[INFO] updating cached repository https://github.com/magurotuna/leetcode-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 25fe43e23160883aa89080d8558347f027e065a4
[INFO] checking magurotuna/leetcode-rust against try#d93021f5faa26e4f9d2719e79f9974e06aa40e17 for pr-71873
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagurotuna%2Fleetcode-rust" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/magurotuna/leetcode-rust on toolchain d93021f5faa26e4f9d2719e79f9974e06aa40e17
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "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-11/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" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=forbid" "-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" "+d93021f5faa26e4f9d2719e79f9974e06aa40e17" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a04f4a4120b677179937c82a2b4b1826566a778daf0f9a1c2897d14bc4d65970
[INFO] running `"docker" "start" "-a" "a04f4a4120b677179937c82a2b4b1826566a778daf0f9a1c2897d14bc4d65970"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[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] [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: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]   --> src/bin/111.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 21 | 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: `min_depth`
[INFO] [stderr]   --> src/bin/111.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn min_depth(root: Option<Rc<RefCell<TreeNode>>>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_node`
[INFO] [stderr]   --> src/bin/111.rs:57:4
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn make_node(val: i32) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_node_with`
[INFO] [stderr]   --> src/bin/111.rs:61:4
[INFO] [stderr]    |
[INFO] [stderr] 61 | fn make_node_with(
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[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: variant is never constructed: `None`
[INFO] [stderr]  --> src/bin/348.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     None,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Circle`
[INFO] [stderr]  --> src/bin/348.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Circle, // player 1
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Cross`
[INFO] [stderr]  --> src/bin/348.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Cross,  // player 2
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TicTacToe`
[INFO] [stderr]  --> src/bin/348.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | struct TicTacToe {
[INFO] [stderr]   |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/bin/348.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn new(n: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `make_a_move`
[INFO] [stderr]   --> src/bin/348.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn make_a_move(&mut self, row: i32, col: i32, player: i32) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `check`
[INFO] [stderr]   --> src/bin/348.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn check(&self, row: i32, col: i32, player: i32) -> bool {
[INFO] [stderr]    |        ^^^^^
[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: unused import: `min`
[INFO] [stderr]   --> src/bin/300.rs:35:29
[INFO] [stderr]    |
[INFO] [stderr] 35 |         use std::cmp::{max, min};
[INFO] [stderr]    |                             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` 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: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable `MOD` should have a snake case name
[INFO] [stderr]  --> src/bin/1397.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |         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: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/bin/5.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 109 |             loop {}
[INFO] [stderr]     |             ------- any code following this expression is unreachable
[INFO] [stderr] 110 |             len = max(len, right - left + 1);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `math_unique_paths`
[INFO] [stderr]   --> src/bin/62.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn math_unique_paths(m: i32, n: 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: `factorial`
[INFO] [stderr]   --> src/bin/62.rs:40:8
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn factorial(n: i32) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `width`
[INFO] [stderr]  --> src/bin/1380.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |         let width = matrix[0].len();
[INFO] [stderr]   |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_width`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]    --> src/bin/5.rs:105:13
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let mut len = 0;
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `left`
[INFO] [stderr]    --> src/bin/5.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |             let mut left = i;
[INFO] [stderr]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `right`
[INFO] [stderr]    --> src/bin/5.rs:108:17
[INFO] [stderr]     |
[INFO] [stderr] 108 |             let mut right = i;
[INFO] [stderr]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `len` is never read
[INFO] [stderr]    --> src/bin/5.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 110 |             len = max(len, right - left + 1);
[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/5.rs:105:13
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let mut len = 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/5.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |             let mut left = i;
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/5.rs:108:17
[INFO] [stderr]     |
[INFO] [stderr] 108 |             let mut right = i;
[INFO] [stderr]     |                 ----^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `tmp_longest_palindrome`
[INFO] [stderr]   --> src/bin/5.rs:87:12
[INFO] [stderr]    |
[INFO] [stderr] 87 |     pub fn tmp_longest_palindrome(s: String) -> String {
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[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: 3 warnings emitted
[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: 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: 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: 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: 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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning 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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/392.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_subsequence`
[INFO] [stderr]  --> src/bin/392.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn is_subsequence(s: String, t: String) -> bool {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_subsequence2`
[INFO] [stderr]   --> src/bin/392.rs:47:12
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn is_subsequence2(s: String, t: String) -> bool {
