[INFO] cloning repository https://github.com/galigalikun/leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/galigalikun/leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgaligalikun%2Fleetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgaligalikun%2Fleetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49c7e6cc45c632006c72a8d20046fbf81fc25ffe
[INFO] testing galigalikun/leetcode against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgaligalikun%2Fleetcode" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/galigalikun/leetcode on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/galigalikun/leetcode
[INFO] finished tweaking git repo https://github.com/galigalikun/leetcode
[INFO] tweaked toml for git repo https://github.com/galigalikun/leetcode written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/galigalikun/leetcode already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e32e85d1b78c3748ede934d7aef4c09890cf7f438fc8a94da9183f9b9326cbc
[INFO] running `Command { std: "docker" "start" "-a" "2e32e85d1b78c3748ede934d7aef4c09890cf7f438fc8a94da9183f9b9326cbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e32e85d1b78c3748ede934d7aef4c09890cf7f438fc8a94da9183f9b9326cbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e32e85d1b78c3748ede934d7aef4c09890cf7f438fc8a94da9183f9b9326cbc", kill_on_drop: false }`
[INFO] [stdout] 2e32e85d1b78c3748ede934d7aef4c09890cf7f438fc8a94da9183f9b9326cbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 530cd9bd167b93f6db0034c672f2a493e36c7aa892dd1ab9dfcad2db690af6c1
[INFO] running `Command { std: "docker" "start" "-a" "530cd9bd167b93f6db0034c672f2a493e36c7aa892dd1ab9dfcad2db690af6c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/sort-list.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `guessNumber` should have a snake case name
[INFO] [stdout]   --> src/guess-number-higher-or-lower.rs:29:15
[INFO] [stdout]    |
[INFO] [stdout] 29 |     unsafe fn guessNumber(n: i32) -> i32 {
[INFO] [stdout]    |               ^^^^^^^^^^^ help: convert the identifier to snake case: `guess_number`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/remove-nth-node-from-end-of-list.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/convert-sorted-list-to-binary-search-tree.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/reorder-list.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/merge-two-sorted-lists.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/serialize-and-deserialize-binary-tree.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn deserialize(&self, data: String) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `top_val` is never read
[INFO] [stdout]   --> src/maximal-rectangle.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let mut top_val = 0;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `area` is never read
[INFO] [stdout]   --> src/maximal-rectangle.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let mut area = 0;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/maximal-rectangle.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn max_hit(r: usize, c: usize, row: &Vec<i32>) -> i32 {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/insertion-sort-list.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/palindrome-linked-list.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/search-a-2d-matrix-ii.rs:63:24
[INFO] [stdout]    |
[INFO] [stdout] 63 |         while i < y && j >= 0 {
[INFO] [stdout]    |                        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/rotate-list.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/odd-even-linked-list.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/remove-duplicates-from-sorted-list-ii.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/reverse-linked-list-ii.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]     --> src/sliding-window-maximum.rs:5086:29
[INFO] [stdout]      |
[INFO] [stdout] 5086 |             if let Some((t, b, p)) = prev {
[INFO] [stdout]      |                             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/binary-search-tree-iterator.rs:45:10
[INFO] [stdout]    |
[INFO] [stdout] 45 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/remove-linked-list-elements.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/reverse-nodes-in-k-group.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/reverse-linked-list.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::Ref`
[INFO] [stdout]   --> src/recover-binary-search-tree.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | use std::cell::Ref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prev`
[INFO] [stdout]    --> src/recover-binary-search-tree.rs:124:25
[INFO] [stdout]     |
[INFO] [stdout] 124 |                     let prev = Some(r.borrow());
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_prev`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dfs`
[INFO] [stdout]    --> src/recover-binary-search-tree.rs:122:18
[INFO] [stdout]     |
[INFO] [stdout] 122 |             f: &|dfs, root| {
[INFO] [stdout]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_dfs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prev`
[INFO] [stdout]    --> src/recover-binary-search-tree.rs:116:17
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let mut prev: Option<TreeNode> = None;
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_prev`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/recover-binary-search-tree.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let mut prev: Option<TreeNode> = None;
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Helper`
[INFO] [stdout]   --> src/recover-binary-search-tree.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | struct Helper {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/recover-binary-search-tree.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `help`
[INFO] [stdout]   --> src/recover-binary-search-tree.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn help(&mut self, root: &mut Option<Rc<RefCell<TreeNode>>>) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/add-two-numbers.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/merge-k-sorted-lists.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/remove-duplicates-from-sorted-list.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `checker`
[INFO] [stdout]   --> src/sudoku-solver.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn checker(
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `revival`
[INFO] [stdout]   --> src/sudoku-solver.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn revival(
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `m` is never read
[INFO] [stdout]   --> src/longest-palindromic-substring.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut m: i32 = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]  --> src/random-pick-index.rs:1:46
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{prelude::SliceRandom, thread_rng, Rng};
[INFO] [stdout]   |                                              ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ret_1`
[INFO] [stdout]   --> src/random-pick-index.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let ret_1: i32 = obj.pick(3); // It should return either index 2, 3, or 4 randomly. Each index should have equal probability of retur...
