[INFO] cloning repository https://github.com/hybras/Connect-4-AI
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hybras/Connect-4-AI" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhybras%2FConnect-4-AI", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhybras%2FConnect-4-AI'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4b8ce25ddc1ed68040bd876720f301198d716b82
[INFO] checking hybras/Connect-4-AI against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhybras%2FConnect-4-AI" "/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/hybras/Connect-4-AI on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hybras/Connect-4-AI
[INFO] finished tweaking git repo https://github.com/hybras/Connect-4-AI
[INFO] tweaked toml for git repo https://github.com/hybras/Connect-4-AI written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/hybras/Connect-4-AI already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded radium v0.3.0
[INFO] [stderr]   Downloaded bitvec v0.17.4
[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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 301a6a0a6559c9e27020c007b2081fb8375b11ff16100e8c8a8a2fafc89bf896
[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" "301a6a0a6559c9e27020c007b2081fb8375b11ff16100e8c8a8a2fafc89bf896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "301a6a0a6559c9e27020c007b2081fb8375b11ff16100e8c8a8a2fafc89bf896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "301a6a0a6559c9e27020c007b2081fb8375b11ff16100e8c8a8a2fafc89bf896", kill_on_drop: false }`
[INFO] [stdout] 301a6a0a6559c9e27020c007b2081fb8375b11ff16100e8c8a8a2fafc89bf896
[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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e0b3f8e617bef5b2cf49462b3ba8d8f0b446562420a64629ed9140d413aedfa
[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" "4e0b3f8e617bef5b2cf49462b3ba8d8f0b446562420a64629ed9140d413aedfa", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]     Checking connect-4-ai v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BitBoard`
[INFO] [stdout]    --> src/state.rs:127:27
[INFO] [stdout]     |
[INFO] [stdout] 127 |     use super::{AltBitBoard, BitBoard, Board, FlatBoard};
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset`
[INFO] [stdout]   --> src/state/alt_bit_board.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub(crate) fn reset(&mut self) {
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset`
[INFO] [stdout]   --> src/state/bit_board.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub(crate) fn reset(&mut self) {
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset`
[INFO] [stdout]   --> src/state/bit_board.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub(crate) fn reset(&mut self) {
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.02s
[INFO] running `Command { std: "docker" "inspect" "4e0b3f8e617bef5b2cf49462b3ba8d8f0b446562420a64629ed9140d413aedfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e0b3f8e617bef5b2cf49462b3ba8d8f0b446562420a64629ed9140d413aedfa", kill_on_drop: false }`
[INFO] [stdout] 4e0b3f8e617bef5b2cf49462b3ba8d8f0b446562420a64629ed9140d413aedfa