[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] building hybras/Connect-4-AI against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhybras%2FConnect-4-AI" "/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/hybras/Connect-4-AI on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-6/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" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "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] c06b2c013594d1be7dde7d79f3b51fe7844a5e780779a0b9335ac578b45d1a31
[INFO] running `Command { std: "docker" "start" "-a" "c06b2c013594d1be7dde7d79f3b51fe7844a5e780779a0b9335ac578b45d1a31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c06b2c013594d1be7dde7d79f3b51fe7844a5e780779a0b9335ac578b45d1a31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c06b2c013594d1be7dde7d79f3b51fe7844a5e780779a0b9335ac578b45d1a31", kill_on_drop: false }`
[INFO] [stdout] c06b2c013594d1be7dde7d79f3b51fe7844a5e780779a0b9335ac578b45d1a31
[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=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" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 227f93a44bc070d4250f96ac78f52f5180be104a316d72edf26d52c690cb074d
[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" "227f93a44bc070d4250f96ac78f52f5180be104a316d72edf26d52c690cb074d", kill_on_drop: false }`
[INFO] [stderr]    Compiling radium v0.3.0
[INFO] [stderr]    Compiling bitvec v0.17.4
[INFO] [stderr]    Compiling connect-4-ai v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `fold_first` found for struct `Enumerate<std::vec::IntoIter<BitBox>>` in the current scope
[INFO] [stdout]   --> src/state/alt_bit_board.rs:86:7
[INFO] [stdout]    |
[INFO] [stdout] 86 |                     .fold_first(|(_, a), (idx_b, mut b)| {
[INFO] [stdout]    |                      ^^^^^^^^^^ method not found in `Enumerate<std::vec::IntoIter<BitBox>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `connect-4-ai`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "227f93a44bc070d4250f96ac78f52f5180be104a316d72edf26d52c690cb074d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "227f93a44bc070d4250f96ac78f52f5180be104a316d72edf26d52c690cb074d", kill_on_drop: false }`
[INFO] [stdout] 227f93a44bc070d4250f96ac78f52f5180be104a316d72edf26d52c690cb074d
