[INFO] cloning repository https://github.com/fen-harel/game_of_life
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fen-harel/game_of_life" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffen-harel%2Fgame_of_life", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffen-harel%2Fgame_of_life'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2d462c87f00cbe388c8254d9ca70a31b36a2900
[INFO] checking fen-harel/game_of_life against f4dd856795debe636f2ba39a900f162f5abeb7e8 for pr-160904
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffen-harel%2Fgame_of_life" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/fen-harel/game_of_life
[INFO] finished tweaking git repo https://github.com/fen-harel/game_of_life
[INFO] tweaked toml for git repo https://github.com/fen-harel/game_of_life written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/fen-harel/game_of_life on toolchain f4dd856795debe636f2ba39a900f162f5abeb7e8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f4dd856795debe636f2ba39a900f162f5abeb7e8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/fen-harel/game_of_life 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" "+f4dd856795debe636f2ba39a900f162f5abeb7e8" "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-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] e2b076282e8cf9ba587dcd1d0b6704cab8fed17fabbe8c8a28aca52423ed10a8
[INFO] running `Command { std: "docker" "start" "e2b076282e8cf9ba587dcd1d0b6704cab8fed17fabbe8c8a28aca52423ed10a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2b076282e8cf9ba587dcd1d0b6704cab8fed17fabbe8c8a28aca52423ed10a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e2b076282e8cf9ba587dcd1d0b6704cab8fed17fabbe8c8a28aca52423ed10a8" "/opt/rustwide/cargo-home/bin/cargo" "+f4dd856795debe636f2ba39a900f162f5abeb7e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2b076282e8cf9ba587dcd1d0b6704cab8fed17fabbe8c8a28aca52423ed10a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "e2b076282e8cf9ba587dcd1d0b6704cab8fed17fabbe8c8a28aca52423ed10a8" "/opt/rustwide/cargo-home/bin/cargo" "+f4dd856795debe636f2ba39a900f162f5abeb7e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking game-of-life v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut len = grid.len();
[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/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut len = grid.len();
[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: unused variable: `life_status`
[INFO] [stdout]   --> src/main.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let life_status = check_life(&focus_cell);
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_life_status`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `life_status`
[INFO] [stdout]   --> src/main.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let life_status = check_life(&focus_cell);
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_life_status`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `focus_cell`
[INFO] [stdout]    --> src/main.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     let focus_cell = grid[y][x];
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_focus_cell`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `focus_cell`
[INFO] [stdout]    --> src/main.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     let focus_cell = grid[y][x];
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_focus_cell`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "e2b076282e8cf9ba587dcd1d0b6704cab8fed17fabbe8c8a28aca52423ed10a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2b076282e8cf9ba587dcd1d0b6704cab8fed17fabbe8c8a28aca52423ed10a8", kill_on_drop: false }`
[INFO] [stdout] e2b076282e8cf9ba587dcd1d0b6704cab8fed17fabbe8c8a28aca52423ed10a8
