[INFO] cloning repository https://github.com/DanielLacina/ml_toolkit
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DanielLacina/ml_toolkit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielLacina%2Fml_toolkit", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielLacina%2Fml_toolkit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62de577595040e16a4008a7cf45319612726a005
[INFO] testing DanielLacina/ml_toolkit against 1.97.0-beta.6 for beta-1.98-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielLacina%2Fml_toolkit" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/DanielLacina/ml_toolkit
[INFO] finished tweaking git repo https://github.com/DanielLacina/ml_toolkit
[INFO] tweaked toml for git repo https://github.com/DanielLacina/ml_toolkit written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/DanielLacina/ml_toolkit on toolchain 1.97.0-beta.6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.97.0-beta.6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/DanielLacina/ml_toolkit 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" "+1.97.0-beta.6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 6af2a9335f1db60004975327d95ad032f3f1ff1bcb4085cc2be9221ed130307e
[INFO] running `Command { std: "docker" "start" "6af2a9335f1db60004975327d95ad032f3f1ff1bcb4085cc2be9221ed130307e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6af2a9335f1db60004975327d95ad032f3f1ff1bcb4085cc2be9221ed130307e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6af2a9335f1db60004975327d95ad032f3f1ff1bcb4085cc2be9221ed130307e" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6af2a9335f1db60004975327d95ad032f3f1ff1bcb4085cc2be9221ed130307e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6af2a9335f1db60004975327d95ad032f3f1ff1bcb4085cc2be9221ed130307e" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling ml_toolkit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/dataframe/csv.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, BufReader, prelude::*};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/dataframe/dataframe.rs:55:18
[INFO] [stdout]    |
[INFO] [stdout] 55 |         for i in (values.len()..len) {
[INFO] [stdout]    |                  ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 55 -         for i in (values.len()..len) {
[INFO] [stdout] 55 +         for i in values.len()..len  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/dataframe/dataframe.rs:103:18
[INFO] [stdout]     |
[INFO] [stdout] 103 |         for i in ((column_index + 1)..self.index_to_column.len() + 1) {
[INFO] [stdout]     |                  ^                                                  ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 103 -         for i in ((column_index + 1)..self.index_to_column.len() + 1) {
[INFO] [stdout] 103 +         for i in (column_index + 1)..self.index_to_column.len() + 1  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DataTypeValue` and `DataType`
[INFO] [stdout]  --> src/pipeline/pipeline.rs:2:35
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::dataframe::{DataFrame, DataType, DataTypeValue};
[INFO] [stdout]   |                                   ^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/pipeline/polynomial_features/polynomial_features.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 for i in (2..self.degrees + 1) {
[INFO] [stdout]    |                          ^                   ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 23 -                 for i in (2..self.degrees + 1) {
[INFO] [stdout] 23 +                 for i in 2..self.degrees + 1  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/pipeline/scalars/standard_scalar.rs:27:22
[INFO] [stdout]    |
[INFO] [stdout] 27 |             for i in (0..df.len()) {
[INFO] [stdout]    |                      ^           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 27 -             for i in (0..df.len()) {
[INFO] [stdout] 27 +             for i in 0..df.len()  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/sampling/sampling.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/sampling/sampling.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 for i in (0..*num_bins) {
[INFO] [stdout]    |                          ^            ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 31 -                 for i in (0..*num_bins) {
[INFO] [stdout] 31 +                 for i in 0..*num_bins  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/sampling/sampling.rs:37:26
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 for i in (0..*num_bins) {
[INFO] [stdout]    |                          ^            ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 37 -                 for i in (0..*num_bins) {
[INFO] [stdout] 37 +                 for i in 0..*num_bins  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/sampling/sampling.rs:65:18
[INFO] [stdout]    |
[INFO] [stdout] 65 |         for i in (0..df.len()) {
[INFO] [stdout]    |                  ^           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 65 -         for i in (0..df.len()) {
[INFO] [stdout] 65 +         for i in 0..df.len()  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `converging_tolerance`
