[INFO] fetching crate connect-four-ai 1.0.0...
[INFO] testing connect-four-ai-1.0.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate connect-four-ai 1.0.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate connect-four-ai 1.0.0
[INFO] finished tweaking crates.io crate connect-four-ai 1.0.0
[INFO] tweaked toml for crates.io crate connect-four-ai 1.0.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate connect-four-ai 1.0.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate connect-four-ai 1.0.0 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42503a6a317dae08b4f6f297547a249be9d57100f3e54fb8e9c1c8a7633d3510
[INFO] running `Command { std: "docker" "start" "-a" "42503a6a317dae08b4f6f297547a249be9d57100f3e54fb8e9c1c8a7633d3510", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42503a6a317dae08b4f6f297547a249be9d57100f3e54fb8e9c1c8a7633d3510", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42503a6a317dae08b4f6f297547a249be9d57100f3e54fb8e9c1c8a7633d3510", kill_on_drop: false }`
[INFO] [stdout] 42503a6a317dae08b4f6f297547a249be9d57100f3e54fb8e9c1c8a7633d3510
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ce6ac89cfd5de9659ac0efb2c35023042625ee082931516531fd1ac81e530c8
[INFO] running `Command { std: "docker" "start" "-a" "6ce6ac89cfd5de9659ac0efb2c35023042625ee082931516531fd1ac81e530c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling proc-macro2 v1.0.97
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling portable-atomic v1.11.1
[INFO] [stderr]    Compiling unicode-width v0.2.1
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling unit-prefix v0.5.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling console v0.16.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling syn v2.0.105
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling indicatif v0.18.0
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling connect-four-ai v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.48s
[INFO] running `Command { std: "docker" "inspect" "6ce6ac89cfd5de9659ac0efb2c35023042625ee082931516531fd1ac81e530c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ce6ac89cfd5de9659ac0efb2c35023042625ee082931516531fd1ac81e530c8", kill_on_drop: false }`
[INFO] [stdout] 6ce6ac89cfd5de9659ac0efb2c35023042625ee082931516531fd1ac81e530c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff411c7e387dba78e40793220c04bd10e507941d24e6de1dc1dde89093497e1b
[INFO] running `Command { std: "docker" "start" "-a" "ff411c7e387dba78e40793220c04bd10e507941d24e6de1dc1dde89093497e1b", kill_on_drop: false }`
[INFO] [stderr]    Compiling connect-four-ai v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "ff411c7e387dba78e40793220c04bd10e507941d24e6de1dc1dde89093497e1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff411c7e387dba78e40793220c04bd10e507941d24e6de1dc1dde89093497e1b", kill_on_drop: false }`
[INFO] [stdout] ff411c7e387dba78e40793220c04bd10e507941d24e6de1dc1dde89093497e1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5b0e909ff9877cba59bc37273ebc8f038d998427858e01475385a6ea27e17192
[INFO] running `Command { std: "docker" "start" "-a" "5b0e909ff9877cba59bc37273ebc8f038d998427858e01475385a6ea27e17192", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/connect_four_ai-7b2e366d814ff942)
[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] [stderr]      Running unittests src/bin/benchmark.rs (/opt/rustwide/target/debug/deps/benchmark-104b6d788c38ec75)
[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] [stderr]      Running unittests src/bin/evaluate_difficulties.rs (/opt/rustwide/target/debug/deps/evaluate_difficulties-e93459c039081936)
[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] [stderr]      Running unittests src/bin/generate_book.rs (/opt/rustwide/target/debug/deps/generate_book-751b0851b0c890cd)
[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] [stderr]    Doc-tests connect_four_ai
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/board/position.rs - board::position::Position::from_board_string (line 85) ... ok
[INFO] [stdout] test src/board/position.rs - board::position::Position::from_moves (line 165) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.61s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5b0e909ff9877cba59bc37273ebc8f038d998427858e01475385a6ea27e17192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b0e909ff9877cba59bc37273ebc8f038d998427858e01475385a6ea27e17192", kill_on_drop: false }`
[INFO] [stdout] 5b0e909ff9877cba59bc37273ebc8f038d998427858e01475385a6ea27e17192