[INFO] cloning repository https://github.com/rickKase/leetcode_75
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rickKase/leetcode_75" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrickKase%2Fleetcode_75", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrickKase%2Fleetcode_75'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1ffce6a2f86e63f6e5bd26055566f474c1bddea6
[INFO] checking rickKase/leetcode_75 against try#5ec4d3b0c83717313176eefa7d71e9d36dc83355 for 155501-infallible-never-no-reservation
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FrickKase%2Fleetcode_75" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rickKase/leetcode_75
[INFO] finished tweaking git repo https://github.com/rickKase/leetcode_75
[INFO] tweaked toml for git repo https://github.com/rickKase/leetcode_75 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rickKase/leetcode_75 on toolchain 5ec4d3b0c83717313176eefa7d71e9d36dc83355
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rickKase/leetcode_75 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88d3df96208d42928aad210c05b755233741912b76e9fff04c32f9b5c3dd3a42
[INFO] running `Command { std: "docker" "start" "-a" "88d3df96208d42928aad210c05b755233741912b76e9fff04c32f9b5c3dd3a42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88d3df96208d42928aad210c05b755233741912b76e9fff04c32f9b5c3dd3a42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88d3df96208d42928aad210c05b755233741912b76e9fff04c32f9b5c3dd3a42", kill_on_drop: false }`
[INFO] [stdout] 88d3df96208d42928aad210c05b755233741912b76e9fff04c32f9b5c3dd3a42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+5ec4d3b0c83717313176eefa7d71e9d36dc83355" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40ce6f9a133f8d57761cd61eae2effb871db9a8c331f38f03838d34473152bf1
[INFO] running `Command { std: "docker" "start" "-a" "40ce6f9a133f8d57761cd61eae2effb871db9a8c331f38f03838d34473152bf1", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode_75 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `questions::q1`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use questions::q1;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `questions::q1`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use questions::q1;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/questions/q42.rs:33:20
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn reverse_first_k(mut head: Option<Box<ListNode>>, k: usize) -> (Option<Box<ListNode>>, Option<Box<ListNode>>) {
[INFO] [stdout]    |                    ----^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `prep` is never used
[INFO] [stdout]   --> src/main.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn prep() -> io::Result<()> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_files` is never used
[INFO] [stdout]   --> src/main.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn create_files(n: usize, pattern: &str) -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `two_sum` is never used
[INFO] [stdout]   --> src/questions/q1.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q1.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max_profit` is never used
[INFO] [stdout]   --> src/questions/q2.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn max_profit(prices: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q2.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `contains_duplicate` is never used
[INFO] [stdout]   --> src/questions/q3.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn contains_duplicate(nums: Vec<i32>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q3.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `product_except_self` is never used
[INFO] [stdout]   --> src/questions/q4.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn product_except_self(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q4.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max_subarray` is never used
[INFO] [stdout]   --> src/questions/q5.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn max_subarray(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q5.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListNode` is never constructed
[INFO] [stdout]   --> src/questions/q6.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct ListNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q6.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 20 |     #[inline]
[INFO] [stdout] 21 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_two_lists` is never used
[INFO] [stdout]   --> src/questions/q6.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn merge_two_lists(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q6.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid` is never used
[INFO] [stdout]   --> src/questions/q7.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn is_valid(s: String) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q7.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search_insert` is never used
[INFO] [stdout]   --> src/questions/q8.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn search_insert(nums: Vec<i32>, target: i32) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q8.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `climb_stairs` is never used
[INFO] [stdout]   --> src/questions/q9.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn climb_stairs(n: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q9.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListNode` is never constructed
[INFO] [stdout]   --> src/questions/q10.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct ListNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q10.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 21 |     /// Creates a new ListNode wrapped in Rc<RefCell<>>
[INFO] [stdout] 22 |     pub fn new(val: i32) -> Rc<RefCell<ListNode>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `has_cycle` is never used
[INFO] [stdout]   --> src/questions/q10.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn has_cycle(head: Option<Rc<RefCell<ListNode>>>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q10.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/questions/q11.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q11.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 26 |     #[inline]
[INFO] [stdout] 27 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_symmetric` is never used
[INFO] [stdout]   --> src/questions/q11.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn is_symmetric(root: Option<Box<TreeNode>>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q11.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/questions/q12.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q12.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 18 |     #[inline]
[INFO] [stdout] 19 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max_depth` is never used
[INFO] [stdout]   --> src/questions/q12.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn max_depth(root: Option<Box<TreeNode>>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q12.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/questions/q13.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q13.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 18 |     #[inline]
