[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] 3394264375dbd0708229aa739f8208eef47c9222
[INFO] checking ykwmz/leetcode-rust against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fykwmz%2Fleetcode-rust" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ykwmz/leetcode-rust on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", 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-9/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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 201bccb94fad9fbf53d40cee20aa7584c3260c2c40f9198dad65e1e9e87f0002
[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" "201bccb94fad9fbf53d40cee20aa7584c3260c2c40f9198dad65e1e9e87f0002", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "201bccb94fad9fbf53d40cee20aa7584c3260c2c40f9198dad65e1e9e87f0002", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "201bccb94fad9fbf53d40cee20aa7584c3260c2c40f9198dad65e1e9e87f0002", kill_on_drop: false }`
[INFO] [stdout] 201bccb94fad9fbf53d40cee20aa7584c3260c2c40f9198dad65e1e9e87f0002
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 297f63a1f9ff6fe942302e022d283ad101086163ab2e0fdc66118016c8b86525
[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" "297f63a1f9ff6fe942302e022d283ad101086163ab2e0fdc66118016c8b86525", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `max`, `min`
[INFO] [stdout]  --> src/zigzag_convert.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::{max, min};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `max`, `min`
[INFO] [stdout]  --> src/zigzag_convert.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::{max, min};
[INFO] [stdout]   |                ^^^  ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[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:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn length_of_longest_substring(s: String) -> i32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `length_of_longest_substring2`
[INFO] [stdout]   --> src/length_of_longest_substring.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn length_of_longest_substring2(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: `find_median_sorted_arrays3`
[INFO] [stdout]   --> src/find_median_sorted_arrays.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn find_median_sorted_arrays3(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_median_sorted_arrays2`
[INFO] [stdout]    --> src/find_median_sorted_arrays.rs:142:4
[INFO] [stdout]     |
[INFO] [stdout] 142 | fn find_median_sorted_arrays2(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: `longest_palindrome2`
[INFO] [stdout]   --> src/longest_palindrome.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn longest_palindrome2(s: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `zigzag_convert`
[INFO] [stdout]  --> src/zigzag_convert.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn zigzag_convert(s: String, num_rows: i32) -> String {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]  --> src/longest_palindrome.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 |         while sub_left>=0 && sub_right<s.len() && s.get(sub_left..sub_left+1).unwrap() == s.get(sub_right..sub_right+1).unwrap() {
[INFO] [stdout]   |               ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `length_of_longest_substring2`
[INFO] [stdout]   --> src/length_of_longest_substring.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn length_of_longest_substring2(s: String) -> i32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_median_sorted_arrays3`
[INFO] [stdout]   --> src/find_median_sorted_arrays.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn find_median_sorted_arrays3(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_median_sorted_arrays2`
[INFO] [stdout]    --> src/find_median_sorted_arrays.rs:142:4
[INFO] [stdout]     |
[INFO] [stdout] 142 | fn find_median_sorted_arrays2(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `longest_palindrome2`
[INFO] [stdout]   --> src/longest_palindrome.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn longest_palindrome2(s: String) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]  --> src/longest_palindrome.rs:8:15
[INFO] [stdout]   |
[INFO] [stdout] 8 |         while sub_left>=0 && sub_right<s.len() && s.get(sub_left..sub_left+1).unwrap() == s.get(sub_right..sub_right+1).unwrap() {
[INFO] [stdout]   |               ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "297f63a1f9ff6fe942302e022d283ad101086163ab2e0fdc66118016c8b86525", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "297f63a1f9ff6fe942302e022d283ad101086163ab2e0fdc66118016c8b86525", kill_on_drop: false }`
[INFO] [stdout] 297f63a1f9ff6fe942302e022d283ad101086163ab2e0fdc66118016c8b86525