[INFO] cloning repository https://github.com/yogaxpto/tic-tac-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yogaxpto/tic-tac-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyogaxpto%2Ftic-tac-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyogaxpto%2Ftic-tac-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 781f5b0a1ad1a6fbab773d61092e9896c20e8bd1
[INFO] checking yogaxpto/tic-tac-rust against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyogaxpto%2Ftic-tac-rust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yogaxpto/tic-tac-rust on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yogaxpto/tic-tac-rust
[INFO] finished tweaking git repo https://github.com/yogaxpto/tic-tac-rust
[INFO] tweaked toml for git repo https://github.com/yogaxpto/tic-tac-rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/yogaxpto/tic-tac-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 799df16296108ac930534493321fb7212a93e913a3328e71a9705a754566c43b
[INFO] running `Command { std: "docker" "start" "-a" "799df16296108ac930534493321fb7212a93e913a3328e71a9705a754566c43b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "799df16296108ac930534493321fb7212a93e913a3328e71a9705a754566c43b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "799df16296108ac930534493321fb7212a93e913a3328e71a9705a754566c43b", kill_on_drop: false }`
[INFO] [stdout] 799df16296108ac930534493321fb7212a93e913a3328e71a9705a754566c43b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 577878d2c325205d0c048d242bb90a409a4c6e4f90db894c126aa7a0dded4e44
[INFO] running `Command { std: "docker" "start" "-a" "577878d2c325205d0c048d242bb90a409a4c6e4f90db894c126aa7a0dded4e44", kill_on_drop: false }`
[INFO] [stderr]     Checking tic-tac-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/common/coordinate.rs:17:11
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut x: usize = BOARD_SIZE!();
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/common/coordinate.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut y: usize = BOARD_SIZE!();
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/common/node.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 |                 x if child.is_full() => (),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/common/node.rs:123:5
[INFO] [stdout]     |
[INFO] [stdout] 123 |                 x if child.is_full() => (),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max`
[INFO] [stdout]    --> src/common/node.rs:133:19
[INFO] [stdout]     |
[INFO] [stdout] 133 |     fn max_ab(&self, max: i8, min: i8) -> Node {
[INFO] [stdout]     |                      ^^^ help: if this is intentional, prefix it with an underscore: `_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `min`
[INFO] [stdout]    --> src/common/node.rs:133:28
[INFO] [stdout]     |
[INFO] [stdout] 133 |     fn max_ab(&self, max: i8, min: i8) -> Node {
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_min`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/common/coordinate.rs:17:11
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut x: usize = BOARD_SIZE!();
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/common/coordinate.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let mut y: usize = BOARD_SIZE!();
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/common/node.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 |                 x if child.is_full() => (),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/common/node.rs:123:5
[INFO] [stdout]     |
[INFO] [stdout] 123 |                 x if child.is_full() => (),
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `max`
[INFO] [stdout]    --> src/common/node.rs:133:19
[INFO] [stdout]     |
[INFO] [stdout] 133 |     fn max_ab(&self, max: i8, min: i8) -> Node {
[INFO] [stdout]     |                      ^^^ help: if this is intentional, prefix it with an underscore: `_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `min`
[INFO] [stdout]    --> src/common/node.rs:133:28
[INFO] [stdout]     |
[INFO] [stdout] 133 |     fn max_ab(&self, max: i8, min: i8) -> Node {
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_min`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `max_ab`
[INFO] [stdout]    --> src/common/node.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 133 |     fn max_ab(&self, max: i8, min: i8) -> Node {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 19 |     io.lock().read_line(&mut stdin);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `max_ab`
[INFO] [stdout]    --> src/common/node.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 133 |     fn max_ab(&self, max: i8, min: i8) -> Node {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:19:2
[INFO] [stdout]    |
[INFO] [stdout] 19 |     io.lock().read_line(&mut stdin);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "577878d2c325205d0c048d242bb90a409a4c6e4f90db894c126aa7a0dded4e44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "577878d2c325205d0c048d242bb90a409a4c6e4f90db894c126aa7a0dded4e44", kill_on_drop: false }`
[INFO] [stdout] 577878d2c325205d0c048d242bb90a409a4c6e4f90db894c126aa7a0dded4e44