[INFO] cloning repository https://github.com/abedinia/rust_decision_tree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/abedinia/rust_decision_tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabedinia%2Frust_decision_tree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabedinia%2Frust_decision_tree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bd6e217514a7544d4c4fb5c8d1c438209f9d98db
[INFO] testing abedinia/rust_decision_tree against beta-2026-03-05 for beta-1.95-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabedinia%2Frust_decision_tree" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/abedinia/rust_decision_tree
[INFO] finished tweaking git repo https://github.com/abedinia/rust_decision_tree
[INFO] tweaked toml for git repo https://github.com/abedinia/rust_decision_tree written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/abedinia/rust_decision_tree on toolchain beta-2026-03-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/abedinia/rust_decision_tree already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-03-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc92f21781f545f9f84210239617754fcac664dcedc269ff6a875ad82973353a
[INFO] running `Command { std: "docker" "start" "-a" "fc92f21781f545f9f84210239617754fcac664dcedc269ff6a875ad82973353a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc92f21781f545f9f84210239617754fcac664dcedc269ff6a875ad82973353a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc92f21781f545f9f84210239617754fcac664dcedc269ff6a875ad82973353a", kill_on_drop: false }`
[INFO] [stdout] fc92f21781f545f9f84210239617754fcac664dcedc269ff6a875ad82973353a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d5dd3bdfff398b2965253bb319193050b21419065485e052bf0b29e58b97108
[INFO] running `Command { std: "docker" "start" "-a" "2d5dd3bdfff398b2965253bb319193050b21419065485e052bf0b29e58b97108", kill_on_drop: false }`
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling decision_tree v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Hash` and `Hasher`
[INFO] [stdout]  --> src/classification_tree.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::hash::{Hash, Hasher};
[INFO] [stdout]   |                 ^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         X: &[Vec<f64>], 
[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_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:167:17
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let mut X_left = Vec::new();
[INFO] [stdout]     |                 ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:169:17
[INFO] [stdout]     |
[INFO] [stdout] 169 |         let mut X_right = Vec::new();
[INFO] [stdout]     |                 ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:194:39
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub fn build_tree_parallel(&self, X: &[Vec<f64>], y: &[f64], current_depth: usize) -> DecisionNode {
[INFO] [stdout]     |                                       ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:216:30
[INFO] [stdout]     |
[INFO] [stdout] 216 |                         let (X_left, y_left, X_right, y_right) = 
[INFO] [stdout]     |                              ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:216:46
[INFO] [stdout]     |
[INFO] [stdout] 216 |                         let (X_left, y_left, X_right, y_right) = 
[INFO] [stdout]     |                                              ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:252:18
[INFO] [stdout]     |
[INFO] [stdout] 252 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stdout]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:252:34
[INFO] [stdout]     |
[INFO] [stdout] 252 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stdout]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:281:27
[INFO] [stdout]     |
[INFO] [stdout] 281 |     pub fn fit(&mut self, X: Vec<Vec<f64>>, y: Vec<f64>) -> &mut Self {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:292:27
[INFO] [stdout]     |
[INFO] [stdout] 292 |     pub fn predict(&self, X: Vec<Vec<f64>>) -> Vec<f64> {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:399:9
[INFO] [stdout]     |
[INFO] [stdout] 399 |         X: &[Vec<f64>],
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:442:18
[INFO] [stdout]     |
[INFO] [stdout] 442 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stdout]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:442:34
[INFO] [stdout]     |
[INFO] [stdout] 442 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stdout]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:472:9
[INFO] [stdout]     |
[INFO] [stdout] 472 |         X: &[Vec<f64>],
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:497:18
[INFO] [stdout]     |
[INFO] [stdout] 497 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_feature(X, y, feature_i, threshold);