[INFO] [stdout]   --> src/algorithms/exponential_regression/exponential_regression.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let converging_tolerance = (10.0 as f32).powf(-9.0);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_converging_tolerance`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `residual` is never used
[INFO] [stdout]  --> src/algorithms/exponential_regression/utils.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn residual(x: f32, y: f32, c: f32, k: f32) -> f32 {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `strategy` is never read
[INFO] [stdout]   --> src/pipeline/imputers/imputer.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Imputer {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 12 |     strategy: ImputerStrategy,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]   --> src/algorithms/linear_regression/linear_regression.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let X = Matrix::new(
[INFO] [stdout]    |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_transpose` should have a snake case name
[INFO] [stdout]   --> src/algorithms/linear_regression/linear_regression.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let X_transpose = X.transpose();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_transpose`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_output` should have a snake case name
[INFO] [stdout]   --> src/algorithms/linear_regression/linear_regression.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut X_output = X.multiply(&X_transpose);
[INFO] [stdout]    |                 ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_output_inverse` should have a snake case name
[INFO] [stdout]   --> src/algorithms/linear_regression/linear_regression.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let X_output_inverse = X_output.inverse();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_output_inverse`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `column_names`
[INFO] [stdout]   --> src/main.rs:23:41
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn transform(&self, df: &DataFrame, column_names: &Vec<String>) -> DataFrame {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_column_names`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `Command { std: "docker" "inspect" "6af2a9335f1db60004975327d95ad032f3f1ff1bcb4085cc2be9221ed130307e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6af2a9335f1db60004975327d95ad032f3f1ff1bcb4085cc2be9221ed130307e" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling ml_toolkit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/dataframe/csv.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, BufReader, prelude::*};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/dataframe/dataframe.rs:55:18
[INFO] [stdout]    |
[INFO] [stdout] 55 |         for i in (values.len()..len) {
[INFO] [stdout]    |                  ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 55 -         for i in (values.len()..len) {
[INFO] [stdout] 55 +         for i in values.len()..len  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/dataframe/dataframe.rs:103:18
[INFO] [stdout]     |
[INFO] [stdout] 103 |         for i in ((column_index + 1)..self.index_to_column.len() + 1) {
[INFO] [stdout]     |                  ^                                                  ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 103 -         for i in ((column_index + 1)..self.index_to_column.len() + 1) {
[INFO] [stdout] 103 +         for i in (column_index + 1)..self.index_to_column.len() + 1  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DataTypeValue` and `DataType`
[INFO] [stdout]  --> src/pipeline/pipeline.rs:2:35
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::dataframe::{DataFrame, DataType, DataTypeValue};
[INFO] [stdout]   |                                   ^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/pipeline/polynomial_features/polynomial_features.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 for i in (2..self.degrees + 1) {
[INFO] [stdout]    |                          ^                   ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 23 -                 for i in (2..self.degrees + 1) {
[INFO] [stdout] 23 +                 for i in 2..self.degrees + 1  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/pipeline/scalars/standard_scalar.rs:27:22
[INFO] [stdout]    |
[INFO] [stdout] 27 |             for i in (0..df.len()) {
[INFO] [stdout]    |                      ^           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 27 -             for i in (0..df.len()) {
[INFO] [stdout] 27 +             for i in 0..df.len()  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/sampling/sampling.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/sampling/sampling.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 for i in (0..*num_bins) {
[INFO] [stdout]    |                          ^            ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 31 -                 for i in (0..*num_bins) {
[INFO] [stdout] 31 +                 for i in 0..*num_bins  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/sampling/sampling.rs:37:26
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 for i in (0..*num_bins) {
