[INFO] cloning repository https://github.com/magurotuna/leetcode-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/magurotuna/leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagurotuna%2Fleetcode-rust"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagurotuna%2Fleetcode-rust'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 25fe43e23160883aa89080d8558347f027e065a4
[INFO] testing magurotuna/leetcode-rust against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagurotuna%2Fleetcode-rust" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/magurotuna/leetcode-rust on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/magurotuna/leetcode-rust
[INFO] finished tweaking git repo https://github.com/magurotuna/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/magurotuna/leetcode-rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/magurotuna/leetcode-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 10eabe2b2ea20b326503665820d30dd91dac4331c1b3287971c6ed01858f1d1a
[INFO] running `"docker" "start" "-a" "10eabe2b2ea20b326503665820d30dd91dac4331c1b3287971c6ed01858f1d1a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling leetcode-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `num_calculated`
[INFO] [stderr]  --> src/bin/264.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let mut num_calculated = 0;
[INFO] [stderr]   |             ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_calculated`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/121.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `max_profit`
[INFO] [stderr]  --> src/bin/121.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn max_profit(prices: Vec<i32>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/bin/264.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let mut num_calculated = 0;
[INFO] [stderr]   |             ----^^^^^^^^^^^^^^
[INFO] [stderr]   |             |
[INFO] [stderr]   |             help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/134.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `can_complete_circuit`
[INFO] [stderr]  --> src/bin/134.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn can_complete_circuit(gas: Vec<i32>, cost: Vec<i32>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `can_complete_circuit_onepass`
[INFO] [stderr]   --> src/bin/134.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn can_complete_circuit_onepass(gas: Vec<i32>, cost: Vec<i32>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1374.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `generate_the_string`
[INFO] [stderr]  --> src/bin/1374.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn generate_the_string(n: i32) -> String {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/238.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `product_except_self`
[INFO] [stderr]  --> src/bin/238.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn product_except_self(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `constant_space_product_except_self`
[INFO] [stderr]   --> src/bin/238.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn constant_space_product_except_self(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/648.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `replace_words`
[INFO] [stderr]  --> src/bin/648.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn replace_words(dict: Vec<String>, sentence: String) -> String {
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/bin/146.rs:51:23
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn put(&mut self, key: i32, value: i32) {
[INFO] [stderr]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/93.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `restore_ip_addresses`
[INFO] [stderr]  --> src/bin/93.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn restore_ip_addresses(s: String) -> Vec<String> {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_valid`
[INFO] [stderr]   --> src/bin/93.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn is_valid(s: &str) -> bool {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/bin/146.rs:51:33
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn put(&mut self, key: i32, value: i32) {
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `LRUCache`
[INFO] [stderr]   --> src/bin/146.rs:13:8
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct LRUCache {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/bin/146.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn new(capacity: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get`
[INFO] [stderr]   --> src/bin/146.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn get(&mut self, key: i32) -> i32 {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `put`
[INFO] [stderr]   --> src/bin/146.rs:51:8
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn put(&mut self, key: i32, value: i32) {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/20.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_valid`
[INFO] [stderr]  --> src/bin/20.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn is_valid(s: String) -> bool {
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_close`
[INFO] [stderr]   --> src/bin/20.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn is_close(c: char) -> bool {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_open`
[INFO] [stderr]   --> src/bin/20.rs:42:4
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn is_open(c: char) -> bool {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `close`
[INFO] [stderr]   --> src/bin/20.rs:46:4
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn close(b: char) -> char {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/277.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `find_max_form`
[INFO] [stderr]  --> src/bin/277.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn find_max_form(strs: Vec<String>, m: i32, n: i32) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/bin/2.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]   --> src/bin/2.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | struct Solution;