[INFO] [stdout]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:497:34
[INFO] [stdout]     |
[INFO] [stdout] 497 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_feature(X, y, feature_i, threshold);
[INFO] [stdout]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:520:9
[INFO] [stdout]     |
[INFO] [stdout] 520 |         X: &[Vec<f64>],
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:530:18
[INFO] [stdout]     |
[INFO] [stdout] 530 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_categorical_feature(
[INFO] [stdout]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:530:34
[INFO] [stdout]     |
[INFO] [stdout] 530 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_categorical_feature(
[INFO] [stdout]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:554:9
[INFO] [stdout]     |
[INFO] [stdout] 554 |         X: &[Vec<f64>],
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:559:17
[INFO] [stdout]     |
[INFO] [stdout] 559 |         let mut X_left = Vec::new();
[INFO] [stdout]     |                 ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:561:17
[INFO] [stdout]     |
[INFO] [stdout] 561 |         let mut X_right = Vec::new();
[INFO] [stdout]     |                 ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/classification_tree.rs:231:27
[INFO] [stdout]     |
[INFO] [stdout] 231 |     pub fn fit(&mut self, X: Vec<Vec<f64>>, y: Vec<f64>) -> &mut Self {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/classification_tree.rs:243:27
[INFO] [stdout]     |
[INFO] [stdout] 243 |     pub fn predict(&self, X: Vec<Vec<f64>>) -> Vec<f64> {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/regression_tree.rs:125:27
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub fn fit(&mut self, X: Vec<Vec<f64>>, y: Vec<f64>) -> &mut Self {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/regression_tree.rs:137:27
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn predict(&self, X: Vec<Vec<f64>>) -> Vec<f64> {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]   --> src/utils.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     X: Vec<Vec<f64>>, 
[INFO] [stdout]    |     ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_train` should have a snake case name
[INFO] [stdout]   --> src/utils.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut X_train = Vec::with_capacity(train_samples);
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_train`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_test` should have a snake case name
[INFO] [stdout]   --> src/utils.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut X_test = Vec::with_capacity(test_samples);
[INFO] [stdout]    |             ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.27s
[INFO] running `Command { std: "docker" "inspect" "2d5dd3bdfff398b2965253bb319193050b21419065485e052bf0b29e58b97108", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d5dd3bdfff398b2965253bb319193050b21419065485e052bf0b29e58b97108", kill_on_drop: false }`
[INFO] [stdout] 2d5dd3bdfff398b2965253bb319193050b21419065485e052bf0b29e58b97108
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f73280f71d50144dfd51640b0558a84cfdc1d11eb364c8a36daee56a047579f4
[INFO] running `Command { std: "docker" "start" "-a" "f73280f71d50144dfd51640b0558a84cfdc1d11eb364c8a36daee56a047579f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling plotters-backend v0.3.7
[INFO] [stderr]    Compiling ciborium-io v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling half v2.6.0
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling oorandom v11.1.5
[INFO] [stderr]    Compiling clap_builder v4.5.35
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stderr]    Compiling decision_tree v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stdout] warning: unused imports: `Hash` and `Hasher`
[INFO] [stdout]  --> src/classification_tree.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::hash::{Hash, Hasher};
[INFO] [stdout]   |                 ^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         X: &[Vec<f64>], 
[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_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:167:17
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let mut X_left = Vec::new();
[INFO] [stdout]     |                 ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:169:17
[INFO] [stdout]     |
[INFO] [stdout] 169 |         let mut X_right = Vec::new();
[INFO] [stdout]     |                 ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:194:39
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub fn build_tree_parallel(&self, X: &[Vec<f64>], y: &[f64], current_depth: usize) -> DecisionNode {
[INFO] [stdout]     |                                       ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:216:30
[INFO] [stdout]     |
[INFO] [stdout] 216 |                         let (X_left, y_left, X_right, y_right) = 
