[INFO] cloning repository https://github.com/aleph-oh/aoc2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aleph-oh/aoc2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faleph-oh%2Faoc2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faleph-oh%2Faoc2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e196dcf33c1ece02112a12eb85ca96b83baeee79
[INFO] testing aleph-oh/aoc2021 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faleph-oh%2Faoc2021" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/aleph-oh/aoc2021
[INFO] finished tweaking git repo https://github.com/aleph-oh/aoc2021
[INFO] tweaked toml for git repo https://github.com/aleph-oh/aoc2021 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/aleph-oh/aoc2021 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/aleph-oh/aoc2021 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" "+562dee4820c458d823175268e41601d4c060588a" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9c257794a7e50a1b43090804fd34ca1e01bf9671d4fbd4de746739748a554ee7
[INFO] running `Command { std: "docker" "start" "-a" "9c257794a7e50a1b43090804fd34ca1e01bf9671d4fbd4de746739748a554ee7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c257794a7e50a1b43090804fd34ca1e01bf9671d4fbd4de746739748a554ee7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c257794a7e50a1b43090804fd34ca1e01bf9671d4fbd4de746739748a554ee7", kill_on_drop: false }`
[INFO] [stdout] 9c257794a7e50a1b43090804fd34ca1e01bf9671d4fbd4de746739748a554ee7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fdd2b45478a66b4ae74e7a7d0e5de76999092cd85e7f156f0f8fa68901f9ab6b
[INFO] running `Command { std: "docker" "start" "-a" "fdd2b45478a66b4ae74e7a7d0e5de76999092cd85e7f156f0f8fa68901f9ab6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling aoc2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `array_zip`
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(array_zip)]
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: there is a feature with a similar name: `array_map`
[INFO] [stdout]   |
[INFO] [stdout] 1 - #![feature(array_zip)]
[INFO] [stdout] 1 + #![feature(array_map)]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day11.rs:50:40
[INFO] [stdout]    |
[INFO] [stdout] 50 |         self.grid.iter_mut().for_each(|mut o| o.energy += 1);
[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/day11.rs:76:58
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let flashed = self.grid.iter_mut().fold(0, |acc, mut o| {
[INFO] [stdout]    |                                                          ----^
[INFO] [stdout]    |                                                          |
[INFO] [stdout]    |                                                          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day11.rs:66:21
[INFO] [stdout]    |
[INFO] [stdout] 66 |                 let mut other_o = &mut self.grid[j];
[INFO] [stdout]    |                     ----^^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc2021` (bin "aoc2021") due to 1 previous error; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "fdd2b45478a66b4ae74e7a7d0e5de76999092cd85e7f156f0f8fa68901f9ab6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdd2b45478a66b4ae74e7a7d0e5de76999092cd85e7f156f0f8fa68901f9ab6b", kill_on_drop: false }`
[INFO] [stdout] fdd2b45478a66b4ae74e7a7d0e5de76999092cd85e7f156f0f8fa68901f9ab6b