[INFO] cloning repository https://github.com/dzharikhin/ml_example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dzharikhin/ml_example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdzharikhin%2Fml_example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdzharikhin%2Fml_example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 85bfec1529dce86c9792da08cd1216ae7b68168a
[INFO] building dzharikhin/ml_example against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdzharikhin%2Fml_example" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dzharikhin/ml_example on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dzharikhin/ml_example
[INFO] finished tweaking git repo https://github.com/dzharikhin/ml_example
[INFO] tweaked toml for git repo https://github.com/dzharikhin/ml_example written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dzharikhin/ml_example 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad1c5b86210b8e844b9f252cf49d3d69fd08250886ae56a9410d3667e7cb492d
[INFO] running `Command { std: "docker" "start" "-a" "ad1c5b86210b8e844b9f252cf49d3d69fd08250886ae56a9410d3667e7cb492d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad1c5b86210b8e844b9f252cf49d3d69fd08250886ae56a9410d3667e7cb492d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad1c5b86210b8e844b9f252cf49d3d69fd08250886ae56a9410d3667e7cb492d", kill_on_drop: false }`
[INFO] [stdout] ad1c5b86210b8e844b9f252cf49d3d69fd08250886ae56a9410d3667e7cb492d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b577e7037be4eadb32473fb49f7fd6b8983e9f11a81042e8173c857f4c44357
[INFO] running `Command { std: "docker" "start" "-a" "1b577e7037be4eadb32473fb49f7fd6b8983e9f11a81042e8173c857f4c44357", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]    Compiling libc v0.2.23
[INFO] [stderr]    Compiling itertools v0.6.1
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling ml-example v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tree/main.rs:22:40
[INFO] [stdout]    |
[INFO] [stdout] 22 |     providers: &'r HashMap<String, Box<Fn(&Object) -> i8>>,
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     providers: &'r HashMap<String, Box<dyn Fn(&Object) -> i8>>,
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tree/main.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |     route_map: HashMap<i8, Box<Node + 'r>>
[INFO] [stdout]    |                                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 |     route_map: HashMap<i8, Box<dyn Node + 'r>>
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tree/main.rs:68:78
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn build_tree<'a>(data: Vec<TrainObject>, providers: &'a HashMap<String, Box<Fn(&Object) -> i8>>) -> Box<Node + 'a> {
[INFO] [stdout]    |                                                                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn build_tree<'a>(data: Vec<TrainObject>, providers: &'a HashMap<String, Box<dyn Fn(&Object) -> i8>>) -> Box<Node + 'a> {
[INFO] [stdout]    |                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tree/main.rs:68:106
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn build_tree<'a>(data: Vec<TrainObject>, providers: &'a HashMap<String, Box<Fn(&Object) -> i8>>) -> Box<Node + 'a> {
[INFO] [stdout]    |                                                                                                          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn build_tree<'a>(data: Vec<TrainObject>, providers: &'a HashMap<String, Box<Fn(&Object) -> i8>>) -> Box<dyn Node + 'a> {
[INFO] [stdout]    |                                                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tree/main.rs:118:46
[INFO] [stdout]     |
[INFO] [stdout] 118 | fn calculate_gini_for_feature(provider: &Box<Fn(&Object) -> i8>, data: &[TrainObject], classes: &Vec<i8>) -> f64 {
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 118 | fn calculate_gini_for_feature(provider: &Box<dyn Fn(&Object) -> i8>, data: &[TrainObject], classes: &Vec<i8>) -> f64 {
[INFO] [stdout]     |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tree/main.rs:47:43
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mut providers:HashMap<String, Box<Fn(&Object) -> i8>> = HashMap::new();
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mut providers:HashMap<String, Box<dyn Fn(&Object) -> i8>> = HashMap::new();
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/neural/main.rs:128:5
[INFO] [stdout]     |
[INFO] [stdout] 128 |     (((val >= 0.0) as i8) as f64)
[INFO] [stdout]     |     ^                           ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 128 -     (((val >= 0.0) as i8) as f64)
[INFO] [stdout] 128 +     ((val >= 0.0) as i8) as f64
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/neural/main.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn generate_data(func: &Fn(f64, f64, f64) -> f64, amount: usize) -> Vec<DataSample> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn generate_data(func: &dyn Fn(f64, f64, f64) -> f64, amount: usize) -> Vec<DataSample> {
