[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 master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanielLacina%2Fml_toolkit" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-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-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/DanielLacina/ml_toolkit on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46969667a6f1b994efe63e9cc5914db8575e88bc3a21c209a8eb1a78a197ef13
[INFO] running `Command { std: "docker" "start" "-a" "46969667a6f1b994efe63e9cc5914db8575e88bc3a21c209a8eb1a78a197ef13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46969667a6f1b994efe63e9cc5914db8575e88bc3a21c209a8eb1a78a197ef13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46969667a6f1b994efe63e9cc5914db8575e88bc3a21c209a8eb1a78a197ef13", kill_on_drop: false }`
[INFO] [stdout] 46969667a6f1b994efe63e9cc5914db8575e88bc3a21c209a8eb1a78a197ef13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61e9390cb2d81dbd4d5417c5d5f78a00ce55f3a3c9c3eb5f7a3596b086f3b4f3
[INFO] running `Command { std: "docker" "start" "-a" "61e9390cb2d81dbd4d5417c5d5f78a00ce55f3a3c9c3eb5f7a3596b086f3b4f3", 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)]` 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)]` 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)]` 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)]` 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)]` 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.84s
[INFO] running `Command { std: "docker" "inspect" "61e9390cb2d81dbd4d5417c5d5f78a00ce55f3a3c9c3eb5f7a3596b086f3b4f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61e9390cb2d81dbd4d5417c5d5f78a00ce55f3a3c9c3eb5f7a3596b086f3b4f3", kill_on_drop: false }`
[INFO] [stdout] 61e9390cb2d81dbd4d5417c5d5f78a00ce55f3a3c9c3eb5f7a3596b086f3b4f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 867fe5aa8b327bc4fff94246c27c4d4bc096c2cfedcb54adff9171cf9d5baff2
[INFO] running `Command { std: "docker" "start" "-a" "867fe5aa8b327bc4fff94246c27c4d4bc096c2cfedcb54adff9171cf9d5baff2", kill_on_drop: false }`
[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)]` 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)]` 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] [stderr]    Compiling ml_toolkit v0.1.0 (/opt/rustwide/workdir)
[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)]` 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)]` 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)]` 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)]` 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)]` 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)]` 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: `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)]` on by default
[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)]` 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)]` 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)]` 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)]` 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)]` 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 9.13s
[INFO] running `Command { std: "docker" "inspect" "867fe5aa8b327bc4fff94246c27c4d4bc096c2cfedcb54adff9171cf9d5baff2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "867fe5aa8b327bc4fff94246c27c4d4bc096c2cfedcb54adff9171cf9d5baff2", kill_on_drop: false }`
[INFO] [stdout] 867fe5aa8b327bc4fff94246c27c4d4bc096c2cfedcb54adff9171cf9d5baff2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c72f1dcac423070668bdf9f587dfc37e6f4cef6921fc668984aa7f12bcaa7910
[INFO] running `Command { std: "docker" "start" "-a" "c72f1dcac423070668bdf9f587dfc37e6f4cef6921fc668984aa7f12bcaa7910", 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)]` 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)]` 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)]` 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)]` 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)]` 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 10 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)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ml_toolkit` (bin "ml_toolkit") generated 1 warning
[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)]` 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)]` 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 4 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ml_toolkit-0be1798d5c36e7da)
[INFO] [stdout] 
[INFO] [stdout] running 35 tests
[INFO] [stdout] test dataframe::csv::tests::test_read_from_csv ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_convert_column_values_to_string ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_columns ... ok
[INFO] [stdout] test algorithms::exponential_regression::exponential_regression::tests::test_exponential_regression ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_columns_by_index ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_columns_as_df ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_std ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_data ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_insert_column ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_median ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_insert_row ... ok
[INFO] [stdout] test linear_algebra::matrices::tests::test_transpose_matrix ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_mean ... ok
[INFO] [stdout] test linear_algebra::matrices::tests::test_inverse_matrix ... ok
[INFO] [stdout] test linear_algebra::matrices::tests::test_multiply_matrix_opposite_dimensions ... 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 linear_algebra::matrices::tests::test_multiply_matrix_rectangular ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_divide_columns ... ok
[INFO] [stdout] test sampling::sampling::tests::test_simple_stratified_shuffle_split ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_value_frequencies ... ok
[INFO] [stdout] test linear_algebra::matrices::tests::test_multiply_matrix ... 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_df ... ok
[INFO] [stdout] test pipeline::encoders::one_hot_encoder::tests::test_df_one_hot_encoded_drop ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_get_bins ... ok
[INFO] [stdout] test pipeline::imputers::imputer::tests::test_imputer ... 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_not_specifying_all_columns - should panic ... ok
[INFO] [stdout] test dataframe::dataframe::tests::test_insert_row_invalid_column - should panic ... ok
[INFO] [stdout] test pipeline::scalars::standard_scalar::tests::test_std_scalar_with_strings - should panic ... 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_with_numeric_column - should panic ... 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' 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:     0x6074bb97c4d2 - std::backtrace_rs::backtrace::libunwind::trace::hd39b1f53d3cf9745
