[INFO] cloning repository https://github.com/tfia/connect4-sdk-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tfia/connect4-sdk-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftfia%2Fconnect4-sdk-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftfia%2Fconnect4-sdk-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f19d1651c8ca0ecfa1c5d38bceed09ca1d497a6a
[INFO] checking tfia/connect4-sdk-rs/f19d1651c8ca0ecfa1c5d38bceed09ca1d497a6a against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftfia%2Fconnect4-sdk-rs" "/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/tfia/connect4-sdk-rs
[INFO] finished tweaking git repo https://github.com/tfia/connect4-sdk-rs
[INFO] tweaked toml for git repo https://github.com/tfia/connect4-sdk-rs written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tfia/connect4-sdk-rs on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tfia/connect4-sdk-rs 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 301d927458b86047b13f60d742f01776d727227283bedc024c2e5d088814006f
[INFO] running `Command { std: "docker" "start" "-a" "301d927458b86047b13f60d742f01776d727227283bedc024c2e5d088814006f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "301d927458b86047b13f60d742f01776d727227283bedc024c2e5d088814006f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "301d927458b86047b13f60d742f01776d727227283bedc024c2e5d088814006f", kill_on_drop: false }`
[INFO] [stdout] 301d927458b86047b13f60d742f01776d727227283bedc024c2e5d088814006f
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2ed249eb92b61d7b5891458755fb95fa3857d3d733c17ae83b7f92fcf354e0a
[INFO] running `Command { std: "docker" "start" "-a" "b2ed249eb92b61d7b5891458755fb95fa3857d3d733c17ae83b7f92fcf354e0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking connect4-sdk-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]  --> src/strategy.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     row: usize,
[INFO] [stdout]   |     ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]  --> src/strategy.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     board: &Vec<Vec<i32>>,
[INFO] [stdout]   |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_x`
[INFO] [stdout]  --> src/strategy.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     last_x: i32,
[INFO] [stdout]   |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_y`
[INFO] [stdout]  --> src/strategy.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     last_y: i32,
[INFO] [stdout]   |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nox`
[INFO] [stdout]  --> src/strategy.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     nox: usize,
[INFO] [stdout]   |     ^^^ help: if this is intentional, prefix it with an underscore: `_nox`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `noy`
[INFO] [stdout]  --> src/strategy.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     noy: usize,
[INFO] [stdout]   |     ^^^ help: if this is intentional, prefix it with an underscore: `_noy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]  --> src/strategy.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     row: usize,
[INFO] [stdout]   |     ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]  --> src/strategy.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     board: &Vec<Vec<i32>>,
[INFO] [stdout]   |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_x`
[INFO] [stdout]  --> src/strategy.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     last_x: i32,
[INFO] [stdout]   |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_y`
[INFO] [stdout]  --> src/strategy.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     last_y: i32,
[INFO] [stdout]   |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nox`
[INFO] [stdout]  --> src/strategy.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     nox: usize,
[INFO] [stdout]   |     ^^^ help: if this is intentional, prefix it with an underscore: `_nox`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `noy`
[INFO] [stdout]  --> src/strategy.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     noy: usize,
[INFO] [stdout]   |     ^^^ help: if this is intentional, prefix it with an underscore: `_noy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]  --> src/strategy.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     row: usize,
[INFO] [stdout]   |     ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]  --> src/strategy.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     board: &Vec<Vec<i32>>,
[INFO] [stdout]   |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_x`
[INFO] [stdout]  --> src/strategy.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     last_x: i32,
[INFO] [stdout]   |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_y`
[INFO] [stdout]  --> src/strategy.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     last_y: i32,
[INFO] [stdout]   |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nox`
[INFO] [stdout]  --> src/strategy.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     nox: usize,
[INFO] [stdout]   |     ^^^ help: if this is intentional, prefix it with an underscore: `_nox`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `noy`
[INFO] [stdout]  --> src/strategy.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     noy: usize,
[INFO] [stdout]   |     ^^^ help: if this is intentional, prefix it with an underscore: `_noy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `row`
[INFO] [stdout]  --> src/strategy.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     row: usize,
[INFO] [stdout]   |     ^^^ help: if this is intentional, prefix it with an underscore: `_row`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]  --> src/strategy.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     board: &Vec<Vec<i32>>,
[INFO] [stdout]   |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_x`
[INFO] [stdout]  --> src/strategy.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     last_x: i32,
[INFO] [stdout]   |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `last_y`
[INFO] [stdout]  --> src/strategy.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     last_y: i32,
[INFO] [stdout]   |     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_last_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nox`
[INFO] [stdout]  --> src/strategy.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     nox: usize,
[INFO] [stdout]   |     ^^^ help: if this is intentional, prefix it with an underscore: `_nox`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `noy`
[INFO] [stdout]  --> src/strategy.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     noy: usize,
[INFO] [stdout]   |     ^^^ help: if this is intentional, prefix it with an underscore: `_noy`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.76s
[INFO] running `Command { std: "docker" "inspect" "b2ed249eb92b61d7b5891458755fb95fa3857d3d733c17ae83b7f92fcf354e0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2ed249eb92b61d7b5891458755fb95fa3857d3d733c17ae83b7f92fcf354e0a", kill_on_drop: false }`
[INFO] [stdout] b2ed249eb92b61d7b5891458755fb95fa3857d3d733c17ae83b7f92fcf354e0a