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add_two_numbers`
[INFO] [stderr]   --> src/bin/2.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn add_two_numbers(
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `recursive_add_two_numbers`
[INFO] [stderr]   --> src/bin/2.rs:54:12
[INFO] [stderr]    |
[INFO] [stderr] 54 |     pub fn recursive_add_two_numbers(
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `solve`
[INFO] [stderr]   --> src/bin/2.rs:61:8
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn solve(
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1011.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `ship_within_days`
[INFO] [stderr]  --> src/bin/1011.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn ship_within_days(weights: Vec<i32>, d: i32) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1392.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `longest_prefix`
[INFO] [stderr]  --> src/bin/1392.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn longest_prefix(s: String) -> String {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]   --> src/bin/253.rs:29:14
[INFO] [stderr]    |
[INFO] [stderr] 29 |         for (key, (start, end)) in m.into_iter() {
[INFO] [stderr]    |              ^^^ help: if this is intentional, prefix it with an underscore: `_key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/349.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `intersection`
[INFO] [stderr]  --> src/bin/349.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn intersection(nums1: Vec<i32>, nums2: Vec<i32>) -> Vec<i32> {
[INFO] [stderr]   |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/11.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `max_area`
[INFO] [stderr]  --> src/bin/11.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn max_area(height: Vec<i32>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1375.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `num_times_all_blue`
[INFO] [stderr]  --> src/bin/1375.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn num_times_all_blue(light: Vec<i32>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `segtree_num_times_all_blue`
[INFO] [stderr]   --> src/bin/1375.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn segtree_num_times_all_blue(light: Vec<i32>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/973.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `k_closest`
[INFO] [stderr]  --> src/bin/973.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn k_closest(points: Vec<Vec<i32>>, k: i32) -> Vec<Vec<i32>> {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `MOD` should have a snake case name
[INFO] [stderr]  --> src/bin/1383.rs:8:13
[INFO] [stderr]   |
[INFO] [stderr] 8 |         let MOD = 1_000_000_007;
[INFO] [stderr]   |             ^^^ help: convert the identifier to snake case: `mod`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `search`
[INFO] [stderr]   --> src/bin/208.rs:52:8
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn search(&self, word: String) -> bool {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `starts_with`
[INFO] [stderr]   --> src/bin/208.rs:66:8
[INFO] [stderr]    |
[INFO] [stderr] 66 |     fn starts_with(&self, prefix: String) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/412.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `fizz_buzz`
[INFO] [stderr]  --> src/bin/412.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn fizz_buzz(n: i32) -> Vec<String> {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1376.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `num_of_minutes`
[INFO] [stderr]  --> src/bin/1376.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn num_of_minutes(n: i32, head_id: i32, manager: Vec<i32>, inform_time: Vec<i32>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dfs`
[INFO] [stderr]   --> src/bin/1376.rs:15:4
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn dfs(emp_id: i32, subs: &Vec<Vec<i32>>, inform_time: &[i32], cur_time: i32) -> i32 {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/153.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `find_min`
[INFO] [stderr]  --> src/bin/153.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn find_min(nums: Vec<i32>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `bfs_coin_change`
[INFO] [stderr]   --> src/bin/322.rs:37:12
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn bfs_coin_change(coins: Vec<i32>, amount: i32) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/bin/1381.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new(maxSize: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `push`
[INFO] [stderr]   --> src/bin/1381.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn push(&mut self, x: i32) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `pop`
[INFO] [stderr]   --> src/bin/1381.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn pop(&mut self) -> i32 {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `increment`
[INFO] [stderr]   --> src/bin/1381.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn increment(&mut self, k: i32, val: i32) {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `maxSize` should have a snake case name
[INFO] [stderr]   --> src/bin/1381.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn new(maxSize: i32) -> Self {
[INFO] [stderr]    |            ^^^^^^^ help: convert the identifier to snake case: `max_size`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1404.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `num_steps`
[INFO] [stderr]  --> src/bin/1404.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn num_steps(s: String) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/3.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `length_of_longest_substring`
[INFO] [stderr]  --> src/bin/3.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `slow_length_of_longest_substring`