[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: 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: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `naive_add_binary`
[INFO] [stderr]   --> src/bin/67.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn naive_add_binary(a: String, b: String) -> String {
[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/31.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: `next_permutation`
[INFO] [stderr]  --> src/bin/31.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn next_permutation(nums: &mut Vec<i32>) {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]   --> src/bin/201.rs:35:9
[INFO] [stderr]    |
[INFO] [stderr] 35 |     use super::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/341.rs:81:13
[INFO] [stderr]    |
[INFO] [stderr] 81 |         let mut it = NestedIterator::new(wrap(nested_integer!([])));
[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 `nestedList` should have a snake case name
[INFO] [stderr]   --> src/bin/341.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn new(nestedList: Vec<NestedInteger>) -> Self {
[INFO] [stderr]    |            ^^^^^^^^^^ help: convert the identifier to snake case: `nested_list`
[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/201.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: `range_bitwise_and`
[INFO] [stderr]  --> src/bin/201.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn range_bitwise_and(m: i32, n: i32) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `naive_range_bitwise_and`
[INFO] [stderr]   --> src/bin/201.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn naive_range_bitwise_and(m: i32, n: i32) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/bin/445.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn new(val: i32) -> Self {
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/bin/6.rs:20:50
[INFO] [stderr]    |
[INFO] [stderr] 20 |                     if let Some(&cn) = chars.get((cur_r + (room_in_block as usize) - 2 * r)) {
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n_blocks`
[INFO] [stderr]   --> src/bin/6.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 |         let n_blocks = chars.len() as i32 / room_in_block;
[INFO] [stderr]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_n_blocks`
[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/6.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: `convert`
[INFO] [stderr]  --> src/bin/6.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn convert(s: String, num_rows: i32) -> String {
[INFO] [stderr]   |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `RandomizedSet`
[INFO] [stderr]  --> src/bin/380.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct RandomizedSet {
[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/380.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert`
[INFO] [stderr]   --> src/bin/380.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn insert(&mut self, val: i32) -> bool {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `remove`
[INFO] [stderr]   --> src/bin/380.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn remove(&mut self, val: i32) -> bool {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_random`
[INFO] [stderr]   --> src/bin/380.rs:46:8
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn get_random(&mut self) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `next_max`
[INFO] [stderr]   --> src/bin/53.rs:33:17
[INFO] [stderr]    |
[INFO] [stderr] 33 |             let next_max = max(cur.0, sum);
[INFO] [stderr]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_max`
[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/53.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_sub_array`
[INFO] [stderr]  --> src/bin/53.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn max_sub_array(nums: Vec<i32>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `my_max_sub_array`
[INFO] [stderr]   --> src/bin/53.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn my_max_sub_array(nums: Vec<i32>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1395.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_teams`
[INFO] [stderr]  --> src/bin/1395.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn num_teams(rating: Vec<i32>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `delete_and_earn2`
[INFO] [stderr]   --> src/bin/740.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn delete_and_earn2(nums: Vec<i32>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[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: associated function is never used: `subarray_sum2`
[INFO] [stderr]   --> src/bin/560.rs:22:12
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn subarray_sum2(nums: Vec<i32>, k: i32) -> i32 {
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/50.rs:12:13
[INFO] [stderr]    |
[INFO] [stderr] 12 |         let mut even_n = if is_odd { n - 1 } else { n };
[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: unused variable: `next_max`
[INFO] [stderr]   --> src/bin/53.rs:33:17
[INFO] [stderr]    |
[INFO] [stderr] 33 |             let next_max = max(cur.0, sum);
[INFO] [stderr]    |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_max`
[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/50.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: `my_pow`
[INFO] [stderr]  --> src/bin/50.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn my_pow(x: f64, n: i32) -> f64 {
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `recursive_my_pow`
[INFO] [stderr]   --> src/bin/50.rs:33:12
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn recursive_my_pow(x: f64, n: i32) -> f64 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `my_power`
[INFO] [stderr]   --> src/bin/50.rs:52:8
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn my_power(x: f64, n: i32) -> f64 {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/bin/5.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 109 |             loop {}
[INFO] [stderr]     |             ------- any code following this expression is unreachable
[INFO] [stderr] 110 |             len = max(len, right - left + 1);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]    --> src/bin/5.rs:105:13
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let mut len = 0;
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `left`
[INFO] [stderr]    --> src/bin/5.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |             let mut left = i;
[INFO] [stderr]     |                 ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_left`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `right`
[INFO] [stderr]    --> src/bin/5.rs:108:17
[INFO] [stderr]     |
[INFO] [stderr] 108 |             let mut right = i;
[INFO] [stderr]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_right`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `len` is never read
[INFO] [stderr]    --> src/bin/5.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 110 |             len = max(len, right - left + 1);
[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/5.rs:105:13
[INFO] [stderr]     |
[INFO] [stderr] 105 |         let mut len = 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/5.rs:107:17
