[INFO] cloning repository https://github.com/Light-Keeper/rust-leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Light-Keeper/rust-leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLight-Keeper%2Frust-leetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLight-Keeper%2Frust-leetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5d12ac95769350347e30d5dc5b689c1ea7254fe
[INFO] checking Light-Keeper/rust-leetcode against try#14e4661efa5acbf985e4fe564baae04683366cc1 for pr-157696
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLight-Keeper%2Frust-leetcode" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Light-Keeper/rust-leetcode
[INFO] finished tweaking git repo https://github.com/Light-Keeper/rust-leetcode
[INFO] tweaked toml for git repo https://github.com/Light-Keeper/rust-leetcode written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Light-Keeper/rust-leetcode on toolchain 14e4661efa5acbf985e4fe564baae04683366cc1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+14e4661efa5acbf985e4fe564baae04683366cc1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Light-Keeper/rust-leetcode 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" "+14e4661efa5acbf985e4fe564baae04683366cc1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 91027b6123d0df968a21d4e8e3a85a4467cb7e56c7ca8ee1ce4971b1d50df28f
[INFO] running `Command { std: "docker" "start" "91027b6123d0df968a21d4e8e3a85a4467cb7e56c7ca8ee1ce4971b1d50df28f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "91027b6123d0df968a21d4e8e3a85a4467cb7e56c7ca8ee1ce4971b1d50df28f" "/opt/rustwide/cargo-home/bin/cargo" "+14e4661efa5acbf985e4fe564baae04683366cc1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91027b6123d0df968a21d4e8e3a85a4467cb7e56c7ca8ee1ce4971b1d50df28f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "91027b6123d0df968a21d4e8e3a85a4467cb7e56c7ca8ee1ce4971b1d50df28f" "/opt/rustwide/cargo-home/bin/cargo" "+14e4661efa5acbf985e4fe564baae04683366cc1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking leetcode-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Person` is never used
[INFO] [stdout]  --> src/experiments/inherit.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait Person {
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Student` is never used
[INFO] [stdout]  --> src/experiments/inherit.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait Student: Person {
[INFO] [stdout]   |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Programmer` is never used
[INFO] [stdout]  --> src/experiments/inherit.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | trait Programmer {
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ComSciStudent` is never used
[INFO] [stdout]   --> src/experiments/inherit.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | trait ComSciStudent: Student + Programmer {}
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StudentIml` is never constructed
[INFO] [stdout]   --> src/experiments/inherit.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct StudentIml {}
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `programmer_report` is never used
[INFO] [stdout]   --> src/experiments/inherit.rs:37:4
[INFO] [stdout]    |
[INFO] [stdout] 37 | fn programmer_report(p: &dyn Programmer) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `memo` is never used
[INFO] [stdout]  --> src/experiments/memoize.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn memo<A: Copy + PartialEq, B: Copy>(mut f: impl FnMut(A) -> B) -> impl FnMut(A) -> B {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/tasks.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct Solution;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `two_sum` is never used
[INFO] [stdout]  --> src/tasks/t0001_two_sum.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 6 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `unique_paths_with_obstacles` is never used
[INFO] [stdout]  --> src/tasks/t0065_unique_path.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn unique_paths_with_obstacles(obstacle_grid: Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `search_matrix` is never used
[INFO] [stdout]  --> src/tasks/t0074_search_matrix.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn search_matrix(matrix: Vec<Vec<i32>>, target: i32) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `maximal_rectangle` is never used
[INFO] [stdout]  --> src/tasks/t0085_maximal_rectangle.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn maximal_rectangle(matrix: Vec<Vec<char>>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `gray_code` is never used
[INFO] [stdout]  --> src/tasks/t0089_gray_code.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn gray_code(n: i32) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `num_decodings` is never used
[INFO] [stdout]  --> src/tasks/t0091_decode_ways.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn num_decodings(s: String) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `reverse_between` and `slice_to_list` are never used
[INFO] [stdout]   --> src/tasks/t0092_reverse_linked_list_ii.rs:4:12
[INFO] [stdout]    |
[INFO] [stdout]  3 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  4 |     pub fn reverse_between(
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn slice_to_list(values: &[i32]) -> Option<Box<ListNode>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListNode` is never constructed
[INFO] [stdout]   --> src/tasks/t0092_reverse_linked_list_ii.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct ListNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `restore_ip_addresses` and `find_ways_to_split_digits` are never used