[INFO] [stdout]     |                              ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:216:46
[INFO] [stdout]     |
[INFO] [stdout] 216 |                         let (X_left, y_left, X_right, y_right) = 
[INFO] [stdout]     |                                              ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:252:18
[INFO] [stdout]     |
[INFO] [stdout] 252 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stdout]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:252:34
[INFO] [stdout]     |
[INFO] [stdout] 252 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stdout]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:281:27
[INFO] [stdout]     |
[INFO] [stdout] 281 |     pub fn fit(&mut self, X: Vec<Vec<f64>>, y: Vec<f64>) -> &mut Self {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:292:27
[INFO] [stdout]     |
[INFO] [stdout] 292 |     pub fn predict(&self, X: Vec<Vec<f64>>) -> Vec<f64> {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:399:9
[INFO] [stdout]     |
[INFO] [stdout] 399 |         X: &[Vec<f64>],
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:442:18
[INFO] [stdout]     |
[INFO] [stdout] 442 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stdout]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:442:34
[INFO] [stdout]     |
[INFO] [stdout] 442 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stdout]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:472:9
[INFO] [stdout]     |
[INFO] [stdout] 472 |         X: &[Vec<f64>],
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:497:18
[INFO] [stdout]     |
[INFO] [stdout] 497 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_feature(X, y, feature_i, threshold);
[INFO] [stdout]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:497:34
[INFO] [stdout]     |
[INFO] [stdout] 497 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_feature(X, y, feature_i, threshold);
[INFO] [stdout]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:520:9
[INFO] [stdout]     |
[INFO] [stdout] 520 |         X: &[Vec<f64>],
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:530:18
[INFO] [stdout]     |
[INFO] [stdout] 530 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_categorical_feature(
[INFO] [stdout]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:530:34
[INFO] [stdout]     |
[INFO] [stdout] 530 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_categorical_feature(
[INFO] [stdout]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:554:9
[INFO] [stdout]     |
[INFO] [stdout] 554 |         X: &[Vec<f64>],
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:559:17
[INFO] [stdout]     |
[INFO] [stdout] 559 |         let mut X_left = Vec::new();
[INFO] [stdout]     |                 ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:561:17
[INFO] [stdout]     |
[INFO] [stdout] 561 |         let mut X_right = Vec::new();
[INFO] [stdout]     |                 ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/classification_tree.rs:231:27
[INFO] [stdout]     |
[INFO] [stdout] 231 |     pub fn fit(&mut self, X: Vec<Vec<f64>>, y: Vec<f64>) -> &mut Self {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/classification_tree.rs:243:27
[INFO] [stdout]     |
[INFO] [stdout] 243 |     pub fn predict(&self, X: Vec<Vec<f64>>) -> Vec<f64> {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/regression_tree.rs:125:27
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub fn fit(&mut self, X: Vec<Vec<f64>>, y: Vec<f64>) -> &mut Self {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/regression_tree.rs:137:27
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn predict(&self, X: Vec<Vec<f64>>) -> Vec<f64> {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]   --> src/utils.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     X: Vec<Vec<f64>>, 
[INFO] [stdout]    |     ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_train` should have a snake case name
[INFO] [stdout]   --> src/utils.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut X_train = Vec::with_capacity(train_samples);
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_train`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_test` should have a snake case name
[INFO] [stdout]   --> src/utils.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut X_test = Vec::with_capacity(test_samples);
[INFO] [stdout]    |             ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling is-terminal v0.4.16
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling clap v4.5.35
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stdout] warning: unused imports: `Hash` and `Hasher`
[INFO] [stdout]  --> src/classification_tree.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::hash::{Hash, Hasher};
[INFO] [stdout]   |                 ^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]   --> tests/tree_tests.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let X = vec![
