[INFO] cloning repository https://github.com/dayang/leetcode-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dayang/leetcode-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdayang%2Fleetcode-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdayang%2Fleetcode-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3871a38d4f6951664c216e4c43bcaec88938fc41
[INFO] checking dayang/leetcode-rs against master#818811b3cd1e0ff0d8ef20d5a4cf0b7c079929bc for pr-156114-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdayang%2Fleetcode-rs" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dayang/leetcode-rs
[INFO] finished tweaking git repo https://github.com/dayang/leetcode-rs
[INFO] tweaked toml for git repo https://github.com/dayang/leetcode-rs written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dayang/leetcode-rs on toolchain 818811b3cd1e0ff0d8ef20d5a4cf0b7c079929bc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+818811b3cd1e0ff0d8ef20d5a4cf0b7c079929bc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dayang/leetcode-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+818811b3cd1e0ff0d8ef20d5a4cf0b7c079929bc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.6
[INFO] [stderr]   Downloaded getrandom v0.1.14
[INFO] [stderr]   Downloaded libc v0.2.68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+818811b3cd1e0ff0d8ef20d5a4cf0b7c079929bc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ffbbe3374ae8350dbd6669a45465185c8032b7cd85eb99f033c93ce4cdfe52a
[INFO] running `Command { std: "docker" "start" "-a" "7ffbbe3374ae8350dbd6669a45465185c8032b7cd85eb99f033c93ce4cdfe52a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ffbbe3374ae8350dbd6669a45465185c8032b7cd85eb99f033c93ce4cdfe52a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ffbbe3374ae8350dbd6669a45465185c8032b7cd85eb99f033c93ce4cdfe52a", kill_on_drop: false }`
[INFO] [stdout] 7ffbbe3374ae8350dbd6669a45465185c8032b7cd85eb99f033c93ce4cdfe52a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+818811b3cd1e0ff0d8ef20d5a4cf0b7c079929bc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7b3972f095105c43634c498bc966106f1f4ebdad288be64762bdc6fc3e75fa9
[INFO] running `Command { std: "docker" "start" "-a" "c7b3972f095105c43634c498bc966106f1f4ebdad288be64762bdc6fc3e75fa9", kill_on_drop: false }`
[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 count-square-submatrices-with-all-ones v0.1.0 (/opt/rustwide/workdir/count-square-submatrices-with-all-ones)
[INFO] [stderr]     Checking longest-increasing-subsequence v0.1.0 (/opt/rustwide/workdir/longest-increasing-subsequence)
[INFO] [stderr]     Checking triangle v0.1.0 (/opt/rustwide/workdir/triangle)
[INFO] [stderr]     Checking airplane-seat-assignment-probability v0.1.0 (/opt/rustwide/workdir/airplane-seat-assignment-probability)
[INFO] [stderr]     Checking count-negative-numbers-in-a-sorted-matrix v0.1.0 (/opt/rustwide/workdir/count-negative-numbers-in-a-sorted-matrix)
[INFO] [stderr]     Checking non-decreasing-array v0.1.0 (/opt/rustwide/workdir/non-decreasing-array)
[INFO] [stderr]     Checking next-greater-element-ii v0.1.0 (/opt/rustwide/workdir/next-greater-element-ii)
[INFO] [stderr]     Checking longest-valid-parentheses v0.1.0 (/opt/rustwide/workdir/longest-valid-parentheses)
[INFO] [stderr]     Checking min-cost-climbing-stairs v0.1.0 (/opt/rustwide/workdir/min-cost-climbing-stairs)
[INFO] [stderr]     Checking uncrossed-lines v0.1.0 (/opt/rustwide/workdir/uncrossed-lines)
[INFO] [stderr]     Checking replace-words v0.1.0 (/opt/rustwide/workdir/replace-words)
[INFO] [stderr]     Checking delete-operation-for-two-strings v0.1.0 (/opt/rustwide/workdir/delete-operation-for-two-strings)
[INFO] [stderr]     Checking best-time-to-buy-and-sell-stock-ii v0.1.0 (/opt/rustwide/workdir/best-time-to-buy-and-sell-stock-ii)
[INFO] [stderr]     Checking ji-qi-ren-de-yun-dong-fan-wei-lcof v0.1.0 (/opt/rustwide/workdir/ji-qi-ren-de-yun-dong-fan-wei-lcof)
[INFO] [stderr]     Checking lian-biao-zhong-dao-shu-di-kge-jie-dian-lcof v0.1.0 (/opt/rustwide/workdir/lian-biao-zhong-dao-shu-di-kge-jie-dian-lcof)
[INFO] [stdout] warning: variable `L` should have a snake case name
[INFO] [stdout]   --> count-negative-numbers-in-a-sorted-matrix/src/main.rs:54:38
