[INFO] cloning repository https://github.com/just-mitch/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/just-mitch/leetcode-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjust-mitch%2Fleetcode-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjust-mitch%2Fleetcode-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8b4ff5f8f11adf77460b1909a621df3ef5b80e4e
[INFO] testing just-mitch/leetcode-rs against 1.76.0 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjust-mitch%2Fleetcode-rs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/just-mitch/leetcode-rs on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/just-mitch/leetcode-rs
[INFO] finished tweaking git repo https://github.com/just-mitch/leetcode-rs
[INFO] tweaked toml for git repo https://github.com/just-mitch/leetcode-rs written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/just-mitch/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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] testing just-mitch/leetcode-rs against beta-2024-02-10 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjust-mitch%2Fleetcode-rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/just-mitch/leetcode-rs on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/just-mitch/leetcode-rs
[INFO] finished tweaking git repo https://github.com/just-mitch/leetcode-rs
[INFO] tweaked toml for git repo https://github.com/just-mitch/leetcode-rs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/just-mitch/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" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] testing just-mitch/leetcode-rs against beta-2024-02-10 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjust-mitch%2Fleetcode-rs" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/just-mitch/leetcode-rs on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/just-mitch/leetcode-rs
[INFO] finished tweaking git repo https://github.com/just-mitch/leetcode-rs
[INFO] tweaked toml for git repo https://github.com/just-mitch/leetcode-rs written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/just-mitch/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" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b019eaff17d506b10c0607d8b66ea1a56df765dd35f01b62b81595986123b25f
[INFO] running `Command { std: "docker" "start" "-a" "b019eaff17d506b10c0607d8b66ea1a56df765dd35f01b62b81595986123b25f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b019eaff17d506b10c0607d8b66ea1a56df765dd35f01b62b81595986123b25f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b019eaff17d506b10c0607d8b66ea1a56df765dd35f01b62b81595986123b25f", kill_on_drop: false }`
[INFO] [stdout] b019eaff17d506b10c0607d8b66ea1a56df765dd35f01b62b81595986123b25f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7100dbc39414a022b4295f1166fcdf9ce5e5fbe3b35bd49cf2663110513c3292
[INFO] running `Command { std: "docker" "start" "-a" "7100dbc39414a022b4295f1166fcdf9ce5e5fbe3b35bd49cf2663110513c3292", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated items `new`, `append`, and `from_vec` are never used
[INFO] [stdout]   --> src/data_structures/list_node.rs:9:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl ListNode {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 8  |   #[inline]
[INFO] [stdout] 9  |   pub fn new(val: i32) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |   pub fn append(&mut self, val: i32) {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |   pub fn from_vec(vec: Vec<i32>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/two_sum/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `two_sum` is never used
[INFO] [stdout]  --> src/two_sum/mod.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 5 |   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/merge_two_sorted_lists/mod.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Solution {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `merge_two_lists` is never used
[INFO] [stdout]  --> src/merge_two_sorted_lists/mod.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 7 |   pub fn merge_two_lists(list1: Option<Box<ListNode>>, list2: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/generate_parentheses/mod.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `generate_parenthesis` is never used
[INFO] [stdout]  --> src/generate_parentheses/mod.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 5 |   pub fn generate_parenthesis(n: i32) -> Vec<String> {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/swap_nodes_in_pairs/mod.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `swap_pairs` is never used
[INFO] [stdout]  --> src/swap_nodes_in_pairs/mod.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |   pub fn swap_pairs(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/remove_element/mod.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `remove_element` is never used
[INFO] [stdout]  --> src/remove_element/mod.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 5 |   pub fn remove_element(nums: &mut Vec<i32>, val: i32) -> i32 {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/find_the_index_of_the_first_occurrence_in_a_string/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `str_str` is never used
[INFO] [stdout]  --> src/find_the_index_of_the_first_occurrence_in_a_string/mod.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |   pub fn str_str(haystack: String, needle: String) -> i32 {