[INFO] [stdout]    |                          ^            ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 37 -                 for i in (0..*num_bins) {
[INFO] [stdout] 37 +                 for i in 0..*num_bins  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/sampling/sampling.rs:65:18
[INFO] [stdout]    |
[INFO] [stdout] 65 |         for i in (0..df.len()) {
[INFO] [stdout]    |                  ^           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 65 -         for i in (0..df.len()) {
[INFO] [stdout] 65 +         for i in 0..df.len()  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `converging_tolerance`
[INFO] [stdout]   --> src/algorithms/exponential_regression/exponential_regression.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let converging_tolerance = (10.0 as f32).powf(-9.0);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_converging_tolerance`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `residual` is never used
[INFO] [stdout]  --> src/algorithms/exponential_regression/utils.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn residual(x: f32, y: f32, c: f32, k: f32) -> f32 {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `strategy` is never read
[INFO] [stdout]   --> src/pipeline/imputers/imputer.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Imputer {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 12 |     strategy: ImputerStrategy,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]   --> src/algorithms/linear_regression/linear_regression.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let X = Matrix::new(
[INFO] [stdout]    |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_transpose` should have a snake case name
[INFO] [stdout]   --> src/algorithms/linear_regression/linear_regression.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let X_transpose = X.transpose();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_transpose`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_output` should have a snake case name
[INFO] [stdout]   --> src/algorithms/linear_regression/linear_regression.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut X_output = X.multiply(&X_transpose);
[INFO] [stdout]    |                 ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_output_inverse` should have a snake case name
[INFO] [stdout]   --> src/algorithms/linear_regression/linear_regression.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let X_output_inverse = X_output.inverse();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_output_inverse`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `column_names`
[INFO] [stdout]   --> src/main.rs:23:41
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn transform(&self, df: &DataFrame, column_names: &Vec<String>) -> DataFrame {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_column_names`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `column_names`
[INFO] [stdout]   --> src/main.rs:23:41
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn transform(&self, df: &DataFrame, column_names: &Vec<String>) -> DataFrame {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_column_names`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/dataframe/csv.rs:4:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, BufReader, prelude::*};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/dataframe/dataframe.rs:55:18
[INFO] [stdout]    |
[INFO] [stdout] 55 |         for i in (values.len()..len) {
[INFO] [stdout]    |                  ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 55 -         for i in (values.len()..len) {
[INFO] [stdout] 55 +         for i in values.len()..len  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/dataframe/dataframe.rs:103:18
[INFO] [stdout]     |
[INFO] [stdout] 103 |         for i in ((column_index + 1)..self.index_to_column.len() + 1) {
[INFO] [stdout]     |                  ^                                                  ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 103 -         for i in ((column_index + 1)..self.index_to_column.len() + 1) {
[INFO] [stdout] 103 +         for i in (column_index + 1)..self.index_to_column.len() + 1  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DataTypeValue` and `DataType`
[INFO] [stdout]  --> src/pipeline/pipeline.rs:2:35
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::dataframe::{DataFrame, DataType, DataTypeValue};
[INFO] [stdout]   |                                   ^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/pipeline/pipeline.rs:85:41
[INFO] [stdout]    |
[INFO] [stdout] 85 |             encoders::one_hot_encoder::{self, OneHotEncoder},
[INFO] [stdout]    |                                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/pipeline/polynomial_features/polynomial_features.rs:23:26
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 for i in (2..self.degrees + 1) {
[INFO] [stdout]    |                          ^                   ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 23 -                 for i in (2..self.degrees + 1) {
[INFO] [stdout] 23 +                 for i in 2..self.degrees + 1  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/pipeline/polynomial_features/polynomial_features.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |             for i in (2..degrees + 1) {
