[INFO] cloning repository https://github.com/VoidBird/leetcode-practice-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VoidBird/leetcode-practice-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoidBird%2Fleetcode-practice-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoidBird%2Fleetcode-practice-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aa67b68096fb36a9dc977cb4dcb107b5b1ebc4bd
[INFO] checking VoidBird/leetcode-practice-rust against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoidBird%2Fleetcode-practice-rust" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VoidBird/leetcode-practice-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/VoidBird/leetcode-practice-rust
[INFO] finished tweaking git repo https://github.com/VoidBird/leetcode-practice-rust
[INFO] tweaked toml for git repo https://github.com/VoidBird/leetcode-practice-rust written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/VoidBird/leetcode-practice-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] [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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 15a9b7f4f1d59492dd5210031768654e3fff05c9387cc77617c6a76ecc984d72
[INFO] running `Command { std: "docker" "start" "-a" "15a9b7f4f1d59492dd5210031768654e3fff05c9387cc77617c6a76ecc984d72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15a9b7f4f1d59492dd5210031768654e3fff05c9387cc77617c6a76ecc984d72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15a9b7f4f1d59492dd5210031768654e3fff05c9387cc77617c6a76ecc984d72", kill_on_drop: false }`
[INFO] [stdout] 15a9b7f4f1d59492dd5210031768654e3fff05c9387cc77617c6a76ecc984d72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 2b66eea2340d160003ec23eb0610aaea2bdbeb787ba7d20126f3f6a8d7150ef9
[INFO] running `Command { std: "docker" "start" "-a" "2b66eea2340d160003ec23eb0610aaea2bdbeb787ba7d20126f3f6a8d7150ef9", kill_on_drop: false }`
[INFO] [stderr]     Checking leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `two_sum`
[INFO] [stdout]  --> src/array/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: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `remove_duplicates`
[INFO] [stdout]   --> src/array/easy/remove_duplicates.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn remove_duplicates(nums: &mut Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `remove_duplicates2`
[INFO] [stdout]   --> src/array/easy/remove_duplicates.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn remove_duplicates2(nums: &mut Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `reverse`
[INFO] [stdout]   --> src/array/easy/reverse_num.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn reverse(x: i32) -> i32 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `next_permutation`
[INFO] [stdout]   --> src/array/medium/next_permutation.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn next_permutation(nums: &mut Vec<i32>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `quick_sort`
[INFO] [stdout]   --> src/array/medium/next_permutation.rs:63:4
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn quick_sort(nums: &mut Vec<i32>) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max_area`
[INFO] [stdout]   --> src/array/medium/max_area.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn max_area(height: Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `three_sum`
[INFO] [stdout]   --> src/array/medium/three_sum.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn three_sum(nums: Vec<i32>) -> Vec<Vec<i32>> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_median_sorted_arrays`
[INFO] [stdout]   --> src/array/hard/find_median.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn find_median_sorted_arrays(nums1: Vec<i32>, nums2: Vec<i32>) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `two_sum`
[INFO] [stdout]  --> src/array/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: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `remove_duplicates2`
[INFO] [stdout]   --> src/array/easy/remove_duplicates.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn remove_duplicates2(nums: &mut Vec<i32>) -> i32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "2b66eea2340d160003ec23eb0610aaea2bdbeb787ba7d20126f3f6a8d7150ef9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b66eea2340d160003ec23eb0610aaea2bdbeb787ba7d20126f3f6a8d7150ef9", kill_on_drop: false }`
[INFO] [stdout] 2b66eea2340d160003ec23eb0610aaea2bdbeb787ba7d20126f3f6a8d7150ef9