[INFO] cloning repository https://github.com/zhehanyu/rust-ml
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c021ac0f56e85f19ec52631e85d9a0ce53f66884
[INFO] testing zhehanyu/rust-ml against try#a7ce54db9b096bd1098d07c645b489195a667c9f for pr-137940-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzhehanyu%2Frust-ml" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zhehanyu/rust-ml on toolchain a7ce54db9b096bd1098d07c645b489195a667c9f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zhehanyu/rust-ml
[INFO] finished tweaking git repo https://github.com/zhehanyu/rust-ml
[INFO] tweaked toml for git repo https://github.com/zhehanyu/rust-ml written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/zhehanyu/rust-ml 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" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "inspect" "875a73e6c87aa217dbb7f9bb9bdc19a18bb5a34ecfabd5466569eefb19f49873", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a37e4522c442a312a61e11cd140fea8b78510ec31aae345953b77ad2e02003a5
[INFO] running `Command { std: "docker" "start" "-a" "a37e4522c442a312a61e11cd140fea8b78510ec31aae345953b77ad2e02003a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]    Compiling semver v1.0.23
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[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling cc v1.1.7
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[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling fdeflate v0.3.4
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling yeslogic-fontconfig-sys v5.0.0
[INFO] [stderr]    Compiling libloading v0.8.5
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling flate2 v1.0.31
[INFO] [stderr]    Compiling color_quant v1.1.0
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[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/process_data/mod.rs:50:19
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn normolized(mut raw_data: OwnedFloatMatrix, skip_last_column: bool) -> OwnedFloatMatrix {
[INFO] [stdout]    |                   ----^^^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::prelude::*`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use ndarray::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/process_data/mod.rs:50:19
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn normolized(mut raw_data: OwnedFloatMatrix, skip_last_column: bool) -> OwnedFloatMatrix {
[INFO] [stdout]    |                   ----^^^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `linear_regression_cost` is never used
[INFO] [stdout]  --> src/linear_regression/mod.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn linear_regression_cost(x: ViewFloatMatrix, y: ViewFloatMatrix, theta: ViewFloatMatrix) -> f64 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `linear_regression_gradient_descent` is never used
[INFO] [stdout]   --> src/linear_regression/mod.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn linear_regression_gradient_descent(x: ViewFloatMatrix, y: ViewFloatMatrix, mut theta: ViewMutFloatMatrix, alpha: f64, iters: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process_linear_regression` is never used
[INFO] [stdout]   --> src/linear_regression/mod.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn process_linear_regression(raw_data: OwnedFloatMatrix) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid` is never used
[INFO] [stdout]  --> src/logistic_regression/mod.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn sigmoid(z: f64) -> f64 {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `logistic_regression_cost` is never used
[INFO] [stdout]  --> src/logistic_regression/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn logistic_regression_cost(x: ViewFloatMatrix, y: ViewFloatMatrix, theta: ViewFloatMatrix) -> f64 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `logistic_regression_gradient_descent` is never used
[INFO] [stdout]   --> src/logistic_regression/mod.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn logistic_regression_gradient_descent(x: ViewFloatMatrix, y: ViewFloatMatrix, mut theta: ViewMutFloatMatrix, alpha: f64, iters: usi...
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process_logistic_regression` is never used
[INFO] [stdout]   --> src/logistic_regression/mod.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn process_logistic_regression(raw_data: OwnedFloatMatrix) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `OwnedFloatMatrix` is never used
[INFO] [stdout]  --> src/process_data/mod.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub type OwnedFloatMatrix = ArrayBase<ndarray::OwnedRepr<f64>, ndarray::Dim<[usize; 2]>>;
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ViewFloatMatrix` is never used
[INFO] [stdout]  --> src/process_data/mod.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub type ViewFloatMatrix<'a> = ArrayBase<ndarray::ViewRepr<&'a f64>, ndarray::Dim<[usize; 2]>>;
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ViewMutFloatMatrix` is never used
[INFO] [stdout]   --> src/process_data/mod.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub type ViewMutFloatMatrix<'a> = ArrayBase<ndarray::ViewRepr<&'a mut f64>, ndarray::Dim<[usize; 2]>>;
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_lines` is never used
[INFO] [stdout]   --> src/process_data/mod.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_float_matrix` is never used
[INFO] [stdout]   --> src/process_data/mod.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn read_float_matrix<P>(filename: P) -> Option<OwnedFloatMatrix>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `normolized` is never used
[INFO] [stdout]   --> src/process_data/mod.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn normolized(mut raw_data: OwnedFloatMatrix, skip_last_column: bool) -> OwnedFloatMatrix {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plot_data` is never used
