[INFO] cloning repository https://github.com/kyunghyunHan/machine_learning_tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kyunghyunHan/machine_learning_tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkyunghyunHan%2Fmachine_learning_tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkyunghyunHan%2Fmachine_learning_tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f344c5a3451eab6d8ef4516b4e860174d1e3577c
[INFO] checking kyunghyunHan/machine_learning_tutorial against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FkyunghyunHan%2Fmachine_learning_tutorial" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kyunghyunHan/machine_learning_tutorial on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kyunghyunHan/machine_learning_tutorial
[INFO] finished tweaking git repo https://github.com/kyunghyunHan/machine_learning_tutorial
[INFO] tweaked toml for git repo https://github.com/kyunghyunHan/machine_learning_tutorial written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kyunghyunHan/machine_learning_tutorial 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" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "a758914035800954eb4329c5e73fcd1f1cde606e0f4c31c83885c30177fdb567", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "2fcacee402111d011ac96e89783e607e8f7287fc14463e52cc79c0f08a615e91", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `chart::matshow`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use chart::matshow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `polars::prelude::cov::pearson_corr`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use polars::prelude::cov::pearson_corr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cross_validate`
[INFO] [stdout]  --> src/ml/grid_search_cv.rs:1:40
[INFO] [stdout]   |
[INFO] [stdout] 1 | use smartcore::model_selection::{KFold,cross_validate};
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chart::matshow`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use chart::matshow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smartcore::metrics::accuracy`
[INFO] [stdout]  --> src/ml/grid_search_cv.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use smartcore::metrics::accuracy;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smartcore::linear::logistic_regression::LogisticRegression`
[INFO] [stdout]  --> src/ml/grid_search_cv.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use smartcore::linear::logistic_regression::LogisticRegression;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `polars::prelude::cov::pearson_corr`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use polars::prelude::cov::pearson_corr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smartcore::api::SupervisedEstimator`
[INFO] [stdout]  --> src/ml/grid_search_cv.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use smartcore::api::SupervisedEstimator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cross_validate`
[INFO] [stdout]  --> src/ml/grid_search_cv.rs:1:40
[INFO] [stdout]   |
[INFO] [stdout] 1 | use smartcore::model_selection::{KFold,cross_validate};
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `docs::lazy`
[INFO] [stdout]  --> src/sql/sql_connect.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use polars::{prelude::*, docs::lazy};
[INFO] [stdout]   |                          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smartcore::metrics::accuracy`
[INFO] [stdout]  --> src/ml/grid_search_cv.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use smartcore::metrics::accuracy;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smartcore::linear::logistic_regression::LogisticRegression`
[INFO] [stdout]  --> src/ml/grid_search_cv.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use smartcore::linear::logistic_regression::LogisticRegression;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `clone`
[INFO] [stdout]  --> src/sql/sql_connect.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{convert::TryFrom, clone};
[INFO] [stdout]   |                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smartcore::api::SupervisedEstimator`
[INFO] [stdout]  --> src/ml/grid_search_cv.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use smartcore::api::SupervisedEstimator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `polars::prelude::*`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use polars::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `docs::lazy`
[INFO] [stdout]  --> src/sql/sql_connect.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use polars::{prelude::*, docs::lazy};
[INFO] [stdout]   |                          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `clone`
[INFO] [stdout]  --> src/sql/sql_connect.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{convert::TryFrom, clone};
[INFO] [stdout]   |                             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `polars::prelude::*`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use polars::prelude::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::ymd`: use `with_ymd_and_hms()` instead
[INFO] [stdout]  --> src/chart/time_series.rs:9:25
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let start_date= Utc.ymd(2019, 10, 1);
[INFO] [stdout]   |                         ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::ymd`: use `with_ymd_and_hms()` instead
[INFO] [stdout]  --> src/chart/time_series.rs:9:25
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let start_date= Utc.ymd(2019, 10, 1);
[INFO] [stdout]   |                         ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::ymd`: use `with_ymd_and_hms()` instead
[INFO] [stdout]   --> src/chart/time_series.rs:10:24
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let end_date = Utc.ymd(2019, 10, 18);
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::ymd`: use `with_ymd_and_hms()` instead
[INFO] [stdout]   --> src/chart/time_series.rs:10:24
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let end_date = Utc.ymd(2019, 10, 18);
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::ymd`: use `with_ymd_and_hms()` instead
[INFO] [stdout]   --> src/chart/time_series.rs:22:32
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 let date = Utc.ymd(2019,10, day);
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::ymd`: use `with_ymd_and_hms()` instead
[INFO] [stdout]   --> src/chart/time_series.rs:22:32
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 let date = Utc.ymd(2019,10, day);
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude`
[INFO] [stdout]  --> src/sql/sql_connect.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use polars::{prelude::*, docs::lazy};
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude`
[INFO] [stdout]  --> src/sql/sql_connect.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use polars::{prelude::*, docs::lazy};
[INFO] [stdout]   |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_axis`
[INFO] [stdout]  --> src/chart/chart04.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let x_axis = (-3.4f32..3.4).step(0.1);
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_axis`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_axis`
[INFO] [stdout]  --> src/chart/chart04.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let x_axis = (-3.4f32..3.4).step(0.1);
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_axis`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_axis`