[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_train` should have a snake case name
[INFO] [stdout]   --> tests/tree_tests.rs:24:10
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let (X_train, X_test, y_train, y_test) = train_test_split(X, y, 0.33);
[INFO] [stdout]    |          ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_train`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_test` should have a snake case name
[INFO] [stdout]   --> tests/tree_tests.rs:24:19
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let (X_train, X_test, y_train, y_test) = train_test_split(X, y, 0.33);
[INFO] [stdout]    |                   ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]   --> tests/tree_tests.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let X = vec![
[INFO] [stdout]    |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_train` should have a snake case name
[INFO] [stdout]   --> tests/tree_tests.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let X_train = X.clone();
[INFO] [stdout]    |         ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_train`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_test` should have a snake case name
[INFO] [stdout]   --> tests/tree_tests.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let X_test = X.clone();
[INFO] [stdout]    |         ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> tests/tree_tests.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 139 |     let X = vec![
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         X: &[Vec<f64>], 
[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_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:167:17
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let mut X_left = Vec::new();
[INFO] [stdout]     |                 ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:169:17
[INFO] [stdout]     |
[INFO] [stdout] 169 |         let mut X_right = Vec::new();
[INFO] [stdout]     |                 ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:194:39
[INFO] [stdout]     |
[INFO] [stdout] 194 |     pub fn build_tree_parallel(&self, X: &[Vec<f64>], y: &[f64], current_depth: usize) -> DecisionNode {
[INFO] [stdout]     |                                       ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:216:30
[INFO] [stdout]     |
[INFO] [stdout] 216 |                         let (X_left, y_left, X_right, y_right) = 
[INFO] [stdout]     |                              ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:216:46
[INFO] [stdout]     |
[INFO] [stdout] 216 |                         let (X_left, y_left, X_right, y_right) = 
[INFO] [stdout]     |                                              ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:252:18
[INFO] [stdout]     |
[INFO] [stdout] 252 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stdout]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:252:34
[INFO] [stdout]     |
[INFO] [stdout] 252 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stdout]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:281:27
[INFO] [stdout]     |
[INFO] [stdout] 281 |     pub fn fit(&mut self, X: Vec<Vec<f64>>, y: Vec<f64>) -> &mut Self {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:292:27
[INFO] [stdout]     |
[INFO] [stdout] 292 |     pub fn predict(&self, X: Vec<Vec<f64>>) -> Vec<f64> {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:399:9
[INFO] [stdout]     |
[INFO] [stdout] 399 |         X: &[Vec<f64>],
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:442:18
[INFO] [stdout]     |
[INFO] [stdout] 442 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stdout]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:442:34
[INFO] [stdout]     |
[INFO] [stdout] 442 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stdout]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:472:9
[INFO] [stdout]     |
[INFO] [stdout] 472 |         X: &[Vec<f64>],
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:497:18
[INFO] [stdout]     |
[INFO] [stdout] 497 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_feature(X, y, feature_i, threshold);
[INFO] [stdout]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:497:34
[INFO] [stdout]     |
[INFO] [stdout] 497 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_feature(X, y, feature_i, threshold);
[INFO] [stdout]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:520:9
[INFO] [stdout]     |
[INFO] [stdout] 520 |         X: &[Vec<f64>],
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:530:18
[INFO] [stdout]     |
[INFO] [stdout] 530 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_categorical_feature(
[INFO] [stdout]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:530:34
[INFO] [stdout]     |
[INFO] [stdout] 530 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_categorical_feature(