[INFO] [stdout]   --> src/process_data/mod.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn plot_data(data: ViewFloatMatrix, path: &str) -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.62s
[INFO] running `Command { std: "docker" "inspect" "a37e4522c442a312a61e11cd140fea8b78510ec31aae345953b77ad2e02003a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a37e4522c442a312a61e11cd140fea8b78510ec31aae345953b77ad2e02003a5", kill_on_drop: false }`
[INFO] [stdout] a37e4522c442a312a61e11cd140fea8b78510ec31aae345953b77ad2e02003a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 626d24d883ce12117a55237e9d4c9a60407a1177a878e458efc7c42fa4b444d6
[INFO] running `Command { std: "docker" "start" "-a" "626d24d883ce12117a55237e9d4c9a60407a1177a878e458efc7c42fa4b444d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-ml v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/process_data/mod.rs:50:19
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn normolized(mut raw_data: OwnedFloatMatrix, skip_last_column: bool) -> OwnedFloatMatrix {
[INFO] [stdout]    |                   ----^^^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::prelude::*`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use ndarray::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/process_data/mod.rs:50:19
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn normolized(mut raw_data: OwnedFloatMatrix, skip_last_column: bool) -> OwnedFloatMatrix {
[INFO] [stdout]    |                   ----^^^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `linear_regression_cost` is never used
[INFO] [stdout]  --> src/linear_regression/mod.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn linear_regression_cost(x: ViewFloatMatrix, y: ViewFloatMatrix, theta: ViewFloatMatrix) -> f64 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `linear_regression_gradient_descent` is never used
[INFO] [stdout]   --> src/linear_regression/mod.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn linear_regression_gradient_descent(x: ViewFloatMatrix, y: ViewFloatMatrix, mut theta: ViewMutFloatMatrix, alpha: f64, iters: usize) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process_linear_regression` is never used
[INFO] [stdout]   --> src/linear_regression/mod.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn process_linear_regression(raw_data: OwnedFloatMatrix) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid` is never used
[INFO] [stdout]  --> src/logistic_regression/mod.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn sigmoid(z: f64) -> f64 {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `logistic_regression_cost` is never used
[INFO] [stdout]  --> src/logistic_regression/mod.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn logistic_regression_cost(x: ViewFloatMatrix, y: ViewFloatMatrix, theta: ViewFloatMatrix) -> f64 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `logistic_regression_gradient_descent` is never used
[INFO] [stdout]   --> src/logistic_regression/mod.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn logistic_regression_gradient_descent(x: ViewFloatMatrix, y: ViewFloatMatrix, mut theta: ViewMutFloatMatrix, alpha: f64, iters: usi...
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `process_logistic_regression` is never used
[INFO] [stdout]   --> src/logistic_regression/mod.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn process_logistic_regression(raw_data: OwnedFloatMatrix) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `OwnedFloatMatrix` is never used
[INFO] [stdout]  --> src/process_data/mod.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub type OwnedFloatMatrix = ArrayBase<ndarray::OwnedRepr<f64>, ndarray::Dim<[usize; 2]>>;
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ViewFloatMatrix` is never used
[INFO] [stdout]  --> src/process_data/mod.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub type ViewFloatMatrix<'a> = ArrayBase<ndarray::ViewRepr<&'a f64>, ndarray::Dim<[usize; 2]>>;
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ViewMutFloatMatrix` is never used
[INFO] [stdout]   --> src/process_data/mod.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub type ViewMutFloatMatrix<'a> = ArrayBase<ndarray::ViewRepr<&'a mut f64>, ndarray::Dim<[usize; 2]>>;
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_lines` is never used
[INFO] [stdout]   --> src/process_data/mod.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_float_matrix` is never used
[INFO] [stdout]   --> src/process_data/mod.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn read_float_matrix<P>(filename: P) -> Option<OwnedFloatMatrix>
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `normolized` is never used
[INFO] [stdout]   --> src/process_data/mod.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn normolized(mut raw_data: OwnedFloatMatrix, skip_last_column: bool) -> OwnedFloatMatrix {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `plot_data` is never used
[INFO] [stdout]   --> src/process_data/mod.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn plot_data(data: ViewFloatMatrix, path: &str) -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/process_data/mod.rs:50:19
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub fn normolized(mut raw_data: OwnedFloatMatrix, skip_last_column: bool) -> OwnedFloatMatrix {
[INFO] [stdout]    |                   ----^^^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "626d24d883ce12117a55237e9d4c9a60407a1177a878e458efc7c42fa4b444d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "626d24d883ce12117a55237e9d4c9a60407a1177a878e458efc7c42fa4b444d6", kill_on_drop: false }`