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_ret_1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/swap-nodes-in-pairs.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `hammingWeight` should have a snake case name
[INFO] [stdout]   --> src/number-of-1-bits.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn hammingWeight(n: u32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^ help: convert the identifier to snake case: `hamming_weight`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/partition-list.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.34s
[INFO] running `Command { std: "docker" "inspect" "530cd9bd167b93f6db0034c672f2a493e36c7aa892dd1ab9dfcad2db690af6c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "530cd9bd167b93f6db0034c672f2a493e36c7aa892dd1ab9dfcad2db690af6c1", kill_on_drop: false }`
[INFO] [stdout] 530cd9bd167b93f6db0034c672f2a493e36c7aa892dd1ab9dfcad2db690af6c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17080864dea61bdbf23f4002c1266e803dbc7baded865dc88fb33db02383275f
[INFO] running `Command { std: "docker" "start" "-a" "17080864dea61bdbf23f4002c1266e803dbc7baded865dc88fb33db02383275f", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/remove-duplicates-from-sorted-list.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/odd-even-linked-list.rs:83:8
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/add-two-numbers.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `checker`
[INFO] [stdout]   --> src/sudoku-solver.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn checker(
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `revival`
[INFO] [stdout]   --> src/sudoku-solver.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn revival(
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]   --> src/search-a-2d-matrix-ii.rs:63:24
[INFO] [stdout]    |
[INFO] [stdout] 63 |         while i < y && j >= 0 {
[INFO] [stdout]    |                        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/serialize-and-deserialize-binary-tree.rs:39:27
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn deserialize(&self, data: String) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/merge-two-sorted-lists.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]  --> src/random-pick-index.rs:1:46
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{prelude::SliceRandom, thread_rng, Rng};
[INFO] [stdout]   |                                              ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ret_1`
[INFO] [stdout]   --> src/random-pick-index.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let ret_1: i32 = obj.pick(3); // It should return either index 2, 3, or 4 randomly. Each index should have equal probability of retur...
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_ret_1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/reverse-linked-list-ii.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/sort-list.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/palindrome-linked-list.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `top_val` is never read
[INFO] [stdout]   --> src/maximal-rectangle.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let mut top_val = 0;
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `area` is never read
[INFO] [stdout]   --> src/maximal-rectangle.rs:24:17
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let mut area = 0;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/maximal-rectangle.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn max_hit(r: usize, c: usize, row: &Vec<i32>) -> i32 {
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/merge-k-sorted-lists.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::Ref`
[INFO] [stdout]   --> src/recover-binary-search-tree.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | use std::cell::Ref;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prev`
[INFO] [stdout]    --> src/recover-binary-search-tree.rs:124:25
[INFO] [stdout]     |
[INFO] [stdout] 124 |                     let prev = Some(r.borrow());
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_prev`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dfs`
[INFO] [stdout]    --> src/recover-binary-search-tree.rs:122:18
[INFO] [stdout]     |
[INFO] [stdout] 122 |             f: &|dfs, root| {
[INFO] [stdout]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_dfs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prev`
[INFO] [stdout]    --> src/recover-binary-search-tree.rs:116:17
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let mut prev: Option<TreeNode> = None;
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_prev`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/recover-binary-search-tree.rs:116:13
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let mut prev: Option<TreeNode> = None;
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Helper`
[INFO] [stdout]   --> src/recover-binary-search-tree.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 | struct Helper {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/recover-binary-search-tree.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `help`
[INFO] [stdout]   --> src/recover-binary-search-tree.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn help(&mut self, root: &mut Option<Rc<RefCell<TreeNode>>>) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/reorder-list.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/insertion-sort-list.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/reverse-linked-list.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/remove-duplicates-from-sorted-list-ii.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/rotate-list.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/remove-linked-list-elements.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/binary-search-tree-iterator.rs:45:10
[INFO] [stdout]    |
[INFO] [stdout] 45 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/partition-list.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `guessNumber` should have a snake case name
[INFO] [stdout]   --> src/guess-number-higher-or-lower.rs:29:15
[INFO] [stdout]    |
[INFO] [stdout] 29 |     unsafe fn guessNumber(n: i32) -> i32 {
[INFO] [stdout]    |               ^^^^^^^^^^^ help: convert the identifier to snake case: `guess_number`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `m` is never read