[INFO] [stdout]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:554:9
[INFO] [stdout]     |
[INFO] [stdout] 554 |         X: &[Vec<f64>],
[INFO] [stdout]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_left` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:559:17
[INFO] [stdout]     |
[INFO] [stdout] 559 |         let mut X_left = Vec::new();
[INFO] [stdout]     |                 ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_right` should have a snake case name
[INFO] [stdout]    --> src/decision_tree.rs:561:17
[INFO] [stdout]     |
[INFO] [stdout] 561 |         let mut X_right = Vec::new();
[INFO] [stdout]     |                 ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/classification_tree.rs:231:27
[INFO] [stdout]     |
[INFO] [stdout] 231 |     pub fn fit(&mut self, X: Vec<Vec<f64>>, y: Vec<f64>) -> &mut Self {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/classification_tree.rs:243:27
[INFO] [stdout]     |
[INFO] [stdout] 243 |     pub fn predict(&self, X: Vec<Vec<f64>>) -> Vec<f64> {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/regression_tree.rs:125:27
[INFO] [stdout]     |
[INFO] [stdout] 125 |     pub fn fit(&mut self, X: Vec<Vec<f64>>, y: Vec<f64>) -> &mut Self {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]    --> src/regression_tree.rs:137:27
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn predict(&self, X: Vec<Vec<f64>>) -> Vec<f64> {
[INFO] [stdout]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X` should have a snake case name
[INFO] [stdout]   --> src/utils.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     X: Vec<Vec<f64>>, 
[INFO] [stdout]    |     ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_train` should have a snake case name
[INFO] [stdout]   --> src/utils.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let mut X_train = Vec::with_capacity(train_samples);
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_train`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `X_test` should have a snake case name
[INFO] [stdout]   --> src/utils.rs:34:13
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mut X_test = Vec::with_capacity(test_samples);
[INFO] [stdout]    |             ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_test`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 20.07s
[INFO] running `Command { std: "docker" "inspect" "f73280f71d50144dfd51640b0558a84cfdc1d11eb364c8a36daee56a047579f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f73280f71d50144dfd51640b0558a84cfdc1d11eb364c8a36daee56a047579f4", kill_on_drop: false }`
[INFO] [stdout] f73280f71d50144dfd51640b0558a84cfdc1d11eb364c8a36daee56a047579f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-03-05" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bbae051a214350f0cd68cf8c3f87b3212f0202fbbf8379ec0fa110cea1c46c3a
[INFO] running `Command { std: "docker" "start" "-a" "bbae051a214350f0cd68cf8c3f87b3212f0202fbbf8379ec0fa110cea1c46c3a", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `Hash` and `Hasher`
[INFO] [stderr]  --> src/classification_tree.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::hash::{Hash, Hasher};
[INFO] [stderr]   |                 ^^^^  ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:162:9
[INFO] [stderr]     |
[INFO] [stderr] 162 |         X: &[Vec<f64>], 
[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_left` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:167:17
[INFO] [stderr]     |
[INFO] [stderr] 167 |         let mut X_left = Vec::new();
[INFO] [stderr]     |                 ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_right` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:169:17
[INFO] [stderr]     |
[INFO] [stderr] 169 |         let mut X_right = Vec::new();
[INFO] [stderr]     |                 ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:194:39
[INFO] [stderr]     |
[INFO] [stderr] 194 |     pub fn build_tree_parallel(&self, X: &[Vec<f64>], y: &[f64], current_depth: usize) -> DecisionNode {
[INFO] [stderr]     |                                       ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_left` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:216:30
[INFO] [stderr]     |
[INFO] [stderr] 216 |                         let (X_left, y_left, X_right, y_right) = 
[INFO] [stderr]     |                              ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_right` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:216:46
[INFO] [stderr]     |
[INFO] [stderr] 216 |                         let (X_left, y_left, X_right, y_right) = 
[INFO] [stderr]     |                                              ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_left` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:252:18
[INFO] [stderr]     |
