[INFO] cloning repository https://github.com/FlrnFrmm/hashcode-2020
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FlrnFrmm/hashcode-2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFlrnFrmm%2Fhashcode-2020"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFlrnFrmm%2Fhashcode-2020'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7604254ba30539c4e01a0af762c5f97706a32b44
[INFO] checking FlrnFrmm/hashcode-2020 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFlrnFrmm%2Fhashcode-2020" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FlrnFrmm/hashcode-2020 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/FlrnFrmm/hashcode-2020
[INFO] finished tweaking git repo https://github.com/FlrnFrmm/hashcode-2020
[INFO] tweaked toml for git repo https://github.com/FlrnFrmm/hashcode-2020 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/FlrnFrmm/hashcode-2020 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 01753e38616915b0d541c2e9404d5dd6b5a246e285ad6bf20c8b932f015edacf
[INFO] running `"docker" "start" "-a" "01753e38616915b0d541c2e9404d5dd6b5a246e285ad6bf20c8b932f015edacf"`
[INFO] [stderr]     Checking hashcode-20202 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `generate_output`
[INFO] [stderr]   --> src/parser.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub fn generate_output(book_scores: Vec<(i32, Vec<i32>)>) -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generate_output`
[INFO] [stderr]   --> src/parser.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub fn generate_output(book_scores: Vec<(i32, Vec<i32>)>) -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `"docker" "inspect" "01753e38616915b0d541c2e9404d5dd6b5a246e285ad6bf20c8b932f015edacf"`
[INFO] running `"docker" "rm" "-f" "01753e38616915b0d541c2e9404d5dd6b5a246e285ad6bf20c8b932f015edacf"`
[INFO] [stdout] 01753e38616915b0d541c2e9404d5dd6b5a246e285ad6bf20c8b932f015edacf