[INFO] cloning repository https://github.com/ulloacastillo/wasm-decision-tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ulloacastillo/wasm-decision-tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fulloacastillo%2Fwasm-decision-tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fulloacastillo%2Fwasm-decision-tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c218f526ad4ebfd2b28dde09554450598eddcb7a
[INFO] checking ulloacastillo/wasm-decision-tree against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fulloacastillo%2Fwasm-decision-tree" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ulloacastillo/wasm-decision-tree on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ulloacastillo/wasm-decision-tree
[INFO] finished tweaking git repo https://github.com/ulloacastillo/wasm-decision-tree
[INFO] tweaked toml for git repo https://github.com/ulloacastillo/wasm-decision-tree written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ulloacastillo/wasm-decision-tree 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e156929a7de607d46b951607b92b4f918d401cbdf5d65a6e79d36cb4e085e6b7
[INFO] running `Command { std: "docker" "start" "-a" "e156929a7de607d46b951607b92b4f918d401cbdf5d65a6e79d36cb4e085e6b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e156929a7de607d46b951607b92b4f918d401cbdf5d65a6e79d36cb4e085e6b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e156929a7de607d46b951607b92b4f918d401cbdf5d65a6e79d36cb4e085e6b7", kill_on_drop: false }`
[INFO] [stdout] e156929a7de607d46b951607b92b4f918d401cbdf5d65a6e79d36cb4e085e6b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c4e569b2560fc950518bcfe2508708e1d80536cf43b101ec82071fd6eb1bf4f
[INFO] running `Command { std: "docker" "start" "-a" "4c4e569b2560fc950518bcfe2508708e1d80536cf43b101ec82071fd6eb1bf4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.81
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bumpalo v3.10.0
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]    Compiling wasm-bindgen v0.2.81
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.81
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.81
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.81
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking wasm-dtree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `csv::Error`
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use csv::Error;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs::File;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `csv::Error`
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use csv::Error;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude`
[INFO] [stdout]  --> src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::prelude`
[INFO] [stdout]  --> src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::io::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_samples`
[INFO] [stdout]    --> src/lib.rs:113:75
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn get_best_split(&mut self, X: &Vec<Vec<f32>>, Y:  &Vec<String>, num_samples: usize, num_features: usize) -> BestSplitStruct{
[INFO] [stdout]     |                                                                           ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_samples`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n_test`
[INFO] [stdout]    --> src/lib.rs:282:9
[INFO] [stdout]     |
[INFO] [stdout] 282 |     let n_test = X.len() - n_train;
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_n_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `X_test`
[INFO] [stdout]    --> src/lib.rs:394:9
[INFO] [stdout]     |
[INFO] [stdout] 394 |     let X_test: Vec<Vec<f32>> = vec![vec![5.0,3.4,1.5,0.2], vec![4.4,2.9,1.4,0.2], vec![4.9,3.1,1.5,0.1], vec![5.6,2.9,3.6,1.3], vec![6.2...
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_X_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BestSplitStruct` is never constructed
[INFO] [stdout]   --> src/lib.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct BestSplitStruct {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `num_samples`
[INFO] [stdout]    --> src/lib.rs:113:75
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn get_best_split(&mut self, X: &Vec<Vec<f32>>, Y:  &Vec<String>, num_samples: usize, num_features: usize) -> BestSplitStruct{
[INFO] [stdout]     |                                                                           ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_num_samples`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/lib.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Node{
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 49 |     pub fn new(fi: usize, th: f32, v: String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/lib.rs:71:12
[INFO] [stdout]     |
[INFO] [stdout] 70  | impl  DecisionTreeClassifier  {
[INFO] [stdout]     | ---------------------------- associated items in this implementation
[INFO] [stdout] 71  |     pub fn new(mss: usize, md: usize) -> Self{
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79  |     pub fn build_tree(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>, curr_depth: usize) -> Option<Box<Node>>{
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 113 |     pub fn get_best_split(&mut self, X: &Vec<Vec<f32>>, Y:  &Vec<String>, num_samples: usize, num_features: usize) -> BestSplitStruct{
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 158 |     pub fn gini_index(&mut self, Y: &Vec<String>) -> f32 {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 |     pub fn split(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>, feature_index: usize, threshold: f32) -> (Vec<Vec<f32>>, Vec<Vec<f32>>, V...
