[INFO] cloning repository https://github.com/f-prime/GameOfLife-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/f-prime/GameOfLife-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ff-prime%2FGameOfLife-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ff-prime%2FGameOfLife-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8cd0052fb8f479ef38614f3082d720f2bafc44a2
[INFO] checking f-prime/GameOfLife-Rust against master#36b21637e93b038453924d3c66821089e71d8baa for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ff-prime%2FGameOfLife-Rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/f-prime/GameOfLife-Rust
[INFO] finished tweaking git repo https://github.com/f-prime/GameOfLife-Rust
[INFO] tweaked toml for git repo https://github.com/f-prime/GameOfLife-Rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/f-prime/GameOfLife-Rust on toolchain 36b21637e93b038453924d3c66821089e71d8baa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/f-prime/GameOfLife-Rust 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" "+36b21637e93b038453924d3c66821089e71d8baa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2c3c56d5ba2adc85389566f8cb71bf357b8eb8c483c33a85e0a7e8a01a15a05c
[INFO] running `Command { std: "docker" "start" "-a" "2c3c56d5ba2adc85389566f8cb71bf357b8eb8c483c33a85e0a7e8a01a15a05c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c3c56d5ba2adc85389566f8cb71bf357b8eb8c483c33a85e0a7e8a01a15a05c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c3c56d5ba2adc85389566f8cb71bf357b8eb8c483c33a85e0a7e8a01a15a05c", kill_on_drop: false }`
[INFO] [stdout] 2c3c56d5ba2adc85389566f8cb71bf357b8eb8c483c33a85e0a7e8a01a15a05c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3ab44d5b8690b9a4ad5bea075d5ca7961850c732b5104745377556e7a82ad11
[INFO] running `Command { std: "docker" "start" "-a" "f3ab44d5b8690b9a4ad5bea075d5ca7961850c732b5104745377556e7a82ad11", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking game_of_life_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let mut cell = &mut grid[i];
[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] warning: field `y` is never read
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | struct Cell {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 9  |     x: i32,
[INFO] [stdout] 10 |     y: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct AdjacentCells {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 16 |     left: bool,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     right: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 18 |     top: bool,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 19 |     top_left: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 20 |     top_right: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 21 |     bottom: bool,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 22 |     bottom_left: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 23 |     bottom_right: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let mut cell = &mut grid[i];
[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] warning: field `y` is never read
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | struct Cell {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 9  |     x: i32,
[INFO] [stdout] 10 |     y: i32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct AdjacentCells {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 16 |     left: bool,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     right: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 18 |     top: bool,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 19 |     top_left: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 20 |     top_right: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 21 |     bottom: bool,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 22 |     bottom_left: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 23 |     bottom_right: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.79s
[INFO] running `Command { std: "docker" "inspect" "f3ab44d5b8690b9a4ad5bea075d5ca7961850c732b5104745377556e7a82ad11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3ab44d5b8690b9a4ad5bea075d5ca7961850c732b5104745377556e7a82ad11", kill_on_drop: false }`
[INFO] [stdout] f3ab44d5b8690b9a4ad5bea075d5ca7961850c732b5104745377556e7a82ad11
