[INFO] cloning repository https://github.com/ALMaclaine/leetcode_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ALMaclaine/leetcode_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FALMaclaine%2Fleetcode_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FALMaclaine%2Fleetcode_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 05aeb3090747afa2bb99079f0611afe1dde17596
[INFO] building ALMaclaine/leetcode_rs against master#222c5724ecc922fe67815f428c19f82c129d9386 for pr-97334
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FALMaclaine%2Fleetcode_rs" "/workspace/builds/worker-37/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-37/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ALMaclaine/leetcode_rs on toolchain 222c5724ecc922fe67815f428c19f82c129d9386
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ALMaclaine/leetcode_rs
[INFO] finished tweaking git repo https://github.com/ALMaclaine/leetcode_rs
[INFO] tweaked toml for git repo https://github.com/ALMaclaine/leetcode_rs written to /workspace/builds/worker-37/source/Cargo.toml
[INFO] crate git repo https://github.com/ALMaclaine/leetcode_rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bd6753425161432af958a60dba9ad92949ab88bbb5fa85224283080daa941ad
[INFO] running `Command { std: "docker" "start" "-a" "4bd6753425161432af958a60dba9ad92949ab88bbb5fa85224283080daa941ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bd6753425161432af958a60dba9ad92949ab88bbb5fa85224283080daa941ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bd6753425161432af958a60dba9ad92949ab88bbb5fa85224283080daa941ad", kill_on_drop: false }`
[INFO] [stdout] 4bd6753425161432af958a60dba9ad92949ab88bbb5fa85224283080daa941ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d591e01416e965346810f7ab6d409877b9fe477916f140f1c84cb6c3f667d47b
[INFO] running `Command { std: "docker" "start" "-a" "d591e01416e965346810f7ab6d409877b9fe477916f140f1c84cb6c3f667d47b", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `to_list`
[INFO] [stdout]  --> src/lc_mod/lc0002_add_two_numbers.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::util::linked_list::{to_list, ListNode};
[INFO] [stdout]   |                                ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solution`
[INFO] [stdout]  --> src/lc_mod/lc0001_two_sum.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn solution(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: `solution`
[INFO] [stdout]  --> src/lc_mod/lc0002_add_two_numbers.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub fn solution(
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solution`
[INFO] [stdout]  --> src/lc_mod/lc0003_longest_substring_without_repeating_characters.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn solution(s: String) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/util/linked_list.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn new(val: i32) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `to_list`
[INFO] [stdout]   --> src/util/linked_list.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn to_list(vec: Vec<i32>) -> Option<Box<ListNode>> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "d591e01416e965346810f7ab6d409877b9fe477916f140f1c84cb6c3f667d47b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d591e01416e965346810f7ab6d409877b9fe477916f140f1c84cb6c3f667d47b", kill_on_drop: false }`
[INFO] [stdout] d591e01416e965346810f7ab6d409877b9fe477916f140f1c84cb6c3f667d47b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff69a75e104117f70690b34b170fdd96f3f48ec27a882b332f38c170a6b2fbb3
[INFO] running `Command { std: "docker" "start" "-a" "ff69a75e104117f70690b34b170fdd96f3f48ec27a882b332f38c170a6b2fbb3", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/leetcode_rs-1c3dc024403d090a)
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "ff69a75e104117f70690b34b170fdd96f3f48ec27a882b332f38c170a6b2fbb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff69a75e104117f70690b34b170fdd96f3f48ec27a882b332f38c170a6b2fbb3", kill_on_drop: false }`
[INFO] [stdout] ff69a75e104117f70690b34b170fdd96f3f48ec27a882b332f38c170a6b2fbb3