Solve some warnings

src/days/d02.rs

@@ -44,15 +44,15 @@ pub fn solve() {
     let result = reports
         .iter()
         .filter(|r| {
-            if safe(r.clone().to_vec(), false) {
+            if safe((*r).clone().to_vec(), false) {
                 return true;
             }
-            let mut r2 = r.clone().to_vec();
+            let mut r2 = (*r).clone().to_vec();
             r2.remove(0);
             if safe(r2, true) {
                 return true;
             }
-            let mut r3 = r.clone().to_vec();
+            let mut r3 = (*r).clone().to_vec();
             r3.remove(1);
             safe(r3, true)
         })

src/days/d03.rs

@@ -6,7 +6,6 @@ pub fn solve() {
 
     let contents = fs::read_to_string(path).expect("Something went wrong reading the file");
 
-    let re = Regex::new(r"mul\((\d{1,3}),(\d{1,3})\)").unwrap();
     let mults = get_mults(contents.as_str());
 
     let result = mults.iter().map(|(a, b)| a * b).sum::<usize>();

src/days/d06.rs

@@ -3,9 +3,7 @@ use std::{
     fs,
 };
 
-use rayon::iter::{
+use rayon::iter::{ParallelBridge, ParallelIterator};
-    IndexedParallelIterator, IntoParallelRefIterator, ParallelBridge, ParallelIterator,
-};
 
 pub fn solve() {
     let path = "res/06/input";
@@ -67,8 +65,6 @@ pub fn solve() {
     let result: usize = guard_positions.len();
     println!("Result 1: {}", result);
 
-    let mut obstacle_positions: HashSet<(isize, isize)> = HashSet::new();
-
     let obstacle_positions: Vec<Vec<(isize, isize)>> = map
         .iter()
         .enumerate()
@@ -76,6 +72,7 @@ pub fn solve() {
         .map(|(i, row)| {
             row.iter()
                 .enumerate()
+                .par_bridge()
                 .filter(|(j, cell)| {
                     if !*cell && (i as isize, *j as isize) != init_pos {
                         let mut new_map = map.clone();

src/main.rs

@@ -4,7 +4,7 @@ extern crate scan_fmt;
 use std::time::Instant;
 
 fn main() {
-    //days::d03::solve()
+    //days::d06::solve()
     _all_days()
 }