[INFO] [stdout] 19 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `level_order` is never used
[INFO] [stdout]   --> src/questions/q13.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn level_order(root: Option<Box<TreeNode>>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q13.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/questions/q14.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q14.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 18 |     #[inline]
[INFO] [stdout] 19 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_same_tree` is never used
[INFO] [stdout]   --> src/questions/q14.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn is_same_tree(p: Option<Box<TreeNode>>, q: Option<Box<TreeNode>>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q14.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/questions/q15.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q15.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 33 |     #[inline]
[INFO] [stdout] 34 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `invert_tree` is never used
[INFO] [stdout]   --> src/questions/q15.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn invert_tree(root: Option<Box<TreeNode>>) -> Option<Box<TreeNode>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q15.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListNode` is never constructed
[INFO] [stdout]   --> src/questions/q16.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct ListNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q16.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 20 |     #[inline]
[INFO] [stdout] 21 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_nth_from_end` is never used
[INFO] [stdout]   --> src/questions/q16.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn remove_nth_from_end(head: Option<Box<ListNode>>, n: i32) -> Option<Box<ListNode>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q16.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_anagram` is never used
[INFO] [stdout]   --> src/questions/q17.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn is_anagram(s: String, t: String) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q17.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `letter_combinations` is never used
[INFO] [stdout]   --> src/questions/q18.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn letter_combinations(digits: String) -> Vec<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q18.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_common_prefix` is never used
[INFO] [stdout]   --> src/questions/q19.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn longest_common_prefix(strs: Vec<String>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q19.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_intervals` is never used
[INFO] [stdout]   --> src/questions/q20.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn merge_intervals(mut intervals: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q20.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unique_paths` is never used
[INFO] [stdout]   --> src/questions/q21.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn unique_paths(m: i32, n: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q21.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `min_path_sum` is never used
[INFO] [stdout]   --> src/questions/q22.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn min_path_sum(grid: Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q22.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num_decodings` is never used
[INFO] [stdout]   --> src/questions/q23.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn num_decodings(s: String) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q23.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_lis` is never used
[INFO] [stdout]   --> src/questions/q24.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn length_of_lis(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q24.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `coin_change` is never used
[INFO] [stdout]   --> src/questions/q25.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn coin_change(coins: Vec<i32>, amount: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q25.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_palindrome` is never used
[INFO] [stdout]   --> src/questions/q26.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn longest_palindrome(s: String) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expand_around_center` is never used
[INFO] [stdout]   --> src/questions/q26.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn expand_around_center(s_chars: &Vec<char>, left: usize, right: usize) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q26.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_valid_sudoku` is never used
[INFO] [stdout]   --> src/questions/q27.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn is_valid_sudoku(board: Vec<Vec<char>>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q27.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `word_search` is never used
[INFO] [stdout]   --> src/questions/q28.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn word_search(board: Vec<Vec<char>>, word: String) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q28.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `combination_sum` is never used
[INFO] [stdout]   --> src/questions/q29.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn combination_sum(candidates: Vec<i32>, target: i32) -> Vec<Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q29.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `subsets` is never used
[INFO] [stdout]   --> src/questions/q30.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn subsets(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q30.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max_product` is never used
[INFO] [stdout]   --> src/questions/q31.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn max_product(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q31.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `can_jump` is never used
[INFO] [stdout]   --> src/questions/q32.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn can_jump(nums: Vec<i32>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q32.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListNode` is never constructed
[INFO] [stdout]   --> src/questions/q33.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct ListNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q33.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 25 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge_k_lists` is never used
[INFO] [stdout]   --> src/questions/q33.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn merge_k_lists(lists: Vec<Option<Box<ListNode>>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q33.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num_trees` is never used
[INFO] [stdout]   --> src/questions/q34.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn num_trees(n: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q34.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `word_break` is never used
