[INFO] cloning repository https://github.com/GallaisPoutine/GameOfLife
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GallaisPoutine/GameOfLife" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGallaisPoutine%2FGameOfLife", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGallaisPoutine%2FGameOfLife'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34ae58dfbac95857a768da0a879bae58ae451408
[INFO] building GallaisPoutine/GameOfLife against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGallaisPoutine%2FGameOfLife" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GallaisPoutine/GameOfLife on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/GallaisPoutine/GameOfLife
[INFO] finished tweaking git repo https://github.com/GallaisPoutine/GameOfLife
[INFO] tweaked toml for git repo https://github.com/GallaisPoutine/GameOfLife written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/GallaisPoutine/GameOfLife already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0bbce29eb2c2d82d8ac63fb54fa088ee23dc5ffe74e896974e86a892c43fb94b
[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" "0bbce29eb2c2d82d8ac63fb54fa088ee23dc5ffe74e896974e86a892c43fb94b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bbce29eb2c2d82d8ac63fb54fa088ee23dc5ffe74e896974e86a892c43fb94b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bbce29eb2c2d82d8ac63fb54fa088ee23dc5ffe74e896974e86a892c43fb94b", kill_on_drop: false }`
[INFO] [stdout] 0bbce29eb2c2d82d8ac63fb54fa088ee23dc5ffe74e896974e86a892c43fb94b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 810054ac163866a490c8e198c17408bbe9c99320adaa617e80990e1bc861565c
[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" "810054ac163866a490c8e198c17408bbe9c99320adaa617e80990e1bc861565c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling termion v1.5.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling game_of_life v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     for i in 0..height as i16 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> src/main.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |         for j in 0..width as i16 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `grid`
[INFO] [stdout]   --> src/main.rs:54:21
[INFO] [stdout]    |
[INFO] [stdout] 54 | fn check_neighbours(grid : &Vec<Vec<cell::Cell>>) -> u16 {
[INFO] [stdout]    |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_grid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `grid`
[INFO] [stdout]   --> src/main.rs:69:20
[INFO] [stdout]    |
[INFO] [stdout] 69 | fn set_future_grid(grid : &Vec<Vec<cell::Cell>>) {
[INFO] [stdout]    |                    ^^^^ help: if this is intentional, prefix it with an underscore: `_grid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `*cell.1` as mutable, as it is behind a `&` reference
[INFO] [stdout]   --> src/main.rs:40:25
[INFO] [stdout]    |
[INFO] [stdout] 40 |                         cell.1.process(check_neighbours(&grid));
[INFO] [stdout]    |                         ^^^^^^ cannot borrow as mutable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let mut neighbours = 0;
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `game_of_life`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "810054ac163866a490c8e198c17408bbe9c99320adaa617e80990e1bc861565c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "810054ac163866a490c8e198c17408bbe9c99320adaa617e80990e1bc861565c", kill_on_drop: false }`
[INFO] [stdout] 810054ac163866a490c8e198c17408bbe9c99320adaa617e80990e1bc861565c
