[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 against try#1f5783cbeb5da8b38566d718631d016891e9c912 for pr-142704
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftfia%2Fconnect4-sdk-rs" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tfia/connect4-sdk-rs on toolchain 1f5783cbeb5da8b38566d718631d016891e9c912
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f5783cbeb5da8b38566d718631d016891e9c912" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-2-tc2/source/Cargo.toml
[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" "+1f5783cbeb5da8b38566d718631d016891e9c912" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+1f5783cbeb5da8b38566d718631d016891e9c912" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19a24ef651175e807854ec014612b43fd25bd7d287a7323b89c3d2ca15c50ac1
[INFO] running `Command { std: "docker" "start" "-a" "19a24ef651175e807854ec014612b43fd25bd7d287a7323b89c3d2ca15c50ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19a24ef651175e807854ec014612b43fd25bd7d287a7323b89c3d2ca15c50ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19a24ef651175e807854ec014612b43fd25bd7d287a7323b89c3d2ca15c50ac1", kill_on_drop: false }`
[INFO] [stdout] 19a24ef651175e807854ec014612b43fd25bd7d287a7323b89c3d2ca15c50ac1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+1f5783cbeb5da8b38566d718631d016891e9c912" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39b1b2e3df90f3c3f5f35e26801f3201e8c43a489449ff081ca867ae0a8473ea
[INFO] running `Command { std: "docker" "start" "-a" "39b1b2e3df90f3c3f5f35e26801f3201e8c43a489449ff081ca867ae0a8473ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]     Checking cfg-if v1.0.1
[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)]` 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)]` 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)]` 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)]` 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 2.93s
[INFO] running `Command { std: "docker" "inspect" "39b1b2e3df90f3c3f5f35e26801f3201e8c43a489449ff081ca867ae0a8473ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39b1b2e3df90f3c3f5f35e26801f3201e8c43a489449ff081ca867ae0a8473ea", kill_on_drop: false }`
[INFO] [stdout] 39b1b2e3df90f3c3f5f35e26801f3201e8c43a489449ff081ca867ae0a8473ea