_from_str(&log.arrival, "%Y-%m-%dT%H:%M").unwrap();
-        if arr.timestamp() < dep.timestamp() {
+        if arr.and_utc().timestamp() < dep.and_utc().timestamp() {
             return Err(LogbookUpdateError::ArrivalNotAfterDeparture);
         }
         let today = Local::now().date_naive();