[INFO] cloning repository https://github.com/TheBats/ml-in-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TheBats/ml-in-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheBats%2Fml-in-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheBats%2Fml-in-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25a83e8a29a7dc84c70ca89e957f011dd4f8a667
[INFO] testing TheBats/ml-in-Rust against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheBats%2Fml-in-Rust" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TheBats/ml-in-Rust on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/TheBats/ml-in-Rust
[INFO] finished tweaking git repo https://github.com/TheBats/ml-in-Rust
[INFO] tweaked toml for git repo https://github.com/TheBats/ml-in-Rust written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/TheBats/ml-in-Rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded simba v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 537549ba03f11aeb7355a59444dfb602ca05af7a8996f48b7448b4cd629c1134
[INFO] running `Command { std: "docker" "start" "-a" "537549ba03f11aeb7355a59444dfb602ca05af7a8996f48b7448b4cd629c1134", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "537549ba03f11aeb7355a59444dfb602ca05af7a8996f48b7448b4cd629c1134", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "537549ba03f11aeb7355a59444dfb602ca05af7a8996f48b7448b4cd629c1134", kill_on_drop: false }`
[INFO] [stdout] 537549ba03f11aeb7355a59444dfb602ca05af7a8996f48b7448b4cd629c1134
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffd4c77f3b3000d5de95ba8c2d14d95d9e93e649564ba8853ad358d9fc19d96f
[INFO] running `Command { std: "docker" "start" "-a" "ffd4c77f3b3000d5de95ba8c2d14d95d9e93e649564ba8853ad358d9fc19d96f", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.114
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.6
[INFO] [stderr]    Compiling bytemuck v1.7.3
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling paste v1.0.6
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling matrixmultiply v0.3.2
[INFO] [stderr]    Compiling safe_arch v0.6.0
[INFO] [stderr]    Compiling wide v0.7.4
[INFO] [stderr]    Compiling crossbeam-channel v0.5.2
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling simba v0.7.0
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling nalgebra-macros v0.1.0
[INFO] [stderr]    Compiling nalgebra v0.30.1
[INFO] [stderr]    Compiling ml v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `test_labels`
[INFO] [stdout]   --> src/main.rs:22:47
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let (train_data, train_labels, test_data, test_labels) = data_preparation::train_test_split(vec![median_age], median_house_value, 0.8...
[INFO] [stdout]    |                                               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_labels`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.33s
[INFO] running `Command { std: "docker" "inspect" "ffd4c77f3b3000d5de95ba8c2d14d95d9e93e649564ba8853ad358d9fc19d96f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffd4c77f3b3000d5de95ba8c2d14d95d9e93e649564ba8853ad358d9fc19d96f", kill_on_drop: false }`
[INFO] [stdout] ffd4c77f3b3000d5de95ba8c2d14d95d9e93e649564ba8853ad358d9fc19d96f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 717c11a879401982c99fac9b0320deca0d9f50ae2ce24c432efbe32a0959ca5a
[INFO] running `Command { std: "docker" "start" "-a" "717c11a879401982c99fac9b0320deca0d9f50ae2ce24c432efbe32a0959ca5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling ml v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `test_labels`
[INFO] [stdout]   --> src/main.rs:22:47
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let (train_data, train_labels, test_data, test_labels) = data_preparation::train_test_split(vec![median_age], median_house_value, 0.8...
[INFO] [stdout]    |                                               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_labels`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "717c11a879401982c99fac9b0320deca0d9f50ae2ce24c432efbe32a0959ca5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "717c11a879401982c99fac9b0320deca0d9f50ae2ce24c432efbe32a0959ca5a", kill_on_drop: false }`
[INFO] [stdout] 717c11a879401982c99fac9b0320deca0d9f50ae2ce24c432efbe32a0959ca5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e6541283c62f3f0fe368a5548bd366b555adc19e6b625c546c422331b27f674e
[INFO] running `Command { std: "docker" "start" "-a" "e6541283c62f3f0fe368a5548bd366b555adc19e6b625c546c422331b27f674e", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `test_labels`
[INFO] [stderr]   --> src/main.rs:22:47
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let (train_data, train_labels, test_data, test_labels) = data_preparation::train_test_split(vec![median_age], median_house_value, 0.8...
[INFO] [stderr]    |                                               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_labels`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ml` (bin "ml" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ml-ca5f2c19da6c2678)
[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" "e6541283c62f3f0fe368a5548bd366b555adc19e6b625c546c422331b27f674e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6541283c62f3f0fe368a5548bd366b555adc19e6b625c546c422331b27f674e", kill_on_drop: false }`
[INFO] [stdout] e6541283c62f3f0fe368a5548bd366b555adc19e6b625c546c422331b27f674e