[INFO] [stdout] 626d24d883ce12117a55237e9d4c9a60407a1177a878e458efc7c42fa4b444d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 691e37530f4801dd1d3d3429631cb30a618da138d669609153927dd7685a2f3d
[INFO] running `Command { std: "docker" "start" "-a" "691e37530f4801dd1d3d3429631cb30a618da138d669609153927dd7685a2f3d", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/process_data/mod.rs:50:19
[INFO] [stderr]    |
[INFO] [stderr] 50 | pub fn normolized(mut raw_data: OwnedFloatMatrix, skip_last_column: bool) -> OwnedFloatMatrix {
[INFO] [stderr]    |                   ----^^^^^^^^
[INFO] [stderr]    |                   |
[INFO] [stderr]    |                   help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-ml` (lib) generated 1 warning (run `cargo fix --lib -p rust-ml` to apply 1 suggestion)
[INFO] [stderr] warning: `rust-ml` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: unused import: `ndarray::prelude::*`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use ndarray::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `linear_regression_cost` is never used
[INFO] [stderr]  --> src/linear_regression/mod.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn linear_regression_cost(x: ViewFloatMatrix, y: ViewFloatMatrix, theta: ViewFloatMatrix) -> f64 {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `linear_regression_gradient_descent` is never used
[INFO] [stderr]   --> src/linear_regression/mod.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn linear_regression_gradient_descent(x: ViewFloatMatrix, y: ViewFloatMatrix, mut theta: ViewMutFloatMatrix, alpha: f64, iters: usize) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `process_linear_regression` is never used
[INFO] [stderr]   --> src/linear_regression/mod.rs:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn process_linear_regression(raw_data: OwnedFloatMatrix) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `sigmoid` is never used
[INFO] [stderr]  --> src/logistic_regression/mod.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn sigmoid(z: f64) -> f64 {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `logistic_regression_cost` is never used
[INFO] [stderr]  --> src/logistic_regression/mod.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn logistic_regression_cost(x: ViewFloatMatrix, y: ViewFloatMatrix, theta: ViewFloatMatrix) -> f64 {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `logistic_regression_gradient_descent` is never used
[INFO] [stderr]   --> src/logistic_regression/mod.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn logistic_regression_gradient_descent(x: ViewFloatMatrix, y: ViewFloatMatrix, mut theta: ViewMutFloatMatrix, alpha: f64, iters: usi...
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `process_logistic_regression` is never used
[INFO] [stderr]   --> src/logistic_regression/mod.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub fn process_logistic_regression(raw_data: OwnedFloatMatrix) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `OwnedFloatMatrix` is never used
[INFO] [stderr]  --> src/process_data/mod.rs:8:10
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub type OwnedFloatMatrix = ArrayBase<ndarray::OwnedRepr<f64>, ndarray::Dim<[usize; 2]>>;
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `ViewFloatMatrix` is never used
[INFO] [stderr]  --> src/process_data/mod.rs:9:10
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub type ViewFloatMatrix<'a> = ArrayBase<ndarray::ViewRepr<&'a f64>, ndarray::Dim<[usize; 2]>>;
[INFO] [stderr]   |          ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `ViewMutFloatMatrix` is never used
[INFO] [stderr]   --> src/process_data/mod.rs:10:10
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub type ViewMutFloatMatrix<'a> = ArrayBase<ndarray::ViewRepr<&'a mut f64>, ndarray::Dim<[usize; 2]>>;
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_lines` is never used
[INFO] [stderr]   --> src/process_data/mod.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn read_lines<P>(filename: P) -> io::Result<io::Lines<io::BufReader<File>>>
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `read_float_matrix` is never used
[INFO] [stderr]   --> src/process_data/mod.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn read_float_matrix<P>(filename: P) -> Option<OwnedFloatMatrix>
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `normolized` is never used
[INFO] [stderr]   --> src/process_data/mod.rs:50:8
[INFO] [stderr]    |
[INFO] [stderr] 50 | pub fn normolized(mut raw_data: OwnedFloatMatrix, skip_last_column: bool) -> OwnedFloatMatrix {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `plot_data` is never used
[INFO] [stderr]   --> src/process_data/mod.rs:62:8
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn plot_data(data: ViewFloatMatrix, path: &str) -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-ml` (bin "rust-ml" test) generated 16 warnings (1 duplicate) (run `cargo fix --bin "rust-ml" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rust_ml-cf9b58cc13a867fc)
[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] [stderr]      Running unittests src/bin/ex1.rs (/opt/rustwide/target/debug/deps/ex1-e97527424eada183)
[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] [stderr]      Running unittests src/bin/ex2.rs (/opt/rustwide/target/debug/deps/ex2-e1ae733741bd14fc)
[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] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_ml-d717c23c6a5e0166)
[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] [stderr]    Doc-tests rust_ml
[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" "691e37530f4801dd1d3d3429631cb30a618da138d669609153927dd7685a2f3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "691e37530f4801dd1d3d3429631cb30a618da138d669609153927dd7685a2f3d", kill_on_drop: false }`
[INFO] [stdout] 691e37530f4801dd1d3d3429631cb30a618da138d669609153927dd7685a2f3d