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 199 |     pub fn information_gain(&mut self, parent: &Vec<String>, l_child: &Vec<String>, r_child: &Vec<String>) -> f32{
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |     pub fn calculate_leaf_value(&mut self, Y: &Vec<String> ) -> String{
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 233 |     pub fn fit(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 237 |     pub fn make_prediction(&self, X: &Vec<f32>, tree: &Option<Box<Node>>) -> String{
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 259 |     pub fn predict(&self, X: &Vec<Vec<f32>>) -> Vec<String> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `split_dataset` is never used
[INFO] [stdout]    --> src/lib.rs:280:4
[INFO] [stdout]     |
[INFO] [stdout] 280 | fn split_dataset(X: &mut Vec<Vec<f32>>, Y: &mut Vec<String>, train_size: f32) -> (Vec<Vec<f32>>,  Vec<String>, Vec<Vec<f32>>,Vec<String>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `accuracy_per_label` is never used
[INFO] [stdout]    --> src/lib.rs:315:4
[INFO] [stdout]     |
[INFO] [stdout] 315 | fn accuracy_per_label(Y: &Vec<String>, Y_hat: &Vec<String>) -> Vec<f32> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_panic_hook` is never used
[INFO] [stdout]  --> src/utils.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn set_panic_hook() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unique_vals` is never used
[INFO] [stdout]   --> src/utils.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn unique_vals(arr: &Vec<String>) -> Vec<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unique_vals_f32` is never used
[INFO] [stdout]   --> src/utils.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn unique_vals_f32(arr: &Vec<f32>) -> Vec<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_vals` is never used
[INFO] [stdout]   --> src/utils.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn count_vals(arr: &Vec<String>, label: String) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_column` is never used
[INFO] [stdout]   --> src/utils.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn get_column(matrix: &Vec<Vec<f32>>, col: usize) -> Vec<f32>{
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:79:34
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn build_tree(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>, curr_depth: usize) -> Option<Box<Node>>{
[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: variable `Y` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:79:53
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn build_tree(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>, curr_depth: usize) -> Option<Box<Node>>{
[INFO] [stdout]    |                                                     ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:113:38
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn get_best_split(&mut self, X: &Vec<Vec<f32>>, Y:  &Vec<String>, num_samples: usize, num_features: usize) -> BestSplitStruct{
[INFO] [stdout]     |                                      ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:113:57
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn get_best_split(&mut self, X: &Vec<Vec<f32>>, Y:  &Vec<String>, num_samples: usize, num_features: usize) -> BestSplitStruct{
[INFO] [stdout]     |                                                         ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:158:34
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub fn gini_index(&mut self, Y: &Vec<String>) -> f32 {
[INFO] [stdout]     |                                  ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:174:29
[INFO] [stdout]     |
[INFO] [stdout] 174 |     pub fn split(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>, feature_index: usize, threshold: f32) -> (Vec<Vec<f32>>, Vec<Vec<f32>>, V...
[INFO] [stdout]     |                             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:174:48
[INFO] [stdout]     |
[INFO] [stdout] 174 |     pub fn split(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>, feature_index: usize, threshold: f32) -> (Vec<Vec<f32>>, Vec<Vec<f32>>, V...