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn solve(l: usize, r: usize, L: usize, R: usize, grid: &Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]    |                                      ^ help: convert the identifier to snake case: `l`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `R` should have a snake case name
[INFO] [stdout]   --> count-negative-numbers-in-a-sorted-matrix/src/main.rs:54:48
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn solve(l: usize, r: usize, L: usize, R: usize, grid: &Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]    |                                                ^ help: convert the identifier to snake case: `r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking stone-game v0.1.0 (/opt/rustwide/workdir/stone-game)
[INFO] [stderr]     Checking valid-number v0.1.0 (/opt/rustwide/workdir/valid-number)
[INFO] [stderr]     Checking longest-common-subsequence v0.1.0 (/opt/rustwide/workdir/longest-common-subsequence)
[INFO] [stderr]     Checking online-stock-span v0.1.0 (/opt/rustwide/workdir/online-stock-span)
[INFO] [stderr]     Checking maximum-subarray v0.1.0 (/opt/rustwide/workdir/maximum-subarray)
[INFO] [stderr]     Checking minimum-ascii-delete-sum-for-two-strings v0.1.0 (/opt/rustwide/workdir/minimum-ascii-delete-sum-for-two-strings)
[INFO] [stderr]     Checking recover-binary-search-tree v0.1.0 (/opt/rustwide/workdir/recover-binary-search-tree)
[INFO] [stderr]     Checking reverse-integer v0.1.0 (/opt/rustwide/workdir/reverse-integer)
[INFO] [stdout] warning: variable `L` should have a snake case name
[INFO] [stdout]   --> count-negative-numbers-in-a-sorted-matrix/src/main.rs:54:38
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn solve(l: usize, r: usize, L: usize, R: usize, grid: &Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]    |                                      ^ help: convert the identifier to snake case: `l`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking binary-tree-inorder-traversal v0.1.0 (/opt/rustwide/workdir/binary-tree-inorder-traversal)
[INFO] [stdout] warning: variable `R` should have a snake case name
[INFO] [stdout]   --> count-negative-numbers-in-a-sorted-matrix/src/main.rs:54:48
[INFO] [stdout]    |
[INFO] [stdout] 54 |     pub fn solve(l: usize, r: usize, L: usize, R: usize, grid: &Vec<Vec<i32>>) -> i32 {
[INFO] [stdout]    |                                                ^ help: convert the identifier to snake case: `r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking best-time-to-buy-and-sell-stock v0.1.0 (/opt/rustwide/workdir/best-time-to-buy-and-sell-stock)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> lian-biao-zhong-dao-shu-di-kge-jie-dian-lcof/src/main.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 21 |   #[inline]
[INFO] [stdout] 22 |   fn new(val: i32) -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking best-time-to-buy-and-sell-stock-iii v0.1.0 (/opt/rustwide/workdir/best-time-to-buy-and-sell-stock-iii)
[INFO] [stderr]     Checking baseball-game v0.1.0 (/opt/rustwide/workdir/baseball-game)
[INFO] [stderr]     Checking next-greater-element-i v0.1.0 (/opt/rustwide/workdir/next-greater-element-i)
[INFO] [stderr]     Checking matrix-block-sum v0.1.0 (/opt/rustwide/workdir/matrix-block-sum)
[INFO] [stderr]     Checking is-subsequence v0.1.0 (/opt/rustwide/workdir/is-subsequence)
[INFO] [stderr]     Checking rotate-matrix-lcci v0.1.0 (/opt/rustwide/workdir/rotate-matrix-lcci)
[INFO] [stderr]     Checking generate-parentheses v0.1.0 (/opt/rustwide/workdir/generate-parentheses)
[INFO] [stdout] warning: unexpected `cfg` condition name: `tes`
[INFO] [stdout]   --> best-time-to-buy-and-sell-stock-iii/src/main.rs:56:7
[INFO] [stdout]    |
[INFO] [stdout] 56 | #[cfg(tes)]
[INFO] [stdout]    |       ^^^ help: there is a config with a similar name: `test`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tes)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tes)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking how-many-numbers-are-smaller-than-the-current-number v0.1.0 (/opt/rustwide/workdir/how-many-numbers-are-smaller-than-the-current-number)
[INFO] [stderr]     Checking binary-search-tree-iterator v0.1.0 (/opt/rustwide/workdir/binary-search-tree-iterator)