[INFO] [stderr]     |
[INFO] [stderr] 107 |             let mut left = i;
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/5.rs:108:17
[INFO] [stderr]     |
[INFO] [stderr] 108 |             let mut right = i;
[INFO] [stderr]     |                 ----^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `longest_palindrome`
[INFO] [stderr]  --> src/bin/5.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn longest_palindrome(s: String) -> String {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `tmp_longest_palindrome`
[INFO] [stderr]   --> src/bin/5.rs:87:12
[INFO] [stderr]    |
[INFO] [stderr] 87 |     pub fn tmp_longest_palindrome(s: String) -> String {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/49.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: `group_anagrams`
[INFO] [stderr]  --> src/bin/49.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn group_anagrams(strs: Vec<String>) -> Vec<Vec<String>> {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]   --> src/bin/102.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 | 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: `level_order`
[INFO] [stderr]   --> src/bin/102.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn level_order(root: Option<Rc<RefCell<TreeNode>>>) -> Vec<Vec<i32>> {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_node`
[INFO] [stderr]   --> src/bin/102.rs:67:4
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn make_node(val: i32) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_node_with`
[INFO] [stderr]   --> src/bin/102.rs:71:4
[INFO] [stderr]    |
[INFO] [stderr] 71 | fn make_node_with(
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]   --> src/bin/207.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let result = Solution::can_finish(2, vec![vec![0, 1]]);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[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: 4 warnings emitted
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/347.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: `top_k_frequent`
[INFO] [stderr]  --> src/bin/347.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn top_k_frequent(nums: Vec<i32>, k: i32) -> Vec<i32> {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[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: 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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `width`
[INFO] [stderr]  --> src/bin/1380.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |         let width = matrix[0].len();
[INFO] [stderr]   |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_width`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[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/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: 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/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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `NestedIterator`
[INFO] [stderr]  --> src/bin/341.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct NestedIterator {
[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/341.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn new(nestedList: Vec<NestedInteger>) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `push_all`
[INFO] [stderr]   --> src/bin/341.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn push_all(&mut self, values: Vec<NestedInteger>) {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `next`
[INFO] [stderr]   --> src/bin/341.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn next(&mut self) -> i32 {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `has_next`
[INFO] [stderr]   --> src/bin/341.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn has_next(&self) -> bool {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `nestedList` should have a snake case name
[INFO] [stderr]   --> src/bin/341.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn new(nestedList: Vec<NestedInteger>) -> Self {
[INFO] [stderr]    |            ^^^^^^^^^^ help: convert the identifier to snake case: `nested_list`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `min`
[INFO] [stderr]   --> src/bin/300.rs:35:29
[INFO] [stderr]    |
[INFO] [stderr] 35 |         use std::cmp::{max, min};
[INFO] [stderr]    |                             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[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: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[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/300.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_lis`
[INFO] [stderr]  --> src/bin/300.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn length_of_lis(nums: Vec<i32>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `slow_length_of_lis`
[INFO] [stderr]   --> src/bin/300.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn slow_length_of_lis(nums: 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: 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: 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: 4 warnings emitted
[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: 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: 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: 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: associated function is never used: `factorial`
[INFO] [stderr]   --> src/bin/62.rs:40:8
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn factorial(n: i32) -> i32 {
[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: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/617.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let mut n1 = n1.unwrap();
[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/617.rs:26:14
[INFO] [stderr]    |
[INFO] [stderr] 26 |         Some(mut n2) => {
[INFO] [stderr]    |              ----^^
[INFO] [stderr]    |              |
[INFO] [stderr]    |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/617.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | 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: `merge_trees`
[INFO] [stderr]  --> src/bin/617.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn merge_trees(t1: Node, t2: Node) -> Node {
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dfs`
[INFO] [stderr]   --> src/bin/617.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn dfs(mut n1: Node, mut n2: Node) -> Node {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `subsets`
[INFO] [stderr]  --> src/bin/78.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn subsets(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stderr]   |            ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/bin/445.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 |     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/445.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | struct Solution;
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add_two_numbers`
[INFO] [stderr]   --> src/bin/445.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn add_two_numbers(
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_linked_list`