[INFO] [stdout]     |                                                ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:209:44
[INFO] [stdout]     |
[INFO] [stdout] 209 |     pub fn calculate_leaf_value(&mut self, Y: &Vec<String> ) -> String{
[INFO] [stdout]     |                                            ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:233:27
[INFO] [stdout]     |
[INFO] [stdout] 233 |     pub fn fit(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>) {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:233:46
[INFO] [stdout]     |
[INFO] [stdout] 233 |     pub fn fit(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>) {
[INFO] [stdout]     |                                              ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:237:35
[INFO] [stdout]     |
[INFO] [stdout] 237 |     pub fn make_prediction(&self, X: &Vec<f32>, tree: &Option<Box<Node>>) -> String{
[INFO] [stdout]     |                                   ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:259:27
[INFO] [stdout]     |
[INFO] [stdout] 259 |     pub fn predict(&self, X: &Vec<Vec<f32>>) -> Vec<String> {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:280:18
[INFO] [stdout]     |
[INFO] [stdout] 280 | fn split_dataset(X: &mut Vec<Vec<f32>>, Y: &mut Vec<String>, train_size: f32) -> (Vec<Vec<f32>>,  Vec<String>, Vec<Vec<f32>>,Vec<String>) {
[INFO] [stdout]     |                  ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:280:41
[INFO] [stdout]     |
[INFO] [stdout] 280 | fn split_dataset(X: &mut Vec<Vec<f32>>, Y: &mut Vec<String>, train_size: f32) -> (Vec<Vec<f32>>,  Vec<String>, Vec<Vec<f32>>,Vec<String>) {
[INFO] [stdout]     |                                         ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_test` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:284:13
[INFO] [stdout]     |
[INFO] [stdout] 284 |     let mut X_test: Vec<Vec<f32>> = vec![];
[INFO] [stdout]     |             ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_train` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:285:13
[INFO] [stdout]     |
[INFO] [stdout] 285 |     let mut X_train: Vec<Vec<f32>> = vec![];
[INFO] [stdout]     |             ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_train`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y_test` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:286:13
[INFO] [stdout]     |
[INFO] [stdout] 286 |     let mut Y_test: Vec<String> = vec![];
[INFO] [stdout]     |             ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `y_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y_train` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:287:13
[INFO] [stdout]     |
[INFO] [stdout] 287 |     let mut Y_train: Vec<String> = vec![];
[INFO] [stdout]     |             ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `y_train`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n_test`
[INFO] [stdout]    --> src/lib.rs:282:9
[INFO] [stdout]     |
[INFO] [stdout] 282 |     let n_test = X.len() - n_train;
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_n_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:315:23
[INFO] [stdout]     |
[INFO] [stdout] 315 | fn accuracy_per_label(Y: &Vec<String>, Y_hat: &Vec<String>) -> Vec<f32> {
[INFO] [stdout]     |                       ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y_hat` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:315:40
[INFO] [stdout]     |
[INFO] [stdout] 315 | fn accuracy_per_label(Y: &Vec<String>, Y_hat: &Vec<String>) -> Vec<f32> {
[INFO] [stdout]     |                                        ^^^^^ help: convert the identifier to snake case (notice the capitalization): `y_hat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_test` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:394:9
[INFO] [stdout]     |
[INFO] [stdout] 394 |     let X_test: Vec<Vec<f32>> = vec![vec![5.0,3.4,1.5,0.2], vec![4.4,2.9,1.4,0.2], vec![4.9,3.1,1.5,0.1], vec![5.6,2.9,3.6,1.3], vec![6.2...
[INFO] [stdout]     |         ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `X_test`
[INFO] [stdout]    --> src/lib.rs:394:9
[INFO] [stdout]     |
[INFO] [stdout] 394 |     let X_test: Vec<Vec<f32>> = vec![vec![5.0,3.4,1.5,0.2], vec![4.4,2.9,1.4,0.2], vec![4.9,3.1,1.5,0.1], vec![5.6,2.9,3.6,1.3], vec![6.2...
