[INFO] fetching crate linfa-trees 0.2.1...
[INFO] testing linfa-trees-0.2.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate linfa-trees 0.2.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate linfa-trees 0.2.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate linfa-trees 0.2.1
[INFO] finished tweaking crates.io crate linfa-trees 0.2.1
[INFO] tweaked toml for crates.io crate linfa-trees 0.2.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate linfa-trees 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89a7052029522636d6e4690b240c3957b53f1eb0e241f97156670a12e410429b
[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" "89a7052029522636d6e4690b240c3957b53f1eb0e241f97156670a12e410429b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89a7052029522636d6e4690b240c3957b53f1eb0e241f97156670a12e410429b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89a7052029522636d6e4690b240c3957b53f1eb0e241f97156670a12e410429b", kill_on_drop: false }`
[INFO] [stdout] 89a7052029522636d6e4690b240c3957b53f1eb0e241f97156670a12e410429b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6689cfcc90a2b808766bd31d922bcdeee7f51cd8e4b12e67f42c75bae0b502ed
[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" "6689cfcc90a2b808766bd31d922bcdeee7f51cd8e4b12e67f42c75bae0b502ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.1
[INFO] [stderr]    Compiling rand_distr v0.2.2
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling ndarray-rand v0.11.0
[INFO] [stderr]    Compiling linfa-trees v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.40s
[INFO] running `Command { std: "docker" "inspect" "6689cfcc90a2b808766bd31d922bcdeee7f51cd8e4b12e67f42c75bae0b502ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6689cfcc90a2b808766bd31d922bcdeee7f51cd8e4b12e67f42c75bae0b502ed", kill_on_drop: false }`
[INFO] [stdout] 6689cfcc90a2b808766bd31d922bcdeee7f51cd8e4b12e67f42c75bae0b502ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e86ccf3f7ae078d99172961a1897294c7ce6a8bcd9b448cdd8593655f8aab6b3
[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" "e86ccf3f7ae078d99172961a1897294c7ce6a8bcd9b448cdd8593655f8aab6b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.52
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling bstr v0.2.14
[INFO] [stderr]    Compiling rand_isaac v0.2.0
[INFO] [stderr]    Compiling csv v1.1.5
[INFO] [stderr]    Compiling tinytemplate v1.1.0
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling py_literal v0.2.2
[INFO] [stderr]    Compiling ndarray-npy v0.5.0
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stderr]    Compiling linfa-trees v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 53.95s
[INFO] running `Command { std: "docker" "inspect" "e86ccf3f7ae078d99172961a1897294c7ce6a8bcd9b448cdd8593655f8aab6b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e86ccf3f7ae078d99172961a1897294c7ce6a8bcd9b448cdd8593655f8aab6b3", kill_on_drop: false }`
[INFO] [stdout] e86ccf3f7ae078d99172961a1897294c7ce6a8bcd9b448cdd8593655f8aab6b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1553a9982cc8b5ea296163a916cf5729cbb8b2134ebd208b2c83dbb470b831ea
[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" "1553a9982cc8b5ea296163a916cf5729cbb8b2134ebd208b2c83dbb470b831ea", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/linfa_trees-b6ca6492499647a8
[INFO] [stdout] running 4 tests
[INFO] [stdout] test decision_trees::algorithm::tests::gini_impurity_example ... ok
[INFO] [stdout] test decision_trees::algorithm::tests::class_freq_example ... ok
[INFO] [stdout] test decision_trees::algorithm::tests::prediction_for_rows_example ... ok
[INFO] [stdout] test decision_trees::algorithm::tests::entropy_example ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests linfa-trees
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1553a9982cc8b5ea296163a916cf5729cbb8b2134ebd208b2c83dbb470b831ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1553a9982cc8b5ea296163a916cf5729cbb8b2134ebd208b2c83dbb470b831ea", kill_on_drop: false }`
[INFO] [stdout] 1553a9982cc8b5ea296163a916cf5729cbb8b2134ebd208b2c83dbb470b831ea