[INFO] fetching crate imbalanced-ensemble 0.1.0...
[INFO] testing imbalanced-ensemble-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate imbalanced-ensemble 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate imbalanced-ensemble 0.1.0
[INFO] finished tweaking crates.io crate imbalanced-ensemble 0.1.0
[INFO] tweaked toml for crates.io crate imbalanced-ensemble 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate imbalanced-ensemble 0.1.0 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 imbalanced-ensemble 0.1.0 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e271849381f639d0ceb1d22cbf09bcaebaf41e0e263942c6abf921781b5c60f9
[INFO] running `Command { std: "docker" "start" "-a" "e271849381f639d0ceb1d22cbf09bcaebaf41e0e263942c6abf921781b5c60f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e271849381f639d0ceb1d22cbf09bcaebaf41e0e263942c6abf921781b5c60f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e271849381f639d0ceb1d22cbf09bcaebaf41e0e263942c6abf921781b5c60f9", kill_on_drop: false }`
[INFO] [stdout] e271849381f639d0ceb1d22cbf09bcaebaf41e0e263942c6abf921781b5c60f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] f9aec1b74e2875eccfe7b75604be0e62ff3b17c8d57baf1d37d7850e0e45f923
[INFO] running `Command { std: "docker" "start" "-a" "f9aec1b74e2875eccfe7b75604be0e62ff3b17c8d57baf1d37d7850e0e45f923", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.15
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling matrixmultiply v0.3.10
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling rustversion v1.0.21
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling fixed v1.29.0
[INFO] [stderr]    Compiling overload v0.1.1
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling nu-ansi-term v0.46.0
[INFO] [stderr]    Compiling thread_local v1.1.9
[INFO] [stderr]    Compiling cc v1.2.29
[INFO] [stderr]    Compiling half v2.6.0
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling linfa v0.7.1
[INFO] [stderr]    Compiling bytemuck v1.23.1
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling ubyte v0.10.4
[INFO] [stderr]    Compiling tracing-subscriber v0.3.19
[INFO] [stderr]    Compiling divrem v1.0.0
[INFO] [stderr]    Compiling elapsed v0.1.2
[INFO] [stderr]    Compiling init_with v1.1.0
[INFO] [stderr]    Compiling sorted-vec v0.8.6
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling generator v0.8.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling approx v0.4.0
[INFO] [stderr]    Compiling ordered-float v4.6.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rand_distr v0.4.3
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling sprs v0.11.1
[INFO] [stderr]    Compiling imbalanced-core v0.1.0
[INFO] [stderr]    Compiling ndarray-rand v0.14.0
[INFO] [stderr]    Compiling linfa-trees v0.7.1
[INFO] [stderr]    Compiling kiddo v4.2.1
[INFO] [stderr]    Compiling imbalanced-sampling v0.1.0
[INFO] [stderr]    Compiling imbalanced-ensemble v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.29s
[INFO] running `Command { std: "docker" "inspect" "f9aec1b74e2875eccfe7b75604be0e62ff3b17c8d57baf1d37d7850e0e45f923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9aec1b74e2875eccfe7b75604be0e62ff3b17c8d57baf1d37d7850e0e45f923", kill_on_drop: false }`
[INFO] [stdout] f9aec1b74e2875eccfe7b75604be0e62ff3b17c8d57baf1d37d7850e0e45f923
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 848ece01d6a6d5060cc05e0f8e8e357e7cd1393972aec7ddab64f86b1d45e6c3
[INFO] running `Command { std: "docker" "start" "-a" "848ece01d6a6d5060cc05e0f8e8e357e7cd1393972aec7ddab64f86b1d45e6c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling adler2 v2.0.1
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling csv-core v0.1.12
[INFO] [stderr]    Compiling flate2 v1.1.2
[INFO] [stderr]    Compiling kiddo v4.2.1
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling csv v1.3.1
[INFO] [stderr]    Compiling sprs v0.11.1
[INFO] [stderr]    Compiling ndarray-rand v0.14.0
[INFO] [stderr]    Compiling imbalanced-core v0.1.0
[INFO] [stderr]    Compiling ndarray-csv v0.5.1
[INFO] [stderr]    Compiling imbalanced-sampling v0.1.0
[INFO] [stderr]    Compiling linfa v0.7.1
[INFO] [stderr]    Compiling linfa-trees v0.7.1
[INFO] [stderr]    Compiling linfa-datasets v0.7.1
[INFO] [stderr]    Compiling imbalanced-ensemble v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 12.30s
[INFO] running `Command { std: "docker" "inspect" "848ece01d6a6d5060cc05e0f8e8e357e7cd1393972aec7ddab64f86b1d45e6c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "848ece01d6a6d5060cc05e0f8e8e357e7cd1393972aec7ddab64f86b1d45e6c3", kill_on_drop: false }`
[INFO] [stdout] 848ece01d6a6d5060cc05e0f8e8e357e7cd1393972aec7ddab64f86b1d45e6c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e3c771fa31bd67c5191d2373962f53dfab4cead07949240f3c91f9223469f2aa
[INFO] running `Command { std: "docker" "start" "-a" "e3c771fa31bd67c5191d2373962f53dfab4cead07949240f3c91f9223469f2aa", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/imbalanced_ensemble-5e216996ab97d2d4)
[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 imbalanced_ensemble
[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" "e3c771fa31bd67c5191d2373962f53dfab4cead07949240f3c91f9223469f2aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3c771fa31bd67c5191d2373962f53dfab4cead07949240f3c91f9223469f2aa", kill_on_drop: false }`
[INFO] [stdout] e3c771fa31bd67c5191d2373962f53dfab4cead07949240f3c91f9223469f2aa