ignore slow tests

src/day16.rs

@@ -182,7 +182,9 @@ Valve JJ has flow rate=21; tunnel leads to valve II";
         assert_eq!(process_part_1(INPUT), 1651);
     }
 
+    // This one is ignored for being slow
     #[test]
+    #[ignore]
     fn day2() {
         assert_eq!(process_part_2(INPUT), 1707);
     }

src/day19.rs

@@ -210,7 +210,9 @@ Blueprint 2: Each ore robot costs 2 ore. Each clay robot costs 3 ore. Each obsid
         assert_eq!(process_part_1(INPUT), 33);
     }
 
+    // Slow test ahead
     #[test]
+    #[ignore]
     fn day2() {
         assert_eq!(process_part_2(INPUT), 3472);
     }