[INFO] [stdout]   --> src/tasks/t0093_restore_ip_addresses.rs:4:12
[INFO] [stdout]    |
[INFO] [stdout]  3 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  4 |     pub fn restore_ip_addresses(s: String) -> Vec<String> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     fn find_ways_to_split_digits(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `generate_trees` is never used
[INFO] [stdout]  --> src/tasks/t0095_generate_trees.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 6 |     pub fn generate_trees(n: i32) -> Vec<Option<Rc<RefCell<TreeNode>>>> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/tasks/t0095_generate_trees.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `num_trees` is never used
[INFO] [stdout]  --> src/tasks/t0096_num_trees.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 2 |     pub fn num_trees(n: i32) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `is_valid_bst` and `is_valid_with_constraint` are never used
[INFO] [stdout]   --> src/tasks/t0098_validate_binary_search_tree.rs:8:12
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  8 |     pub fn is_valid_bst(root: Option<Rc<RefCell<TreeNode>>>) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn is_valid_with_constraint(range: Range<i64>, node: Option<Rc<RefCell<TreeNode>>>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]   --> src/tasks/t0098_validate_binary_search_tree.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct TreeNode {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/tasks/t0098_validate_binary_search_tree.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl TreeNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 40 |     #[inline]
[INFO] [stdout] 41 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]  --> src/tasks/t0101_is_symmetric.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct TreeNode {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `is_symmetric` and `sync_nodes_review` are never used
[INFO] [stdout]   --> src/tasks/t0101_is_symmetric.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 20 |     pub fn is_symmetric(root: Option<Rc<RefCell<TreeNode>>>) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn sync_nodes_review(a: Option<Rc<RefCell<TreeNode>>>, b: Option<Rc<RefCell<TreeNode>>>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TreeNode` is never constructed
[INFO] [stdout]  --> src/tasks/t0114_flatten_bin_tree.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct TreeNode {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `flatten` and `flatten_with_suffix` are never used
[INFO] [stdout]   --> src/tasks/t0114_flatten_bin_tree.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout] 16 |     pub fn flatten(root: &mut Option<Rc<RefCell<TreeNode>>>) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn flatten_with_suffix(root: &mut Option<Rc<RefCell<TreeNode>>>, suffux: Option<Rc<RefCell<TreeNode>>>) -> Option<Rc<RefCell<Tre...
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get_row` is never used
[INFO] [stdout]  --> src/tasks/t0119_paskal_triangle_2.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn get_row(row_index: i32) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `is_palindrome` and `filtered_iterator` are never used
[INFO] [stdout]   --> src/tasks/t0125_is_palindrome.rs:7:12
[INFO] [stdout]    |
[INFO] [stdout]  6 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  7 |     pub fn is_palindrome(s: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn filtered_iterator(src: impl Iterator<Item = u8>) -> impl Iterator<Item = u8> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `solve` and `dfs` are never used
[INFO] [stdout]   --> src/tasks/t0130_surrounded_regions.rs:4:12
[INFO] [stdout]    |
[INFO] [stdout]  3 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  4 |     pub fn solve(board: &mut Vec<Vec<char>>) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     fn dfs(board: &mut Vec<Vec<char>>, i: usize, j: usize) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ListNode` is never constructed
[INFO] [stdout]  --> src/tasks/t0147_insertion_sort_list.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct ListNode {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `insertion_sort_list` is never used
[INFO] [stdout]   --> src/tasks/t0147_insertion_sort_list.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn insertion_sort_list(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]  --> src/tasks/t0149_max_points_on_line.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Point {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Line` is never constructed
[INFO] [stdout]   --> src/tasks/t0149_max_points_on_line.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct Line {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `gcd` are never used
[INFO] [stdout]   --> src/tasks/t0149_max_points_on_line.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Line {
[INFO] [stdout]    | --------- associated functions in this implementation
[INFO] [stdout] 18 |     fn new(mut a: Point, b: Point) -> Line {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn gcd(mut a: i32, mut b: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `max_points` is never used
[INFO] [stdout]   --> src/tasks/t0149_max_points_on_line.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 64 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 65 |     pub fn max_points(points: Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `eval_rpn` is never used
