[INFO] cloning repository https://github.com/oYOvOYo/Rust.Playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/oYOvOYo/Rust.Playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FoYOvOYo%2FRust.Playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FoYOvOYo%2FRust.Playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 576097d03bbb045060efae2a54ae803e491e1aa7
[INFO] checking oYOvOYo/Rust.Playground against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FoYOvOYo%2FRust.Playground" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/oYOvOYo/Rust.Playground on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/oYOvOYo/Rust.Playground
[INFO] finished tweaking git repo https://github.com/oYOvOYo/Rust.Playground
[INFO] tweaked toml for git repo https://github.com/oYOvOYo/Rust.Playground written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/oYOvOYo/Rust.Playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17d084b55e5ba806b87617624d5875a3c5d4ee0ef18c9098278ab1df71781ac0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "17d084b55e5ba806b87617624d5875a3c5d4ee0ef18c9098278ab1df71781ac0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17d084b55e5ba806b87617624d5875a3c5d4ee0ef18c9098278ab1df71781ac0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17d084b55e5ba806b87617624d5875a3c5d4ee0ef18c9098278ab1df71781ac0", kill_on_drop: false }`
[INFO] [stdout] 17d084b55e5ba806b87617624d5875a3c5d4ee0ef18c9098278ab1df71781ac0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a52c63a5f6e59c93886df39faaf8850c24a8128e61600b8e9b029b8ca636cf5d
[INFO] running `Command { std: "docker" "start" "-a" "a52c63a5f6e59c93886df39faaf8850c24a8128e61600b8e9b029b8ca636cf5d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/leetcode.rs:159:12
[INFO] [stdout]     |
[INFO] [stdout] 159 |         if (i != last_num) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/leetcode.rs:159:12
[INFO] [stdout]     |
[INFO] [stdout] 159 |         if (i != last_num) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sorted_set` is never read
[INFO] [stdout]    --> src/leetcode.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |     let mut sorted_set: Vec<i32> = Vec::new();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> src/leetcode.rs:197:13
[INFO] [stdout]     |
[INFO] [stdout] 197 |         for j in 0..nums[2 * i] {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/leetcode.rs:266:9
[INFO] [stdout]     |
[INFO] [stdout] 266 |     let mut list: Vec<char> = s.clone().chars().collect();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/leetcode.rs:316:9
[INFO] [stdout]     |
[INFO] [stdout] 316 |     let mut list:Vec<char> = s.chars().collect();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `running_sum`
[INFO] [stdout]  --> src/leetcode.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn running_sum(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `kids_with_candies`
[INFO] [stdout]   --> src/leetcode.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn kids_with_candies(candies: Vec<i32>, extra_candies: i32) -> Vec<bool> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `SubrectangleQueries`
[INFO] [stdout]   --> src/leetcode.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct SubrectangleQueries {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/leetcode.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn new(rectangle: Vec<Vec<i32>>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_subrectangle`
[INFO] [stdout]   --> src/leetcode.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn update_subrectangle(&mut self, row1: i32, col1: i32, row2: i32, col2: i32, new_value: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sorted_set` is never read
[INFO] [stdout]    --> src/leetcode.rs:127:9
[INFO] [stdout]     |
[INFO] [stdout] 127 |     let mut sorted_set: Vec<i32> = Vec::new();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_value`
[INFO] [stdout]   --> src/leetcode.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn get_value(&self, row: i32, col: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shuffle`
[INFO] [stdout]   --> src/leetcode.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn shuffle(nums: Vec<i32>, n: i32) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> src/leetcode.rs:197:13
[INFO] [stdout]     |
[INFO] [stdout] 197 |         for j in 0..nums[2 * i] {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `restore_string`
[INFO] [stdout]   --> src/leetcode.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn restore_string(s: String, indices: Vec<i32>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `number_of_steps`
[INFO] [stdout]   --> src/leetcode.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn number_of_steps(num: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `num_identical_pairs`
[INFO] [stdout]   --> src/leetcode.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub fn num_identical_pairs(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max_width_of_vertical_area`
[INFO] [stdout]    --> src/leetcode.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 | pub fn max_width_of_vertical_area(points: Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `smaller_numbers_than_current`
[INFO] [stdout]    --> src/leetcode.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub fn smaller_numbers_than_current(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subtract_product_and_sum`
[INFO] [stdout]    --> src/leetcode.rs:173:8
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub fn subtract_product_and_sum(n: i32) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decompress_rl_elist`
[INFO] [stdout]    --> src/leetcode.rs:193:8
[INFO] [stdout]     |
[INFO] [stdout] 193 | pub fn decompress_rl_elist(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ParkingSystem`
[INFO] [stdout]    --> src/leetcode.rs:205:8
[INFO] [stdout]     |
[INFO] [stdout] 205 | struct ParkingSystem {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/leetcode.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn new(big: i32, medium: i32, small: i32) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_car`
[INFO] [stdout]    --> src/leetcode.rs:220:8
[INFO] [stdout]     |
