[INFO] cloning repository https://github.com/noah19846/leetcode-execersice-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/noah19846/leetcode-execersice-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoah19846%2Fleetcode-execersice-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoah19846%2Fleetcode-execersice-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 58b08021a991c99a3c1090eaf61943bfed51ff04
[INFO] checking noah19846/leetcode-execersice-rs against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnoah19846%2Fleetcode-execersice-rs" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/noah19846/leetcode-execersice-rs on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/noah19846/leetcode-execersice-rs
[INFO] finished tweaking git repo https://github.com/noah19846/leetcode-execersice-rs
[INFO] tweaked toml for git repo https://github.com/noah19846/leetcode-execersice-rs written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/noah19846/leetcode-execersice-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d44bbf1f0c110629e5447e3eecd17e8756ece6d75f8679e0ae1cc65a89cc2bb0
[INFO] running `Command { std: "docker" "start" "-a" "d44bbf1f0c110629e5447e3eecd17e8756ece6d75f8679e0ae1cc65a89cc2bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d44bbf1f0c110629e5447e3eecd17e8756ece6d75f8679e0ae1cc65a89cc2bb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d44bbf1f0c110629e5447e3eecd17e8756ece6d75f8679e0ae1cc65a89cc2bb0", kill_on_drop: false }`
[INFO] [stdout] d44bbf1f0c110629e5447e3eecd17e8756ece6d75f8679e0ae1cc65a89cc2bb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ae4a007d59c210cec6d97d63e78ac437688b269f453e371a846bab23f11854d
[INFO] running `Command { std: "docker" "start" "-a" "1ae4a007d59c210cec6d97d63e78ac437688b269f453e371a846bab23f11854d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking leetcode-execersice-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `FizzBuzz`
[INFO] [stdout]  --> src/solutions/fizz_buzz.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct FizzBuzz;
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `fizz_buzz`
[INFO] [stdout]  --> src/solutions/fizz_buzz.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 |   fn fizz_buzz(n: u32) -> Vec<String> {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_fb_string`
[INFO] [stdout]   --> src/solutions/fizz_buzz.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 |   fn get_fb_string(n: u32) -> String {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `MaxtrixTranspose`
[INFO] [stdout]  --> src/solutions/transpose_matrix.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct MaxtrixTranspose;
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `transpose`
[INFO] [stdout]  --> src/solutions/transpose_matrix.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 |   fn transpose(matrix: Vec<Vec<usize>>) -> Vec<Vec<usize>> {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/solutions/trap.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Solution;
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `trap`
[INFO] [stdout]  --> src/solutions/trap.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 |   pub fn trap(height: Vec<i32>) -> i32 {
[INFO] [stdout]   |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `NextGreaterElements`
[INFO] [stdout]  --> src/solutions/next_greater_elements.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct NextGreaterElements;
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_greater_elements`
[INFO] [stdout]  --> src/solutions/next_greater_elements.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 |   fn next_greater_elements(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |      ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `fizz_buzz`
[INFO] [stdout]  --> src/solutions/fizz_buzz.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 |   fn fizz_buzz(n: u32) -> Vec<String> {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "1ae4a007d59c210cec6d97d63e78ac437688b269f453e371a846bab23f11854d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ae4a007d59c210cec6d97d63e78ac437688b269f453e371a846bab23f11854d", kill_on_drop: false }`
[INFO] [stdout] 1ae4a007d59c210cec6d97d63e78ac437688b269f453e371a846bab23f11854d