[INFO] cloning repository https://github.com/corlessg/neural_net
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/corlessg/neural_net" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcorlessg%2Fneural_net", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcorlessg%2Fneural_net'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 94a614bd5f35237faa0e8c13df4c0c4b2551c84e
[INFO] fixing corlessg/neural_net against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=end=2015,2024 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcorlessg%2Fneural_net" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/corlessg/neural_net
[INFO] finished tweaking git repo https://github.com/corlessg/neural_net
[INFO] tweaked toml for git repo https://github.com/corlessg/neural_net written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/corlessg/neural_net on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/corlessg/neural_net 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c9297fef7993488afa49c8e02a3eb7b3e6acb06aef9738e5de6706b88e248bdd
[INFO] running `Command { std: "docker" "start" "c9297fef7993488afa49c8e02a3eb7b3e6acb06aef9738e5de6706b88e248bdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c9297fef7993488afa49c8e02a3eb7b3e6acb06aef9738e5de6706b88e248bdd" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9297fef7993488afa49c8e02a3eb7b3e6acb06aef9738e5de6706b88e248bdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c9297fef7993488afa49c8e02a3eb7b3e6acb06aef9738e5de6706b88e248bdd" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=end=2015,2024", kill_on_drop: false }`
[INFO] [stderr] crater-edition-check: migrating to next edition
[INFO] [stderr]    Migrating Cargo.toml from 2021 edition to 2024
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling libc v0.2.170
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling matrixmultiply v0.3.9
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling quote v1.0.39
[INFO] [stderr]    Compiling syn v2.0.99
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking ndarray v0.16.1
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking neural_net v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Migrating src/lib.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/main.rs from 2021 edition to 2024
[INFO] [stdout] warning: relative drop order changing in Rust 2024
[INFO] [stdout]    --> src/main.rs:85:22
[INFO] [stdout]     |
[INFO] [stdout]  73 |                 let delta2 = deltas.clone();
[INFO] [stdout]     |                     ------
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     `delta2` calls a custom destructor
[INFO] [stdout]     |                     `delta2` will be dropped later as of Edition 2024
[INFO] [stdout] ...
[INFO] [stdout]  82 |                     let val = _current_layer.weights.dot(&delta2[l]) * &activations[l].mapv(sigmoid_derivative);
[INFO] [stdout]     |                         ---
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         `val` calls a custom destructor
[INFO] [stdout]     |                         `val` will be dropped later as of Edition 2024
[INFO] [stdout] ...
[INFO] [stdout]  85 |                     &(_current_layer.weights.dot(&delta2[l+1]) * &activations[l+1].mapv(sigmoid_derivative))
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-----------------------------------------^
[INFO] [stdout]     |                      |                                            |
[INFO] [stdout]     |                      |                                            this value will be stored in a temporary; let us call it `#2`
[INFO] [stdout]     |                      |                                            up until Edition 2021 `#2` is dropped last but will be dropped earlier in Edition 2024
[INFO] [stdout]     |                      this value will be stored in a temporary; let us call it `#1`
[INFO] [stdout]     |                      up until Edition 2021 `#1` is dropped last but will be dropped earlier in Edition 2024
[INFO] [stdout]  86 |                 })
[INFO] [stdout]  87 |             }
[INFO] [stdout]     |             - now the temporary value is dropped here, before the local variables in the block or statement
[INFO] [stdout]     |
[INFO] [stdout] note: `#1` invokes this custom destructor
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ndarray-0.16.1/src/data_repr.rs:164:1
[INFO] [stdout]     |
[INFO] [stdout] 164 | impl<A> Drop for OwnedRepr<A>
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: `#2` invokes this custom destructor
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ndarray-0.16.1/src/data_repr.rs:164:1
[INFO] [stdout]     |
[INFO] [stdout] 164 | impl<A> Drop for OwnedRepr<A>
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: `delta2` invokes this custom destructor
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ndarray-0.16.1/src/data_repr.rs:164:1
[INFO] [stdout]     |
[INFO] [stdout] 164 | impl<A> Drop for OwnedRepr<A>
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: `val` invokes this custom destructor
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ndarray-0.16.1/src/data_repr.rs:164:1
[INFO] [stdout]     |
[INFO] [stdout] 164 | impl<A> Drop for OwnedRepr<A>
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: most of the time, changing drop order is harmless; inspect the `impl Drop`s for side effects like releasing locks or sending messages
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/temporary-tail-expr-scope.html>
[INFO] [stdout]     = note: `--force-warn tail-expr-drop-order` implied by `--force-warn rust-2024-compatibility`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: relative drop order changing in Rust 2024
[INFO] [stdout]   --> src/main.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 deltas[l].assign( {
[INFO] [stdout]    |                           ------ borrow later used by call
[INFO] [stdout] ...
