[INFO] cloning repository https://github.com/SSebigo/iris-classification
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SSebigo/iris-classification" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSSebigo%2Firis-classification", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSSebigo%2Firis-classification'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 49bdf25c8825328d541edd31a06875d882b6fd94
[INFO] testing SSebigo/iris-classification against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSSebigo%2Firis-classification" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SSebigo/iris-classification on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SSebigo/iris-classification
[INFO] finished tweaking git repo https://github.com/SSebigo/iris-classification
[INFO] tweaked toml for git repo https://github.com/SSebigo/iris-classification written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/SSebigo/iris-classification already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ee6904829b878617c705f83d24b99d1d2b9fa6bd1715fb787ee6b74959578249
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ee6904829b878617c705f83d24b99d1d2b9fa6bd1715fb787ee6b74959578249", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee6904829b878617c705f83d24b99d1d2b9fa6bd1715fb787ee6b74959578249", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee6904829b878617c705f83d24b99d1d2b9fa6bd1715fb787ee6b74959578249", kill_on_drop: false }`
[INFO] [stdout] ee6904829b878617c705f83d24b99d1d2b9fa6bd1715fb787ee6b74959578249
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10900e8efd8debcffbe72de9f043d44b6de9a7b20aebcf3b6590b7b8e34c2872
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "10900e8efd8debcffbe72de9f043d44b6de9a7b20aebcf3b6590b7b8e34c2872", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.1
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_os v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling ndarray-rand v0.9.0
[INFO] [stderr]    Compiling iris-classification v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Array`
[INFO] [stdout]  --> src/model.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::{Array, Array2};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_set`
[INFO] [stdout]   --> src/main.rs:26:21
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let (train_set, test_set) = (train_set.to_vec(), test_set.to_vec());
[INFO] [stdout]    |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_set`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `set_labels`
[INFO] [stdout]   --> src/model.rs:76:52
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn fit(&mut self, training_set: Vec<Iris>, set_labels: Vec<&str>, epochs: usize) {
[INFO] [stdout]    |                                                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_set_labels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_set`
[INFO] [stdout]    --> src/model.rs:132:21
[INFO] [stdout]     |
[INFO] [stdout] 132 |     pub fn evaluate(test_set: Vec<f64>, set_labels: Vec<&str>) -> (usize, usize) {
[INFO] [stdout]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_set`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `set_labels`
[INFO] [stdout]    --> src/model.rs:132:41
[INFO] [stdout]     |
[INFO] [stdout] 132 |     pub fn evaluate(test_set: Vec<f64>, set_labels: Vec<&str>) -> (usize, usize) {
[INFO] [stdout]     |                                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_set_labels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prediction_set`
[INFO] [stdout]    --> src/model.rs:136:23
[INFO] [stdout]     |
[INFO] [stdout] 136 |     pub fn predict<T>(prediction_set: T) -> Array2<f64> {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prediction_set`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `learning_rate`
[INFO] [stdout]    --> src/model.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |         let learning_rate = 0.001;
[INFO] [stdout]     |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_learning_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `beta_1`
[INFO] [stdout]    --> src/model.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let beta_1 = 0.9;
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_beta_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `beta_2`
[INFO] [stdout]    --> src/model.rs:143:13
[INFO] [stdout]     |
[INFO] [stdout] 143 |         let beta_2 = 0.999;
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_beta_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `epsilon`
[INFO] [stdout]    --> src/model.rs:144:13
[INFO] [stdout]     |
[INFO] [stdout] 144 |         let epsilon = 10_f64.powf(-8_f64);
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_epsilon`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/model.rs:107:52
[INFO] [stdout]     |
[INFO] [stdout] 104 |                         match self.layers.last() {
[INFO] [stdout]     |                               ----------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 107 |                                 prediction_error = self.loss(result.neurons.clone(), iris.class.clone());
[INFO] [stdout]     |                                                    ^^^^      -------------- immutable borrow later used here
[INFO] [stdout]     |                                                    |
[INFO] [stdout]     |                                                    mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sigmoid_prime`
[INFO] [stdout]   --> src/layer.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn sigmoid_prime(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `evaluate`
[INFO] [stdout]    --> src/model.rs:132:12
[INFO] [stdout]     |
[INFO] [stdout] 132 |     pub fn evaluate(test_set: Vec<f64>, set_labels: Vec<&str>) -> (usize, usize) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `predict`
[INFO] [stdout]    --> src/model.rs:136:12
[INFO] [stdout]     |
