[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 beta-2026-01-20 for beta-1.94-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielLacina%2Fml_toolkit" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/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-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/DanielLacina/ml_toolkit on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "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" "+beta-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf16d9370d4995ebb168e88ca90253ec3155497305d286d095b059aa99159ef0
[INFO] running `Command { std: "docker" "start" "-a" "cf16d9370d4995ebb168e88ca90253ec3155497305d286d095b059aa99159ef0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf16d9370d4995ebb168e88ca90253ec3155497305d286d095b059aa99159ef0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf16d9370d4995ebb168e88ca90253ec3155497305d286d095b059aa99159ef0", kill_on_drop: false }`
[INFO] [stdout] cf16d9370d4995ebb168e88ca90253ec3155497305d286d095b059aa99159ef0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5e15781d6d7005cfdabf430e4d97c78f3520314b3da910bdfe045b5f9707a0f
[INFO] running `Command { std: "docker" "start" "-a" "d5e15781d6d7005cfdabf430e4d97c78f3520314b3da910bdfe045b5f9707a0f", 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 1.87s
[INFO] running `Command { std: "docker" "inspect" "d5e15781d6d7005cfdabf430e4d97c78f3520314b3da910bdfe045b5f9707a0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5e15781d6d7005cfdabf430e4d97c78f3520314b3da910bdfe045b5f9707a0f", kill_on_drop: false }`
[INFO] [stdout] d5e15781d6d7005cfdabf430e4d97c78f3520314b3da910bdfe045b5f9707a0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 32c5efe3aa268255643eef43dcd80cba2968c7000cb2bd33bcf71bea22280933
[INFO] running `Command { std: "docker" "start" "-a" "32c5efe3aa268255643eef43dcd80cba2968c7000cb2bd33bcf71bea22280933", 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 2.24s
[INFO] running `Command { std: "docker" "inspect" "32c5efe3aa268255643eef43dcd80cba2968c7000cb2bd33bcf71bea22280933", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32c5efe3aa268255643eef43dcd80cba2968c7000cb2bd33bcf71bea22280933", kill_on_drop: false }`
[INFO] [stdout] 32c5efe3aa268255643eef43dcd80cba2968c7000cb2bd33bcf71bea22280933
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] afb046c866b854c62512c1e77f12192eaffa7aecf68d1ad96a543aa0b2b508bc
[INFO] running `Command { std: "docker" "start" "-a" "afb046c866b854c62512c1e77f12192eaffa7aecf68d1ad96a543aa0b2b508bc", 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 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ml_toolkit-827b45c761c7c12f)
[INFO] [stdout] 
[INFO] [stdout] running 35 tests
[INFO] [stdout] test dataframe::dataframe::tests::test_divide_columns ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_convert_column_values_to_string ... 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_as_df ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_mean ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_std ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_columns_by_index ... ok
[INFO] [stdout] test linear_algebra::matrices::tests::test_inverse_matrix ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_insert_column ... ok
[INFO] [stdout] test linear_algebra::matrices::tests::test_multiply_matrix ... 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 dataframe::dataframe::tests::test_insert_row ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_data ... ok
[INFO] [stdout] test pipeline::polynomial_features::polynomial_features::tests::test_polynomial_features ... 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 dataframe::dataframe::tests::test_get_median ... ok
[INFO] [stdout] test sampling::sampling::tests::test_simple_stratified_shuffle_split ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_divide_by_string_column - should panic ... ok
[INFO] [stdout] test pipeline::encoders::one_hot_encoder::tests::test_df_one_hot_encoded_no_drop ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_value_frequencies ... 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 dataframe::dataframe::tests::test_insert_column_invalid_values_length - should panic ... ok
[INFO] [stdout] test sampling::sampling::tests::test_multiple_stratified_shuffle_split ... FAILED
[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 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_bins ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_df ... ok
[INFO] [stdout] test pipeline::pipeline::tests::test_pipeline_transform ... ok
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[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' (57) 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:     0x5aa94b2cc092 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5aa94b2cc092 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5aa94b2cc092 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5aa94b2cc092 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5aa94b2dce5a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5aa94b2dce5a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x5aa94b29b016 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5aa94b29b016 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x5aa94b2ab579 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5aa94b2ab579 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5aa94b2ab411 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x5aa94b26fabe - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x5aa94b26fabe - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5aa94b2ab7f2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x5aa94b2ab7f2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x5aa94b2ab66a - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:691:13
[INFO] [stdout]   16:     0x5aa94b2a6bc9 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x5aa94b28fc0d - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x5aa94b2e577c - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5aa94b2e5742 - core::panicking::panic::h6519d2e94a76dd19
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:150:5
[INFO] [stdout]   20:     0x5aa94b22c407 - ml_toolkit::sampling::sampling::tests::test_stratified_shuffle_split::h531425defe25e658
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sampling/sampling.rs:128:9
[INFO] [stdout]   21:     0x5aa94b22caf5 - ml_toolkit::sampling::sampling::tests::test_multiple_stratified_shuffle_split::hc2394de71a1e04bf
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sampling/sampling.rs:157:9
[INFO] [stdout]   22:     0x5aa94b22cb67 - ml_toolkit::sampling::sampling::tests::test_multiple_stratified_shuffle_split::{{closure}}::hecea687bdcaeabf9
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sampling/sampling.rs:152:48
[INFO] [stdout]   23:     0x5aa94b22dc06 - core::ops::function::FnOnce::call_once::h31d068b3e200e89f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5aa94b26f8bb - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x5aa94b26f8bb - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x5aa94b28328a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x5aa94b28328a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x5aa94b28328a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x5aa94b28328a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x5aa94b28328a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x5aa94b28328a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x5aa94b28328a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x5aa94b25d6e4 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x5aa94b25d6e4 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x5aa94b260fa2 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x5aa94b260fa2 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x5aa94b260fa2 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x5aa94b260fa2 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x5aa94b260fa2 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x5aa94b260fa2 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x5aa94b260fa2 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x5aa94b2a1e5f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x5aa94b2a1e5f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x7815fe3a4aa4 - <unknown>
[INFO] [stdout]   45:     0x7815fe431a64 - 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 0.77s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "afb046c866b854c62512c1e77f12192eaffa7aecf68d1ad96a543aa0b2b508bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afb046c866b854c62512c1e77f12192eaffa7aecf68d1ad96a543aa0b2b508bc", kill_on_drop: false }`
[INFO] [stdout] afb046c866b854c62512c1e77f12192eaffa7aecf68d1ad96a543aa0b2b508bc
