[INFO] cloning repository https://github.com/ykwmz/leetcode-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ykwmz/leetcode-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fykwmz%2Fleetcode-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fykwmz%2Fleetcode-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9b14f94e0ffe94ad27f2acc7152aecabf4a997d
[INFO] checking ykwmz/leetcode-rust against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fykwmz%2Fleetcode-rust" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ykwmz/leetcode-rust on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ykwmz/leetcode-rust
[INFO] finished tweaking git repo https://github.com/ykwmz/leetcode-rust
[INFO] tweaked toml for git repo https://github.com/ykwmz/leetcode-rust written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/ykwmz/leetcode-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5587731a07114b69fe634a1bff20c67f3f8c0ccd3bee5d2843253a096212893a
[INFO] running `Command { std: "docker" "start" "-a" "5587731a07114b69fe634a1bff20c67f3f8c0ccd3bee5d2843253a096212893a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5587731a07114b69fe634a1bff20c67f3f8c0ccd3bee5d2843253a096212893a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5587731a07114b69fe634a1bff20c67f3f8c0ccd3bee5d2843253a096212893a", kill_on_drop: false }`
[INFO] [stdout] 5587731a07114b69fe634a1bff20c67f3f8c0ccd3bee5d2843253a096212893a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52cf0978144e312c3c61fe7e9152699f569db60b88472ed0e5d01e048713ec6c
[INFO] running `Command { std: "docker" "start" "-a" "52cf0978144e312c3c61fe7e9152699f569db60b88472ed0e5d01e048713ec6c", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/add_two_numbers.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 |    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: function is never used: `add_two_numbers`
[INFO] [stdout]   --> src/add_two_numbers.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn add_two_numbers(l1: Option<Box<ListNode>>, l2: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `length_of_longest_substring`
[INFO] [stdout]  --> src/length_of_longest_substring.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_median_sorted_arrays`
[INFO] [stdout]  --> src/find_median_sorted_arrays.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn find_median_sorted_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `longest_palindrome`
[INFO] [stdout]  --> src/longest_palindrome.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn longest_palindrome(s: String) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zigzag_convert`
[INFO] [stdout]  --> src/zigzag_convert.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn zigzag_convert(s: String, num_rows: i32) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse`
[INFO] [stdout]  --> src/reverse_integer.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn reverse(x: i32) -> i32 {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_error_nums`
[INFO] [stdout]  --> src/find_error_nums.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn find_error_nums(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `display_table`
[INFO] [stdout]  --> src/display_table.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn display_table(orders: Vec<Vec<String>>) -> Vec<Vec<String>> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `count_pairs`
[INFO] [stdout]  --> src/count_pairs.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn count_pairs(deliciousness: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `num_subarrays_with_sum`
[INFO] [stdout]  --> src/num_subarrays_with_sum.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn num_subarrays_with_sum(nums: Vec<i32>, goal: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `majority_element`
[INFO] [stdout]  --> src/majority_element.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn majority_element(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TimeMap`
[INFO] [stdout]   --> src/time_map.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct TimeMap {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/time_map.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set`
[INFO] [stdout]   --> src/time_map.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn set(&mut self, key: String, value: String, timestamp: i32) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> src/time_map.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn get(&self, key: String, timestamp: i32) -> String {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `maximum_element_after_decrementing_and_rearranging`
[INFO] [stdout]   --> src/maximum_element_after_decrementing_and_rearranging.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn maximum_element_after_decrementing_and_rearranging(arr: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `search`
[INFO] [stdout]  --> src/search.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn search(nums: Vec<i32>, target: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max_sub_array`
[INFO] [stdout]  --> src/max_sub_array.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn max_sub_array(nums: Vec<i32>) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `group_anagrams`
[INFO] [stdout]  --> src/group_anagrams.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn group_anagrams(strs: Vec<String>) -> Vec<Vec<String>> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max_frequency`
[INFO] [stdout]   --> src/max_frequency.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn max_frequency(nums: Vec<i32>, k: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `min_pair_sum`
[INFO] [stdout]   --> src/min_pair_sum.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn min_pair_sum(nums: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_covered`
[INFO] [stdout]  --> src/is_covered.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn is_covered(ranges: Vec<Vec<i32>>, left: i32, right: i32) -> bool {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `min_operations`
[INFO] [stdout]   --> src/min_operations.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn min_operations(target: Vec<i32>, arr: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/find_second_minimum_value.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |   pub fn new(val: i32) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_second_minimum_value`
[INFO] [stdout]   --> src/find_second_minimum_value.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn find_second_minimum_value(root: Option<Rc<RefCell<TreeNode>>>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.44s
[INFO] running `Command { std: "docker" "inspect" "52cf0978144e312c3c61fe7e9152699f569db60b88472ed0e5d01e048713ec6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52cf0978144e312c3c61fe7e9152699f569db60b88472ed0e5d01e048713ec6c", kill_on_drop: false }`
[INFO] [stdout] 52cf0978144e312c3c61fe7e9152699f569db60b88472ed0e5d01e048713ec6c