[INFO] [stdout] 136 |     pub fn predict<T>(prediction_set: T) -> Array2<f64> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `adam_optimizer`
[INFO] [stdout]    --> src/model.rs:140:8
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn adam_optimizer(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `gradient_descent`
[INFO] [stdout]    --> src/model.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 |     fn gradient_descent(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mean_squared_error`
[INFO] [stdout]    --> src/model.rs:155:8
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn mean_squared_error(&mut self, prediction: Array2<f64>, target: Array2<f64>) -> Array2<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.58s
[INFO] running `Command { std: "docker" "inspect" "10900e8efd8debcffbe72de9f043d44b6de9a7b20aebcf3b6590b7b8e34c2872", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10900e8efd8debcffbe72de9f043d44b6de9a7b20aebcf3b6590b7b8e34c2872", kill_on_drop: false }`
[INFO] [stdout] 10900e8efd8debcffbe72de9f043d44b6de9a7b20aebcf3b6590b7b8e34c2872
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 284b346e4d21797e18d8260057f322bbc482a94122cec4afce9b5a35630fcc42
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "284b346e4d21797e18d8260057f322bbc482a94122cec4afce9b5a35630fcc42", kill_on_drop: false }`
[INFO] [stderr]    Compiling iris-classification v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Array`
[INFO] [stdout]  --> src/model.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ndarray::{Array, Array2};
[INFO] [stdout]   |               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_set`
[INFO] [stdout]   --> src/main.rs:26:21
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let (train_set, test_set) = (train_set.to_vec(), test_set.to_vec());
[INFO] [stdout]    |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_set`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `set_labels`
[INFO] [stdout]   --> src/model.rs:76:52
[INFO] [stdout]    |
[INFO] [stdout] 76 |     pub fn fit(&mut self, training_set: Vec<Iris>, set_labels: Vec<&str>, epochs: usize) {
[INFO] [stdout]    |                                                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_set_labels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test_set`
[INFO] [stdout]    --> src/model.rs:132:21
[INFO] [stdout]     |
[INFO] [stdout] 132 |     pub fn evaluate(test_set: Vec<f64>, set_labels: Vec<&str>) -> (usize, usize) {
[INFO] [stdout]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_set`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `set_labels`
[INFO] [stdout]    --> src/model.rs:132:41
[INFO] [stdout]     |
[INFO] [stdout] 132 |     pub fn evaluate(test_set: Vec<f64>, set_labels: Vec<&str>) -> (usize, usize) {
[INFO] [stdout]     |                                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_set_labels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prediction_set`
[INFO] [stdout]    --> src/model.rs:136:23
[INFO] [stdout]     |
[INFO] [stdout] 136 |     pub fn predict<T>(prediction_set: T) -> Array2<f64> {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prediction_set`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `learning_rate`
[INFO] [stdout]    --> src/model.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |         let learning_rate = 0.001;
[INFO] [stdout]     |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_learning_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `beta_1`
[INFO] [stdout]    --> src/model.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let beta_1 = 0.9;
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_beta_1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `beta_2`
[INFO] [stdout]    --> src/model.rs:143:13
[INFO] [stdout]     |
[INFO] [stdout] 143 |         let beta_2 = 0.999;
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_beta_2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `epsilon`
[INFO] [stdout]    --> src/model.rs:144:13
[INFO] [stdout]     |
[INFO] [stdout] 144 |         let epsilon = 10_f64.powf(-8_f64);
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_epsilon`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/model.rs:107:52
[INFO] [stdout]     |
[INFO] [stdout] 104 |                         match self.layers.last() {
[INFO] [stdout]     |                               ----------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 107 |                                 prediction_error = self.loss(result.neurons.clone(), iris.class.clone());
[INFO] [stdout]     |                                                    ^^^^      -------------- immutable borrow later used here
[INFO] [stdout]     |                                                    |
[INFO] [stdout]     |                                                    mutable borrow occurs here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sigmoid_prime`
[INFO] [stdout]   --> src/layer.rs:63:8
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn sigmoid_prime(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `evaluate`
[INFO] [stdout]    --> src/model.rs:132:12
[INFO] [stdout]     |
[INFO] [stdout] 132 |     pub fn evaluate(test_set: Vec<f64>, set_labels: Vec<&str>) -> (usize, usize) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `predict`
[INFO] [stdout]    --> src/model.rs:136:12
[INFO] [stdout]     |
[INFO] [stdout] 136 |     pub fn predict<T>(prediction_set: T) -> Array2<f64> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `adam_optimizer`
[INFO] [stdout]    --> src/model.rs:140:8
[INFO] [stdout]     |
[INFO] [stdout] 140 |     fn adam_optimizer(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `gradient_descent`
[INFO] [stdout]    --> src/model.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 |     fn gradient_descent(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mean_squared_error`
