[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] building f-prime/GameOfLife-Rust against master#f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9 for pr-137044-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ff-prime%2FGameOfLife-Rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/f-prime/GameOfLife-Rust on toolchain f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6-tc1/source/Cargo.toml
[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" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand v0.8.4
[INFO] [stderr]   Downloaded rand_hc v0.3.1
[INFO] [stderr]   Downloaded wasi v0.10.2+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded getrandom v0.2.3
[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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 771763fd3e686620c06312b082e76ac24d11787543026726bb607b0977ea8bfb
[INFO] running `Command { std: "docker" "start" "-a" "771763fd3e686620c06312b082e76ac24d11787543026726bb607b0977ea8bfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "771763fd3e686620c06312b082e76ac24d11787543026726bb607b0977ea8bfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "771763fd3e686620c06312b082e76ac24d11787543026726bb607b0977ea8bfb", kill_on_drop: false }`
[INFO] [stdout] 771763fd3e686620c06312b082e76ac24d11787543026726bb607b0977ea8bfb
[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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbedf0721d11555957f7ab5324a5da364a0274092c5faabb06d1fa33091b0e29
[INFO] running `Command { std: "docker" "start" "-a" "fbedf0721d11555957f7ab5324a5da364a0274092c5faabb06d1fa33091b0e29", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.98s
[INFO] running `Command { std: "docker" "inspect" "fbedf0721d11555957f7ab5324a5da364a0274092c5faabb06d1fa33091b0e29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbedf0721d11555957f7ab5324a5da364a0274092c5faabb06d1fa33091b0e29", kill_on_drop: false }`
[INFO] [stdout] fbedf0721d11555957f7ab5324a5da364a0274092c5faabb06d1fa33091b0e29
[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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f77247ac59b29ce927f4d2cd1c26a4b2d1d358c9" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 291d37e420488ec1278f615b0064d5986a5ab1ca9ed59f3caa21ed1fe94197b0
[INFO] running `Command { std: "docker" "start" "-a" "291d37e420488ec1278f615b0064d5986a5ab1ca9ed59f3caa21ed1fe94197b0", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "291d37e420488ec1278f615b0064d5986a5ab1ca9ed59f3caa21ed1fe94197b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "291d37e420488ec1278f615b0064d5986a5ab1ca9ed59f3caa21ed1fe94197b0", kill_on_drop: false }`
[INFO] [stdout] 291d37e420488ec1278f615b0064d5986a5ab1ca9ed59f3caa21ed1fe94197b0