[INFO] cloning repository https://github.com/tristan/adventofcode2015
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tristan/adventofcode2015" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftristan%2Fadventofcode2015", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftristan%2Fadventofcode2015'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a5e028d5bb89b0a18024a53bdfacd9adeda09e30
[INFO] checking tristan/adventofcode2015 against try#ddcf048784667508cd676fef4667f88ae15628a3 for pr-148271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftristan%2Fadventofcode2015" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tristan/adventofcode2015
[INFO] finished tweaking git repo https://github.com/tristan/adventofcode2015
[INFO] tweaked toml for git repo https://github.com/tristan/adventofcode2015 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tristan/adventofcode2015 on toolchain ddcf048784667508cd676fef4667f88ae15628a3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tristan/adventofcode2015 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 944744a97c8f7d84ac98fc52003c8e82e6bbc20c5c4573d2585c1b5f1c04a0a6
[INFO] running `Command { std: "docker" "start" "-a" "944744a97c8f7d84ac98fc52003c8e82e6bbc20c5c4573d2585c1b5f1c04a0a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "944744a97c8f7d84ac98fc52003c8e82e6bbc20c5c4573d2585c1b5f1c04a0a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "944744a97c8f7d84ac98fc52003c8e82e6bbc20c5c4573d2585c1b5f1c04a0a6", kill_on_drop: false }`
[INFO] [stdout] 944744a97c8f7d84ac98fc52003c8e82e6bbc20c5c4573d2585c1b5f1c04a0a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d90d1cf4bcb685d20bb2dd65342ff500f001808e502759a3e9acb4c23eeb355
[INFO] running `Command { std: "docker" "start" "-a" "1d90d1cf4bcb685d20bb2dd65342ff500f001808e502759a3e9acb4c23eeb355", kill_on_drop: false }`
[INFO] [stderr]     Checking adventofcode2015 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day_14.rs:40:31
[INFO] [stdout]    |
[INFO] [stdout] 40 |             .for_each(|(deer, mut state)| {
[INFO] [stdout]    |                               ----^^^^^
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day_14.rs:40:31
[INFO] [stdout]    |
[INFO] [stdout] 40 |             .for_each(|(deer, mut state)| {
[INFO] [stdout]    |                               ----^^^^^
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.35s
[INFO] running `Command { std: "docker" "inspect" "1d90d1cf4bcb685d20bb2dd65342ff500f001808e502759a3e9acb4c23eeb355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d90d1cf4bcb685d20bb2dd65342ff500f001808e502759a3e9acb4c23eeb355", kill_on_drop: false }`
[INFO] [stdout] 1d90d1cf4bcb685d20bb2dd65342ff500f001808e502759a3e9acb4c23eeb355