[INFO] cloning repository https://github.com/clementreiffers/linear-regression-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/clementreiffers/linear-regression-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclementreiffers%2Flinear-regression-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclementreiffers%2Flinear-regression-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a39f0e0efba231fee7415873d6d413aebd76a8b3
[INFO] checking clementreiffers/linear-regression-rust against master#2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclementreiffers%2Flinear-regression-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/clementreiffers/linear-regression-rust on toolchain 2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/clementreiffers/linear-regression-rust
[INFO] finished tweaking git repo https://github.com/clementreiffers/linear-regression-rust
[INFO] tweaked toml for git repo https://github.com/clementreiffers/linear-regression-rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/clementreiffers/linear-regression-rust 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" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4b2c29e3e7aaffe0056f2816e5bc56596383eb75ac1c0c1485b1da267c619b1
[INFO] running `Command { std: "docker" "start" "-a" "e4b2c29e3e7aaffe0056f2816e5bc56596383eb75ac1c0c1485b1da267c619b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4b2c29e3e7aaffe0056f2816e5bc56596383eb75ac1c0c1485b1da267c619b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4b2c29e3e7aaffe0056f2816e5bc56596383eb75ac1c0c1485b1da267c619b1", kill_on_drop: false }`
[INFO] [stdout] e4b2c29e3e7aaffe0056f2816e5bc56596383eb75ac1c0c1485b1da267c619b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bce1d83066e86a5b0878ad7615f3182fdcfd819cd14f5d50f8742df00db207bd
[INFO] running `Command { std: "docker" "start" "-a" "bce1d83066e86a5b0878ad7615f3182fdcfd819cd14f5d50f8742df00db207bd", kill_on_drop: false }`
[INFO] [stderr]     Checking linear_regression v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `covariance` and `variance`
[INFO] [stdout]  --> src/main.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::maths::{covariance, variance};
[INFO] [stdout]   |                    ^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `covariance` and `variance`
[INFO] [stdout]  --> src/main.rs:2:20
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::maths::{covariance, variance};
[INFO] [stdout]   |                    ^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "bce1d83066e86a5b0878ad7615f3182fdcfd819cd14f5d50f8742df00db207bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bce1d83066e86a5b0878ad7615f3182fdcfd819cd14f5d50f8742df00db207bd", kill_on_drop: false }`
[INFO] [stdout] bce1d83066e86a5b0878ad7615f3182fdcfd819cd14f5d50f8742df00db207bd