[INFO] cloning repository https://github.com/TheSwiginator/rust-minesweeper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TheSwiginator/rust-minesweeper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheSwiginator%2Frust-minesweeper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheSwiginator%2Frust-minesweeper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d3f5f992f3c39857e04897abd37f7700139ff628
[INFO] checking TheSwiginator/rust-minesweeper against master#23718020b12d7e5a54f82a19910e8356ee719667 for pr-146013-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheSwiginator%2Frust-minesweeper" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/TheSwiginator/rust-minesweeper
[INFO] finished tweaking git repo https://github.com/TheSwiginator/rust-minesweeper
[INFO] tweaked toml for git repo https://github.com/TheSwiginator/rust-minesweeper written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TheSwiginator/rust-minesweeper on toolchain 23718020b12d7e5a54f82a19910e8356ee719667
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23718020b12d7e5a54f82a19910e8356ee719667" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TheSwiginator/rust-minesweeper 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" "+23718020b12d7e5a54f82a19910e8356ee719667" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded getrandom v0.2.8
[INFO] [stderr]   Downloaded libc v0.2.138
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+23718020b12d7e5a54f82a19910e8356ee719667" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f8ffb1cbf61357265351042490519269744f5a2f4a2643cfb724f0814376fd0
[INFO] running `Command { std: "docker" "start" "-a" "8f8ffb1cbf61357265351042490519269744f5a2f4a2643cfb724f0814376fd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f8ffb1cbf61357265351042490519269744f5a2f4a2643cfb724f0814376fd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f8ffb1cbf61357265351042490519269744f5a2f4a2643cfb724f0814376fd0", kill_on_drop: false }`
[INFO] [stdout] 8f8ffb1cbf61357265351042490519269744f5a2f4a2643cfb724f0814376fd0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+23718020b12d7e5a54f82a19910e8356ee719667" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b0b520d4ab490be666f4c3e442dde6b23fe9f121d55b277a62581c324d81903
[INFO] running `Command { std: "docker" "start" "-a" "0b0b520d4ab490be666f4c3e442dde6b23fe9f121d55b277a62581c324d81903", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking Minesweeper2022 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/main.rs:86:80
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut _board: Vec<Vec<GameObject>> = (0.._h).map(|y| (0.._w).map(|x| (GameObject::new(x, y, 0))).collect()).collect();
[INFO] [stdout]    |                                                                                ^                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 86 -         let mut _board: Vec<Vec<GameObject>> = (0.._h).map(|y| (0.._w).map(|x| (GameObject::new(x, y, 0))).collect()).collect();
[INFO] [stdout] 86 +         let mut _board: Vec<Vec<GameObject>> = (0.._h).map(|y| (0.._w).map(|x| GameObject::new(x, y, 0)).collect()).collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/main.rs:86:80
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut _board: Vec<Vec<GameObject>> = (0.._h).map(|y| (0.._w).map(|x| (GameObject::new(x, y, 0))).collect()).collect();
[INFO] [stdout]    |                                                                                ^                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 86 -         let mut _board: Vec<Vec<GameObject>> = (0.._h).map(|y| (0.._w).map(|x| (GameObject::new(x, y, 0))).collect()).collect();
[INFO] [stdout] 86 +         let mut _board: Vec<Vec<GameObject>> = (0.._h).map(|y| (0.._w).map(|x| GameObject::new(x, y, 0)).collect()).collect();
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `row` is never read
[INFO] [stdout]    --> src/main.rs:223:17
[INFO] [stdout]     |
[INFO] [stdout] 223 |         let mut row: i32 = 0;
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `col` is never read
[INFO] [stdout]    --> src/main.rs:224:17
[INFO] [stdout]     |
[INFO] [stdout] 224 |         let mut col: i32 = 0;
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `row` is never read
[INFO] [stdout]    --> src/main.rs:223:17
[INFO] [stdout]     |
[INFO] [stdout] 223 |         let mut row: i32 = 0;
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `col` is never read
[INFO] [stdout]    --> src/main.rs:224:17
[INFO] [stdout]     |
[INFO] [stdout] 224 |         let mut col: i32 = 0;
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.92s
[INFO] running `Command { std: "docker" "inspect" "0b0b520d4ab490be666f4c3e442dde6b23fe9f121d55b277a62581c324d81903", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b0b520d4ab490be666f4c3e442dde6b23fe9f121d55b277a62581c324d81903", kill_on_drop: false }`
[INFO] [stdout] 0b0b520d4ab490be666f4c3e442dde6b23fe9f121d55b277a62581c324d81903