[INFO] [stderr]     Checking longest-substring-without-repeating-characters v0.1.0 (/opt/rustwide/workdir/longest-substring-without-repeating-characters)
[INFO] [stderr]     Checking minimum-falling-path-sum v0.1.0 (/opt/rustwide/workdir/minimum-falling-path-sum)
[INFO] [stderr]     Checking add-two-numbers v0.1.0 (/opt/rustwide/workdir/add-two-numbers)
[INFO] [stderr]     Checking string-to-integer-atoi v0.1.0 (/opt/rustwide/workdir/string-to-integer-atoi)
[INFO] [stderr]     Checking validate-binary-search-tree v0.1.0 (/opt/rustwide/workdir/validate-binary-search-tree)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> lian-biao-zhong-dao-shu-di-kge-jie-dian-lcof/src/main.rs:22:6
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 21 |   #[inline]
[INFO] [stdout] 22 |   fn new(val: i32) -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking house-robber v0.1.0 (/opt/rustwide/workdir/house-robber)
[INFO] [stderr]     Checking same-tree v0.1.0 (/opt/rustwide/workdir/same-tree)
[INFO] [stderr]     Checking game-of-life v0.1.0 (/opt/rustwide/workdir/game-of-life)
[INFO] [stderr]     Checking increasing-subsequences v0.1.0 (/opt/rustwide/workdir/increasing-subsequences)
[INFO] [stderr]     Checking unique-binary-search-trees-ii v0.1.0 (/opt/rustwide/workdir/unique-binary-search-trees-ii)
[INFO] [stderr]     Checking edit-distance v0.1.0 (/opt/rustwide/workdir/edit-distance)
[INFO] [stderr]     Checking utf-8-validation v0.1.0 (/opt/rustwide/workdir/utf-8-validation)
[INFO] [stderr]     Checking unique-binary-search-trees v0.1.0 (/opt/rustwide/workdir/unique-binary-search-trees)
[INFO] [stderr]     Checking daily-temperatures v0.1.0 (/opt/rustwide/workdir/daily-temperatures)
[INFO] [stderr]     Checking palindromic-substrings v0.1.0 (/opt/rustwide/workdir/palindromic-substrings)
[INFO] [stderr]     Checking counting-bits v0.1.0 (/opt/rustwide/workdir/counting-bits)
[INFO] [stderr]     Checking two-sum v0.1.0 (/opt/rustwide/workdir/two-sum)
[INFO] [stderr]     Checking minimum-cost-tree-from-leaf-values v0.1.0 (/opt/rustwide/workdir/minimum-cost-tree-from-leaf-values)
[INFO] [stderr]     Checking add-digits v0.1.0 (/opt/rustwide/workdir/add-digits)
[INFO] [stderr]     Checking best-time-to-buy-and-sell-stock-with-transaction-fee v0.1.0 (/opt/rustwide/workdir/best-time-to-buy-and-sell-stock-with-transaction-fee)
[INFO] [stderr]     Checking reverse-words-in-a-string v0.1.0 (/opt/rustwide/workdir/reverse-words-in-a-string)
[INFO] [stderr]     Checking reverse-nodes-in-k-group v0.1.0 (/opt/rustwide/workdir/reverse-nodes-in-k-group)
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> palindromic-substrings/src/main.rs:27:29
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn count_substrings(s: String) -> i32 {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking trapping-rain-water v0.1.0 (/opt/rustwide/workdir/trapping-rain-water)
[INFO] [stderr]     Checking largest-rectangle-in-histogram v0.1.0 (/opt/rustwide/workdir/largest-rectangle-in-histogram)
[INFO] [stdout] warning: unused variable: `arr`
[INFO] [stdout]   --> minimum-cost-tree-from-leaf-values/src/main.rs:34:33
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn mct_from_leaf_values(arr: Vec<i32>) -> i32 {
[INFO] [stdout]    |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_arr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking symmetric-tree v0.1.0 (/opt/rustwide/workdir/symmetric-tree)
[INFO] [stdout] warning: unexpected `cfg` condition name: `tes`
[INFO] [stdout]   --> best-time-to-buy-and-sell-stock-iii/src/main.rs:56:7
[INFO] [stdout]    |
[INFO] [stdout] 56 | #[cfg(tes)]
[INFO] [stdout]    |       ^^^ help: there is a config with a similar name: `test`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tes)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tes)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arr`
[INFO] [stdout]   --> minimum-cost-tree-from-leaf-values/src/main.rs:34:33
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn mct_from_leaf_values(arr: Vec<i32>) -> i32 {
[INFO] [stdout]    |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_arr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `head`
[INFO] [stdout]   --> reverse-nodes-in-k-group/src/main.rs:95:28
