[INFO] cloning repository https://github.com/schulke-214/connect-four
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/schulke-214/connect-four" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fschulke-214%2Fconnect-four", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fschulke-214%2Fconnect-four'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 19cf6a8172c1bf11f9bf538a3d625b7b77e59ac2
[INFO] testing schulke-214/connect-four against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fschulke-214%2Fconnect-four" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/schulke-214/connect-four on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/schulke-214/connect-four
[INFO] finished tweaking git repo https://github.com/schulke-214/connect-four
[INFO] tweaked toml for git repo https://github.com/schulke-214/connect-four written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/schulke-214/connect-four already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 2ebfc0870e05307c5b3658acebf43d0b675e5e40e69b681301e57febb60b9df5
[INFO] running `Command { std: "docker" "start" "-a" "2ebfc0870e05307c5b3658acebf43d0b675e5e40e69b681301e57febb60b9df5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ebfc0870e05307c5b3658acebf43d0b675e5e40e69b681301e57febb60b9df5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ebfc0870e05307c5b3658acebf43d0b675e5e40e69b681301e57febb60b9df5", kill_on_drop: false }`
[INFO] [stdout] 2ebfc0870e05307c5b3658acebf43d0b675e5e40e69b681301e57febb60b9df5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", 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] f631ad25603b4c15b4b9a28a11f634466421ba363723811ea84ca69ba3f02e30
[INFO] running `Command { std: "docker" "start" "-a" "f631ad25603b4c15b4b9a28a11f634466421ba363723811ea84ca69ba3f02e30", kill_on_drop: false }`
[INFO] [stderr]    Compiling connect-four v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `String::split_off` that must be used
[INFO] [stdout]    --> src/main.rs:498:9
[INFO] [stdout]     |
[INFO] [stdout] 498 |         input.split_off(input.len() - 1);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.28s
[INFO] running `Command { std: "docker" "inspect" "f631ad25603b4c15b4b9a28a11f634466421ba363723811ea84ca69ba3f02e30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f631ad25603b4c15b4b9a28a11f634466421ba363723811ea84ca69ba3f02e30", kill_on_drop: false }`
[INFO] [stdout] f631ad25603b4c15b4b9a28a11f634466421ba363723811ea84ca69ba3f02e30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", 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] d49c55ad432eba624193a3c343a7ae73673b40ed0b194c2e38d343c8c8e4ff44
[INFO] running `Command { std: "docker" "start" "-a" "d49c55ad432eba624193a3c343a7ae73673b40ed0b194c2e38d343c8c8e4ff44", kill_on_drop: false }`
[INFO] [stderr]    Compiling connect-four v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `String::split_off` that must be used
[INFO] [stdout]    --> src/main.rs:498:9
[INFO] [stdout]     |
[INFO] [stdout] 498 |         input.split_off(input.len() - 1);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.22s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/connect_four-70a5a960fd45051f)
[INFO] running `Command { std: "docker" "inspect" "d49c55ad432eba624193a3c343a7ae73673b40ed0b194c2e38d343c8c8e4ff44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d49c55ad432eba624193a3c343a7ae73673b40ed0b194c2e38d343c8c8e4ff44", kill_on_drop: false }`
[INFO] [stdout] d49c55ad432eba624193a3c343a7ae73673b40ed0b194c2e38d343c8c8e4ff44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5a7ffa6b355264d35190a9ba4b1960a1bed0d26ca2ea414ebf821ee55224d639
[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" "5a7ffa6b355264d35190a9ba4b1960a1bed0d26ca2ea414ebf821ee55224d639", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `String::split_off` that must be used
[INFO] [stderr]    --> src/main.rs:498:9
[INFO] [stderr]     |
[INFO] [stderr] 498 |         input.split_off(input.len() - 1);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: use `.truncate()` if you don't need the other half
[INFO] [stderr] 
[INFO] [stderr] warning: `connect-four` (bin "connect-four" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/connect_four-70a5a960fd45051f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5a7ffa6b355264d35190a9ba4b1960a1bed0d26ca2ea414ebf821ee55224d639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a7ffa6b355264d35190a9ba4b1960a1bed0d26ca2ea414ebf821ee55224d639", kill_on_drop: false }`
[INFO] [stdout] 5a7ffa6b355264d35190a9ba4b1960a1bed0d26ca2ea414ebf821ee55224d639