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_X_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BestSplitStruct` is never constructed
[INFO] [stdout]   --> src/lib.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct BestSplitStruct {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/lib.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Node{
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 49 |     pub fn new(fi: usize, th: f32, v: String) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/lib.rs:71:12
[INFO] [stdout]     |
[INFO] [stdout] 70  | impl  DecisionTreeClassifier  {
[INFO] [stdout]     | ---------------------------- associated items in this implementation
[INFO] [stdout] 71  |     pub fn new(mss: usize, md: usize) -> Self{
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 79  |     pub fn build_tree(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>, curr_depth: usize) -> Option<Box<Node>>{
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 113 |     pub fn get_best_split(&mut self, X: &Vec<Vec<f32>>, Y:  &Vec<String>, num_samples: usize, num_features: usize) -> BestSplitStruct{
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 158 |     pub fn gini_index(&mut self, Y: &Vec<String>) -> f32 {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 174 |     pub fn split(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>, feature_index: usize, threshold: f32) -> (Vec<Vec<f32>>, Vec<Vec<f32>>, V...
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 199 |     pub fn information_gain(&mut self, parent: &Vec<String>, l_child: &Vec<String>, r_child: &Vec<String>) -> f32{
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |     pub fn calculate_leaf_value(&mut self, Y: &Vec<String> ) -> String{
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 233 |     pub fn fit(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>) {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 237 |     pub fn make_prediction(&self, X: &Vec<f32>, tree: &Option<Box<Node>>) -> String{
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 259 |     pub fn predict(&self, X: &Vec<Vec<f32>>) -> Vec<String> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `split_dataset` is never used
[INFO] [stdout]    --> src/lib.rs:280:4
[INFO] [stdout]     |
[INFO] [stdout] 280 | fn split_dataset(X: &mut Vec<Vec<f32>>, Y: &mut Vec<String>, train_size: f32) -> (Vec<Vec<f32>>,  Vec<String>, Vec<Vec<f32>>,Vec<String>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `accuracy_per_label` is never used
[INFO] [stdout]    --> src/lib.rs:315:4
[INFO] [stdout]     |
[INFO] [stdout] 315 | fn accuracy_per_label(Y: &Vec<String>, Y_hat: &Vec<String>) -> Vec<f32> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `set_panic_hook` is never used
[INFO] [stdout]  --> src/utils.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn set_panic_hook() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unique_vals` is never used
[INFO] [stdout]   --> src/utils.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn unique_vals(arr: &Vec<String>) -> Vec<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unique_vals_f32` is never used
[INFO] [stdout]   --> src/utils.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn unique_vals_f32(arr: &Vec<f32>) -> Vec<f32> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_vals` is never used
[INFO] [stdout]   --> src/utils.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn count_vals(arr: &Vec<String>, label: String) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_column` is never used
[INFO] [stdout]   --> src/utils.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub fn get_column(matrix: &Vec<Vec<f32>>, col: usize) -> Vec<f32>{
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:79:34
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn build_tree(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>, curr_depth: usize) -> Option<Box<Node>>{
[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: variable `Y` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:79:53
[INFO] [stdout]    |
[INFO] [stdout] 79 |     pub fn build_tree(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>, curr_depth: usize) -> Option<Box<Node>>{
[INFO] [stdout]    |                                                     ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:113:38
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn get_best_split(&mut self, X: &Vec<Vec<f32>>, Y:  &Vec<String>, num_samples: usize, num_features: usize) -> BestSplitStruct{
[INFO] [stdout]     |                                      ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:113:57
[INFO] [stdout]     |
[INFO] [stdout] 113 |     pub fn get_best_split(&mut self, X: &Vec<Vec<f32>>, Y:  &Vec<String>, num_samples: usize, num_features: usize) -> BestSplitStruct{
[INFO] [stdout]     |                                                         ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:158:34
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub fn gini_index(&mut self, Y: &Vec<String>) -> f32 {
[INFO] [stdout]     |                                  ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:174:29
[INFO] [stdout]     |
[INFO] [stdout] 174 |     pub fn split(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>, feature_index: usize, threshold: f32) -> (Vec<Vec<f32>>, Vec<Vec<f32>>, V...
[INFO] [stdout]     |                             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:174:48
[INFO] [stdout]     |
[INFO] [stdout] 174 |     pub fn split(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>, feature_index: usize, threshold: f32) -> (Vec<Vec<f32>>, Vec<Vec<f32>>, V...