[INFO] [stdout]    |                      ^              ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 71 -             for i in (2..degrees + 1) {
[INFO] [stdout] 71 +             for i in 2..degrees + 1  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/pipeline/scalars/standard_scalar.rs:27:22
[INFO] [stdout]    |
[INFO] [stdout] 27 |             for i in (0..df.len()) {
[INFO] [stdout]    |                      ^           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 27 -             for i in (0..df.len()) {
[INFO] [stdout] 27 +             for i in 0..df.len()  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/sampling/sampling.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/sampling/sampling.rs:31:26
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 for i in (0..*num_bins) {
[INFO] [stdout]    |                          ^            ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 31 -                 for i in (0..*num_bins) {
[INFO] [stdout] 31 +                 for i in 0..*num_bins  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/sampling/sampling.rs:37:26
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 for i in (0..*num_bins) {
[INFO] [stdout]    |                          ^            ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 37 -                 for i in (0..*num_bins) {
[INFO] [stdout] 37 +                 for i in 0..*num_bins  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/sampling/sampling.rs:65:18
[INFO] [stdout]    |
[INFO] [stdout] 65 |         for i in (0..df.len()) {
[INFO] [stdout]    |                  ^           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 65 -         for i in (0..df.len()) {
[INFO] [stdout] 65 +         for i in 0..df.len()  {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `converging_tolerance`
[INFO] [stdout]   --> src/algorithms/exponential_regression/exponential_regression.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let converging_tolerance = (10.0 as f32).powf(-9.0);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_converging_tolerance`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dtype`
[INFO] [stdout]    --> src/dataframe/dataframe.rs:578:40
[INFO] [stdout]     |
[INFO] [stdout] 578 |         assert!(matches!(column_dtype, dtype));
[INFO] [stdout]     |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_dtype`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dtype`
[INFO] [stdout]    --> src/dataframe/dataframe.rs:648:14
[INFO] [stdout]     |
[INFO] [stdout] 648 |         let (dtype, _) = df.get_column(columns[0]);
[INFO] [stdout]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_dtype`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dtype`
[INFO] [stdout]    --> src/dataframe/dataframe.rs:651:40
[INFO] [stdout]     |
[INFO] [stdout] 651 |         assert!(matches!(column_dtype, dtype));
[INFO] [stdout]     |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_dtype`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `found_one` is never read
[INFO] [stdout]    --> src/pipeline/encoders/one_hot_encoder.rs:129:25
[INFO] [stdout]     |
[INFO] [stdout] 129 |                         found_one = true;
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sampling/sampling.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 118 |         let mut train_indices_sorted = {
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sampling/sampling.rs:123:13
[INFO] [stdout]     |
[INFO] [stdout] 123 |         let mut test_indices_sorted = {
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `residual` is never used
[INFO] [stdout]  --> src/algorithms/exponential_regression/utils.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn residual(x: f32, y: f32, c: f32, k: f32) -> f32 {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `strategy` is never read
[INFO] [stdout]   --> src/pipeline/imputers/imputer.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Imputer {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 12 |     strategy: ImputerStrategy,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]   --> src/algorithms/linear_regression/linear_regression.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let X = Matrix::new(
[INFO] [stdout]    |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_transpose` should have a snake case name
[INFO] [stdout]   --> src/algorithms/linear_regression/linear_regression.rs:31:13
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let X_transpose = X.transpose();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_transpose`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_output` should have a snake case name
[INFO] [stdout]   --> src/algorithms/linear_regression/linear_regression.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let mut X_output = X.multiply(&X_transpose);
[INFO] [stdout]    |                 ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_output_inverse` should have a snake case name
[INFO] [stdout]   --> src/algorithms/linear_regression/linear_regression.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let X_output_inverse = X_output.inverse();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_output_inverse`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&String` instead of cloning the inner type