[INFO] [stdout]   --> src/longest-palindromic-substring.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let mut m: i32 = 0;
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/remove-nth-node-from-end-of-list.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `hammingWeight` should have a snake case name
[INFO] [stdout]   --> src/number-of-1-bits.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn hammingWeight(n: u32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^ help: convert the identifier to snake case: `hamming_weight`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/swap-nodes-in-pairs.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/convert-sorted-list-to-binary-search-tree.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]     --> src/sliding-window-maximum.rs:5086:29
[INFO] [stdout]      |
[INFO] [stdout] 5086 |             if let Some((t, b, p)) = prev {
[INFO] [stdout]      |                             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/reverse-nodes-in-k-group.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 46.68s
[INFO] running `Command { std: "docker" "inspect" "17080864dea61bdbf23f4002c1266e803dbc7baded865dc88fb33db02383275f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17080864dea61bdbf23f4002c1266e803dbc7baded865dc88fb33db02383275f", kill_on_drop: false }`
[INFO] [stdout] 17080864dea61bdbf23f4002c1266e803dbc7baded865dc88fb33db02383275f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b18384d21612e2bf349815be49800706cd0c2a808d8c97c95c9c9b7cf80dd770
[INFO] running `Command { std: "docker" "start" "-a" "b18384d21612e2bf349815be49800706cd0c2a808d8c97c95c9c9b7cf80dd770", kill_on_drop: false }`
[INFO] [stderr] warning: method `guessNumber` should have a snake case name
[INFO] [stderr]   --> src/guess-number-higher-or-lower.rs:29:15
[INFO] [stderr]    |
[INFO] [stderr] 29 |     unsafe fn guessNumber(n: i32) -> i32 {
[INFO] [stderr]    |               ^^^^^^^^^^^ help: convert the identifier to snake case: `guess_number`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cell::Ref`
[INFO] [stderr]   --> src/recover-binary-search-tree.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 | use std::cell::Ref;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prev`
[INFO] [stderr]    --> src/recover-binary-search-tree.rs:124:25
[INFO] [stderr]     |
[INFO] [stderr] 124 |                     let prev = Some(r.borrow());
[INFO] [stderr]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_prev`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dfs`
[INFO] [stderr]    --> src/recover-binary-search-tree.rs:122:18
[INFO] [stderr]     |
[INFO] [stderr] 122 |             f: &|dfs, root| {
[INFO] [stderr]     |                  ^^^ help: if this is intentional, prefix it with an underscore: `_dfs`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prev`
[INFO] [stderr]    --> src/recover-binary-search-tree.rs:116:17
[INFO] [stderr]     |
[INFO] [stderr] 116 |         let mut prev: Option<TreeNode> = None;
[INFO] [stderr]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_prev`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/recover-binary-search-tree.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |         let mut prev: Option<TreeNode> = None;
[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: `Helper`
[INFO] [stderr]   --> src/recover-binary-search-tree.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 56 | struct Helper {
[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/recover-binary-search-tree.rs:62:12
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn new() -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `help`
[INFO] [stderr]   --> src/recover-binary-search-tree.rs:70:12
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn help(&mut self, root: &mut Option<Rc<RefCell<TreeNode>>>) {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]   --> src/serialize-and-deserialize-binary-tree.rs:39:27
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn deserialize(&self, data: String) -> Option<Rc<RefCell<TreeNode>>> {
[INFO] [stderr]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode` (bin "guess-number-higher-or-lower" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "recover-binary-search-tree" test) generated 8 warnings
[INFO] [stderr] warning: `leetcode` (bin "serialize-and-deserialize-binary-tree" test) generated 1 warning
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/reverse-linked-list.rs:55:8
[INFO] [stderr]    |
[INFO] [stderr] 55 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/add-two-numbers.rs:40:8
[INFO] [stderr]    |
[INFO] [stderr] 40 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode` (bin "reverse-linked-list" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "add-two-numbers" test) generated 1 warning
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/sort-list.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]     --> src/sliding-window-maximum.rs:5086:29
[INFO] [stderr]      |
[INFO] [stderr] 5086 |             if let Some((t, b, p)) = prev {
[INFO] [stderr]      |                             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/merge-k-sorted-lists.rs:58:8
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/remove-linked-list-elements.rs:51:8
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode` (bin "sort-list" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "sliding-window-maximum" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "merge-k-sorted-lists" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "remove-linked-list-elements" test) generated 1 warning
[INFO] [stderr] warning: value assigned to `top_val` is never read
[INFO] [stderr]   --> src/maximal-rectangle.rs:22:17
[INFO] [stderr]    |
[INFO] [stderr] 22 |         let mut top_val = 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 `area` is never read
[INFO] [stderr]   --> src/maximal-rectangle.rs:24:17
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let mut area = 0;
[INFO] [stderr]    |                 ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]   --> src/maximal-rectangle.rs:20:16
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn max_hit(r: usize, c: usize, row: &Vec<i32>) -> i32 {
[INFO] [stderr]    |                ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/palindrome-linked-list.rs:34:8
