[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#e2aab98dd8975a0990f9fbb79b3ea4b40559a184 for pr-72493
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmagurotuna%2Fleetcode-rust" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/magurotuna/leetcode-rust on toolchain e2aab98dd8975a0990f9fbb79b3ea4b40559a184
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e2aab98dd8975a0990f9fbb79b3ea4b40559a184" "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-0/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" "+e2aab98dd8975a0990f9fbb79b3ea4b40559a184" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+e2aab98dd8975a0990f9fbb79b3ea4b40559a184" "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] 2aa55635616e1f5665e6b302ec9d47161166b3544e95f52b998e8f2c9102ad16
[INFO] running `"docker" "start" "-a" "2aa55635616e1f5665e6b302ec9d47161166b3544e95f52b998e8f2c9102ad16"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.68
[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/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: 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: 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: struct is never constructed: `KthLargest`
[INFO] [stderr]  --> src/bin/703.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct KthLargest {
[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/703.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn new(k: i32, nums: Vec<i32>) -> Self {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add`
[INFO] [stderr]   --> src/bin/703.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn add(&mut self, val: i32) -> i32 {
[INFO] [stderr]    |        ^^^
[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: 2 warnings emitted
[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: 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: 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/200.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_islands`
[INFO] [stderr]  --> src/bin/200.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn num_islands(grid: Vec<Vec<char>>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `mark_island`
[INFO] [stderr]   --> src/bin/200.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn mark_island(marker: &mut Vec<Vec<char>>, h: usize, w: usize) {
[INFO] [stderr]    |        ^^^^^^^^^^^
[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: 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: 3 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: 4 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: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/bin/12.rs:30:22
[INFO] [stderr]    |
[INFO] [stderr] 30 |                 x @ 1...3 => match 3 - i {
[INFO] [stderr]    |                      ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/bin/12.rs:37:22
[INFO] [stderr]    |
[INFO] [stderr] 37 |                 x @ 5...8 => match 3 - i {
[INFO] [stderr]    |                      ^^^ help: use `..=` for an inclusive range
[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: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/621.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: `least_interval`
[INFO] [stderr]  --> src/bin/621.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn least_interval(tasks: Vec<char>, n: i32) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `letter_to_index`
[INFO] [stderr]   --> src/bin/621.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn letter_to_index(c: char) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sort_counts`
[INFO] [stderr]   --> src/bin/621.rs:42:4
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn sort_counts(task_counts: &[i32]) -> Vec<(usize, 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/1209.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: `remove_duplicates`
[INFO] [stderr]  --> src/bin/1209.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn remove_duplicates(s: String, k: i32) -> String {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[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: struct is never constructed: `Solution`
[INFO] [stderr]   --> src/bin/103.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: `zigzag_level_order`
[INFO] [stderr]   --> src/bin/103.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn zigzag_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/103.rs:78:4
[INFO] [stderr]    |
[INFO] [stderr] 78 | 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/103.rs:82:4
[INFO] [stderr]    |
[INFO] [stderr] 82 | fn make_node_with(
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[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: 2 warnings emitted
[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/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: 2 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: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/334.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: `increasing_triplet`
[INFO] [stderr]  --> src/bin/334.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn increasing_triplet(nums: Vec<i32>) -> bool {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/67.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: `add_binary`
[INFO] [stderr]  --> src/bin/67.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn add_binary(a: String, b: String) -> String {
[INFO] [stderr]   |            ^^^^^^^^^^
[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] 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: 3 warnings emitted
[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/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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[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/547.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_circle_num`
[INFO] [stderr]  --> src/bin/547.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn find_circle_num(m: Vec<Vec<i32>>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[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/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: 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/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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[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] 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] warning: 8 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] 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 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: 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: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/125.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_palindrome`
[INFO] [stderr]  --> src/bin/125.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn is_palindrome(s: String) -> bool {
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/bin/529.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_difference`
[INFO] [stderr]  --> src/bin/529.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn find_min_difference(time_points: Vec<String>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^
[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/1048.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_str_chain`
[INFO] [stderr]  --> src/bin/1048.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     pub fn longest_str_chain(words: Vec<String>) -> i32 {
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `dp_longest_str_chain`
[INFO] [stderr]   --> src/bin/1048.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn dp_longest_str_chain(words: Vec<String>) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dfs`
[INFO] [stderr]   --> src/bin/1048.rs:62:4
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn dfs(
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_chain`
[INFO] [stderr]   --> src/bin/1048.rs:85:4
[INFO] [stderr]    |
[INFO] [stderr] 85 | fn is_chain(prev: &[char], next: &[char]) -> bool {
[INFO] [stderr]    |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::min`
[INFO] [stderr]  --> src/bin/76.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::cmp::min;
[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: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/bin/76.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let mut t_count = t.chars().fold(HashMap::new(), |mut acc, ch| {
[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: 2 warnings emitted
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "2aa55635616e1f5665e6b302ec9d47161166b3544e95f52b998e8f2c9102ad16"`
[INFO] running `"docker" "rm" "-f" "2aa55635616e1f5665e6b302ec9d47161166b3544e95f52b998e8f2c9102ad16"`
[INFO] [stdout] 2aa55635616e1f5665e6b302ec9d47161166b3544e95f52b998e8f2c9102ad16