[INFO] [stdout]   --> src/pipeline/scalars/standard_scalar.rs:71:33
[INFO] [stdout]    |
[INFO] [stdout] 71 |             .map(|column| column.clone().clone())
[INFO] [stdout]    |                                 ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.94s
[INFO] running `Command { std: "docker" "inspect" "6af2a9335f1db60004975327d95ad032f3f1ff1bcb4085cc2be9221ed130307e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6af2a9335f1db60004975327d95ad032f3f1ff1bcb4085cc2be9221ed130307e" "/opt/rustwide/cargo-home/bin/cargo" "+1.97.0-beta.6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/dataframe/csv.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{self, BufReader, prelude::*};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/dataframe/dataframe.rs:55:18
[INFO] [stderr]    |
[INFO] [stderr] 55 |         for i in (values.len()..len) {
[INFO] [stderr]    |                  ^                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 55 -         for i in (values.len()..len) {
[INFO] [stderr] 55 +         for i in values.len()..len  {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]    --> src/dataframe/dataframe.rs:103:18
[INFO] [stderr]     |
[INFO] [stderr] 103 |         for i in ((column_index + 1)..self.index_to_column.len() + 1) {
[INFO] [stderr]     |                  ^                                                  ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 103 -         for i in ((column_index + 1)..self.index_to_column.len() + 1) {
[INFO] [stderr] 103 +         for i in (column_index + 1)..self.index_to_column.len() + 1  {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `DataTypeValue` and `DataType`
[INFO] [stderr]  --> src/pipeline/pipeline.rs:2:35
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::dataframe::{DataFrame, DataType, DataTypeValue};
[INFO] [stderr]   |                                   ^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/pipeline/polynomial_features/polynomial_features.rs:23:26
[INFO] [stderr]    |
[INFO] [stderr] 23 |                 for i in (2..self.degrees + 1) {
[INFO] [stderr]    |                          ^                   ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 23 -                 for i in (2..self.degrees + 1) {
[INFO] [stderr] 23 +                 for i in 2..self.degrees + 1  {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/pipeline/scalars/standard_scalar.rs:27:22
[INFO] [stderr]    |
[INFO] [stderr] 27 |             for i in (0..df.len()) {
[INFO] [stderr]    |                      ^           ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 27 -             for i in (0..df.len()) {
[INFO] [stderr] 27 +             for i in 0..df.len()  {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]  --> src/sampling/sampling.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::collections::HashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/sampling/sampling.rs:31:26
[INFO] [stderr]    |
[INFO] [stderr] 31 |                 for i in (0..*num_bins) {
[INFO] [stderr]    |                          ^            ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 31 -                 for i in (0..*num_bins) {
[INFO] [stderr] 31 +                 for i in 0..*num_bins  {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/sampling/sampling.rs:37:26
[INFO] [stderr]    |
[INFO] [stderr] 37 |                 for i in (0..*num_bins) {
[INFO] [stderr]    |                          ^            ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 37 -                 for i in (0..*num_bins) {
[INFO] [stderr] 37 +                 for i in 0..*num_bins  {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/sampling/sampling.rs:65:18
[INFO] [stderr]    |
[INFO] [stderr] 65 |         for i in (0..df.len()) {
[INFO] [stderr]    |                  ^           ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 65 -         for i in (0..df.len()) {
[INFO] [stderr] 65 +         for i in 0..df.len()  {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `converging_tolerance`
[INFO] [stderr]   --> src/algorithms/exponential_regression/exponential_regression.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let converging_tolerance = (10.0 as f32).powf(-9.0);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_converging_tolerance`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `residual` is never used
[INFO] [stderr]  --> src/algorithms/exponential_regression/utils.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn residual(x: f32, y: f32, c: f32, k: f32) -> f32 {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `strategy` is never read
[INFO] [stderr]   --> src/pipeline/imputers/imputer.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub struct Imputer {
[INFO] [stderr]    |            ------- field in this struct
[INFO] [stderr] 12 |     strategy: ImputerStrategy,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]   --> src/algorithms/linear_regression/linear_regression.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |         let X = Matrix::new(
[INFO] [stderr]    |             ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_transpose` should have a snake case name