[INFO] [stderr]   --> src/bin/445.rs:48:4
[INFO] [stderr]    |
[INFO] [stderr] 48 | fn make_linked_list(index: usize, digits: &[i32]) -> Option<Box<ListNode>> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `traverse`
[INFO] [stderr]   --> src/bin/445.rs:59:4
[INFO] [stderr]    |
[INFO] [stderr] 59 | fn traverse(node: Option<&Box<ListNode>>, val: &mut Vec<i32>) {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `HitCounter`
[INFO] [stderr]  --> src/bin/362.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct HitCounter {
[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/362.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 |     fn new() -> Self {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `hit`
[INFO] [stderr]   --> src/bin/362.rs:10:8
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fn hit(&mut self, timestamp: i32) {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_hits`
[INFO] [stderr]   --> src/bin/362.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn get_hits(&self, timestamp: i32) -> i32 {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1405.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_diverse_string`
[INFO] [stderr]  --> src/bin/1405.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn longest_diverse_string(a: i32, b: i32, c: i32) -> String {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `tle_longest_diverse_string`
[INFO] [stderr]   --> src/bin/1405.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn tle_longest_diverse_string(a: i32, b: i32, c: i32) -> String {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `helper`
[INFO] [stderr]   --> src/bin/1405.rs:96:4
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn helper(one: char, two: char, ret: &mut Vec<char>, a: i32, b: i32, c: i32) {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dfs`
[INFO] [stderr]    --> src/bin/1405.rs:103:4
[INFO] [stderr]     |
[INFO] [stderr] 103 | fn dfs(
[INFO] [stderr]     |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_node`
[INFO] [stderr]   --> src/bin/98.rs:47:4
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn make_node(val: i32) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_node_with`
[INFO] [stderr]   --> src/bin/98.rs:51:4
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn make_node_with(
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 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: `Solution`
[INFO] [stderr]  --> src/bin/63.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: `unique_paths_with_obstacles`
[INFO] [stderr]  --> src/bin/63.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn unique_paths_with_obstacles(obstacle_grid: Vec<Vec<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/15.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: `three_sum`
[INFO] [stderr]  --> src/bin/15.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn three_sum(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `tle_three_sum`
[INFO] [stderr]   --> src/bin/15.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn tle_three_sum(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]   --> src/bin/23.rs:70:9
[INFO] [stderr]    |
[INFO] [stderr] 70 |     use super::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]   --> src/bin/207.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let result = Solution::can_finish(2, vec![vec![0, 1]]);
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[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: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/735.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: `asteroid_collision`
[INFO] [stderr]  --> src/bin/735.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn asteroid_collision(asteroids: Vec<i32>) -> Vec<i32> {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/bin/206.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn new(val: i32) -> Self {
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::RefCell`
[INFO] [stderr]  --> src/bin/776.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::cell::RefCell;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]  --> src/bin/776.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1397.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_good_strings`
[INFO] [stderr]  --> src/bin/1397.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub fn find_good_strings(n: i32, s1: String, s2: String, evil: String) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `MOD` should have a snake case name
[INFO] [stderr]  --> src/bin/1397.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |         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: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/776.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |         let mut root = root.unwrap();
[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/776.rs:6:8
[INFO] [stderr]   |
[INFO] [stderr] 6 | 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: `split_bst`
[INFO] [stderr]  --> src/bin/776.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn split_bst(root: Node, v: i32) -> Vec<Node> {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 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: unused import: `super::*`
[INFO] [stderr]   --> src/bin/22.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |     use super::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[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: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/1234.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: `balanced_string`
[INFO] [stderr]  --> src/bin/1234.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn balanced_string(s: String) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cur_right_ok`
[INFO] [stderr]   --> src/bin/1234.rs:48:4
[INFO] [stderr]    |
[INFO] [stderr] 48 | fn cur_right_ok(counts: &[i32], len: usize) -> bool {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `next_right_ng`
[INFO] [stderr]   --> src/bin/1234.rs:52:4
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn next_right_ng(counts: &[i32], next_char: char, len: usize) -> bool {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `char_to_index`
[INFO] [stderr]   --> src/bin/1234.rs:62:4
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn char_to_index(c: char) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/215.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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `find_kth_largest`
[INFO] [stderr]  --> src/bin/215.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn find_kth_largest(nums: Vec<i32>, k: 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/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: 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: 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: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a04f4a4120b677179937c82a2b4b1826566a778daf0f9a1c2897d14bc4d65970"`
[INFO] running `"docker" "rm" "-f" "a04f4a4120b677179937c82a2b4b1826566a778daf0f9a1c2897d14bc4d65970"`
[INFO] [stdout] a04f4a4120b677179937c82a2b4b1826566a778daf0f9a1c2897d14bc4d65970