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn reverse_k_group(head: Option<Box<ListNode>>, k: i32) -> Option<Box<ListNode>> {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_head`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> reverse-nodes-in-k-group/src/main.rs:95:57
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn reverse_k_group(head: Option<Box<ListNode>>, k: i32) -> Option<Box<ListNode>> {
[INFO] [stdout]    |                                                         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> reverse-nodes-in-k-group/src/main.rs:84:6
[INFO] [stdout]    |
[INFO] [stdout] 82 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 83 |   #[inline]
[INFO] [stdout] 84 |   fn new(val: i32) -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking construct-binary-tree-from-preorder-and-inorder-traversal v0.1.0 (/opt/rustwide/workdir/construct-binary-tree-from-preorder-and-inorder-traversal)
[INFO] [stderr]     Checking house-robber-ii v0.1.0 (/opt/rustwide/workdir/house-robber-ii)
[INFO] [stderr]     Checking divisor-game v0.1.0 (/opt/rustwide/workdir/divisor-game)
[INFO] [stderr]     Checking best-time-to-buy-and-sell-stock-with-cooldown v0.1.0 (/opt/rustwide/workdir/best-time-to-buy-and-sell-stock-with-cooldown)
[INFO] [stderr]     Checking longest-word-in-dictionary v0.1.0 (/opt/rustwide/workdir/longest-word-in-dictionary)
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]   --> palindromic-substrings/src/main.rs:27:29
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn count_substrings(s: String) -> i32 {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking best-time-to-buy-and-sell-stock-iv v0.1.0 (/opt/rustwide/workdir/best-time-to-buy-and-sell-stock-iv)
[INFO] [stderr]     Checking valid-anagram v0.1.0 (/opt/rustwide/workdir/valid-anagram)
[INFO] [stderr]     Checking find-pivot-index v0.1.0 (/opt/rustwide/workdir/find-pivot-index)
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stdout] warning: unused variable: `head`
[INFO] [stdout]   --> reverse-nodes-in-k-group/src/main.rs:95:28
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn reverse_k_group(head: Option<Box<ListNode>>, k: i32) -> Option<Box<ListNode>> {
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_head`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> reverse-nodes-in-k-group/src/main.rs:95:57
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn reverse_k_group(head: Option<Box<ListNode>>, k: i32) -> Option<Box<ListNode>> {
[INFO] [stdout]    |                                                         ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> reverse-nodes-in-k-group/src/main.rs:84:6
[INFO] [stdout]    |
[INFO] [stdout] 82 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 83 |   #[inline]
[INFO] [stdout] 84 |   fn new(val: i32) -> Self {
[INFO] [stdout]    |      ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking sort-an-array v0.1.0 (/opt/rustwide/workdir/sort-an-array)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> sort-an-array/src/main.rs:85:34
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn sort_array_shell_sort(mut nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |                                  ----^^^^
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `insert_group` is never used
[INFO] [stdout]   --> sort-an-array/src/main.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 90 |     fn insert_group() {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> sort-an-array/src/main.rs:85:34
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn sort_array_shell_sort(mut nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]    |                                  ----^^^^
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `insert_group` is never used
[INFO] [stdout]   --> sort-an-array/src/main.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 90 |     fn insert_group() {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "c7b3972f095105c43634c498bc966106f1f4ebdad288be64762bdc6fc3e75fa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7b3972f095105c43634c498bc966106f1f4ebdad288be64762bdc6fc3e75fa9", kill_on_drop: false }`
[INFO] [stdout] c7b3972f095105c43634c498bc966106f1f4ebdad288be64762bdc6fc3e75fa9
