[INFO] cloning repository https://github.com/tbauer428/rust-tac-toe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tbauer428/rust-tac-toe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftbauer428%2Frust-tac-toe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftbauer428%2Frust-tac-toe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f2c8ddcd04fca24eb535b82d67963707bcc637ab
[INFO] checking tbauer428/rust-tac-toe against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftbauer428%2Frust-tac-toe" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tbauer428/rust-tac-toe on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tbauer428/rust-tac-toe
[INFO] finished tweaking git repo https://github.com/tbauer428/rust-tac-toe
[INFO] tweaked toml for git repo https://github.com/tbauer428/rust-tac-toe written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/tbauer428/rust-tac-toe already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dcab97c2cfa10232759f025b433401c5b2530973118acde6d0ea5696b3c6c48e
[INFO] running `Command { std: "docker" "start" "-a" "dcab97c2cfa10232759f025b433401c5b2530973118acde6d0ea5696b3c6c48e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcab97c2cfa10232759f025b433401c5b2530973118acde6d0ea5696b3c6c48e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcab97c2cfa10232759f025b433401c5b2530973118acde6d0ea5696b3c6c48e", kill_on_drop: false }`
[INFO] [stdout] dcab97c2cfa10232759f025b433401c5b2530973118acde6d0ea5696b3c6c48e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8db6934f0ad83b302b31d9c8a940a047abd53e6c3a0a024c00ce842f07c43d12
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8db6934f0ad83b302b31d9c8a940a047abd53e6c3a0a024c00ce842f07c43d12", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking tic_tac_toe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Bot`
[INFO] [stdout]  --> src/twentyone.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Bot,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Action`
[INFO] [stdout]  --> src/twentyone.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Action {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `current_turn`
[INFO] [stdout]   --> src/twentyone.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     current_turn: Turn,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Bot`
[INFO] [stdout]  --> src/twentyone.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Bot,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Action`
[INFO] [stdout]  --> src/twentyone.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | enum Action {
[INFO] [stdout]   |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `current_turn`
[INFO] [stdout]   --> src/twentyone.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     current_turn: Turn,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.74s
[INFO] running `Command { std: "docker" "inspect" "8db6934f0ad83b302b31d9c8a940a047abd53e6c3a0a024c00ce842f07c43d12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8db6934f0ad83b302b31d9c8a940a047abd53e6c3a0a024c00ce842f07c43d12", kill_on_drop: false }`
[INFO] [stdout] 8db6934f0ad83b302b31d9c8a940a047abd53e6c3a0a024c00ce842f07c43d12