Fix formatting

src/solvers/cafeteria.rs

@@ -13,7 +13,9 @@ impl Solver for Cafeteria {
     fn process_data<R: BufRead>(&self, mut reader: R) -> (u64, u64) {
         // Builds intervals collection.
         let mut intervals: BTreeSet<Interval> = BTreeSet::new();
-        for line in reader.by_ref().lines()
+        for line in reader
+            .by_ref()
+            .lines()
             .map_while(|x| x.ok().filter(|s| !s.is_empty()))
         {
             let values: Vec<u64> = line.split('-').map_while(|s| s.parse().ok()).collect();