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `m` is never read
[INFO] [stderr]   --> src/longest-palindromic-substring.rs:55:17
[INFO] [stderr]    |
[INFO] [stderr] 55 |         let mut m: i32 = 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: `leetcode` (bin "maximal-rectangle" test) generated 3 warnings
[INFO] [stderr] warning: `leetcode` (bin "palindrome-linked-list" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "longest-palindromic-substring" test) generated 1 warning
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/remove-nth-node-from-end-of-list.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/remove-duplicates-from-sorted-list-ii.rs:62:8
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/insertion-sort-list.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/reverse-linked-list-ii.rs:50:8
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/binary-search-tree-iterator.rs:45:10
[INFO] [stderr]    |
[INFO] [stderr] 45 |         };
[INFO] [stderr]    |          ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode` (bin "remove-nth-node-from-end-of-list" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "remove-duplicates-from-sorted-list-ii" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "insertion-sort-list" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "reverse-linked-list-ii" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "binary-search-tree-iterator" test) generated 1 warning
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/reverse-nodes-in-k-group.rs:90:8
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/merge-two-sorted-lists.rs:84:8
[INFO] [stderr]    |
[INFO] [stderr] 84 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `checker`
[INFO] [stderr]   --> src/sudoku-solver.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn checker(
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `revival`
[INFO] [stderr]   --> src/sudoku-solver.rs:60:8
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn revival(
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/reorder-list.rs:70:8
[INFO] [stderr]    |
[INFO] [stderr] 70 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode` (bin "reverse-nodes-in-k-group" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "merge-two-sorted-lists" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "sudoku-solver" test) generated 2 warnings
[INFO] [stderr] warning: `leetcode` (bin "reorder-list" test) generated 1 warning
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/partition-list.rs:51:8
[INFO] [stderr]    |
[INFO] [stderr] 51 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/swap-nodes-in-pairs.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]  --> src/random-pick-index.rs:1:46
[INFO] [stderr]   |
[INFO] [stderr] 1 | use rand::{prelude::SliceRandom, thread_rng, Rng};
[INFO] [stderr]   |                                              ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ret_1`
[INFO] [stderr]   --> src/random-pick-index.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let ret_1: i32 = obj.pick(3); // It should return either index 2, 3, or 4 randomly. Each index should have equal probability of retur...
[INFO] [stderr]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_ret_1`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/odd-even-linked-list.rs:83:8
[INFO] [stderr]    |
[INFO] [stderr] 83 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/rotate-list.rs:65:8
[INFO] [stderr]    |
[INFO] [stderr] 65 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode` (bin "partition-list" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "swap-nodes-in-pairs" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "random-pick-index" test) generated 2 warnings
[INFO] [stderr] warning: `leetcode` (bin "odd-even-linked-list" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "rotate-list" test) generated 1 warning
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/convert-sorted-list-to-binary-search-tree.rs:77:8
[INFO] [stderr]    |
[INFO] [stderr] 77 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/remove-duplicates-from-sorted-list.rs:52:8
[INFO] [stderr]    |
[INFO] [stderr] 52 |     fn new(val: i32) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/search-a-2d-matrix-ii.rs:63:24
[INFO] [stderr]    |
[INFO] [stderr] 63 |         while i < y && j >= 0 {
[INFO] [stderr]    |                        ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode` (bin "convert-sorted-list-to-binary-search-tree" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "remove-duplicates-from-sorted-list" test) generated 1 warning
[INFO] [stderr] warning: `leetcode` (bin "search-a-2d-matrix-ii" test) generated 1 warning
[INFO] [stderr] warning: method `hammingWeight` should have a snake case name
[INFO] [stderr]   --> src/number-of-1-bits.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn hammingWeight(n: u32) -> i32 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^ help: convert the identifier to snake case: `hamming_weight`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode` (bin "number-of-1-bits" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.35s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/3sum-17178fea35eab3e0)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/3sum_closest-1fc1ce8ce388fbb2)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/4sum-c7fe0142e6246d1c)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/add_binary-6948b119b50ae037)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/add_digits-f30df6f34ce91e34)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/add_strings-7f7d6c023d5196c8)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/add_two_numbers-db645dd49eec3240)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/additive_number-060849aecf821f37)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/arithmetic_slices-b6e60ccc8aa23f20)
[INFO] [stdout] 
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[INFO] running `Command { std: "docker" "inspect" "b18384d21612e2bf349815be49800706cd0c2a808d8c97c95c9c9b7cf80dd770", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b18384d21612e2bf349815be49800706cd0c2a808d8c97c95c9c9b7cf80dd770", kill_on_drop: false }`
[INFO] [stdout] b18384d21612e2bf349815be49800706cd0c2a808d8c97c95c9c9b7cf80dd770