[INFO] cloning repository https://github.com/HarukiUchito/rust_cp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HarukiUchito/rust_cp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHarukiUchito%2Frust_cp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHarukiUchito%2Frust_cp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f1ecc8bf5bfd6722ec78a62b804a06f55300e09f
[INFO] checking HarukiUchito/rust_cp against master#a836d9b6413d9d593be6c09463ff8c4c70e56599 for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHarukiUchito%2Frust_cp" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HarukiUchito/rust_cp on toolchain a836d9b6413d9d593be6c09463ff8c4c70e56599
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/HarukiUchito/rust_cp
[INFO] finished tweaking git repo https://github.com/HarukiUchito/rust_cp
[INFO] tweaked toml for git repo https://github.com/HarukiUchito/rust_cp written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/HarukiUchito/rust_cp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cac7638b3692ba0e008c36cf18a3c319c10355a79fd0c1d25e66ddc59cdd97df
[INFO] running `Command { std: "docker" "start" "-a" "cac7638b3692ba0e008c36cf18a3c319c10355a79fd0c1d25e66ddc59cdd97df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cac7638b3692ba0e008c36cf18a3c319c10355a79fd0c1d25e66ddc59cdd97df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cac7638b3692ba0e008c36cf18a3c319c10355a79fd0c1d25e66ddc59cdd97df", kill_on_drop: false }`
[INFO] [stdout] cac7638b3692ba0e008c36cf18a3c319c10355a79fd0c1d25e66ddc59cdd97df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 16fc789fa17083d1b4404dc51e3c2b4b519f5788b8fc81c5a770e1cc18570ed2
[INFO] running `Command { std: "docker" "start" "-a" "16fc789fa17083d1b4404dc51e3c2b4b519f5788b8fc81c5a770e1cc18570ed2", kill_on_drop: false }`
[INFO] [stderr]     Checking competitive_programming v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/main.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let mut pr = ContestPrinter::new();
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/bin/shorten_diameter.rs:109:31
[INFO] [stdout]     |
[INFO] [stdout] 109 |         for i in 0..ab.len() {; // center edge
[INFO] [stdout]     |                               ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/bin/shorten_diameter.rs:109:31
[INFO] [stdout]     |
[INFO] [stdout] 109 |         for i in 0..ab.len() {; // center edge
[INFO] [stdout]     |                               ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/main.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let mut pr = ContestPrinter::new();
[INFO] [stdout]    |         ----^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.55s
[INFO] running `Command { std: "docker" "inspect" "16fc789fa17083d1b4404dc51e3c2b4b519f5788b8fc81c5a770e1cc18570ed2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16fc789fa17083d1b4404dc51e3c2b4b519f5788b8fc81c5a770e1cc18570ed2", kill_on_drop: false }`
[INFO] [stdout] 16fc789fa17083d1b4404dc51e3c2b4b519f5788b8fc81c5a770e1cc18570ed2