[INFO] [stderr]   --> src/algorithms/linear_regression/linear_regression.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |         let X_transpose = X.transpose();
[INFO] [stderr]    |             ^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_transpose`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_output` should have a snake case name
[INFO] [stderr]   --> src/algorithms/linear_regression/linear_regression.rs:32:17
[INFO] [stderr]    |
[INFO] [stderr] 32 |         let mut X_output = X.multiply(&X_transpose);
[INFO] [stderr]    |                 ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_output`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_output_inverse` should have a snake case name
[INFO] [stderr]   --> src/algorithms/linear_regression/linear_regression.rs:53:13
[INFO] [stderr]    |
[INFO] [stderr] 53 |         let X_output_inverse = X_output.inverse();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_output_inverse`
[INFO] [stderr] 
[INFO] [stderr] warning: `ml_toolkit` (lib) generated 17 warnings (run `cargo fix --lib -p ml_toolkit` to apply 11 suggestions)
[INFO] [stderr] warning: unused variable: `column_names`
[INFO] [stderr]   --> src/main.rs:23:41
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn transform(&self, df: &DataFrame, column_names: &Vec<String>) -> DataFrame {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_column_names`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ml_toolkit` (bin "ml_toolkit") generated 1 warning (run `cargo fix --bin "ml_toolkit" -p ml_toolkit` to apply 1 suggestion)
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]   --> src/pipeline/pipeline.rs:85:41
[INFO] [stderr]    |
[INFO] [stderr] 85 |             encoders::one_hot_encoder::{self, OneHotEncoder},
[INFO] [stderr]    |                                         ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stderr]   --> src/pipeline/polynomial_features/polynomial_features.rs:71:22
[INFO] [stderr]    |
[INFO] [stderr] 71 |             for i in (2..degrees + 1) {
[INFO] [stderr]    |                      ^              ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 71 -             for i in (2..degrees + 1) {
[INFO] [stderr] 71 +             for i in 2..degrees + 1  {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dtype`
[INFO] [stderr]    --> src/dataframe/dataframe.rs:578:40
[INFO] [stderr]     |
[INFO] [stderr] 578 |         assert!(matches!(column_dtype, dtype));
[INFO] [stderr]     |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_dtype`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dtype`
[INFO] [stderr]    --> src/dataframe/dataframe.rs:648:14
[INFO] [stderr]     |
[INFO] [stderr] 648 |         let (dtype, _) = df.get_column(columns[0]);
[INFO] [stderr]     |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_dtype`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dtype`
[INFO] [stderr]    --> src/dataframe/dataframe.rs:651:40
[INFO] [stderr]     |
[INFO] [stderr] 651 |         assert!(matches!(column_dtype, dtype));
[INFO] [stderr]     |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_dtype`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `found_one` is never read
[INFO] [stderr]    --> src/pipeline/encoders/one_hot_encoder.rs:129:25
[INFO] [stderr]     |
[INFO] [stderr] 129 |                         found_one = true;
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/sampling/sampling.rs:118:13
[INFO] [stderr]     |
[INFO] [stderr] 118 |         let mut train_indices_sorted = {
[INFO] [stderr]     |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/sampling/sampling.rs:123:13
[INFO] [stderr]     |
[INFO] [stderr] 123 |         let mut test_indices_sorted = {
[INFO] [stderr]     |             ----^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: using `.clone()` on a double reference, which returns `&String` instead of cloning the inner type
[INFO] [stderr]   --> src/pipeline/scalars/standard_scalar.rs:71:33
[INFO] [stderr]    |
[INFO] [stderr] 71 |             .map(|column| column.clone().clone())
[INFO] [stderr]    |                                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ml_toolkit` (bin "ml_toolkit" test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `ml_toolkit` (lib test) generated 26 warnings (17 duplicates) (run `cargo fix --lib -p ml_toolkit --tests` to apply 7 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ml_toolkit-827b45c761c7c12f)
[INFO] [stdout] running 35 tests
[INFO] [stdout] test dataframe::dataframe::tests::test_convert_column_values_to_string ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_divide_columns ... ok
[INFO] [stdout] test dataframe::csv::tests::test_read_from_csv ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_columns ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_columns_by_index ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_data ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_mean ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_columns_as_df ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_median ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_insert_column ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_std ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_insert_row ... ok