[INFO] [stdout]  --> src/tasks/t0150_evaluate_rpn.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn eval_rpn(tokens: Vec<String>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MinStack` is never constructed
[INFO] [stdout]  --> src/tasks/t0155_min_stack.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct MinStack {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `push`, `pop`, `top`, and `get_min` are never used
[INFO] [stdout]   --> src/tasks/t0155_min_stack.rs:8:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl MinStack {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout]  8 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn push(&mut self, val: i32) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     fn pop(&mut self) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn top(&self) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     fn get_min(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BaseCache` is never constructed
[INFO] [stdout]  --> src/tasks/t0196_lru_cache.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct BaseCache<K, V> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get`, and `put` are never used
[INFO] [stdout]   --> src/tasks/t0196_lru_cache.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | / impl<K, V> BaseCache<K, V>
[INFO] [stdout] 14 | | where
[INFO] [stdout] 15 | |     K: Eq + Copy + Hash,
[INFO] [stdout] 16 | |     V: Copy,
[INFO] [stdout]    | |____________- associated items in this implementation
[INFO] [stdout] 17 |   {
[INFO] [stdout] 18 |       fn new(capacity: usize) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |       fn get(&self, key: K) -> Option<V> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |       fn put(&mut self, key: K, value: V) {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LRUCache` is never constructed
[INFO] [stdout]   --> src/tasks/t0196_lru_cache.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 | struct LRUCache {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get`, and `put` are never used
[INFO] [stdout]   --> src/tasks/t0196_lru_cache.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | impl LRUCache {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 70 |     fn new(capacity: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     fn get(&self, key: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     fn put(&mut self, key: i32, value: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `majority_element` is never used
[INFO] [stdout]  --> src/tasks/t0229_majority_element.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn majority_element(mut nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `find_duplicate` is never used
[INFO] [stdout]  --> src/tasks/t0287_find_duplicate.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 5 |     pub fn find_duplicate(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `change` is never used
[INFO] [stdout]  --> src/tasks/t0518_coin_change_2.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn change(amount: i32, mut coins: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `reverse_words` is never used
[INFO] [stdout]  --> src/tasks/t0557_reverse_words.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn reverse_words(s: String) -> String {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TopLevelEntity` is never used
[INFO] [stdout]  --> src/tasks/t0706_my_hash_map.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum TopLevelEntity {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyHashMap` is never constructed
[INFO] [stdout]   --> src/tasks/t0706_my_hash_map.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct MyHashMap {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hash` is never used
[INFO] [stdout]   --> src/tasks/t0706_my_hash_map.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn hash(key: i32) -> (usize, usize) {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `put`, `get`, and `remove` are never used
[INFO] [stdout]   --> src/tasks/t0706_my_hash_map.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl MyHashMap {
[INFO] [stdout]    | -------------- associated items in this implementation
[INFO] [stdout] 24 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     fn put(&mut self, key: i32, value: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     fn get(&self, key: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 80 |     fn remove(&mut self, key: i32) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `backspace_compare` and `format` are never used
[INFO] [stdout]  --> src/tasks/t0844_backspace_compare.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated functions in this implementation
[INFO] [stdout] 4 |     pub fn backspace_compare(s: String, t: String) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 8 |     fn format(s: String) -> Vec<u8> {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `is_monotonic` is never used
[INFO] [stdout]  --> src/tasks/t0896_is_monotonic.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn is_monotonic(nums: Vec<i32>) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `sort_array_by_parity` is never used
[INFO] [stdout]  --> src/tasks/t0905_sort_array_by_parity.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn sort_array_by_parity(mut nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `longest_str_chain` and `is_predecessor` are never used
[INFO] [stdout]   --> src/tasks/t1048_longest_str_chain.rs:4:12
[INFO] [stdout]    |