[INFO] [stdout]   |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/next_permutation/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `next_permutation` is never used
[INFO] [stdout]  --> src/next_permutation/mod.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |   pub fn next_permutation(nums: &mut Vec<i32>) {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/unique_paths/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `unique_paths` is never used
[INFO] [stdout]  --> src/unique_paths/mod.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |   pub fn unique_paths(m: i32, n: i32) -> i32 {
[INFO] [stdout]   |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "7100dbc39414a022b4295f1166fcdf9ce5e5fbe3b35bd49cf2663110513c3292", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7100dbc39414a022b4295f1166fcdf9ce5e5fbe3b35bd49cf2663110513c3292", kill_on_drop: false }`
[INFO] [stdout] 7100dbc39414a022b4295f1166fcdf9ce5e5fbe3b35bd49cf2663110513c3292
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fcbc87102550c44a3bfefb5cb81e574f60adb5b7e845ebeb9e9917035daa430
[INFO] running `Command { std: "docker" "start" "-a" "4fcbc87102550c44a3bfefb5cb81e574f60adb5b7e845ebeb9e9917035daa430", kill_on_drop: false }`
[INFO] [stdout] warning: associated items `new`, `append`, and `from_vec` are never used
[INFO] [stdout]   --> src/data_structures/list_node.rs:9:10
[INFO] [stdout]    |
[INFO] [stdout] 7  | impl ListNode {
[INFO] [stdout]    | ------------- associated items in this implementation
[INFO] [stdout] 8  |   #[inline]
[INFO] [stdout] 9  |   pub fn new(val: i32) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |   pub fn append(&mut self, val: i32) {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |   pub fn from_vec(vec: Vec<i32>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/two_sum/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `two_sum` is never used
[INFO] [stdout]  --> src/two_sum/mod.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 5 |   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/merge_two_sorted_lists/mod.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Solution {}
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `merge_two_lists` is never used
[INFO] [stdout]  --> src/merge_two_sorted_lists/mod.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 7 |   pub fn merge_two_lists(list1: Option<Box<ListNode>>, list2: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/generate_parentheses/mod.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `generate_parenthesis` is never used
[INFO] [stdout]  --> src/generate_parentheses/mod.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 5 |   pub fn generate_parenthesis(n: i32) -> Vec<String> {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/swap_nodes_in_pairs/mod.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `swap_pairs` is never used
[INFO] [stdout]  --> src/swap_nodes_in_pairs/mod.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |   pub fn swap_pairs(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/remove_element/mod.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `remove_element` is never used
[INFO] [stdout]  --> src/remove_element/mod.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 5 |   pub fn remove_element(nums: &mut Vec<i32>, val: i32) -> i32 {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/find_the_index_of_the_first_occurrence_in_a_string/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `str_str` is never used
[INFO] [stdout]  --> src/find_the_index_of_the_first_occurrence_in_a_string/mod.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |   pub fn str_str(haystack: String, needle: String) -> i32 {
[INFO] [stdout]   |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/next_permutation/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `next_permutation` is never used
[INFO] [stdout]  --> src/next_permutation/mod.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |   pub fn next_permutation(nums: &mut Vec<i32>) {
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/unique_paths/mod.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Solution;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `unique_paths` is never used
[INFO] [stdout]  --> src/unique_paths/mod.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 4 |   pub fn unique_paths(m: i32, n: i32) -> i32 {
[INFO] [stdout]   |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling leetcode-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `Command { std: "docker" "inspect" "4fcbc87102550c44a3bfefb5cb81e574f60adb5b7e845ebeb9e9917035daa430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fcbc87102550c44a3bfefb5cb81e574f60adb5b7e845ebeb9e9917035daa430", kill_on_drop: false }`
[INFO] [stdout] 4fcbc87102550c44a3bfefb5cb81e574f60adb5b7e845ebeb9e9917035daa430
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f7960ec50ef5d8e1a82e23957184f2f1e600ca72cc3fc8d3129a4d22a016b501
[INFO] running `Command { std: "docker" "start" "-a" "f7960ec50ef5d8e1a82e23957184f2f1e600ca72cc3fc8d3129a4d22a016b501", kill_on_drop: false }`
[INFO] [stderr] warning: associated items `new`, `append`, and `from_vec` are never used
[INFO] [stderr]   --> src/data_structures/list_node.rs:9:10
[INFO] [stderr]    |
[INFO] [stderr] 7  | impl ListNode {
[INFO] [stderr]    | ------------- associated items in this implementation
[INFO] [stderr] 8  |   #[inline]
[INFO] [stderr] 9  |   pub fn new(val: i32) -> Self {
[INFO] [stderr]    |          ^^^
[INFO] [stderr] ...