[INFO] [stdout]    |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gate` is never used
[INFO] [stdout]    --> src/neural/main.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn gate(val: f64) -> f64 {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid_derivative` is never used
[INFO] [stdout]    --> src/neural/main.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 | fn sigmoid_derivative(x: f64) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `Command { std: "docker" "inspect" "1b577e7037be4eadb32473fb49f7fd6b8983e9f11a81042e8173c857f4c44357", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b577e7037be4eadb32473fb49f7fd6b8983e9f11a81042e8173c857f4c44357", kill_on_drop: false }`
[INFO] [stdout] 1b577e7037be4eadb32473fb49f7fd6b8983e9f11a81042e8173c857f4c44357
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d0d61090048019f2df7ae27642b05eccfa73d06b23575b68ec8368629b53468
[INFO] running `Command { std: "docker" "start" "-a" "0d0d61090048019f2df7ae27642b05eccfa73d06b23575b68ec8368629b53468", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling ml-example v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tree/main.rs:22:40
[INFO] [stdout]    |
[INFO] [stdout] 22 |     providers: &'r HashMap<String, Box<Fn(&Object) -> i8>>,
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     providers: &'r HashMap<String, Box<dyn Fn(&Object) -> i8>>,
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tree/main.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |     route_map: HashMap<i8, Box<Node + 'r>>
[INFO] [stdout]    |                                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 |     route_map: HashMap<i8, Box<dyn Node + 'r>>
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/neural/main.rs:128:5
[INFO] [stdout]     |
[INFO] [stdout] 128 |     (((val >= 0.0) as i8) as f64)
[INFO] [stdout]     |     ^                           ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 128 -     (((val >= 0.0) as i8) as f64)
[INFO] [stdout] 128 +     ((val >= 0.0) as i8) as f64
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tree/main.rs:68:78
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn build_tree<'a>(data: Vec<TrainObject>, providers: &'a HashMap<String, Box<Fn(&Object) -> i8>>) -> Box<Node + 'a> {
[INFO] [stdout]    |                                                                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn build_tree<'a>(data: Vec<TrainObject>, providers: &'a HashMap<String, Box<dyn Fn(&Object) -> i8>>) -> Box<Node + 'a> {
[INFO] [stdout]    |                                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tree/main.rs:68:106
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn build_tree<'a>(data: Vec<TrainObject>, providers: &'a HashMap<String, Box<Fn(&Object) -> i8>>) -> Box<Node + 'a> {
[INFO] [stdout]    |                                                                                                          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 68 | fn build_tree<'a>(data: Vec<TrainObject>, providers: &'a HashMap<String, Box<Fn(&Object) -> i8>>) -> Box<dyn Node + 'a> {
[INFO] [stdout]    |                                                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/neural/main.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn generate_data(func: &Fn(f64, f64, f64) -> f64, amount: usize) -> Vec<DataSample> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn generate_data(func: &dyn Fn(f64, f64, f64) -> f64, amount: usize) -> Vec<DataSample> {
[INFO] [stdout]    |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/tree/main.rs:118:46
[INFO] [stdout]     |
[INFO] [stdout] 118 | fn calculate_gini_for_feature(provider: &Box<Fn(&Object) -> i8>, data: &[TrainObject], classes: &Vec<i8>) -> f64 {
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 118 | fn calculate_gini_for_feature(provider: &Box<dyn Fn(&Object) -> i8>, data: &[TrainObject], classes: &Vec<i8>) -> f64 {
[INFO] [stdout]     |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/tree/main.rs:47:43
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mut providers:HashMap<String, Box<Fn(&Object) -> i8>> = HashMap::new();
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let mut providers:HashMap<String, Box<dyn Fn(&Object) -> i8>> = HashMap::new();
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gate` is never used
[INFO] [stdout]    --> src/neural/main.rs:127:4
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn gate(val: f64) -> f64 {
[INFO] [stdout]     |    ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sigmoid_derivative` is never used
[INFO] [stdout]    --> src/neural/main.rs:135:4
[INFO] [stdout]     |
[INFO] [stdout] 135 | fn sigmoid_derivative(x: f64) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "0d0d61090048019f2df7ae27642b05eccfa73d06b23575b68ec8368629b53468", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d0d61090048019f2df7ae27642b05eccfa73d06b23575b68ec8368629b53468", kill_on_drop: false }`
[INFO] [stdout] 0d0d61090048019f2df7ae27642b05eccfa73d06b23575b68ec8368629b53468