[INFO] [stdout]  3 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  4 |     pub fn longest_str_chain(mut words: Vec<String>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn is_predecessor(a: &str, b: &str) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `k_weakest_rows` is never used
[INFO] [stdout]  --> src/tasks/t1337_k_weakest_rows.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn k_weakest_rows(mat: Vec<Vec<i32>>, k: i32) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `validate_binary_tree_nodes` is never used
[INFO] [stdout]  --> src/tasks/t1361_validate_binary_tree_nodes.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn validate_binary_tree_nodes(
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `num_identical_pairs` is never used
[INFO] [stdout]  --> src/tasks/t1512_num_identical_pairs.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn num_identical_pairs(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `min_cost_connect_points`, `find_island_number`, and `optimize_path` are never used
[INFO] [stdout]   --> src/tasks/t1584_min_cost_connect_points.rs:4:12
[INFO] [stdout]    |
[INFO] [stdout]  3 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  4 |     pub fn min_cost_connect_points(points: Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn find_island_number(islands: &mut Vec<usize>, mut i: usize) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 54 |     fn optimize_path(islands: &mut Vec<usize>, mut i: usize, target: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `minimum_effort_path` is never used
[INFO] [stdout]  --> src/tasks/t1631_minimum_effort_path.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 6 |     pub fn minimum_effort_path(mut heights: Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `close_strings`, `letters`, and `counters` are never used
[INFO] [stdout]   --> src/tasks/t1657_close_strings.rs:6:12
[INFO] [stdout]    |
[INFO] [stdout]  5 | impl Solution {
[INFO] [stdout]    | ------------- associated functions in this implementation
[INFO] [stdout]  6 |     pub fn close_strings(word1: String, word2: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn letters(workd: &String) -> [bool; 30] {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     fn counters(workd: &String) -> [usize; 30] {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `max_frequency` is never used
[INFO] [stdout]  --> src/tasks/t1838_max_frequency.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn max_frequency(mut nums: Vec<i32>, k: i32) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `winner_of_game` is never used
[INFO] [stdout]  --> src/tasks/t2038_winner_of_game.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |     pub fn winner_of_game(colors: String) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DataStream` is never constructed
[INFO] [stdout]  --> src/tasks/t2526_consecutive_integers.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct DataStream {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `consec` are never used
[INFO] [stdout]   --> src/tasks/t2526_consecutive_integers.rs:8:8
[INFO] [stdout]    |
[INFO] [stdout]  7 | impl DataStream {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout]  8 |     fn new(value: i32, k: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn consec(&mut self, num: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `RandomizedSet` is never constructed
[INFO] [stdout]  --> src/tasks/t0380_randomized_set.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct RandomizedSet {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `insert`, `remove`, and `get_random` are never used
[INFO] [stdout]   --> src/tasks/t0380_randomized_set.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl RandomizedSet {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 14 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     fn insert(&mut self, val: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn remove(&mut self, val: i32) -> bool {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     fn get_random(&self) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `unique_occurrences` is never used
[INFO] [stdout]  --> src/tasks/t1207_unique_occurrences.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn unique_occurrences(arr: Vec<i32>) -> bool {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `min_falling_path_sum` is never used
[INFO] [stdout]  --> src/tasks/t0931_min_falling_path_sum.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 5 |     pub fn min_falling_path_sum(mut matrix: Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Person` is never used
[INFO] [stdout]  --> src/experiments/inherit.rs:1:7
[INFO] [stdout]   |
[INFO] [stdout] 1 | trait Person {
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Student` is never used
[INFO] [stdout]  --> src/experiments/inherit.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait Student: Person {
[INFO] [stdout]   |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ComSciStudent` is never used
[INFO] [stdout]   --> src/experiments/inherit.rs:13:7
[INFO] [stdout]    |
[INFO] [stdout] 13 | trait ComSciStudent: Student + Programmer {}
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `Command { std: "docker" "inspect" "91027b6123d0df968a21d4e8e3a85a4467cb7e56c7ca8ee1ce4971b1d50df28f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91027b6123d0df968a21d4e8e3a85a4467cb7e56c7ca8ee1ce4971b1d50df28f", kill_on_drop: false }`
[INFO] [stdout] 91027b6123d0df968a21d4e8e3a85a4467cb7e56c7ca8ee1ce4971b1d50df28f