[INFO] [stdout] test linear_algebra::matrices::tests::test_multiply_matrix_opposite_dimensions ... ok
[INFO] [stdout] test linear_algebra::matrices::tests::test_multiply_matrix_rectangular ... ok
[INFO] [stdout] test linear_algebra::matrices::tests::test_transpose_matrix ... ok
[INFO] [stdout] test linear_algebra::matrices::tests::test_multiply_matrix ... ok
[INFO] [stdout] test linear_algebra::matrices::tests::test_inverse_matrix ... ok
[INFO] [stdout] test pipeline::scalars::standard_scalar::tests::test_std_scalar ... ok
[INFO] [stdout] test algorithms::exponential_regression::exponential_regression::tests::test_exponential_regression ... ok
[INFO] [stdout] test pipeline::polynomial_features::polynomial_features::tests::test_polynomial_features ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_divide_by_string_column - should panic ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_insert_column_invalid_values_length - should panic ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_insert_row_invalid_column - should panic ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_insert_row_not_specifying_all_columns - should panic ... ok
[INFO] [stdout] test pipeline::scalars::standard_scalar::tests::test_std_scalar_with_strings - should panic ... ok
[INFO] [stdout] test pipeline::encoders::one_hot_encoder::tests::test_df_one_hot_encoded_with_numeric_column - should panic ... ok
[INFO] [stdout] test sampling::sampling::tests::test_simple_stratified_shuffle_split ... ok
[INFO] [stdout] test sampling::sampling::tests::test_multiple_stratified_shuffle_split ... FAILED
[INFO] [stdout] test pipeline::encoders::one_hot_encoder::tests::test_df_one_hot_encoded_no_drop ... ok
[INFO] [stdout] test pipeline::encoders::one_hot_encoder::tests::test_df_one_hot_encoded_drop ... ok
[INFO] [stdout] test pipeline::imputers::imputer::tests::test_imputer ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_value_frequencies ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_df ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_bins ... ok
[INFO] [stdout] test pipeline::pipeline::tests::test_pipeline_transform ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- sampling::sampling::tests::test_multiple_stratified_shuffle_split stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'sampling::sampling::tests::test_multiple_stratified_shuffle_split' (289) panicked at src/sampling/sampling.rs:128:9:
[INFO] [stdout] assertion failed: train_indices.len() == (df.len() as f32 * (1.0 - test_size)) as usize
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x59f1e4c015c8 - std[10d71ac2c42b111e]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x59f1e4c015c8 - std[10d71ac2c42b111e]::backtrace_rs::backtrace::trace_unsynchronized::<std[10d71ac2c42b111e]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x59f1e4c015c8 - std[10d71ac2c42b111e]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x59f1e4c015c8 - <<std[10d71ac2c42b111e]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[8fb95b77d25ab6c8]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x59f1e4c1658a - <core[8fb95b77d25ab6c8]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x59f1e4c1658a - core[8fb95b77d25ab6c8]::fmt::write
[INFO] [stdout]    6:     0x59f1e4c05de2 - std[10d71ac2c42b111e]::io::default_write_fmt::<alloc[a7ee25936407c584]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/io/mod.rs:622:11
[INFO] [stdout]    7:     0x59f1e4c05de2 - <alloc[a7ee25936407c584]::vec::Vec<u8> as std[10d71ac2c42b111e]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/io/mod.rs:1977:13
[INFO] [stdout]    8:     0x59f1e4be0786 - <std[10d71ac2c42b111e]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x59f1e4be0786 - std[10d71ac2c42b111e]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x59f1e4bf9b19 - std[10d71ac2c42b111e]::panicking::default_hook
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x59f1e4b95bcc - <alloc[a7ee25936407c584]::boxed::Box<dyn for<'a, 'b> core[8fb95b77d25ab6c8]::ops::function::Fn<(&'a std[10d71ac2c42b111e]::panic::PanicHookInfo<'b>,), Output = ()> + core[8fb95b77d25ab6c8]::marker::Sync + core[8fb95b77d25ab6c8]::marker::Send> as core[8fb95b77d25ab6c8]::ops::function::Fn<(&std[10d71ac2c42b111e]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/alloc/src/boxed.rs:2289:9
[INFO] [stdout]   12:     0x59f1e4b95bcc - test[213991da798b1c03]::test_main_inner::<test[213991da798b1c03]::test_main_static::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:155:21
[INFO] [stdout]   13:     0x59f1e4bf9cd2 - <alloc[a7ee25936407c584]::boxed::Box<dyn for<'a, 'b> core[8fb95b77d25ab6c8]::ops::function::Fn<(&'a std[10d71ac2c42b111e]::panic::PanicHookInfo<'b>,), Output = ()> + core[8fb95b77d25ab6c8]::marker::Sync + core[8fb95b77d25ab6c8]::marker::Send> as core[8fb95b77d25ab6c8]::ops::function::Fn<(&std[10d71ac2c42b111e]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/alloc/src/boxed.rs:2289:9
[INFO] [stdout]   14:     0x59f1e4bf9cd2 - std[10d71ac2c42b111e]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x59f1e4be0874 - std[10d71ac2c42b111e]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:691:13