[INFO] [stderr]   --> src/bin/3.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn slow_length_of_longest_substring(s: String) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1377.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `frog_position`
[INFO] [stderr]  --> src/bin/1377.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn frog_position(n: i32, edges: Vec<Vec<i32>>, t: i32, target: i32) -> f64 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/127.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `ladder_length`
[INFO] [stderr]  --> src/bin/127.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn ladder_length(begin_word: String, end_word: String, word_list: Vec<String>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `bfs_ladder_length`
[INFO] [stderr]   --> src/bin/127.rs:47:12
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn bfs_ladder_length(begin_word: String, end_word: String, word_list: Vec<String>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dist`
[INFO] [stderr]   --> src/bin/127.rs:84:4
[INFO] [stderr]    |
[INFO] [stderr] 84 | fn dist(x: &[char], y: &[char]) -> i32 {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/881.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `num_rescue_boats`
[INFO] [stderr]  --> src/bin/881.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn num_rescue_boats(people: Vec<i32>, limit: i32) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/210.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `find_order`
[INFO] [stderr]  --> src/bin/210.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn find_order(num_courses: i32, prerequisites: Vec<Vec<i32>>) -> Vec<i32> {
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/bin/779.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |         x => {
[INFO] [stderr]    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/779.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `kth_grammar`
[INFO] [stderr]  --> src/bin/779.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn kth_grammar(n: i32, k: i32) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/739.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/bin/779.rs:15:4
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn solve(row: i32, col: i32) -> i32 {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `daily_temperatures`
[INFO] [stderr]  --> src/bin/739.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn daily_temperatures(t: Vec<i32>) -> Vec<i32> {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/986.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `interval_intersection`
[INFO] [stderr]  --> src/bin/986.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn interval_intersection(a: Vec<Vec<i32>>, b: Vec<Vec<i32>>) -> Vec<Vec<i32>> {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/123.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `max_profit`
[INFO] [stderr]  --> src/bin/123.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn max_profit(prices: Vec<i32>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `iter`
[INFO] [stderr]   --> src/bin/394.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut iter = substr.into_iter();
[INFO] [stderr]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `end_index` is never read
[INFO] [stderr]   --> src/bin/394.rs:32:17
[INFO] [stderr]    |
[INFO] [stderr] 32 |             let mut end_index = index;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/394.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut iter = substr.into_iter();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/394.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `decode_string`
[INFO] [stderr]  --> src/bin/394.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn decode_string(s: String) -> String {
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `solve`
[INFO] [stderr]   --> src/bin/394.rs:12:4
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn solve(ans: &mut String, substr: &[char]) {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/bin/1391.rs:5:13
[INFO] [stderr]   |
[INFO] [stderr] 5 |         let mut h = 0;
[INFO] [stderr]   |             ----^
[INFO] [stderr]   |             |
[INFO] [stderr]   |             help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/bin/1391.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |         let mut w = 0;
[INFO] [stderr]   |             ----^
[INFO] [stderr]   |             |
[INFO] [stderr]   |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/695.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `max_area_of_island`
[INFO] [stderr]  --> src/bin/695.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn max_area_of_island(grid: Vec<Vec<i32>>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dfs`
[INFO] [stderr]   --> src/bin/695.rs:24:4
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn dfs(
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ExamRoom`
[INFO] [stderr]  --> src/bin/855.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct ExamRoom {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/bin/855.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn new(N: i32) -> Self {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `seat`
[INFO] [stderr]   --> src/bin/855.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn seat(&mut self) -> i32 {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `leave`
[INFO] [stderr]   --> src/bin/855.rs:51:8
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn leave(&mut self, p: i32) {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]  --> src/bin/855.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn new(N: i32) -> Self {
[INFO] [stderr]   |            ^ help: convert the identifier to snake case: `n`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]  --> src/bin/1390.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 |             let mut s = 0;