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x6074bb97c4d2 - std::backtrace_rs::backtrace::trace_unsynchronized::he91d9a75d4e3972b
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x6074bb97c4d2 - std::sys::backtrace::_print_fmt::hca46938f8c6e22cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x6074bb97c4d2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::ha499add612cccf8e
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x6074bb9a2f13 - core::fmt::rt::Argument::fmt::hd21145b75a833b7a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x6074bb9a2f13 - core::fmt::write::hb10c956f5235c8a4
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/mod.rs:1465:25
[INFO] [stdout]    6:     0x6074bb9796b3 - std::io::default_write_fmt::hdb7615052be2ba4d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x6074bb9796b3 - std::io::Write::write_fmt::he1bcd251ec6e4153
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x6074bb97c322 - std::sys::backtrace::BacktraceLock::print::hb47c770ef659fd10
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x6074bb97da3c - std::panicking::default_hook::{{closure}}::hdda8afb9d457a22c
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x6074bb97d892 - std::panicking::default_hook::h7c46b44874fe5c9a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x6074bb945974 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h178a5fcedee41e2f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x6074bb945974 - test::test_main_with_exit_callback::{{closure}}::h951a41e0149d6d5d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x6074bb97e41b - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h13602080f5b63276
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x6074bb97e41b - std::panicking::rust_panic_with_hook::ha6cb99ed099eb1c5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x6074bb97e1b6 - std::panicking::begin_panic_handler::{{closure}}::he11808bc797ee921
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:699:13
[INFO] [stdout]   16:     0x6074bb97c9c9 - std::sys::backtrace::__rust_end_short_backtrace::h9418807cb7346258
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   17:     0x6074bb97de7d - __rustc[18fb429eef004894]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x6074bb9a1040 - core::panicking::panic_fmt::hd890aeb12c3a3fc3
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x6074bb9a10ac - core::panicking::panic::h318cb8731d7e290d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:145:5
[INFO] [stdout]   20:     0x6074bb9006c9 - ml_toolkit::sampling::sampling::tests::test_stratified_shuffle_split::h2f6745fb9defa1ce
[INFO] [stdout]   21:     0x6074bb900ed2 - ml_toolkit::sampling::sampling::tests::test_multiple_stratified_shuffle_split::h545ae9adcfc74741
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sampling/sampling.rs:157:9
[INFO] [stdout]   22:     0x6074bb8fbad9 - ml_toolkit::sampling::sampling::tests::test_multiple_stratified_shuffle_split::{{closure}}::hfe3b2422db6a23c9
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sampling/sampling.rs:152:48
[INFO] [stdout]   23:     0x6074bb8fbad9 - core::ops::function::FnOnce::call_once::h07c3cf62d59a59c0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x6074bb94b0fb - core::ops::function::FnOnce::call_once::h2869fb5b0a2b0bdc
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x6074bb94b0fb - test::__rust_begin_short_backtrace::h7dd7142bd62fa711
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:648:18
[INFO] [stdout]   26:     0x6074bb94a2ee - test::run_test_in_process::{{closure}}::h43a753f038d36b3f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:74
[INFO] [stdout]   27:     0x6074bb94a2ee - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0ca95dd3e12d1e16
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x6074bb94a2ee - std::panicking::catch_unwind::do_call::he308587d70ac34ba
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   29:     0x6074bb94a2ee - std::panicking::catch_unwind::h30dcba31973e8fb0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   30:     0x6074bb94a2ee - std::panic::catch_unwind::hfb68364e5621fbee
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x6074bb94a2ee - test::run_test_in_process::hcdcc2977903b998a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:27
[INFO] [stdout]   32:     0x6074bb94a2ee - test::run_test::{{closure}}::h544a6550958c5d14
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:592:43
[INFO] [stdout]   33:     0x6074bb90de64 - test::run_test::{{closure}}::hb172e48ebe2b92c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:622:41
[INFO] [stdout]   34:     0x6074bb90de64 - std::sys::backtrace::__rust_begin_short_backtrace::h7e79d8706638bea0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   35:     0x6074bb91183a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc4a275f1e71b8ab0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x6074bb91183a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h01ed0d242df78cfd
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x6074bb91183a - std::panicking::catch_unwind::do_call::h052f373fb905fee0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   38:     0x6074bb91183a - std::panicking::catch_unwind::hb425d20c8ffb09c8
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   39:     0x6074bb91183a - std::panic::catch_unwind::ha0d5dfbf18fdeda5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x6074bb91183a - std::thread::Builder::spawn_unchecked_::{{closure}}::hbe79182bd37949c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x6074bb91183a - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc096c4a06972fde5
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x6074bb981377 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h47377e27fb938a26
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   43:     0x6074bb981377 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h72f1fe5d095abf57
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   44:     0x6074bb981377 - std::sys::pal::unix::thread::Thread::new::thread_start::h0a4d8e1b9c0d38cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/pal/unix/thread.rs:97:17
[INFO] [stdout]   45:     0x7636eac57aa4 - <unknown>
[INFO] [stdout]   46:     0x7636eace4a34 - clone
[INFO] [stdout]   47:                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 0.22s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c72f1dcac423070668bdf9f587dfc37e6f4cef6921fc668984aa7f12bcaa7910", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c72f1dcac423070668bdf9f587dfc37e6f4cef6921fc668984aa7f12bcaa7910", kill_on_drop: false }`
[INFO] [stdout] c72f1dcac423070668bdf9f587dfc37e6f4cef6921fc668984aa7f12bcaa7910