[INFO] [stdout]   16:     0x59f1e4bd5a49 - std[10d71ac2c42b111e]::sys::backtrace::__rust_end_short_backtrace::<std[10d71ac2c42b111e]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x59f1e4be155d - __rustc[3be9ba60078d4c86]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x59f1e4c16cdc - core[8fb95b77d25ab6c8]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x59f1e4c16ca2 - core[8fb95b77d25ab6c8]::panicking::panic
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panicking.rs:150:5
[INFO] [stdout]   20:     0x59f1e4b74ff7 - ml_toolkit[77f4be3bb1e01f4f]::sampling::sampling::tests::test_stratified_shuffle_split
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sampling/sampling.rs:128:9
[INFO] [stdout]   21:     0x59f1e4b757b3 - ml_toolkit[77f4be3bb1e01f4f]::sampling::sampling::tests::test_multiple_stratified_shuffle_split
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sampling/sampling.rs:157:9
[INFO] [stdout]   22:     0x59f1e4b6ef87 - ml_toolkit[77f4be3bb1e01f4f]::sampling::sampling::tests::test_multiple_stratified_shuffle_split::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sampling/sampling.rs:152:48
[INFO] [stdout]   23:     0x59f1e4b7d4e6 - <ml_toolkit[77f4be3bb1e01f4f]::sampling::sampling::tests::test_multiple_stratified_shuffle_split::{closure#0} as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x59f1e4b88cab - <fn() -> core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x59f1e4b88cab - test[213991da798b1c03]::__rust_begin_short_backtrace::<core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>, fn() -> core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>>
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:724:18
[INFO] [stdout]   26:     0x59f1e4b96525 - test[213991da798b1c03]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:747:74
[INFO] [stdout]   27:     0x59f1e4b96525 - <core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   28:     0x59f1e4b96525 - std[10d71ac2c42b111e]::panicking::catch_unwind::do_call::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}>, core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>>
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x59f1e4b96525 - std[10d71ac2c42b111e]::panicking::catch_unwind::<core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>, core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x59f1e4b96525 - std[10d71ac2c42b111e]::panic::catch_unwind::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<test[213991da798b1c03]::run_test_in_process::{closure#0}>, core[8fb95b77d25ab6c8]::result::Result<(), alloc[a7ee25936407c584]::string::String>>
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x59f1e4b96525 - test[213991da798b1c03]::run_test_in_process
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:747:27
[INFO] [stdout]   32:     0x59f1e4b96525 - test[213991da798b1c03]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:668:43
[INFO] [stdout]   33:     0x59f1e4b8fe34 - test[213991da798b1c03]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/test/src/lib.rs:698:41
[INFO] [stdout]   34:     0x59f1e4b8fe34 - std[10d71ac2c42b111e]::sys::backtrace::__rust_begin_short_backtrace::<test[213991da798b1c03]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x59f1e4b995a2 - std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked::<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   36:     0x59f1e4b995a2 - <core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   37:     0x59f1e4b995a2 - std[10d71ac2c42b111e]::panicking::catch_unwind::do_call::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x59f1e4b995a2 - std[10d71ac2c42b111e]::panicking::catch_unwind::<(), core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x59f1e4b995a2 - std[10d71ac2c42b111e]::panic::catch_unwind::<core[8fb95b77d25ab6c8]::panic::unwind_safe::AssertUnwindSafe<std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x59f1e4b995a2 - std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked::<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   41:     0x59f1e4b995a2 - <std[10d71ac2c42b111e]::thread::lifecycle::spawn_unchecked<test[213991da798b1c03]::run_test::{closure#1}, ()>::{closure#1} as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x59f1e4c00f2f - <alloc[a7ee25936407c584]::boxed::Box<dyn core[8fb95b77d25ab6c8]::ops::function::FnOnce<(), Output = ()> + core[8fb95b77d25ab6c8]::marker::Send> as core[8fb95b77d25ab6c8]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/alloc/src/boxed.rs:2275:9
[INFO] [stdout]   43:     0x59f1e4c00f2f - <std[10d71ac2c42b111e]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/b2282dd5646a57d570fc86fbe8df0e8826665ef6/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   44:     0x735d543b3aa4 - <unknown>
[INFO] [stdout]   45:     0x735d54440a64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     sampling::sampling::tests::test_multiple_stratified_shuffle_split
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 34 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.70s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "6af2a9335f1db60004975327d95ad032f3f1ff1bcb4085cc2be9221ed130307e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6af2a9335f1db60004975327d95ad032f3f1ff1bcb4085cc2be9221ed130307e", kill_on_drop: false }`
[INFO] [stdout] 6af2a9335f1db60004975327d95ad032f3f1ff1bcb4085cc2be9221ed130307e
