[INFO] fetching crate simple_ml 0.3.2...
[INFO] checking simple_ml-0.3.2 against beta for pr-78714
[INFO] extracting crate simple_ml 0.3.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate simple_ml 0.3.2 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simple_ml 0.3.2
[INFO] finished tweaking crates.io crate simple_ml 0.3.2
[INFO] tweaked toml for crates.io crate simple_ml 0.3.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate simple_ml 0.3.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 99295728ce14db6a3130bd3241fdf71b2803b8fcca6c73e115ab0b450330b351
[INFO] running `Command { std: "docker" "start" "-a" "99295728ce14db6a3130bd3241fdf71b2803b8fcca6c73e115ab0b450330b351", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99295728ce14db6a3130bd3241fdf71b2803b8fcca6c73e115ab0b450330b351", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99295728ce14db6a3130bd3241fdf71b2803b8fcca6c73e115ab0b450330b351", kill_on_drop: false }`
[INFO] [stdout] 99295728ce14db6a3130bd3241fdf71b2803b8fcca6c73e115ab0b450330b351
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 699cc044fb5c935a0f2bb6c33446c535d40220e47e5184ae124b4d843d090741
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "699cc044fb5c935a0f2bb6c33446c535d40220e47e5184ae124b4d843d090741", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking libmath v0.2.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking simple_ml v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:1858:13
[INFO] [stdout]      |
[INFO] [stdout] 1858 | /             (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 | |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))))
[INFO] [stdout]      | |_______________________________________________________________________________________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1858 |             a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2522:13
[INFO] [stdout]      |
[INFO] [stdout] 2522 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2553:13
[INFO] [stdout]      |
[INFO] [stdout] 2553 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:3774:9
[INFO] [stdout]      |
[INFO] [stdout] 3774 |         (actual / larger as f64)
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:1858:13
[INFO] [stdout]      |
[INFO] [stdout] 1858 | /             (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 | |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))))
[INFO] [stdout]      | |_______________________________________________________________________________________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1858 |             a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2522:13
[INFO] [stdout]      |
[INFO] [stdout] 2522 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2553:13
[INFO] [stdout]      |
[INFO] [stdout] 2553 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:3774:9
[INFO] [stdout]      |
[INFO] [stdout] 3774 |         (actual / larger as f64)
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `new_mean` is never read
[INFO] [stdout]    --> src/lib.rs:877:13
[INFO] [stdout]     |
[INFO] [stdout] 877 |         let mut new_mean: Vec<Vec<f64>> = vec![];
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `new_mean` is never read
[INFO] [stdout]    --> src/lib.rs:877:13
[INFO] [stdout]     |
[INFO] [stdout] 877 |         let mut new_mean: Vec<Vec<f64>> = vec![];
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:496:13
[INFO] [stdout]     |
[INFO] [stdout] 496 |         let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:496:13
[INFO] [stdout]     |
[INFO] [stdout] 496 |         let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:1858:13
[INFO] [stdout]      |
[INFO] [stdout] 1858 | /             (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 | |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))))
[INFO] [stdout]      | |_______________________________________________________________________________________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1858 |             a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2522:13
[INFO] [stdout]      |
[INFO] [stdout] 2522 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2553:13
[INFO] [stdout]      |
[INFO] [stdout] 2553 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:3774:9
[INFO] [stdout]      |
[INFO] [stdout] 3774 |         (actual / larger as f64)
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `HashMap` is imported redundantly
[INFO] [stdout]    --> src/main.rs:567:9
[INFO] [stdout]     |
[INFO] [stdout] 3   | use std::collections::HashMap;
[INFO] [stdout]     |     ------------------------- the item `HashMap` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 567 |     use std::collections::HashMap;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:1858:13
[INFO] [stdout]      |
[INFO] [stdout] 1858 | /             (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 | |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))))
[INFO] [stdout]      | |_______________________________________________________________________________________^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1858 |             a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64))