[INFO] [stdout]    --> src/model.rs:155:8
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn mean_squared_error(&mut self, prediction: Array2<f64>, target: Array2<f64>) -> Array2<f64> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "284b346e4d21797e18d8260057f322bbc482a94122cec4afce9b5a35630fcc42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "284b346e4d21797e18d8260057f322bbc482a94122cec4afce9b5a35630fcc42", kill_on_drop: false }`
[INFO] [stdout] 284b346e4d21797e18d8260057f322bbc482a94122cec4afce9b5a35630fcc42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 139daa9f658056749124e727570cc5c3e3589c7c0d8c6a5dcb69829ad1aa4baf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "139daa9f658056749124e727570cc5c3e3589c7c0d8c6a5dcb69829ad1aa4baf", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Array`
[INFO] [stderr]  --> src/model.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use ndarray::{Array, Array2};
[INFO] [stderr]   |               ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `test_set`
[INFO] [stderr]   --> src/main.rs:26:21
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let (train_set, test_set) = (train_set.to_vec(), test_set.to_vec());
[INFO] [stderr]    |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_set`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `set_labels`
[INFO] [stderr]   --> src/model.rs:76:52
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn fit(&mut self, training_set: Vec<Iris>, set_labels: Vec<&str>, epochs: usize) {
[INFO] [stderr]    |                                                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_set_labels`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `test_set`
[INFO] [stderr]    --> src/model.rs:132:21
[INFO] [stderr]     |
[INFO] [stderr] 132 |     pub fn evaluate(test_set: Vec<f64>, set_labels: Vec<&str>) -> (usize, usize) {
[INFO] [stderr]     |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_test_set`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `set_labels`
[INFO] [stderr]    --> src/model.rs:132:41
[INFO] [stderr]     |
[INFO] [stderr] 132 |     pub fn evaluate(test_set: Vec<f64>, set_labels: Vec<&str>) -> (usize, usize) {
[INFO] [stderr]     |                                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_set_labels`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prediction_set`
[INFO] [stderr]    --> src/model.rs:136:23
[INFO] [stderr]     |
[INFO] [stderr] 136 |     pub fn predict<T>(prediction_set: T) -> Array2<f64> {
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prediction_set`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `learning_rate`
[INFO] [stderr]    --> src/model.rs:141:13
[INFO] [stderr]     |
[INFO] [stderr] 141 |         let learning_rate = 0.001;
[INFO] [stderr]     |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_learning_rate`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `beta_1`
[INFO] [stderr]    --> src/model.rs:142:13
[INFO] [stderr]     |
[INFO] [stderr] 142 |         let beta_1 = 0.9;
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_beta_1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `beta_2`
[INFO] [stderr]    --> src/model.rs:143:13
[INFO] [stderr]     |
[INFO] [stderr] 143 |         let beta_2 = 0.999;
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_beta_2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `epsilon`
[INFO] [stderr]    --> src/model.rs:144:13
[INFO] [stderr]     |
[INFO] [stderr] 144 |         let epsilon = 10_f64.powf(-8_f64);
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_epsilon`
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/model.rs:107:52
[INFO] [stderr]     |
[INFO] [stderr] 104 |                         match self.layers.last() {
[INFO] [stderr]     |                               ----------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 107 |                                 prediction_error = self.loss(result.neurons.clone(), iris.class.clone());
[INFO] [stderr]     |                                                    ^^^^      -------------- immutable borrow later used here
[INFO] [stderr]     |                                                    |
[INFO] [stderr]     |                                                    mutable borrow occurs here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `sigmoid_prime`
[INFO] [stderr]   --> src/layer.rs:63:8
[INFO] [stderr]    |
[INFO] [stderr] 63 |     fn sigmoid_prime(&mut self) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `evaluate`
[INFO] [stderr]    --> src/model.rs:132:12
[INFO] [stderr]     |
[INFO] [stderr] 132 |     pub fn evaluate(test_set: Vec<f64>, set_labels: Vec<&str>) -> (usize, usize) {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `predict`
[INFO] [stderr]    --> src/model.rs:136:12
[INFO] [stderr]     |
[INFO] [stderr] 136 |     pub fn predict<T>(prediction_set: T) -> Array2<f64> {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `adam_optimizer`
[INFO] [stderr]    --> src/model.rs:140:8
[INFO] [stderr]     |
[INFO] [stderr] 140 |     fn adam_optimizer(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `gradient_descent`
[INFO] [stderr]    --> src/model.rs:147:8
[INFO] [stderr]     |
[INFO] [stderr] 147 |     fn gradient_descent(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `mean_squared_error`
[INFO] [stderr]    --> src/model.rs:155:8
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn mean_squared_error(&mut self, prediction: Array2<f64>, target: Array2<f64>) -> Array2<f64> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/iris_classification-8fb853e7feee08c7
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "139daa9f658056749124e727570cc5c3e3589c7c0d8c6a5dcb69829ad1aa4baf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "139daa9f658056749124e727570cc5c3e3589c7c0d8c6a5dcb69829ad1aa4baf", kill_on_drop: false }`
[INFO] [stdout] 139daa9f658056749124e727570cc5c3e3589c7c0d8c6a5dcb69829ad1aa4baf
