[INFO] cloning repository https://github.com/jongyunha/leetcode-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jongyunha/leetcode-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjongyunha%2Fleetcode-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjongyunha%2Fleetcode-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 616a1be81409c51e2006d6338b81e3083c1c250c
[INFO] checking jongyunha/leetcode-solver/616a1be81409c51e2006d6338b81e3083c1c250c against 1af98b7cdf86932b76182a387f52f1be6f0c1be0 for pr-159706
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjongyunha%2Fleetcode-solver" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jongyunha/leetcode-solver
[INFO] finished tweaking git repo https://github.com/jongyunha/leetcode-solver
[INFO] tweaked toml for git repo https://github.com/jongyunha/leetcode-solver written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jongyunha/leetcode-solver on toolchain 1af98b7cdf86932b76182a387f52f1be6f0c1be0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1af98b7cdf86932b76182a387f52f1be6f0c1be0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jongyunha/leetcode-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1af98b7cdf86932b76182a387f52f1be6f0c1be0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:00c5645b54fe3ce5dae1417175e3c7fb6a6646c021d554ecd63a097b8b9f3602" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 93764ccf5d7bb576192163c8b0574a078ff70fc64234e7749276e98831b1f8ec
[INFO] running `Command { std: "docker" "start" "93764ccf5d7bb576192163c8b0574a078ff70fc64234e7749276e98831b1f8ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93764ccf5d7bb576192163c8b0574a078ff70fc64234e7749276e98831b1f8ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "93764ccf5d7bb576192163c8b0574a078ff70fc64234e7749276e98831b1f8ec" "/opt/rustwide/cargo-home/bin/cargo" "+1af98b7cdf86932b76182a387f52f1be6f0c1be0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93764ccf5d7bb576192163c8b0574a078ff70fc64234e7749276e98831b1f8ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "93764ccf5d7bb576192163c8b0574a078ff70fc64234e7749276e98831b1f8ec" "/opt/rustwide/cargo-home/bin/cargo" "+1af98b7cdf86932b76182a387f52f1be6f0c1be0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-leetcode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ops::Sub`
[INFO] [stdout]  --> src/easy/score_of_a_string.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Sub;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::easy`
[INFO] [stdout]  --> src/tests/test_concatenation_of_array.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::easy;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::easy::score_of_a_string::Solution`
[INFO] [stdout]  --> src/tests/test_score_of_a_string.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::easy::score_of_a_string::Solution;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Sub`
[INFO] [stdout]  --> src/easy/score_of_a_string.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::Sub;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/easy/concatenation_of_array.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Solution;
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `get_concatenation` is never used
[INFO] [stdout]  --> src/easy/concatenation_of_array.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 3 |     pub fn get_concatenation(nums: Vec<i32>) -> Vec<i32> {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Solution` is never constructed
[INFO] [stdout]  --> src/easy/score_of_a_string.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Solution;
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `score_of_string` is never used
[INFO] [stdout]  --> src/easy/score_of_a_string.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | impl Solution {
[INFO] [stdout]   | ------------- associated function in this implementation
[INFO] [stdout] 5 |     pub fn score_of_string(s: String) -> i32 {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "93764ccf5d7bb576192163c8b0574a078ff70fc64234e7749276e98831b1f8ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93764ccf5d7bb576192163c8b0574a078ff70fc64234e7749276e98831b1f8ec", kill_on_drop: false }`
[INFO] [stdout] 93764ccf5d7bb576192163c8b0574a078ff70fc64234e7749276e98831b1f8ec