[INFO] [stderr]   |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cnt`
[INFO] [stderr]  --> src/bin/1390.rs:9:17
[INFO] [stderr]   |
[INFO] [stderr] 9 |             let mut cnt = 1;
[INFO] [stderr]   |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cnt`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/bin/1390.rs:8:17
[INFO] [stderr]   |
[INFO] [stderr] 8 |             let mut s = 0;
[INFO] [stderr]   |                 ----^
[INFO] [stderr]   |                 |
[INFO] [stderr]   |                 help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/bin/1390.rs:9:17
[INFO] [stderr]   |
[INFO] [stderr] 9 |             let mut cnt = 1;
[INFO] [stderr]   |                 ----^^^
[INFO] [stderr]   |                 |
[INFO] [stderr]   |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/929.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `num_unique_emails`
[INFO] [stderr]   --> src/bin/929.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn num_unique_emails(emails: Vec<String>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/228.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `summary_ranges`
[INFO] [stderr]  --> src/bin/228.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn summary_ranges(nums: Vec<i32>) -> Vec<String> {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `valley` is never read
[INFO] [stderr]  --> src/bin/122.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |         let mut valley = prices[0];
[INFO] [stderr]   |             ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `peek` is never read
[INFO] [stderr]   --> src/bin/122.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 |         let mut peek = prices[0];
[INFO] [stderr]    |             ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `valley` is never read
[INFO] [stderr]   --> src/bin/122.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |             valley = peek;
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/122.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `max_profit`
[INFO] [stderr]  --> src/bin/122.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn max_profit(prices: Vec<i32>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `simplest_max_profit`
[INFO] [stderr]   --> src/bin/122.rs:27:12
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn simplest_max_profit(prices: Vec<i32>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `brute_force_max_profit`
[INFO] [stderr]   --> src/bin/122.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn brute_force_max_profit(prices: Vec<i32>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calc`
[INFO] [stderr]   --> src/bin/122.rs:45:4
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn calc(prices: &[i32], s: usize) -> i32 {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/136.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `single_number`
[INFO] [stderr]  --> src/bin/136.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn single_number(nums: Vec<i32>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `bit_manipulation`
[INFO] [stderr]   --> src/bin/136.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn bit_manipulation(nums: Vec<i32>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1342.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `number_of_steps`
[INFO] [stderr]  --> src/bin/1342.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn number_of_steps(num: i32) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `1406`
[INFO] [stderr]  --> src/bin/1406.rs:1:9
[INFO] [stderr]   |
[INFO] [stderr] 1 | // TODO
[INFO] [stderr]   |         ^ consider adding a `main` function to `src/bin/1406.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `leetcode-rust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: struct is never constructed: `UndergroundSystem`
[INFO] [stderr]  --> src/bin/1396.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct UndergroundSystem {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/bin/1396.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn new() -> Self {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `check_in`
[INFO] [stderr]   --> src/bin/1396.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn check_in(&mut self, id: i32, station_name: String, t: i32) {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `check_out`
[INFO] [stderr]   --> src/bin/1396.rs:20:8
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn check_out(&mut self, id: i32, station_name: String, t: i32) {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_average_time`
[INFO] [stderr]   --> src/bin/1396.rs:27:8
[INFO] [stderr]    |
[INFO] [stderr] 27 |     fn get_average_time(&self, start_station: String, end_station: String) -> f64 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `two_sum`
[INFO] [stderr]  --> src/bin/1.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stderr]   |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `binary_search_two_sum`
[INFO] [stderr]   --> src/bin/1.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn binary_search_two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `brute_force_two_sum`
[INFO] [stderr]   --> src/bin/1.rs:53:12
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn brute_force_two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1394.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `find_lucky`
[INFO] [stderr]  --> src/bin/1394.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn find_lucky(arr: Vec<i32>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/33.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `search`
[INFO] [stderr]  --> src/bin/33.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn search(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "10eabe2b2ea20b326503665820d30dd91dac4331c1b3287971c6ed01858f1d1a"`
[INFO] running `"docker" "rm" "-f" "10eabe2b2ea20b326503665820d30dd91dac4331c1b3287971c6ed01858f1d1a"`
[INFO] [stdout] 10eabe2b2ea20b326503665820d30dd91dac4331c1b3287971c6ed01858f1d1a