[INFO] cloning repository https://github.com/0bject-0bject/TicTacToe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0bject-0bject/TicTacToe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0bject-0bject%2FTicTacToe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0bject-0bject%2FTicTacToe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b913fb947ab107c2b92fbdfd14fe4f1ab299ff4f
[INFO] checking 0bject-0bject/TicTacToe against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0bject-0bject%2FTicTacToe" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/0bject-0bject/TicTacToe on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/0bject-0bject/TicTacToe
[INFO] finished tweaking git repo https://github.com/0bject-0bject/TicTacToe
[INFO] tweaked toml for git repo https://github.com/0bject-0bject/TicTacToe written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/0bject-0bject/TicTacToe 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enable-ansi-support v0.2.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 258ec20ff597901ec75ae962bd5f5e82aac42f5a09437c26bbd39471d3352b72
[INFO] running `Command { std: "docker" "start" "-a" "258ec20ff597901ec75ae962bd5f5e82aac42f5a09437c26bbd39471d3352b72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "258ec20ff597901ec75ae962bd5f5e82aac42f5a09437c26bbd39471d3352b72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "258ec20ff597901ec75ae962bd5f5e82aac42f5a09437c26bbd39471d3352b72", kill_on_drop: false }`
[INFO] [stdout] 258ec20ff597901ec75ae962bd5f5e82aac42f5a09437c26bbd39471d3352b72
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28f6a775be07ea04201de67c52d359f0caed78ef39d5f915bcfe0a9525595bb2
[INFO] running `Command { std: "docker" "start" "-a" "28f6a775be07ea04201de67c52d359f0caed78ef39d5f915bcfe0a9525595bb2", kill_on_drop: false }`
[INFO] [stderr]     Checking enable-ansi-support v0.2.1
[INFO] [stderr]     Checking tic_tac_toe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "28f6a775be07ea04201de67c52d359f0caed78ef39d5f915bcfe0a9525595bb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28f6a775be07ea04201de67c52d359f0caed78ef39d5f915bcfe0a9525595bb2", kill_on_drop: false }`
[INFO] [stdout] 28f6a775be07ea04201de67c52d359f0caed78ef39d5f915bcfe0a9525595bb2
[INFO] checking 0bject-0bject/TicTacToe against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0bject-0bject%2FTicTacToe" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/0bject-0bject/TicTacToe on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/0bject-0bject/TicTacToe
[INFO] finished tweaking git repo https://github.com/0bject-0bject/TicTacToe
[INFO] tweaked toml for git repo https://github.com/0bject-0bject/TicTacToe written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/0bject-0bject/TicTacToe 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 774e14b07668f0ffda2cf1a82e85fae5703a0c44bb413b0427674624bc3676ba
[INFO] running `Command { std: "docker" "start" "-a" "774e14b07668f0ffda2cf1a82e85fae5703a0c44bb413b0427674624bc3676ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "774e14b07668f0ffda2cf1a82e85fae5703a0c44bb413b0427674624bc3676ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "774e14b07668f0ffda2cf1a82e85fae5703a0c44bb413b0427674624bc3676ba", kill_on_drop: false }`
[INFO] [stdout] 774e14b07668f0ffda2cf1a82e85fae5703a0c44bb413b0427674624bc3676ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 596dffeac94b10178b3175a51bd15e36ae06f6f18136e2de5fc341e237db2d88
[INFO] running `Command { std: "docker" "start" "-a" "596dffeac94b10178b3175a51bd15e36ae06f6f18136e2de5fc341e237db2d88", kill_on_drop: false }`
[INFO] [stderr]     Checking enable-ansi-support v0.2.1
[INFO] [stderr]     Checking tic_tac_toe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `game_thread`
[INFO] [stdout]   --> src/main.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let game_thread = thread::spawn(move || {
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_game_thread`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game_thread`
[INFO] [stdout]   --> src/main.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let game_thread = thread::spawn(move || {
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_game_thread`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "596dffeac94b10178b3175a51bd15e36ae06f6f18136e2de5fc341e237db2d88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "596dffeac94b10178b3175a51bd15e36ae06f6f18136e2de5fc341e237db2d88", kill_on_drop: false }`
[INFO] [stdout] 596dffeac94b10178b3175a51bd15e36ae06f6f18136e2de5fc341e237db2d88