[INFO] [stdout]     |                                                ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:209:44
[INFO] [stdout]     |
[INFO] [stdout] 209 |     pub fn calculate_leaf_value(&mut self, Y: &Vec<String> ) -> String{
[INFO] [stdout]     |                                            ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 37 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:233:27
[INFO] [stdout]     |
[INFO] [stdout] 233 |     pub fn fit(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>) {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:233:46
[INFO] [stdout]     |
[INFO] [stdout] 233 |     pub fn fit(&mut self, X: &Vec<Vec<f32>>, Y: &Vec<String>) {
[INFO] [stdout]     |                                              ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:237:35
[INFO] [stdout]     |
[INFO] [stdout] 237 |     pub fn make_prediction(&self, X: &Vec<f32>, tree: &Option<Box<Node>>) -> String{
[INFO] [stdout]     |                                   ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:259:27
[INFO] [stdout]     |
[INFO] [stdout] 259 |     pub fn predict(&self, X: &Vec<Vec<f32>>) -> Vec<String> {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:280:18
[INFO] [stdout]     |
[INFO] [stdout] 280 | fn split_dataset(X: &mut Vec<Vec<f32>>, Y: &mut Vec<String>, train_size: f32) -> (Vec<Vec<f32>>,  Vec<String>, Vec<Vec<f32>>,Vec<String>) {
[INFO] [stdout]     |                  ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:280:41
[INFO] [stdout]     |
[INFO] [stdout] 280 | fn split_dataset(X: &mut Vec<Vec<f32>>, Y: &mut Vec<String>, train_size: f32) -> (Vec<Vec<f32>>,  Vec<String>, Vec<Vec<f32>>,Vec<String>) {
[INFO] [stdout]     |                                         ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_test` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:284:13
[INFO] [stdout]     |
[INFO] [stdout] 284 |     let mut X_test: Vec<Vec<f32>> = vec![];
[INFO] [stdout]     |             ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_train` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:285:13
[INFO] [stdout]     |
[INFO] [stdout] 285 |     let mut X_train: Vec<Vec<f32>> = vec![];
[INFO] [stdout]     |             ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_train`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y_test` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:286:13
[INFO] [stdout]     |
[INFO] [stdout] 286 |     let mut Y_test: Vec<String> = vec![];
[INFO] [stdout]     |             ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `y_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y_train` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:287:13
[INFO] [stdout]     |
[INFO] [stdout] 287 |     let mut Y_train: Vec<String> = vec![];
[INFO] [stdout]     |             ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `y_train`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:315:23
[INFO] [stdout]     |
[INFO] [stdout] 315 | fn accuracy_per_label(Y: &Vec<String>, Y_hat: &Vec<String>) -> Vec<f32> {
[INFO] [stdout]     |                       ^ help: convert the identifier to snake case (notice the capitalization): `y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Y_hat` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:315:40
[INFO] [stdout]     |
[INFO] [stdout] 315 | fn accuracy_per_label(Y: &Vec<String>, Y_hat: &Vec<String>) -> Vec<f32> {
[INFO] [stdout]     |                                        ^^^^^ help: convert the identifier to snake case (notice the capitalization): `y_hat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_test` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:394:9
[INFO] [stdout]     |
[INFO] [stdout] 394 |     let X_test: Vec<Vec<f32>> = vec![vec![5.0,3.4,1.5,0.2], vec![4.4,2.9,1.4,0.2], vec![4.9,3.1,1.5,0.1], vec![5.6,2.9,3.6,1.3], vec![6.2...
[INFO] [stdout]     |         ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 37 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.52s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.81
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "4c4e569b2560fc950518bcfe2508708e1d80536cf43b101ec82071fd6eb1bf4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c4e569b2560fc950518bcfe2508708e1d80536cf43b101ec82071fd6eb1bf4f", kill_on_drop: false }`
[INFO] [stdout] 4c4e569b2560fc950518bcfe2508708e1d80536cf43b101ec82071fd6eb1bf4f