[INFO] [stderr] 252 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stderr]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_right` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:252:34
[INFO] [stderr]     |
[INFO] [stderr] 252 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stderr]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:281:27
[INFO] [stderr]     |
[INFO] [stderr] 281 |     pub fn fit(&mut self, X: Vec<Vec<f64>>, y: Vec<f64>) -> &mut Self {
[INFO] [stderr]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:292:27
[INFO] [stderr]     |
[INFO] [stderr] 292 |     pub fn predict(&self, X: Vec<Vec<f64>>) -> Vec<f64> {
[INFO] [stderr]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:399:9
[INFO] [stderr]     |
[INFO] [stderr] 399 |         X: &[Vec<f64>],
[INFO] [stderr]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_left` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:442:18
[INFO] [stderr]     |
[INFO] [stderr] 442 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stderr]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_right` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:442:34
[INFO] [stderr]     |
[INFO] [stderr] 442 |             let (X_left, y_left, X_right, y_right) = best_sets.unwrap();
[INFO] [stderr]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:472:9
[INFO] [stderr]     |
[INFO] [stderr] 472 |         X: &[Vec<f64>],
[INFO] [stderr]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_left` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:497:18
[INFO] [stderr]     |
[INFO] [stderr] 497 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_feature(X, y, feature_i, threshold);
[INFO] [stderr]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_right` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:497:34
[INFO] [stderr]     |
[INFO] [stderr] 497 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_feature(X, y, feature_i, threshold);
[INFO] [stderr]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:520:9
[INFO] [stderr]     |
[INFO] [stderr] 520 |         X: &[Vec<f64>],
[INFO] [stderr]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_left` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:530:18
[INFO] [stderr]     |
[INFO] [stderr] 530 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_categorical_feature(
[INFO] [stderr]     |                  ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_right` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:530:34
[INFO] [stderr]     |
[INFO] [stderr] 530 |             let (X_left, y_left, X_right, y_right) = Self::divide_on_categorical_feature(
[INFO] [stderr]     |                                  ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:554:9
[INFO] [stderr]     |
[INFO] [stderr] 554 |         X: &[Vec<f64>],
[INFO] [stderr]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_left` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:559:17
[INFO] [stderr]     |
[INFO] [stderr] 559 |         let mut X_left = Vec::new();
[INFO] [stderr]     |                 ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_left`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_right` should have a snake case name
[INFO] [stderr]    --> src/decision_tree.rs:561:17
[INFO] [stderr]     |
[INFO] [stderr] 561 |         let mut X_right = Vec::new();
[INFO] [stderr]     |                 ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_right`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/classification_tree.rs:231:27
[INFO] [stderr]     |
[INFO] [stderr] 231 |     pub fn fit(&mut self, X: Vec<Vec<f64>>, y: Vec<f64>) -> &mut Self {
[INFO] [stderr]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/classification_tree.rs:243:27
[INFO] [stderr]     |
[INFO] [stderr] 243 |     pub fn predict(&self, X: Vec<Vec<f64>>) -> Vec<f64> {
[INFO] [stderr]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/regression_tree.rs:125:27
[INFO] [stderr]     |
[INFO] [stderr] 125 |     pub fn fit(&mut self, X: Vec<Vec<f64>>, y: Vec<f64>) -> &mut Self {
[INFO] [stderr]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> src/regression_tree.rs:137:27
[INFO] [stderr]     |
[INFO] [stderr] 137 |     pub fn predict(&self, X: Vec<Vec<f64>>) -> Vec<f64> {
[INFO] [stderr]     |                           ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]   --> src/utils.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     X: Vec<Vec<f64>>, 
[INFO] [stderr]    |     ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_train` should have a snake case name
[INFO] [stderr]   --> src/utils.rs:33:13
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let mut X_train = Vec::with_capacity(train_samples);
[INFO] [stderr]    |             ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_train`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_test` should have a snake case name
[INFO] [stderr]   --> src/utils.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut X_test = Vec::with_capacity(test_samples);