[INFO] [stdout]  --> src/chart/linear_function.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let x_axis = (-3.4f32..3.4).step(0.1);
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_axis`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_axis`
[INFO] [stdout]  --> src/chart/linear_function.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let x_axis = (-3.4f32..3.4).step(0.1);
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_x_axis`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `acc`
[INFO] [stdout]   --> src/fish/fish01.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let acc: f64 = ClassificationMetricsOrd::accuracy().get_score(&test_target, &y_pred);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_acc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `acc`
[INFO] [stdout]   --> src/fish/fish01.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let acc: f64 = ClassificationMetricsOrd::accuracy().get_score(&test_target, &y_pred);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_acc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/ml/grid_search_cv.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     x:&DenseMatrix<f64>,
[INFO] [stdout]   |     ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/ml/grid_search_cv.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     y:&Vec<i32>,
[INFO] [stdout]    |     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]  --> src/ml/grid_search_cv.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     x:&DenseMatrix<f64>,
[INFO] [stdout]   |     ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `param_grid`
[INFO] [stdout]   --> src/ml/grid_search_cv.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     param_grid:Vec<(f64,f64)>,
[INFO] [stdout]    |     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_param_grid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/ml/grid_search_cv.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     y:&Vec<i32>,
[INFO] [stdout]    |     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cv`
[INFO] [stdout]   --> src/ml/grid_search_cv.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     cv:&KFold
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_cv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `param_grid`
[INFO] [stdout]   --> src/ml/grid_search_cv.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     param_grid:Vec<(f64,f64)>,
[INFO] [stdout]    |     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_param_grid`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ml/grid_search_cv.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |    let mut best_score= 0.0;
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/ml/grid_search_cv.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |    let mut best_params= (0.0,0.0);
[INFO] [stdout]    |        ----^^^^^^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cv`
[INFO] [stdout]   --> src/ml/grid_search_cv.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     cv:&KFold
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_cv`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ml/grid_search_cv.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |    let mut best_score= 0.0;
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/ml/grid_search_cv.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |    let mut best_params= (0.0,0.0);
[INFO] [stdout]    |        ----^^^^^^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ndarray`
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | let ndarray: ArrayBase<ndarray::OwnedRepr<f64>, Dim<[usize; 2]>> = df_agg.to_ndarray::<Float64Type>(IndexOrder::Fortran).unwrap();
[INFO] [stdout]    |     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ndarray`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dataset`
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | let dataset= Dataset::new(fish_data,arr);
[INFO] [stdout]    |     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dataset`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ndarray`
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | let ndarray: ArrayBase<ndarray::OwnedRepr<f64>, Dim<[usize; 2]>> = df_agg.to_ndarray::<Float64Type>(IndexOrder::Fortran).unwrap();
[INFO] [stdout]    |     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ndarray`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 | let a: f64= pearson_corr(s0.clone().u16().unwrap(), s1.clone().u16().unwrap(), 1).unwrap();
[INFO] [stdout]    |     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dataset`
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | let dataset= Dataset::new(fish_data,arr);
[INFO] [stdout]    |     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_dataset`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `df`
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | let df: DataFrame= df.clone().lazy().with_columns([cov(col("1"), col("2"), 1).alias("col4")]).collect().unwrap();
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_df`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 | let a: f64= pearson_corr(s0.clone().u16().unwrap(), s1.clone().u16().unwrap(), 1).unwrap();
[INFO] [stdout]    |     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `df`
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 | let df: DataFrame= df.clone().lazy().with_columns([cov(col("1"), col("2"), 1).alias("col4")]).collect().unwrap();
[INFO] [stdout]    |     ^^ help: if this is intentional, prefix it with an underscore: `_df`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 64 | let data = vec![
[INFO] [stdout]    |     ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 64 | let data = vec![
[INFO] [stdout]    |     ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | let a: f64= pearson_corr(s0.clone().u16().unwrap(), s1.clone().u16().unwrap(), 1).unwrap();
[INFO] [stdout]    |     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | let a: f64= pearson_corr(s0.clone().u16().unwrap(), s1.clone().u16().unwrap(), 1).unwrap();
[INFO] [stdout]    |     ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:54:6
[INFO] [stdout]    |
[INFO] [stdout] 54 | let  mut fish_data = stack![Axis(1), length, weight];
[INFO] [stdout]    |      ----^^^^^^^^^
[INFO] [stdout]    |      |
[INFO] [stdout]    |      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:54:6
[INFO] [stdout]    |
[INFO] [stdout] 54 | let  mut fish_data = stack![Axis(1), length, weight];
[INFO] [stdout]    |      ----^^^^^^^^^
[INFO] [stdout]    |      |
[INFO] [stdout]    |      help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 | let mut s0 = Series::new("col1", [1,2,3,4,5,6].as_ref());
[INFO] [stdout]    |     ----^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 | let mut s0 = Series::new("col1", [1,2,3,4,5,6].as_ref());
[INFO] [stdout]    |     ----^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/chart01.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/chart02.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/chart02.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/chart01.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/chart02.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/chart02.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/chart02.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/chart03.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const OUT_FILE_NAME: &str = "./src/chart/chart03.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/chart02.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/chart03.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn main(){
