[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 master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhybras%2FConnect-4-AI" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hybras/Connect-4-AI on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "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-2-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ac183cee0079ddc003a334ffc2eb3bb3792b85d662cdcf534f1e37060fb69d8
[INFO] running `Command { std: "docker" "start" "-a" "7ac183cee0079ddc003a334ffc2eb3bb3792b85d662cdcf534f1e37060fb69d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ac183cee0079ddc003a334ffc2eb3bb3792b85d662cdcf534f1e37060fb69d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ac183cee0079ddc003a334ffc2eb3bb3792b85d662cdcf534f1e37060fb69d8", kill_on_drop: false }`
[INFO] [stdout] 7ac183cee0079ddc003a334ffc2eb3bb3792b85d662cdcf534f1e37060fb69d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 139af540b99df1a0815cb04721760bd88de33e75235681583f159a597160d901
[INFO] running `Command { std: "docker" "start" "-a" "139af540b99df1a0815cb04721760bd88de33e75235681583f159a597160d901", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]     Checking radium v0.3.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking bitvec v0.17.4
[INFO] [stderr]     Checking connect-4-ai v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `fold_first` found for struct `Enumerate` in the current scope
[INFO] [stdout]   --> src/state/alt_bit_board.rs:86:7
[INFO] [stdout]    |
[INFO] [stdout] 83 |                   if pieces_loop
[INFO] [stdout]    |  ____________________-
[INFO] [stdout] 84 | |                     .into_iter()
[INFO] [stdout] 85 | |                     .enumerate()
[INFO] [stdout] 86 | |                     .fold_first(|(_, a), (idx_b, mut b)| {
[INFO] [stdout]    | |                     -^^^^^^^^^^ method not found in `Enumerate<IntoIter<BitBox>>`
[INFO] [stdout]    | |_____________________|
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `fold_first` found for struct `Enumerate` in the current scope
[INFO] [stdout]   --> src/state/alt_bit_board.rs:86:7
[INFO] [stdout]    |
[INFO] [stdout] 83 |                   if pieces_loop
[INFO] [stdout]    |  ____________________-
[INFO] [stdout] 84 | |                     .into_iter()
[INFO] [stdout] 85 | |                     .enumerate()
[INFO] [stdout] 86 | |                     .fold_first(|(_, a), (idx_b, mut b)| {
[INFO] [stdout]    | |                     -^^^^^^^^^^ method not found in `Enumerate<IntoIter<BitBox>>`
[INFO] [stdout]    | |_____________________|
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `connect-4-ai` (bin "connect-4-ai") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 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` (bin "connect-4-ai" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "139af540b99df1a0815cb04721760bd88de33e75235681583f159a597160d901", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "139af540b99df1a0815cb04721760bd88de33e75235681583f159a597160d901", kill_on_drop: false }`
[INFO] [stdout] 139af540b99df1a0815cb04721760bd88de33e75235681583f159a597160d901
[INFO] checking hybras/Connect-4-AI against try#dae34b759e282c069aa28752564694effd121a63 for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhybras%2FConnect-4-AI" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hybras/Connect-4-AI on toolchain dae34b759e282c069aa28752564694effd121a63
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "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-2-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31269f94f8a45b67fb8f0a056ac86952057195b7bc133e9cd5e91eda0db78418
[INFO] running `Command { std: "docker" "start" "-a" "31269f94f8a45b67fb8f0a056ac86952057195b7bc133e9cd5e91eda0db78418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31269f94f8a45b67fb8f0a056ac86952057195b7bc133e9cd5e91eda0db78418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31269f94f8a45b67fb8f0a056ac86952057195b7bc133e9cd5e91eda0db78418", kill_on_drop: false }`
[INFO] [stdout] 31269f94f8a45b67fb8f0a056ac86952057195b7bc133e9cd5e91eda0db78418
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ad9376e375d8edd050c419be4632425fc743e758ae0bfeed4678ee85d1ee2ef
[INFO] running `Command { std: "docker" "start" "-a" "7ad9376e375d8edd050c419be4632425fc743e758ae0bfeed4678ee85d1ee2ef", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] skipping non-2021 edition `2018`
[INFO] running `Command { std: "docker" "inspect" "7ad9376e375d8edd050c419be4632425fc743e758ae0bfeed4678ee85d1ee2ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ad9376e375d8edd050c419be4632425fc743e758ae0bfeed4678ee85d1ee2ef", kill_on_drop: false }`
[INFO] [stdout] 7ad9376e375d8edd050c419be4632425fc743e758ae0bfeed4678ee85d1ee2ef