[INFO] cloning repository https://github.com/Bestra/advent-2018-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Bestra/advent-2018-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBestra%2Fadvent-2018-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBestra%2Fadvent-2018-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4c8897c54b4e52c5153a7f2c99a502fadef02306
[INFO] checking Bestra/advent-2018-rs against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBestra%2Fadvent-2018-rs" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Bestra/advent-2018-rs on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Bestra/advent-2018-rs
[INFO] finished tweaking git repo https://github.com/Bestra/advent-2018-rs
[INFO] tweaked toml for git repo https://github.com/Bestra/advent-2018-rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Bestra/advent-2018-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6908241a7a7f0a98076e1f11bbb9f8907f8b7f92b2b2ecbc7bd9fcc473346efd
[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" "6908241a7a7f0a98076e1f11bbb9f8907f8b7f92b2b2ecbc7bd9fcc473346efd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6908241a7a7f0a98076e1f11bbb9f8907f8b7f92b2b2ecbc7bd9fcc473346efd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6908241a7a7f0a98076e1f11bbb9f8907f8b7f92b2b2ecbc7bd9fcc473346efd", kill_on_drop: false }`
[INFO] [stdout] 6908241a7a7f0a98076e1f11bbb9f8907f8b7f92b2b2ecbc7bd9fcc473346efd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8fbefd04b8044d692c40e445f26eaa8db97fca5fee960e85483098c27a75c8e
[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" "a8fbefd04b8044d692c40e445f26eaa8db97fca5fee960e85483098c27a75c8e", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.1.41
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking serde v1.0.26
[INFO] [stderr]     Checking stable_deref_trait v1.0.0
[INFO] [stderr]     Checking unicode-segmentation v1.2.0
[INFO] [stderr]     Checking maplit v1.0.0
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking rprompt v1.0.3
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking rand v0.3.19
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking num-complex v0.1.41
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]    Compiling ncurses v5.88.0
[INFO] [stderr]     Checking num-bigint v0.1.41
[INFO] [stderr]     Checking num-rational v0.1.40
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]     Checking toml v0.4.5
[INFO] [stderr]     Checking cursive v0.7.5
[INFO] [stderr]     Checking advent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `split`
[INFO] [stdout]   --> src/day_4.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn split(s: &str) -> Vec<String> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.70s
[INFO] running `Command { std: "docker" "inspect" "a8fbefd04b8044d692c40e445f26eaa8db97fca5fee960e85483098c27a75c8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8fbefd04b8044d692c40e445f26eaa8db97fca5fee960e85483098c27a75c8e", kill_on_drop: false }`
[INFO] [stdout] a8fbefd04b8044d692c40e445f26eaa8db97fca5fee960e85483098c27a75c8e