[INFO] [stdout] 85 |                     &(_current_layer.weights.dot(&delta2[l+1]) * &activations[l+1].mapv(sigmoid_derivative))
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this temporary value will be dropped at the end of the block
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/temporary-tail-expr-scope.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: relative drop order changing in Rust 2024
[INFO] [stdout]    --> src/main.rs:85:22
[INFO] [stdout]     |
[INFO] [stdout]  73 |                 let delta2 = deltas.clone();
[INFO] [stdout]     |                     ------
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     `delta2` calls a custom destructor
[INFO] [stdout]     |                     `delta2` will be dropped later as of Edition 2024
[INFO] [stdout] ...
[INFO] [stdout]  82 |                     let val = _current_layer.weights.dot(&delta2[l]) * &activations[l].mapv(sigmoid_derivative);
[INFO] [stdout]     |                         ---
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         `val` calls a custom destructor
[INFO] [stdout]     |                         `val` will be dropped later as of Edition 2024
[INFO] [stdout] ...
[INFO] [stdout]  85 |                     &(_current_layer.weights.dot(&delta2[l+1]) * &activations[l+1].mapv(sigmoid_derivative))
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-----------------------------------------^
[INFO] [stdout]     |                      |                                            |
[INFO] [stdout]     |                      |                                            this value will be stored in a temporary; let us call it `#2`
[INFO] [stdout]     |                      |                                            up until Edition 2021 `#2` is dropped last but will be dropped earlier in Edition 2024
[INFO] [stdout]     |                      this value will be stored in a temporary; let us call it `#1`
[INFO] [stdout]     |                      up until Edition 2021 `#1` is dropped last but will be dropped earlier in Edition 2024
[INFO] [stdout]  86 |                 })
[INFO] [stdout]  87 |             }
[INFO] [stdout]     |             - now the temporary value is dropped here, before the local variables in the block or statement
[INFO] [stdout]     |
[INFO] [stdout] note: `#1` invokes this custom destructor
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ndarray-0.16.1/src/data_repr.rs:164:1
[INFO] [stdout]     |
[INFO] [stdout] 164 | impl<A> Drop for OwnedRepr<A>
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: `#2` invokes this custom destructor
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ndarray-0.16.1/src/data_repr.rs:164:1
[INFO] [stdout]     |
[INFO] [stdout] 164 | impl<A> Drop for OwnedRepr<A>
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: `delta2` invokes this custom destructor
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ndarray-0.16.1/src/data_repr.rs:164:1
[INFO] [stdout]     |
[INFO] [stdout] 164 | impl<A> Drop for OwnedRepr<A>
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] note: `val` invokes this custom destructor
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/ndarray-0.16.1/src/data_repr.rs:164:1
[INFO] [stdout]     |
[INFO] [stdout] 164 | impl<A> Drop for OwnedRepr<A>
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: most of the time, changing drop order is harmless; inspect the `impl Drop`s for side effects like releasing locks or sending messages
[INFO] [stdout]     = warning: this changes meaning in Rust 2024
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/temporary-tail-expr-scope.html>
[INFO] [stdout]     = note: `--force-warn tail-expr-drop-order` implied by `--force-warn rust-2024-compatibility`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: relative drop order changing in Rust 2024
[INFO] [stdout]   --> src/main.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 deltas[l].assign( {
[INFO] [stdout]    |                           ------ borrow later used by call
[INFO] [stdout] ...