[INFO] [stdout] 1859 |                 * (a - (actual.iter().fold(0., |a, b| a + b) / (actual.len() as f64)))
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2522:13
[INFO] [stdout]      |
[INFO] [stdout] 2522 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BTreeMap` is imported redundantly
[INFO] [stdout]     --> src/lib.rs:2553:13
[INFO] [stdout]      |
[INFO] [stdout] 2553 |         use std::collections::BTreeMap;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 3712 | use std::collections::BTreeMap;
[INFO] [stdout]      |     -------------------------- the item `BTreeMap` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/lib.rs:3774:9
[INFO] [stdout]      |
[INFO] [stdout] 3774 |         (actual / larger as f64)
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `HashMap` is imported redundantly
[INFO] [stdout]    --> src/main.rs:567:9
[INFO] [stdout]     |
[INFO] [stdout] 3   | use std::collections::HashMap;
[INFO] [stdout]     |     ------------------------- the item `HashMap` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 567 |     use std::collections::HashMap;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `weights`
[INFO] [stdout]    --> src/main.rs:960:9
[INFO] [stdout]     |
[INFO] [stdout] 960 |     let weights = svm.fit();
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_weights`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `new_mean` is never read
[INFO] [stdout]    --> src/lib.rs:877:13
[INFO] [stdout]     |
[INFO] [stdout] 877 |         let mut new_mean: Vec<Vec<f64>> = vec![];
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `weights`
[INFO] [stdout]    --> src/main.rs:960:9
[INFO] [stdout]     |
[INFO] [stdout] 960 |     let weights = svm.fit();
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_weights`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `new_mean` is never read
[INFO] [stdout]    --> src/lib.rs:877:13
[INFO] [stdout]     |
[INFO] [stdout] 877 |         let mut new_mean: Vec<Vec<f64>> = vec![];
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `impute_string`
[INFO] [stdout]     --> src/lib.rs:1401:8
[INFO] [stdout]      |
[INFO] [stdout] 1401 | pub fn impute_string<'a>(list: &'a mut Vec<String>, impute_with: &'a str) -> Vec<&'a str> {
[INFO] [stdout]      |        ^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `logistic_function_f`
[INFO] [stdout]     --> src/lib.rs:1445:8
[INFO] [stdout]      |
[INFO] [stdout] 1445 | pub fn logistic_function_f(matrix: &Vec<Vec<f64>>, beta: &Vec<Vec<f64>>) -> Vec<Vec<f64>> {
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `log_gradient_f`
[INFO] [stdout]     --> src/lib.rs:1462:8
[INFO] [stdout]      |
[INFO] [stdout] 1462 | pub fn log_gradient_f(
[INFO] [stdout]      |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `logistic_predict`
[INFO] [stdout]     --> src/lib.rs:1507:8
[INFO] [stdout]      |
[INFO] [stdout] 1507 | pub fn logistic_predict(matrix1: &Vec<Vec<f64>>, beta: &Vec<Vec<f64>>) -> Vec<Vec<f64>> {
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `best_fit_line`
[INFO] [stdout]     --> src/lib.rs:4568:8
[INFO] [stdout]      |
[INFO] [stdout] 4568 | pub fn best_fit_line(x: &Vec<f64>, y: &Vec<f64>) -> (f64, f64) {
[INFO] [stdout]      |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:496:13
[INFO] [stdout]     |
[INFO] [stdout] 496 |         let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `impute_string`
[INFO] [stdout]     --> src/lib.rs:1401:8
[INFO] [stdout]      |
[INFO] [stdout] 1401 | pub fn impute_string<'a>(list: &'a mut Vec<String>, impute_with: &'a str) -> Vec<&'a str> {
[INFO] [stdout]      |        ^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `logistic_function_f`
[INFO] [stdout]     --> src/lib.rs:1445:8
[INFO] [stdout]      |
[INFO] [stdout] 1445 | pub fn logistic_function_f(matrix: &Vec<Vec<f64>>, beta: &Vec<Vec<f64>>) -> Vec<Vec<f64>> {
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `log_gradient_f`
[INFO] [stdout]     --> src/lib.rs:1462:8
[INFO] [stdout]      |
[INFO] [stdout] 1462 | pub fn log_gradient_f(
[INFO] [stdout]      |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `logistic_predict`
[INFO] [stdout]     --> src/lib.rs:1507:8
[INFO] [stdout]      |
[INFO] [stdout] 1507 | pub fn logistic_predict(matrix1: &Vec<Vec<f64>>, beta: &Vec<Vec<f64>>) -> Vec<Vec<f64>> {
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `best_fit_line`
[INFO] [stdout]     --> src/lib.rs:4568:8
[INFO] [stdout]      |
[INFO] [stdout] 4568 | pub fn best_fit_line(x: &Vec<f64>, y: &Vec<f64>) -> (f64, f64) {
[INFO] [stdout]      |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:496:13
[INFO] [stdout]     |
[INFO] [stdout] 496 |         let X = [&b0_vec[..], &x[..]].concat(); // [1,1,1...,1,1,1]+X
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.48s
[INFO] running `Command { std: "docker" "inspect" "699cc044fb5c935a0f2bb6c33446c535d40220e47e5184ae124b4d843d090741", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "699cc044fb5c935a0f2bb6c33446c535d40220e47e5184ae124b4d843d090741", kill_on_drop: false }`
[INFO] [stdout] 699cc044fb5c935a0f2bb6c33446c535d40220e47e5184ae124b4d843d090741