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/chart03.rs:2:7
[INFO] [stdout]   |
[INFO] [stdout] 2 | const OUT_FILE_NAME: &str = "./src/chart/chart03.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/chart04.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const OUT_FILE_NAME: &str = "./src/chart/chart04.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/chart03.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn main(){
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/chart04.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const OUT_FILE_NAME: &str = "./src/chart/chart04.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/chart04.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main(){
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/chart04.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main(){
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/linear_function.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const OUT_FILE_NAME: &str = "./src/chart/liner_function.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/linear_function.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const OUT_FILE_NAME: &str = "./src/chart/liner_function.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/linear_function.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main(){
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/step_function.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/step_function.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/linear_function.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main(){
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/step_function.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/sigmoid_function.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/sigmoid_function.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/step_function.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/step_function.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/sigmoid_function.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/step_function.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/tanh_function.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/tanh_function.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/sigmoid_function.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/sigmoid_function.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/tanh_function.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/sigmoid_function.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/relu_function.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/relu_function.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/tanh_function.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/tanh_function.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/relu_function.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/sign_function.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/sign_function.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/tanh_function.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/sign_function.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/relu_function.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/relu_function.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/time_series.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/time_series.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/relu_function.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/time_series.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main(){
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/sign_function.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/sign_function.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/matshow.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/matshow.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/sign_function.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/matshow.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/time_series.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/time_series.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/ds_note/ds_note01.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn main(){
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/time_series.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main(){
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/fish/fish01.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn main(){
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OUT_FILE_NAME` is never used
[INFO] [stdout]  --> src/chart/matshow.rs:3:7
[INFO] [stdout]   |
[INFO] [stdout] 3 | const OUT_FILE_NAME: &str = "./src/chart/matshow.png";
[INFO] [stdout]   |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/fish/wine01.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub  fn main(){
[INFO] [stdout]   |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/chart/matshow.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn main() {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `grid_search_cv` is never used
[INFO] [stdout]  --> src/ml/grid_search_cv.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn grid_search_cv(
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/ds_note/ds_note01.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn main(){
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/ml/grid_search_cv.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn main(){
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/fish/fish01.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn main(){
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn main(){
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/fish/wine01.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub  fn main(){
[INFO] [stdout]   |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MySql` is never constructed
[INFO] [stdout]  --> src/sql/sql_connect.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct MySql{
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `grid_search_cv` is never used
[INFO] [stdout]  --> src/ml/grid_search_cv.rs:8:4
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn grid_search_cv(
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/sql/sql_connect.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn main(){
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/ml/grid_search_cv.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn main(){
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/polars_ch/polars_ch01.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn main(){
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MySql` is never constructed
[INFO] [stdout]  --> src/sql/sql_connect.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct MySql{
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/sql/sql_connect.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn main(){
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 61 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 61 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.04s
[INFO] running `Command { std: "docker" "inspect" "2fcacee402111d011ac96e89783e607e8f7287fc14463e52cc79c0f08a615e91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fcacee402111d011ac96e89783e607e8f7287fc14463e52cc79c0f08a615e91", kill_on_drop: false }`
[INFO] [stdout] 2fcacee402111d011ac96e89783e607e8f7287fc14463e52cc79c0f08a615e91