[INFO] [stderr] 16 |   pub fn append(&mut self, val: i32) {
[INFO] [stderr]    |          ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 24 |   pub fn from_vec(vec: Vec<i32>) -> Option<Box<ListNode>> {
[INFO] [stderr]    |          ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]  --> src/two_sum/mod.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `two_sum` is never used
[INFO] [stderr]  --> src/two_sum/mod.rs:5:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | impl Solution {
[INFO] [stderr]   | ------------- associated function in this implementation
[INFO] [stderr] 5 |   pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stderr]   |          ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]  --> src/merge_two_sorted_lists/mod.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct Solution {}
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `merge_two_lists` is never used
[INFO] [stderr]  --> src/merge_two_sorted_lists/mod.rs:7:10
[INFO] [stderr]   |
[INFO] [stderr] 6 | impl Solution {
[INFO] [stderr]   | ------------- associated function in this implementation
[INFO] [stderr] 7 |   pub fn merge_two_lists(list1: Option<Box<ListNode>>, list2: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]  --> src/generate_parentheses/mod.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `generate_parenthesis` is never used
[INFO] [stderr]  --> src/generate_parentheses/mod.rs:5:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | impl Solution {
[INFO] [stderr]   | ------------- associated function in this implementation
[INFO] [stderr] 5 |   pub fn generate_parenthesis(n: i32) -> Vec<String> {
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]  --> src/swap_nodes_in_pairs/mod.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `swap_pairs` is never used
[INFO] [stderr]  --> src/swap_nodes_in_pairs/mod.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 3 | impl Solution {
[INFO] [stderr]   | ------------- associated function in this implementation
[INFO] [stderr] 4 |   pub fn swap_pairs(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stderr]   |          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]  --> src/remove_element/mod.rs:2:8
[INFO] [stderr]   |
[INFO] [stderr] 2 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `remove_element` is never used
[INFO] [stderr]  --> src/remove_element/mod.rs:5:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | impl Solution {
[INFO] [stderr]   | ------------- associated function in this implementation
[INFO] [stderr] 5 |   pub fn remove_element(nums: &mut Vec<i32>, val: i32) -> i32 {
[INFO] [stderr]   |          ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]  --> src/find_the_index_of_the_first_occurrence_in_a_string/mod.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `str_str` is never used
[INFO] [stderr]  --> src/find_the_index_of_the_first_occurrence_in_a_string/mod.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 3 | impl Solution {
[INFO] [stderr]   | ------------- associated function in this implementation
[INFO] [stderr] 4 |   pub fn str_str(haystack: String, needle: String) -> i32 {
[INFO] [stderr]   |          ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]  --> src/next_permutation/mod.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `next_permutation` is never used
[INFO] [stderr]  --> src/next_permutation/mod.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 3 | impl Solution {
[INFO] [stderr]   | ------------- associated function in this implementation
[INFO] [stderr] 4 |   pub fn next_permutation(nums: &mut Vec<i32>) {
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Solution` is never constructed
[INFO] [stderr]  --> src/unique_paths/mod.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct Solution;
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `unique_paths` is never used
[INFO] [stderr]  --> src/unique_paths/mod.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 3 | impl Solution {
[INFO] [stderr]   | ------------- associated function in this implementation
[INFO] [stderr] 4 |   pub fn unique_paths(m: i32, n: i32) -> i32 {
[INFO] [stderr]   |          ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `leetcode-rs` (lib) generated 17 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/leetcode_rs-4bf55fea8a9fc0cd)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test find_the_index_of_the_first_occurrence_in_a_string::tests::test_28 ... ok
[INFO] [stdout] test merge_two_sorted_lists::tests::test_1 ... ok
[INFO] [stdout] test next_permutation::tests::test_2 ... ok
[INFO] [stdout] test next_permutation::tests::test_1 ... ok
[INFO] [stdout] test two_sum::tests::test_3 ... ok
[INFO] [stdout] test two_sum::tests::test_4 ... ok
[INFO] [stdout] test next_permutation::tests::test_4 ... ok
[INFO] [stdout] test unique_paths::tests::test_62 ... ok
[INFO] [stdout] test two_sum::tests::test_1 ... ok
[INFO] [stdout] test generate_parentheses::tests::test_22 ... ok
[INFO] [stdout] test swap_nodes_in_pairs::tests::test_1 ... ok
[INFO] [stdout] test next_permutation::tests::test_3 ... ok
[INFO] [stdout] test remove_element::tests::test_27 ... ok
[INFO] [stdout] test two_sum::tests::test_2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests leetcode-rs
[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] running `Command { std: "docker" "inspect" "f7960ec50ef5d8e1a82e23957184f2f1e600ca72cc3fc8d3129a4d22a016b501", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7960ec50ef5d8e1a82e23957184f2f1e600ca72cc3fc8d3129a4d22a016b501", kill_on_drop: false }`
[INFO] [stdout] f7960ec50ef5d8e1a82e23957184f2f1e600ca72cc3fc8d3129a4d22a016b501
