[INFO] cloning repository https://github.com/ja153903/rust-leetcode
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ja153903/rust-leetcode" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fja153903%2Frust-leetcode", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fja153903%2Frust-leetcode'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 22290fa3f04cab0e53c356695b134de38afefbb7
[INFO] checking ja153903/rust-leetcode against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fja153903%2Frust-leetcode" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ja153903/rust-leetcode on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ja153903/rust-leetcode
[INFO] finished tweaking git repo https://github.com/ja153903/rust-leetcode
[INFO] tweaked toml for git repo https://github.com/ja153903/rust-leetcode written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/ja153903/rust-leetcode already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4a4e7ac3caee9f0b8cc3faa1b5d7ffd7112f1c0516339a8c9d8af86bae1ccfc6
[INFO] running `Command { std: "docker" "start" "-a" "4a4e7ac3caee9f0b8cc3faa1b5d7ffd7112f1c0516339a8c9d8af86bae1ccfc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a4e7ac3caee9f0b8cc3faa1b5d7ffd7112f1c0516339a8c9d8af86bae1ccfc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a4e7ac3caee9f0b8cc3faa1b5d7ffd7112f1c0516339a8c9d8af86bae1ccfc6", kill_on_drop: false }`
[INFO] [stdout] 4a4e7ac3caee9f0b8cc3faa1b5d7ffd7112f1c0516339a8c9d8af86bae1ccfc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eebe79e868b585d91eac36e3e2072af2b0fbf2ab7b8ff7041b1bb5ccea6d8620
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "eebe79e868b585d91eac36e3e2072af2b0fbf2ab7b8ff7041b1bb5ccea6d8620", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `add_binary`
[INFO] [stdout]  --> src/easy/add_binary.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn add_binary(a: String, b: String) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `add_strings`
[INFO] [stdout]  --> src/easy/add_strings.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn add_strings(num1: String, num2: String) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max_profit`
[INFO] [stdout]  --> src/easy/best_time_to_buy_sell_stock.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn max_profit(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `climb_stairs`
[INFO] [stdout]  --> src/easy/climb_stairs.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn climb_stairs(n: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `first_uniq_char`
[INFO] [stdout]  --> src/easy/first_unique_character_string.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn first_uniq_char(s: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_happy`
[INFO] [stdout]  --> src/easy/happy_number.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn is_happy(n: i32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `longest_common_prefix`
[INFO] [stdout]  --> src/easy/longest_common_prefix.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn longest_common_prefix(strs: Vec<String>) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max_sub_array`
[INFO] [stdout]  --> src/easy/maximum_subarray.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn max_sub_array(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `merge`
[INFO] [stdout]  --> src/easy/merge_sorted_array.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn merge(nums1: &mut Vec<i32>, m: i32, nums2: &mut Vec<i32>, n: i32) {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `most_common_word`
[INFO] [stdout]  --> src/easy/most_common_word.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn most_common_word(paragraph: String, banned: Vec<String>) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_palindrome`
[INFO] [stdout]  --> src/easy/palindrome_number.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn is_palindrome(x: i32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reorder_log_files`
[INFO] [stdout]  --> src/easy/reorder_data_in_log_files.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn reorder_log_files(logs: Vec<String>) -> Vec<String> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_digit_log`
[INFO] [stdout]   --> src/easy/reorder_data_in_log_files.rs:33:4
[INFO] [stdout]    |
[INFO] [stdout] 33 | fn is_digit_log(log: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse`
[INFO] [stdout]  --> src/easy/reverse_integer.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn reverse(x: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `roman_to_int`
[INFO] [stdout]  --> src/easy/roman_to_integer.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn roman_to_int(s: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `single_number`
[INFO] [stdout]  --> src/easy/single_number.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn single_number(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `two_sum`
[INFO] [stdout]  --> src/easy/two_sum.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn two_sum(nums: Vec<i32>, target: i32) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/easy/two_sum.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[warn(dead_code)]
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `valid_palindrome`
[INFO] [stdout]  --> src/easy/valid_palindrome_ii.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn valid_palindrome(s: String) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_valid`
[INFO] [stdout]  --> src/easy/valid_parenthesis.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn is_valid(s: String) -> bool {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_alien_sorted`
[INFO] [stdout]  --> src/easy/verifying_an_alien_dictionary.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn is_alien_sorted(words: Vec<String>, order: String) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "eebe79e868b585d91eac36e3e2072af2b0fbf2ab7b8ff7041b1bb5ccea6d8620", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eebe79e868b585d91eac36e3e2072af2b0fbf2ab7b8ff7041b1bb5ccea6d8620", kill_on_drop: false }`
[INFO] [stdout] eebe79e868b585d91eac36e3e2072af2b0fbf2ab7b8ff7041b1bb5ccea6d8620