[INFO] [stdout]   --> src/questions/q35.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn word_break(s: String, word_dict: Vec<String>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q35.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListNode` is never constructed
[INFO] [stdout]   --> src/questions/q36.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct ListNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q36.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 24 |     /// Creates a new ListNode wrapped in Rc<RefCell<>>
[INFO] [stdout] 25 |     pub fn new(val: i32) -> Rc<RefCell<ListNode>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `detect_cycle` is never used
[INFO] [stdout]   --> src/questions/q36.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn detect_cycle(head: Option<Rc<RefCell<ListNode>>>) -> Option<Rc<RefCell<ListNode>>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q36.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/questions/q37.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct Node {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q37.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Node {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 26 |     /// Creates a new graph node wrapped in Rc<RefCell<>>
[INFO] [stdout] 27 |     pub fn new(val: i32) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `clone_graph` is never used
[INFO] [stdout]   --> src/questions/q37.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn clone_graph(node: Option<Rc<RefCell<Node>>>) -> Option<Rc<RefCell<Node>>> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q37.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/questions/q38.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q38.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 29 |     #[inline]
[INFO] [stdout] 30 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Codec` is never constructed
[INFO] [stdout]   --> src/questions/q38.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Codec;
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `serialize` and `deserialize` are never used
[INFO] [stdout]   --> src/questions/q38.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Codec {
[INFO] [stdout]    | ---------- associated functions in this implementation
[INFO] [stdout] 38 |     /// Serializes a binary tree to a string using pre-order traversal.
[INFO] [stdout] 39 |     pub fn serialize(root: Option<Box<TreeNode>>) -> String {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     pub fn deserialize(data: String) -> Option<Box<TreeNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q38.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/questions/q39.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q39.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 29 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lowest_common_ancestor` is never used
[INFO] [stdout]   --> src/questions/q39.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn lowest_common_ancestor<'a>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q39.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/questions/q40.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q40.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 24 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max_path_sum` is never used
[INFO] [stdout]   --> src/questions/q40.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn max_path_sum(root: Option<Box<TreeNode>>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q40.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trap` is never used
[INFO] [stdout]   --> src/questions/q41.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn trap(height: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q41.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListNode` is never constructed
[INFO] [stdout]   --> src/questions/q42.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct ListNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q42.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 22 |     #[inline]
[INFO] [stdout] 23 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_first_k` is never used
[INFO] [stdout]   --> src/questions/q42.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn reverse_first_k(mut head: Option<Box<ListNode>>, k: usize) -> (Option<Box<ListNode>>, Option<Box<ListNode>>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_k_group` is never used
[INFO] [stdout]   --> src/questions/q42.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn reverse_k_group(head: Option<Box<ListNode>>, k: i32) -> Option<Box<ListNode>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q42.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_consecutive` is never used
[INFO] [stdout]   --> src/questions/q43.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn longest_consecutive(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q43.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MedianFinder` is never constructed
[INFO] [stdout]   --> src/questions/q44.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct MedianFinder {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add_num`, and `find_median` are never used
[INFO] [stdout]   --> src/questions/q44.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl MedianFinder {
[INFO] [stdout]    | ----------------- associated items in this implementation
[INFO] [stdout] 27 |     /// Creates a new MedianFinder.
[INFO] [stdout] 28 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn add_num(&mut self, num: i32) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn find_median(&self) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q44.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max_sliding_window` is never used
[INFO] [stdout]   --> src/questions/q45.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn max_sliding_window(nums: Vec<i32>, k: i32) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q45.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `num_islands` is never used
[INFO] [stdout]   --> src/questions/q46.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn num_islands(grid: Vec<Vec<char>>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dfs` is never used
[INFO] [stdout]   --> src/questions/q46.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn dfs(grid: &mut Vec<Vec<char>>, i: usize, j: usize, rows: usize, cols: usize) {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q46.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `ladder_length` is never used
[INFO] [stdout]   --> src/questions/q47.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn ladder_length(begin_word: String, end_word: String, word_list: Vec<String>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q47.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LRUCache` is never constructed
[INFO] [stdout]   --> src/questions/q48.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct LRUCache {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get`, and `put` are never used
[INFO] [stdout]   --> src/questions/q48.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl LRUCache {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 34 |     /// Creates a new LRUCache with the given capacity.