[INFO] [stdout] 85 |                     &(_current_layer.weights.dot(&delta2[l+1]) * &activations[l+1].mapv(sigmoid_derivative))
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this temporary value will be dropped at the end of the block
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/temporary-tail-expr-scope.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.06s
[INFO] [stderr] crater-edition-check: neural_net v0.1.0 (/opt/rustwide/workdir) updating edition from 2021 to 2024
[INFO] [stderr]     Checking neural_net v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/main.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use neural_net::utils::{self, sigmoid, sigmoid_derivative};
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sync::Arc`
[INFO] [stdout]  --> src/main.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{sync::Arc, time::Instant};
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/main.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 | use neural_net::utils::{self, sigmoid, sigmoid_derivative};
[INFO] [stdout]   |                         ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sync::Arc`
[INFO] [stdout]  --> src/main.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{sync::Arc, time::Instant};
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]   --> src/main.rs:85:22
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 deltas[l].assign( {
[INFO] [stdout]    |                           ------ borrow later used by call
[INFO] [stdout] ...
[INFO] [stdout] 85 |                     &(_current_layer.weights.dot(&delta2[l+1]) * &activations[l+1].mapv(sigmoid_derivative))
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
[INFO] [stdout]    |                      |                                                                                     |
[INFO] [stdout]    |                      |                                                                                     temporary value is freed at the end of this statement
[INFO] [stdout]    |                      creates a temporary value which is freed while still in use
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next_layer`
[INFO] [stdout]   --> src/main.rs:70:44
[INFO] [stdout]    |
[INFO] [stdout] 70 |             .for_each(|(l, (_current_layer,next_layer))| {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_layer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `learning_rate`
[INFO] [stdout]   --> src/main.rs:40:52
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn cycle(&self, input: &[f64], target: &[f64], learning_rate: f64) -> () {
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_learning_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `forward_result`
[INFO] [stdout]    --> src/main.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |     let forward_result = layer.forward(&input);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_forward_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0716`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `neural_net` (bin "neural_net" test) due to 1 previous error; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]   --> src/main.rs:85:22
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 deltas[l].assign( {
[INFO] [stdout]    |                           ------ borrow later used by call
[INFO] [stdout] ...
[INFO] [stdout] 85 |                     &(_current_layer.weights.dot(&delta2[l+1]) * &activations[l+1].mapv(sigmoid_derivative))
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
[INFO] [stdout]    |                      |                                                                                     |
[INFO] [stdout]    |                      |                                                                                     temporary value is freed at the end of this statement
[INFO] [stdout]    |                      creates a temporary value which is freed while still in use
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next_layer`
[INFO] [stdout]   --> src/main.rs:70:44
[INFO] [stdout]    |
[INFO] [stdout] 70 |             .for_each(|(l, (_current_layer,next_layer))| {
[INFO] [stdout]    |                                            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next_layer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `learning_rate`
[INFO] [stdout]   --> src/main.rs:40:52
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn cycle(&self, input: &[f64], target: &[f64], learning_rate: f64) -> () {
[INFO] [stdout]    |                                                    ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_learning_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `forward_result`
[INFO] [stdout]    --> src/main.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |     let forward_result = layer.forward(&input);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_forward_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0716`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `neural_net` (bin "neural_net") due to 1 previous error; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "c9297fef7993488afa49c8e02a3eb7b3e6acb06aef9738e5de6706b88e248bdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9297fef7993488afa49c8e02a3eb7b3e6acb06aef9738e5de6706b88e248bdd", kill_on_drop: false }`
[INFO] [stdout] c9297fef7993488afa49c8e02a3eb7b3e6acb06aef9738e5de6706b88e248bdd
