Fix warnings in day 17

1 files changed, 5 insertions, 2 deletions

diff --git a/2018/src/day17.rs b/2018/src/day17.rs
index f920421..9b81c06 100644
--- a/2018/src/day17.rs
+++ b/2018/src/day17.rs
@@ -1,9 +1,10 @@
 use std::io;
 use std::io::BufRead;
-use std::collections::{VecDeque, BinaryHeap, HashSet};
+// use std::collections::VecDeque;
+use std::collections::{BinaryHeap, HashSet};
 use std::cmp;
 use std::iter::{self, Iterator};
-use std::{thread, time};
+// use std::{thread, time};
 
 enum Clay {
     Horizontal(i32, i32, i32),  // y, x1, x2
@@ -104,6 +105,7 @@ impl Grid {
         }
     }
 
+    #[used]
     fn print(&self) {
         for y in 0..self.data.len() {
             for x in 0..self.data[0].len() {
@@ -113,6 +115,7 @@ impl Grid {
         }
     }
 
+    #[used]
     fn print_range(&self, y1: i32, y2: i32, hlx: i32, hly: i32) {
         for y in 0..self.data.len() {
             if self.miny + (y as i32) < y1 {