[INFO] cloning repository https://github.com/ralexstokes/advent-of-code-2018
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ralexstokes/advent-of-code-2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fralexstokes%2Fadvent-of-code-2018", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fralexstokes%2Fadvent-of-code-2018'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 848f96d222733573f97e7bdeb9cea7036f2c3e20
[INFO] checking ralexstokes/advent-of-code-2018 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fralexstokes%2Fadvent-of-code-2018" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ralexstokes/advent-of-code-2018 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ralexstokes/advent-of-code-2018
[INFO] finished tweaking git repo https://github.com/ralexstokes/advent-of-code-2018
[INFO] tweaked toml for git repo https://github.com/ralexstokes/advent-of-code-2018 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/ralexstokes/advent-of-code-2018 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be5f992b2fae5626189beb042fe146d7b768e39d62187756553f1f803d6ca3e5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "be5f992b2fae5626189beb042fe146d7b768e39d62187756553f1f803d6ca3e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be5f992b2fae5626189beb042fe146d7b768e39d62187756553f1f803d6ca3e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be5f992b2fae5626189beb042fe146d7b768e39d62187756553f1f803d6ca3e5", kill_on_drop: false }`
[INFO] [stdout] be5f992b2fae5626189beb042fe146d7b768e39d62187756553f1f803d6ca3e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 679c86761408ad70c597739176fa389aef178b492bdc3f3f3042d319717aa58f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "679c86761408ad70c597739176fa389aef178b492bdc3f3f3042d319717aa58f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking advent_of_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `sleeps`
[INFO] [stdout]    --> src/day_4.rs:146:29
[INFO] [stdout]     |
[INFO] [stdout] 146 |                         let sleeps = current_guard.minutes_asleep.len();
[INFO] [stdout]     |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sleeps`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sleeps`
[INFO] [stdout]    --> src/day_4.rs:174:17
[INFO] [stdout]     |
[INFO] [stdout] 174 |             let sleeps = current_guard.minutes_asleep.len();
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_sleeps`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `EventRE` should have an upper case name
[INFO] [stdout]   --> src/day_4.rs:99:28
[INFO] [stdout]    |
[INFO] [stdout] 99 |                 static ref EventRE: Regex = Regex::new(r"^Guard #(\d+) begins shift$").unwrap();
[INFO] [stdout]    |                            ^^^^^^^ help: convert the identifier to upper case: `EVENT_RE`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.75s
[INFO] running `Command { std: "docker" "inspect" "679c86761408ad70c597739176fa389aef178b492bdc3f3f3042d319717aa58f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "679c86761408ad70c597739176fa389aef178b492bdc3f3f3042d319717aa58f", kill_on_drop: false }`
[INFO] [stdout] 679c86761408ad70c597739176fa389aef178b492bdc3f3f3042d319717aa58f