[INFO] cloning repository https://github.com/izco42/basic-perceptron
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/izco42/basic-perceptron" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fizco42%2Fbasic-perceptron", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fizco42%2Fbasic-perceptron'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6714c47810ba9fa14680322cf43b0bd0e1d499c
[INFO] testing izco42/basic-perceptron against master#552a959051cebf8f88a8f558399baf733bec9ce0 for pr-136932
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fizco42%2Fbasic-perceptron" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/izco42/basic-perceptron on toolchain 552a959051cebf8f88a8f558399baf733bec9ce0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/izco42/basic-perceptron
[INFO] finished tweaking git repo https://github.com/izco42/basic-perceptron
[INFO] tweaked toml for git repo https://github.com/izco42/basic-perceptron written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/izco42/basic-perceptron 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" "+552a959051cebf8f88a8f558399baf733bec9ce0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9634e4a094fdb4050ca57b3ec25c0b22471beb98d544b6557c04d55e34ea129
[INFO] running `Command { std: "docker" "start" "-a" "d9634e4a094fdb4050ca57b3ec25c0b22471beb98d544b6557c04d55e34ea129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9634e4a094fdb4050ca57b3ec25c0b22471beb98d544b6557c04d55e34ea129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9634e4a094fdb4050ca57b3ec25c0b22471beb98d544b6557c04d55e34ea129", kill_on_drop: false }`
[INFO] [stdout] d9634e4a094fdb4050ca57b3ec25c0b22471beb98d544b6557c04d55e34ea129
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d03f0eae5de8cb47267cd65368e57e56db923e129f5e1535acf560317847427
[INFO] running `Command { std: "docker" "start" "-a" "1d03f0eae5de8cb47267cd65368e57e56db923e129f5e1535acf560317847427", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.202
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling serde_json v1.0.117
[INFO] [stderr]    Compiling ryu v1.0.18
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling perceptron v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x_train`
[INFO] [stdout]   --> src/main.rs:24:10
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let (x_train, x_test, y_train, _y_test) = dataframe::simple_split(x, y, 0.7);
[INFO] [stdout]    |          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_train`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y_train`
[INFO] [stdout]   --> src/main.rs:24:27
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let (x_train, x_test, y_train, _y_test) = dataframe::simple_split(x, y, 0.7);
[INFO] [stdout]    |                           ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_y_train`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.86s
[INFO] running `Command { std: "docker" "inspect" "1d03f0eae5de8cb47267cd65368e57e56db923e129f5e1535acf560317847427", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d03f0eae5de8cb47267cd65368e57e56db923e129f5e1535acf560317847427", kill_on_drop: false }`
[INFO] [stdout] 1d03f0eae5de8cb47267cd65368e57e56db923e129f5e1535acf560317847427
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57dfdb72e82ae1a2fda2e25a520c1273302bf1784dc8fe6e5e7631bc65a9d2f4
[INFO] running `Command { std: "docker" "start" "-a" "57dfdb72e82ae1a2fda2e25a520c1273302bf1784dc8fe6e5e7631bc65a9d2f4", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: write /var/lib/docker/containers/57dfdb72e82ae1a2fda2e25a520c1273302bf1784dc8fe6e5e7631bc65a9d2f4/hosts: no space left on device
[INFO] running `Command { std: "docker" "inspect" "57dfdb72e82ae1a2fda2e25a520c1273302bf1784dc8fe6e5e7631bc65a9d2f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57dfdb72e82ae1a2fda2e25a520c1273302bf1784dc8fe6e5e7631bc65a9d2f4", kill_on_drop: false }`
[INFO] [stdout] 57dfdb72e82ae1a2fda2e25a520c1273302bf1784dc8fe6e5e7631bc65a9d2f4