[INFO] fetching crate ferrolearn 0.5.0...
[INFO] testing ferrolearn-0.5.0 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate ferrolearn 0.5.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate ferrolearn 0.5.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ferrolearn 0.5.0
[INFO] tweaked toml for crates.io crate ferrolearn 0.5.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ferrolearn 0.5.0 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ferrolearn 0.5.0 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 9dfbe5c4e7db892919d73548cd2aa5e3417413f972f0192b5d7cc22f11ac060f
[INFO] running `Command { std: "docker" "start" "9dfbe5c4e7db892919d73548cd2aa5e3417413f972f0192b5d7cc22f11ac060f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9dfbe5c4e7db892919d73548cd2aa5e3417413f972f0192b5d7cc22f11ac060f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9dfbe5c4e7db892919d73548cd2aa5e3417413f972f0192b5d7cc22f11ac060f" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9dfbe5c4e7db892919d73548cd2aa5e3417413f972f0192b5d7cc22f11ac060f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9dfbe5c4e7db892919d73548cd2aa5e3417413f972f0192b5d7cc22f11ac060f" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
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[INFO] [stderr]    Compiling statrs v0.18.0
[INFO] [stderr]    Compiling core-math v1.0.1
[INFO] [stderr]    Compiling ferray-ufunc v0.5.0
[INFO] [stderr]    Compiling ferray-stats v0.5.0
[INFO] [stderr]    Compiling ferray-linalg v0.5.0
[INFO] [stderr]    Compiling ferray-random v0.5.0
[INFO] [stderr]    Compiling ferray v0.5.0
[INFO] [stderr]    Compiling ferrolearn-core v0.5.0
[INFO] [stderr]    Compiling ferrolearn-datasets v0.5.0
[INFO] [stderr]    Compiling ferrolearn-numerical v0.5.0
[INFO] [stderr]    Compiling ferrolearn-sparse v0.5.0
[INFO] [stderr]    Compiling ferrolearn-linear v0.5.0
[INFO] [stderr]    Compiling ferrolearn-fetch v0.5.0
[INFO] [stderr]    Compiling ferrolearn-neighbors v0.5.0
[INFO] [stderr]    Compiling ferrolearn-io v0.5.0
[INFO] [stderr]    Compiling ferrolearn-tree v0.5.0
[INFO] [stderr]    Compiling ferrolearn-bayes v0.5.0
[INFO] [stderr]    Compiling ferrolearn-covariance v0.5.0
[INFO] [stderr]    Compiling ferrolearn-model-sel v0.5.0
[INFO] [stderr]    Compiling ferrolearn-metrics v0.5.0
[INFO] [stderr]    Compiling ferrolearn-decomp v0.5.0
[INFO] [stderr]    Compiling ferrolearn-neural v0.5.0
[INFO] [stderr]    Compiling ferrolearn-cluster v0.5.0
[INFO] [stderr]    Compiling ferrolearn-preprocess v0.5.0
[INFO] [stderr]    Compiling ferrolearn v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 9m 28s
[INFO] running `Command { std: "docker" "inspect" "9dfbe5c4e7db892919d73548cd2aa5e3417413f972f0192b5d7cc22f11ac060f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9dfbe5c4e7db892919d73548cd2aa5e3417413f972f0192b5d7cc22f11ac060f" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling ferrolearn v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 26.21s
[INFO] running `Command { std: "docker" "inspect" "9dfbe5c4e7db892919d73548cd2aa5e3417413f972f0192b5d7cc22f11ac060f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "9dfbe5c4e7db892919d73548cd2aa5e3417413f972f0192b5d7cc22f11ac060f" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.24s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/release/build/ferrolearn/0c8166ca01102d44/out/ferrolearn-0c8166ca01102d44)
[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 tests/integration_tests.rs (/opt/rustwide/target/release/build/ferrolearn/9c4ce2f037cbc188/out/integration_tests-9c4ce2f037cbc188)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test test_preprocessing_chain_e2e ... ok
[INFO] [stdout] test test_clustering_e2e ... ok
[INFO] [stdout] test test_serialization_roundtrip ... ok
[INFO] [stdout] test test_classification_pipeline_e2e ... ok
[INFO] [stdout] test test_classification_pipeline_f32_e2e ... ok
[INFO] [stdout] test test_regression_pipeline_e2e ... ok
[INFO] [stdout] test test_tree_ensemble_e2e ... ok
[INFO] [stdout] test test_cross_validation_e2e ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ferrolearn
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - prelude (line 53) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 0.65s; merged doctests compilation took 0.62s
[INFO] running `Command { std: "docker" "inspect" "9dfbe5c4e7db892919d73548cd2aa5e3417413f972f0192b5d7cc22f11ac060f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dfbe5c4e7db892919d73548cd2aa5e3417413f972f0192b5d7cc22f11ac060f", kill_on_drop: false }`
[INFO] [stdout] 9dfbe5c4e7db892919d73548cd2aa5e3417413f972f0192b5d7cc22f11ac060f