[INFO] cloning repository https://github.com/jprio/data_science
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jprio/data_science" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjprio%2Fdata_science", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjprio%2Fdata_science'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a2ea14394909c33ad784c8be2387fb3fd6b9d34
[INFO] checking jprio/data_science against 1.95.0-beta.7 for beta-1.95-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjprio%2Fdata_science" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jprio/data_science
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/jprio/data_science
[INFO] tweaked toml for git repo https://github.com/jprio/data_science written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jprio/data_science on toolchain 1.95.0-beta.7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0-beta.7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jprio/data_science 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" "+1.95.0-beta.7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0-beta.7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 520e01d7189c041ab81128832910a9a779b0e3dc26e948dba2d06cb89bb879bd
[INFO] running `Command { std: "docker" "start" "-a" "520e01d7189c041ab81128832910a9a779b0e3dc26e948dba2d06cb89bb879bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "520e01d7189c041ab81128832910a9a779b0e3dc26e948dba2d06cb89bb879bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "520e01d7189c041ab81128832910a9a779b0e3dc26e948dba2d06cb89bb879bd", kill_on_drop: false }`
[INFO] [stdout] 520e01d7189c041ab81128832910a9a779b0e3dc26e948dba2d06cb89bb879bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0-beta.7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ab6989e9633178a978cc4cc98bfd56d784342bbe8b324890ee0af55fa50c9ff
[INFO] running `Command { std: "docker" "start" "-a" "8ab6989e9633178a978cc4cc98bfd56d784342bbe8b324890ee0af55fa50c9ff", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `polars_core::prelude::*`
[INFO] [stdout]  --> examples/decision_tree/classification.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use polars_core::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `dsl::Expr` and `prelude::*`
[INFO] [stdout]  --> examples/decision_tree/classification.rs:3:20
[INFO] [stdout]   |
[INFO] [stdout] 3 | use polars_lazy::{ prelude::*, dsl::Expr };
[INFO] [stdout]   |                    ^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `best_split` is never used
[INFO] [stdout]   --> examples/decision_tree/classification.rs:72:4
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn best_split(df: DataFrame, feature: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 04s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: openssl v0.10.52, polars-plan v0.27.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "8ab6989e9633178a978cc4cc98bfd56d784342bbe8b324890ee0af55fa50c9ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ab6989e9633178a978cc4cc98bfd56d784342bbe8b324890ee0af55fa50c9ff", kill_on_drop: false }`
[INFO] [stdout] 8ab6989e9633178a978cc4cc98bfd56d784342bbe8b324890ee0af55fa50c9ff