[INFO] [stderr]    |             ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_test`
[INFO] [stderr] 
[INFO] [stderr] warning: `decision_tree` (lib) generated 30 warnings (run `cargo fix --lib -p decision_tree` to apply 1 suggestion)
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]   --> tests/tree_tests.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let X = vec![
[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_train` should have a snake case name
[INFO] [stderr]   --> tests/tree_tests.rs:24:10
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let (X_train, X_test, y_train, y_test) = train_test_split(X, y, 0.33);
[INFO] [stderr]    |          ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_train`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_test` should have a snake case name
[INFO] [stderr]   --> tests/tree_tests.rs:24:19
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let (X_train, X_test, y_train, y_test) = train_test_split(X, y, 0.33);
[INFO] [stderr]    |                   ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_test`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]   --> tests/tree_tests.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let X = vec![
[INFO] [stderr]    |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_train` should have a snake case name
[INFO] [stderr]   --> tests/tree_tests.rs:81:9
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let X_train = X.clone();
[INFO] [stderr]    |         ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_train`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X_test` should have a snake case name
[INFO] [stderr]   --> tests/tree_tests.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 |     let X_test = X.clone();
[INFO] [stderr]    |         ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `x_test`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `X` should have a snake case name
[INFO] [stderr]    --> tests/tree_tests.rs:139:9
[INFO] [stderr]     |
[INFO] [stderr] 139 |     let X = vec![
[INFO] [stderr]     |         ^ help: convert the identifier to snake case (notice the capitalization): `x`
[INFO] [stderr] 
[INFO] [stderr] warning: `decision_tree` (lib test) generated 30 warnings (30 duplicates)
[INFO] [stderr] warning: `decision_tree` (test "tree_tests") generated 7 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/decision_tree-af95027e1440c4aa)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/tree_tests.rs (/opt/rustwide/target/debug/deps/tree_tests-384be34085c264f3)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_builder_pattern ... ok
[INFO] [stdout] test test_classification_tree ... ok
[INFO] [stdout] test test_regression_tree ... ok
[INFO] [stdout] test test_export_graphviz ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test_export_graphviz stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test_export_graphviz' (27) panicked at tests/tree_tests.rs:162:5:
[INFO] [stdout] assertion failed: result.is_ok()
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x636dd0ff197a - std[b80a194dd3c418bb]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x636dd0ff197a - std[b80a194dd3c418bb]::backtrace_rs::backtrace::trace_unsynchronized::<std[b80a194dd3c418bb]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x636dd0ff197a - std[b80a194dd3c418bb]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x636dd0ff197a - <<std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[10b6fa85044e1869]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x636dd100572a - <core[10b6fa85044e1869]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x636dd100572a - core[10b6fa85044e1869]::fmt::write
[INFO] [stdout]    6:     0x636dd0ff6252 - std[b80a194dd3c418bb]::io::default_write_fmt::<alloc[dd269455e567d8e9]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x636dd0ff6252 - <alloc[dd269455e567d8e9]::vec::Vec<u8> as std[b80a194dd3c418bb]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x636dd0fd08df - <std[b80a194dd3c418bb]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x636dd0fd08df - std[b80a194dd3c418bb]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x636dd0fe9d69 - std[b80a194dd3c418bb]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x636dd0f2a02c - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   12:     0x636dd0f2a02c - test[826cbc6ef54ab466]::test_main_with_exit_callback::<test[826cbc6ef54ab466]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x636dd0fe9fe2 - <alloc[dd269455e567d8e9]::boxed::Box<dyn for<'a, 'b> core[10b6fa85044e1869]::ops::function::Fn<(&'a std[b80a194dd3c418bb]::panic::PanicHookInfo<'b>,), Output = ()> + core[10b6fa85044e1869]::marker::Sync + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::Fn<(&std[b80a194dd3c418bb]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2254:9