[INFO] [stdout] 35 |     pub fn new(capacity: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub fn get(&mut self, key: i32) -> i32 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 58 |     pub fn put(&mut self, key: i32, value: i32) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q48.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `top_k_frequent` is never used
[INFO] [stdout]   --> src/questions/q49.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn top_k_frequent(nums: Vec<i32>, k: i32) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q49.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TrieNode` is never constructed
[INFO] [stdout]   --> src/questions/q50.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct TrieNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q50.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl TrieNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 30 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Trie` is never constructed
[INFO] [stdout]   --> src/questions/q50.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Trie {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, `search`, and `starts_with` are never used
[INFO] [stdout]   --> src/questions/q50.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl Trie {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 43 |     /// Creates a new Trie.
[INFO] [stdout] 44 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub fn insert(&mut self, word: String) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn search(&self, word: String) -> bool {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73 |     pub fn starts_with(&self, prefix: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q50.rs:87:8
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve_n_queens` is never used
[INFO] [stdout]   --> src/questions/q51.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn solve_n_queens(n: i32) -> Vec<Vec<String>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q51.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `total_n_queens` is never used
[INFO] [stdout]   --> src/questions/q52.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn total_n_queens(n: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q52.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `spiral_order` is never used
[INFO] [stdout]   --> src/questions/q53.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn spiral_order(matrix: Vec<Vec<i32>>) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q53.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_matrix` is never used
[INFO] [stdout]   --> src/questions/q54.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn generate_matrix(n: i32) -> Vec<Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q54.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `permute` is never used
[INFO] [stdout]   --> src/questions/q55.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn permute(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `backtrack` is never used
[INFO] [stdout]   --> src/questions/q55.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn backtrack(nums: &mut Vec<i32>, start: usize, res: &mut Vec<Vec<i32>>) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q55.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `combination_sum_iii` is never used
[INFO] [stdout]   --> src/questions/q56.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn combination_sum_iii(k: i32, n: i32) -> Vec<Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `backtrack` is never used
[INFO] [stdout]   --> src/questions/q56.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn backtrack(start: i32, k: usize, n: i32, comb: &mut Vec<i32>, res: &mut Vec<Vec<i32>>) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q56.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `restore_ip_addresses` is never used
[INFO] [stdout]   --> src/questions/q57.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn restore_ip_addresses(s: String) -> Vec<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `backtrack` is never used
[INFO] [stdout]   --> src/questions/q57.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn backtrack(s: &str, start: usize, segments: &mut Vec<String>, res: &mut Vec<String>) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q57.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate_parentheses` is never used
[INFO] [stdout]   --> src/questions/q58.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn generate_parentheses(n: i32) -> Vec<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `backtrack` is never used
[INFO] [stdout]   --> src/questions/q58.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn backtrack(open: i32, close: i32, current: &mut String, res: &mut Vec<String>) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q58.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `permute_unique` is never used
[INFO] [stdout]   --> src/questions/q59.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn permute_unique(mut nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `backtrack` is never used
[INFO] [stdout]   --> src/questions/q59.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn backtrack(nums: &Vec<i32>, used: &mut Vec<bool>, current: &mut Vec<i32>, res: &mut Vec<Vec<i32>>) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q59.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `longest_valid_parentheses` is never used
[INFO] [stdout]   --> src/questions/q60.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn longest_valid_parentheses(s: String) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q60.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListNode` is never constructed
[INFO] [stdout]   --> src/questions/q61.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct ListNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q61.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 20 |     #[inline]
[INFO] [stdout] 21 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rotate_right` is never used
[INFO] [stdout]   --> src/questions/q61.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn rotate_right(mut head: Option<Box<ListNode>>, k: i32) -> Option<Box<ListNode>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q61.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rotate` is never used
[INFO] [stdout]   --> src/questions/q62.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn rotate(nums: &mut Vec<i32>, k: i32) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q62.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_longest_substring` is never used
[INFO] [stdout]   --> src/questions/q63.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q63.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_median_sorted_arrays` is never used
[INFO] [stdout]   --> src/questions/q64.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn find_median_sorted_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q64.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `min_window` is never used
[INFO] [stdout]   --> src/questions/q65.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn min_window(s: String, t: String) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q65.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plus_one` is never used
[INFO] [stdout]   --> src/questions/q66.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn plus_one(mut digits: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q66.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_binary` is never used
[INFO] [stdout]   --> src/questions/q67.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn add_binary(a: String, b: String) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q67.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `length_of_last_word` is never used
[INFO] [stdout]   --> src/questions/q68.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn length_of_last_word(s: String) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q68.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListNode` is never constructed
[INFO] [stdout]   --> src/questions/q69.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct ListNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q69.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 23 |     #[inline]
[INFO] [stdout] 24 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_two_numbers` is never used
[INFO] [stdout]   --> src/questions/q69.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn add_two_numbers(l1: Option<Box<ListNode>>, l2: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q69.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `search` is never used
[INFO] [stdout]   --> src/questions/q70.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn search(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q70.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `merge` is never used