[INFO] [stdout] 220 |     fn add_car(&mut self, car_type: i32) -> bool {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/leetcode.rs:244:8
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn new(val: i32) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_decimal_value`
[INFO] [stdout]    --> src/leetcode.rs:249:8
[INFO] [stdout]     |
[INFO] [stdout] 249 | pub fn get_decimal_value(head: Option<Box<ListNode>>) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `balanced_string_split`
[INFO] [stdout]    --> src/leetcode.rs:262:8
[INFO] [stdout]     |
[INFO] [stdout] 262 | pub fn balanced_string_split(s: String) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `xor_operation`
[INFO] [stdout]    --> src/leetcode.rs:294:8
[INFO] [stdout]     |
[INFO] [stdout] 294 | pub fn xor_operation(n: i32, start: i32) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_target_array`
[INFO] [stdout]    --> src/leetcode.rs:304:8
[INFO] [stdout]     |
[INFO] [stdout] 304 | pub fn create_target_array(nums: Vec<i32>, index: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max_depth`
[INFO] [stdout]    --> src/leetcode.rs:313:8
[INFO] [stdout]     |
[INFO] [stdout] 313 | pub fn max_depth(s: String) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/leetcode.rs:266:9
[INFO] [stdout]     |
[INFO] [stdout] 266 |     let mut list: Vec<char> = s.clone().chars().collect();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/leetcode.rs:316:9
[INFO] [stdout]     |
[INFO] [stdout] 316 |     let mut list:Vec<char> = s.chars().collect();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `running_sum`
[INFO] [stdout]  --> src/leetcode.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn running_sum(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `kids_with_candies`
[INFO] [stdout]   --> src/leetcode.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn kids_with_candies(candies: Vec<i32>, extra_candies: i32) -> Vec<bool> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `SubrectangleQueries`
[INFO] [stdout]   --> src/leetcode.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct SubrectangleQueries {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/leetcode.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn new(rectangle: Vec<Vec<i32>>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `update_subrectangle`
[INFO] [stdout]   --> src/leetcode.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn update_subrectangle(&mut self, row1: i32, col1: i32, row2: i32, col2: i32, new_value: i32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_value`
[INFO] [stdout]   --> src/leetcode.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn get_value(&self, row: i32, col: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shuffle`
[INFO] [stdout]   --> src/leetcode.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn shuffle(nums: Vec<i32>, n: i32) -> Vec<i32> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `restore_string`
[INFO] [stdout]   --> src/leetcode.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn restore_string(s: String, indices: Vec<i32>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `number_of_steps`
[INFO] [stdout]   --> src/leetcode.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn number_of_steps(num: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `num_identical_pairs`
[INFO] [stdout]   --> src/leetcode.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 | pub fn num_identical_pairs(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max_width_of_vertical_area`
[INFO] [stdout]    --> src/leetcode.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 | pub fn max_width_of_vertical_area(points: Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `smaller_numbers_than_current`
[INFO] [stdout]    --> src/leetcode.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub fn smaller_numbers_than_current(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `subtract_product_and_sum`
[INFO] [stdout]    --> src/leetcode.rs:173:8
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub fn subtract_product_and_sum(n: i32) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decompress_rl_elist`
[INFO] [stdout]    --> src/leetcode.rs:193:8
[INFO] [stdout]     |
[INFO] [stdout] 193 | pub fn decompress_rl_elist(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ParkingSystem`
[INFO] [stdout]    --> src/leetcode.rs:205:8
[INFO] [stdout]     |
[INFO] [stdout] 205 | struct ParkingSystem {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/leetcode.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn new(big: i32, medium: i32, small: i32) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_car`
[INFO] [stdout]    --> src/leetcode.rs:220:8
[INFO] [stdout]     |
[INFO] [stdout] 220 |     fn add_car(&mut self, car_type: i32) -> bool {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/leetcode.rs:244:8
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn new(val: i32) -> Self {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_decimal_value`
[INFO] [stdout]    --> src/leetcode.rs:249:8
[INFO] [stdout]     |
[INFO] [stdout] 249 | pub fn get_decimal_value(head: Option<Box<ListNode>>) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `balanced_string_split`
[INFO] [stdout]    --> src/leetcode.rs:262:8
[INFO] [stdout]     |
[INFO] [stdout] 262 | pub fn balanced_string_split(s: String) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `xor_operation`
[INFO] [stdout]    --> src/leetcode.rs:294:8
[INFO] [stdout]     |
[INFO] [stdout] 294 | pub fn xor_operation(n: i32, start: i32) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_target_array`
[INFO] [stdout]    --> src/leetcode.rs:304:8
[INFO] [stdout]     |
[INFO] [stdout] 304 | pub fn create_target_array(nums: Vec<i32>, index: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max_depth`
[INFO] [stdout]    --> src/leetcode.rs:313:8
[INFO] [stdout]     |
[INFO] [stdout] 313 | pub fn max_depth(s: String) -> i32 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.89s
[INFO] running `Command { std: "docker" "inspect" "a52c63a5f6e59c93886df39faaf8850c24a8128e61600b8e9b029b8ca636cf5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a52c63a5f6e59c93886df39faaf8850c24a8128e61600b8e9b029b8ca636cf5d", kill_on_drop: false }`
[INFO] [stdout] a52c63a5f6e59c93886df39faaf8850c24a8128e61600b8e9b029b8ca636cf5d