[INFO] cloning repository https://github.com/dockcy/rust-leetcode-hot100
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dockcy/rust-leetcode-hot100" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Frust-leetcode-hot100", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Frust-leetcode-hot100'...
[INFO] [stderr] fatal: write error: No space left on device
[INFO] [stderr] fatal: fetch-pack: invalid index-pack output
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/dockcy/rust-leetcode-hot100
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dockcy/rust-leetcode-hot100" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Frust-leetcode-hot100", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Frust-leetcode-hot100'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Frust-leetcode-hot100: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 2)
[INFO] cloning repository https://github.com/dockcy/rust-leetcode-hot100
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dockcy/rust-leetcode-hot100" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Frust-leetcode-hot100", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Frust-leetcode-hot100'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Frust-leetcode-hot100: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 3)
[INFO] cloning repository https://github.com/dockcy/rust-leetcode-hot100
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dockcy/rust-leetcode-hot100" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Frust-leetcode-hot100", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Frust-leetcode-hot100'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Frust-leetcode-hot100: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 4)
[INFO] cloning repository https://github.com/dockcy/rust-leetcode-hot100
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dockcy/rust-leetcode-hot100" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Frust-leetcode-hot100", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Frust-leetcode-hot100'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 316b5a36e8adc246237a76c65e8f68e44f4323bb
[INFO] checking dockcy/rust-leetcode-hot100 against master#9c67cecd12d79f1bbc00a74f70e7ef9fff086a5a for pr-138458
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Frust-leetcode-hot100" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dockcy/rust-leetcode-hot100 on toolchain 9c67cecd12d79f1bbc00a74f70e7ef9fff086a5a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c67cecd12d79f1bbc00a74f70e7ef9fff086a5a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dockcy/rust-leetcode-hot100
[INFO] finished tweaking git repo https://github.com/dockcy/rust-leetcode-hot100
[INFO] tweaked toml for git repo https://github.com/dockcy/rust-leetcode-hot100 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dockcy/rust-leetcode-hot100 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" "+9c67cecd12d79f1bbc00a74f70e7ef9fff086a5a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+9c67cecd12d79f1bbc00a74f70e7ef9fff086a5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 169344aff48ee6e78a87722a5626216b22113b8b8d42ef09913f7d12cf3b3939
[INFO] running `Command { std: "docker" "start" "-a" "169344aff48ee6e78a87722a5626216b22113b8b8d42ef09913f7d12cf3b3939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "169344aff48ee6e78a87722a5626216b22113b8b8d42ef09913f7d12cf3b3939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "169344aff48ee6e78a87722a5626216b22113b8b8d42ef09913f7d12cf3b3939", kill_on_drop: false }`
[INFO] [stdout] 169344aff48ee6e78a87722a5626216b22113b8b8d42ef09913f7d12cf3b3939
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+9c67cecd12d79f1bbc00a74f70e7ef9fff086a5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8de56b2305ae06a2039f27b169081a66cc003217ce31949c46312acf9323fc46
[INFO] running `Command { std: "docker" "start" "-a" "8de56b2305ae06a2039f27b169081a66cc003217ce31949c46312acf9323fc46", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-leetcode-hot100 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0001_two_sums.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `two_sum` is never used
[INFO] [stdout]   --> src/solution/no_0001_two_sums.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 36 |     pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0049_group_anagrams.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `group_anagrams` is never used
[INFO] [stdout]   --> src/solution/no_0049_group_anagrams.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 30 |     pub fn group_anagrams(strs: Vec<String>) -> Vec<Vec<String>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0128_longest_consecutive.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `longest_consecutive` is never used
[INFO] [stdout]   --> src/solution/no_0128_longest_consecutive.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 26 |     pub fn longest_consecutive(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0283_move_zeros.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `move_zeroes` is never used
[INFO] [stdout]   --> src/solution/no_0283_move_zeros.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 25 |     pub fn move_zeroes(nums: &mut Vec<i32>) {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0011_container_with_most_water.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `max_area` is never used
[INFO] [stdout]   --> src/solution/no_0011_container_with_most_water.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 28 |     pub fn max_area(height: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0015_three_sum.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `three_sum` is never used
[INFO] [stdout]   --> src/solution/no_0015_three_sum.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 37 |     pub fn three_sum(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0042_trapping_rain_water.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `trap` is never used
[INFO] [stdout]   --> src/solution/no_0042_trapping_rain_water.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 26 |     pub fn trap(height: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0003_length_of_longest_substring.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `length_of_longest_substring` is never used
[INFO] [stdout]   --> src/solution/no_0003_length_of_longest_substring.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 31 |     pub fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0438_find_anagrams.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `find_anagrams` is never used
[INFO] [stdout]   --> src/solution/no_0438_find_anagrams.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 31 |     pub fn find_anagrams(s: String, p: String) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0560_subarray_sum.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `subarray_sum` is never used
[INFO] [stdout]   --> src/solution/no_0560_subarray_sum.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 26 |     pub fn subarray_sum(nums: Vec<i32>, k: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0239_max_sliding_window.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `max_sliding_window` is never used
[INFO] [stdout]   --> src/solution/no_0239_max_sliding_window.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 38 |     pub fn max_sliding_window(nums: Vec<i32>, k: i32) -> Vec<i32> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/solution/no_0206_reverse_list.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl ListNode {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 33 |     #[inline]
[INFO] [stdout] 34 |     fn new(val: i32) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0206_reverse_list.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `reverse_list` is never used
[INFO] [stdout]   --> src/solution/no_0206_reverse_list.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 45 |     pub fn reverse_list(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0035_search_insert.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `search_insert` is never used
[INFO] [stdout]   --> src/solution/no_0035_search_insert.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 33 |     pub fn search_insert(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0070_climb_stairs.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `climb_stairs` is never used
[INFO] [stdout]   --> src/solution/no_0070_climb_stairs.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn climb_stairs(n: i32) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0121_max_profit.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `max_profit` is never used
[INFO] [stdout]   --> src/solution/no_0121_max_profit.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 32 |     pub fn max_profit(prices: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0118_pascal_triangle.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `generate` is never used
[INFO] [stdout]   --> src/solution/no_0118_pascal_triangle.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 27 |     pub fn generate(num_rows: i32) -> Vec<Vec<i32>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0020_valid_parentheses.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `is_valid` is never used
[INFO] [stdout]   --> src/solution/no_0020_valid_parentheses.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 40 |     pub fn is_valid(s: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0136_single_number.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `single_number` is never used
[INFO] [stdout]   --> src/solution/no_0136_single_number.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 35 |     pub fn single_number(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0169_majority_element.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `majority_element` is never used
[INFO] [stdout]   --> src/solution/no_0169_majority_element.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 30 |     pub fn majority_element(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]   --> src/solution/no_0234_is_palindrome_linklist.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct Solution {}
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `is_palindrome` is never used
[INFO] [stdout]   --> src/solution/no_0234_is_palindrome_linklist.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl Solution {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 40 |     pub fn is_palindrome(head: Option<Box<ListNode>>) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/main.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let s = "hello";
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]  --> src/main.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let s = "hello";
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "8de56b2305ae06a2039f27b169081a66cc003217ce31949c46312acf9323fc46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8de56b2305ae06a2039f27b169081a66cc003217ce31949c46312acf9323fc46", kill_on_drop: false }`
[INFO] [stdout] 8de56b2305ae06a2039f27b169081a66cc003217ce31949c46312acf9323fc46