[INFO] [stdout]   14:     0x636dd0fe9fe2 - std[b80a194dd3c418bb]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x636dd0fd09ca - std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:691:13
[INFO] [stdout]   16:     0x636dd0fc8289 - std[b80a194dd3c418bb]::sys::backtrace::__rust_end_short_backtrace::<std[b80a194dd3c418bb]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x636dd0fd16ad - __rustc[9698a3e60dd14283]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x636dd1005fdc - core[10b6fa85044e1869]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x636dd1005fa2 - core[10b6fa85044e1869]::panicking::panic
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panicking.rs:150:5
[INFO] [stdout]   20:     0x636dd0f169a8 - tree_tests::test_export_graphviz::h669a3ac7c6e656b1
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/tree_tests.rs:162:5
[INFO] [stdout]   21:     0x636dd0f16a87 - tree_tests::test_export_graphviz::{{closure}}::h727938698a24c9a3
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/tree_tests.rs:138:26
[INFO] [stdout]   22:     0x636dd0f1bd66 - core::ops::function::FnOnce::call_once::h21a551d03d49dea6
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x636dd0f1e10b - <fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x636dd0f1e10b - test[826cbc6ef54ab466]::__rust_begin_short_backtrace::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, fn() -> core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:663:18
[INFO] [stdout]   25:     0x636dd0f2aafb - test[826cbc6ef54ab466]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:74
[INFO] [stdout]   26:     0x636dd0f2aafb - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   27:     0x636dd0f2aafb - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   28:     0x636dd0f2aafb - std[b80a194dd3c418bb]::panicking::catch_unwind::<core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>, core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   29:     0x636dd0f2aafb - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<test[826cbc6ef54ab466]::run_test_in_process::{closure#0}>, core[10b6fa85044e1869]::result::Result<(), alloc[dd269455e567d8e9]::string::String>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x636dd0f2aafb - test[826cbc6ef54ab466]::run_test_in_process
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:686:27
[INFO] [stdout]   31:     0x636dd0f2aafb - test[826cbc6ef54ab466]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:607:43
[INFO] [stdout]   32:     0x636dd0f26214 - test[826cbc6ef54ab466]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/test/src/lib.rs:637:41
[INFO] [stdout]   33:     0x636dd0f26214 - std[b80a194dd3c418bb]::sys::backtrace::__rust_begin_short_backtrace::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   34:     0x636dd0f2d702 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   35:     0x636dd0f2d702 - <core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   36:     0x636dd0f2d702 - std[b80a194dd3c418bb]::panicking::catch_unwind::do_call::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:581:40
[INFO] [stdout]   37:     0x636dd0f2d702 - std[b80a194dd3c418bb]::panicking::catch_unwind::<(), core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panicking.rs:544:19
[INFO] [stdout]   38:     0x636dd0f2d702 - std[b80a194dd3c418bb]::panic::catch_unwind::<core[10b6fa85044e1869]::panic::unwind_safe::AssertUnwindSafe<std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x636dd0f2d702 - std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked::<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   40:     0x636dd0f2d702 - <std[b80a194dd3c418bb]::thread::lifecycle::spawn_unchecked<test[826cbc6ef54ab466]::run_test::{closure#1}, ()>::{closure#1} as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x636dd0ff127f - <alloc[dd269455e567d8e9]::boxed::Box<dyn core[10b6fa85044e1869]::ops::function::FnOnce<(), Output = ()> + core[10b6fa85044e1869]::marker::Send> as core[10b6fa85044e1869]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/alloc/src/boxed.rs:2240:9
[INFO] [stdout]   42:     0x636dd0ff127f - <std[b80a194dd3c418bb]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/ad726b5063362ec9897ef3d67452fc5606ee70fa/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   43:     0x7e81b3043aa4 - <unknown>
[INFO] [stdout]   44:     0x7e81b30d0a64 - clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test_export_graphviz
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 3 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--test tree_tests`
[INFO] running `Command { std: "docker" "inspect" "bbae051a214350f0cd68cf8c3f87b3212f0202fbbf8379ec0fa110cea1c46c3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbae051a214350f0cd68cf8c3f87b3212f0202fbbf8379ec0fa110cea1c46c3a", kill_on_drop: false }`
[INFO] [stdout] bbae051a214350f0cd68cf8c3f87b3212f0202fbbf8379ec0fa110cea1c46c3a