[INFO] [stdout]   --> src/questions/q71.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn merge(nums1: &mut Vec<i32>, m: usize, nums2: &Vec<i32>, n: usize) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q71.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListNode` is never constructed
[INFO] [stdout]   --> src/questions/q72.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct ListNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q72.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 20 |     #[inline]
[INFO] [stdout] 21 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reverse_list` is never used
[INFO] [stdout]   --> src/questions/q72.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn reverse_list(mut head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q72.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListNode` is never constructed
[INFO] [stdout]   --> src/questions/q73.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct ListNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/questions/q73.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 24 |     #[inline]
[INFO] [stdout] 25 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_intersection_node` is never used
[INFO] [stdout]   --> src/questions/q73.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn get_intersection_node<'a>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q73.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sort_colors` is never used
[INFO] [stdout]   --> src/questions/q74.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn sort_colors(nums: &mut Vec<i32>) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q74.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_peak_element` is never used
[INFO] [stdout]   --> src/questions/q75.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn find_peak_element(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q75.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/questions/q61.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     drop(curr);
[INFO] [stdout]    |     ^^^^^----^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          argument has type `&mut Box<q61::ListNode>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 60 -     drop(curr);
[INFO] [stdout] 60 +     let _ = curr;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/questions/q42.rs:33:20
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn reverse_first_k(mut head: Option<Box<ListNode>>, k: usize) -> (Option<Box<ListNode>>, Option<Box<ListNode>>) {
[INFO] [stdout]    |                    ----^^^^
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/questions/q55.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |         for mut v in res.drain(..) {
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `prep` is never used
[INFO] [stdout]   --> src/main.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn prep() -> io::Result<()> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_files` is never used
[INFO] [stdout]   --> src/main.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn create_files(n: usize, pattern: &str) -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q1.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q2.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q3.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q4.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q5.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q6.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q7.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q8.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q9.rs:27:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `val` is never read
[INFO] [stdout]   --> src/questions/q10.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct ListNode {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 16 |     pub val: i32,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ListNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q10.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q11.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `val` is never read
[INFO] [stdout]   --> src/questions/q12.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct TreeNode {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 12 |     pub val: i32,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TreeNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q12.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q13.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q14.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q15.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q16.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q17.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q18.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q19.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q20.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q21.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q22.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q23.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q24.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q25.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q26.rs:54:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q27.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q28.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q29.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q30.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q31.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q32.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q33.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q34.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q35.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q36.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q37.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q38.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q39.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q40.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q41.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q42.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q43.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q44.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q45.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q46.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q47.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q48.rs:80:8
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q49.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q50.rs:87:8
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q51.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q52.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q53.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q54.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q55.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q56.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q57.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q58.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q59.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q60.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q61.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q62.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q63.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q64.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q65.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q66.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q67.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q68.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q69.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q70.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q71.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q72.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q73.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q74.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_question` is never used
[INFO] [stdout]   --> src/questions/q75.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn print_question() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/questions/q61.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     drop(curr);
[INFO] [stdout]    |     ^^^^^----^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          argument has type `&mut Box<q61::ListNode>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 60 -     drop(curr);
[INFO] [stdout] 60 +     let _ = curr;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "40ce6f9a133f8d57761cd61eae2effb871db9a8c331f38f03838d34473152bf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40ce6f9a133f8d57761cd61eae2effb871db9a8c331f38f03838d34473152bf1", kill_on_drop: false }`
[INFO] [stdout] 40ce6f9a133f8d57761cd61eae2effb871db9a8c331f38f03838d34473152bf1
