[INFO] cloning repository https://github.com/omgbrbttyl/RustBox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/omgbrbttyl/RustBox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fomgbrbttyl%2FRustBox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fomgbrbttyl%2FRustBox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1952f92e41ed7a141ff5a84152ddb5e24b16f523
[INFO] checking omgbrbttyl/RustBox against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fomgbrbttyl%2FRustBox" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/omgbrbttyl/RustBox on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/omgbrbttyl/RustBox
[INFO] finished tweaking git repo https://github.com/omgbrbttyl/RustBox
[INFO] tweaked toml for git repo https://github.com/omgbrbttyl/RustBox written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/omgbrbttyl/RustBox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6fa3779161aec51f02ce481132bb04f5290c7b4f1855a24003e1cd75021b9aec
[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" "6fa3779161aec51f02ce481132bb04f5290c7b4f1855a24003e1cd75021b9aec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fa3779161aec51f02ce481132bb04f5290c7b4f1855a24003e1cd75021b9aec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fa3779161aec51f02ce481132bb04f5290c7b4f1855a24003e1cd75021b9aec", kill_on_drop: false }`
[INFO] [stdout] 6fa3779161aec51f02ce481132bb04f5290c7b4f1855a24003e1cd75021b9aec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d67e4768482a2695ae91dff09562277c37da1ab7456ed7bc8562fb7ce71f0b6
[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" "6d67e4768482a2695ae91dff09562277c37da1ab7456ed7bc8562fb7ce71f0b6", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_box v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `state`
[INFO] [stdout]    --> src/connectfour.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 133 |     state: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `state`
[INFO] [stdout]    --> src/tictactoe.rs:132:5
[INFO] [stdout]     |
[INFO] [stdout] 132 |     state: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "6d67e4768482a2695ae91dff09562277c37da1ab7456ed7bc8562fb7ce71f0b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d67e4768482a2695ae91dff09562277c37da1ab7456ed7bc8562fb7ce71f0b6", kill_on_drop: false }`
[INFO] [stdout] 6d67e4768482a2695ae91dff09562277c37da1ab7456ed7bc8562fb7ce71f0b6