[INFO] fetching crate prophet 0.4.2...
[INFO] checking prophet-0.4.2 against master#4eb62535fc12dd1a63fd43a4173e224e79313c4d for pr-158816
[INFO] extracting crate prophet 0.4.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate prophet 0.4.2
[INFO] finished tweaking crates.io crate prophet 0.4.2
[INFO] tweaked toml for crates.io crate prophet 0.4.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate prophet 0.4.2 on toolchain 4eb62535fc12dd1a63fd43a4173e224e79313c4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 36 packages to latest compatible versions
[INFO] [stderr]       Adding approx v0.1.1 (available: v0.5.1)
[INFO] [stderr]       Adding itertools v0.7.11 (available: v0.15.0)
[INFO] [stderr]       Adding log v0.3.9 (available: v0.4.33)
[INFO] [stderr]       Adding ndarray v0.10.14 (available: v0.17.2)
[INFO] [stderr]       Adding ndarray-rand v0.6.1 (available: v0.16.0)
[INFO] [stderr]       Adding num v0.1.43 (available: v0.4.3)
[INFO] [stderr]       Adding rand v0.3.23 (available: v0.10.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `prophet` (manifest) generated 1 warning
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-bigint v0.1.45
[INFO] [stderr]   Downloaded ndarray-rand v0.6.1
[INFO] [stderr]   Downloaded num-complex v0.1.44
[INFO] [stderr]   Downloaded rawpointer v0.1.0
[INFO] [stderr]   Downloaded matrixmultiply v0.1.15
[INFO] [stderr]   Downloaded approx v0.1.1
[INFO] [stderr]   Downloaded num-rational v0.1.43
[INFO] [stderr]   Downloaded ndarray v0.10.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 90f649f2c17a08e60d3560dd56b69750d4422f83067642620d23b14c5297a0d9
[INFO] running `Command { std: "docker" "start" "90f649f2c17a08e60d3560dd56b69750d4422f83067642620d23b14c5297a0d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90f649f2c17a08e60d3560dd56b69750d4422f83067642620d23b14c5297a0d9", 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" "90f649f2c17a08e60d3560dd56b69750d4422f83067642620d23b14c5297a0d9" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90f649f2c17a08e60d3560dd56b69750d4422f83067642620d23b14c5297a0d9", 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=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "90f649f2c17a08e60d3560dd56b69750d4422f83067642620d23b14c5297a0d9" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `prophet` (manifest) generated 1 warning
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]    Compiling num-complex v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.1.45
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling num-rational v0.1.43
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling ndarray v0.10.14
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-iter v0.1.46
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking num v0.1.43
[INFO] [stderr]     Checking ndarray-rand v0.6.1
[INFO] [stderr]     Checking prophet v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Criterion`, `LogConfig`, and `Scheduling`
[INFO] [stdout]  --> src/mentor/mod.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use mentor::configs::{LogConfig, Scheduling, Criterion};
[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 imports: `MentorBuilder` and `Mentor`
[INFO] [stdout]  --> src/mentor/mod.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub use mentor::training::{Mentor, MentorBuilder};
[INFO] [stdout]   |                            ^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SampleView` and `Sample`
[INFO] [stdout]   --> src/mentor/mod.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use mentor::samples::{Sample, SampleView};
[INFO] [stdout]    |                           ^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Criterion`, `LogConfig`, and `Scheduling`
[INFO] [stdout]  --> src/mentor/mod.rs:8:27
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use mentor::configs::{LogConfig, Scheduling, Criterion};
[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 imports: `MentorBuilder` and `Mentor`
[INFO] [stdout]  --> src/mentor/mod.rs:9:28
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub use mentor::training::{Mentor, MentorBuilder};
[INFO] [stdout]   |                            ^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SampleView` and `Sample`
[INFO] [stdout]   --> src/mentor/mod.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub use mentor::samples::{Sample, SampleView};
[INFO] [stdout]    |                           ^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `elapsed_time`, `latest_mse`, and `recent_mse` are never read
[INFO] [stdout]   --> src/mentor/logger.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct Stats {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     pub elapsed_time: Duration,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub latest_mse  : f64,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub recent_mse  : f64
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stats` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/traits.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn predict(&mut self, input: I) -> ArrayView1<f32>;
[INFO] [stdout]    |                ^^^^^^^^^               ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn predict(&mut self, input: I) -> ArrayView1<'_, f32>;
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/neural_net.rs:139:17
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn output_view(&self) -> ArrayView1<f32> {
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn output_view(&self) -> ArrayView1<'_, f32> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/neural_net.rs:161:18
[INFO] [stdout]     |
[INFO] [stdout] 161 |     fn feed_forward(&mut self,
[INFO] [stdout]     |                     ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 162 |                     input: ArrayView1<f32>)
[INFO] [stdout] 163 |                     -> ArrayView1<f32> {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 163 |                     -> ArrayView1<'_, f32> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/neural_net.rs:251:20
[INFO] [stdout]     |
[INFO] [stdout] 251 |     fn update_weights(&mut self,
[INFO] [stdout]     |                       ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] ...
[INFO] [stdout] 255 |                       -> ArrayView1<f32> {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 255 |                       -> ArrayView1<'_, f32> {
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/neural_net.rs:328:13
[INFO] [stdout]     |
[INFO] [stdout] 328 |     fn predict(&mut self, input: A) -> ArrayView1<f32> {
[INFO] [stdout]     |                ^^^^^^^^^               ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                |
[INFO] [stdout]     |                the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 328 |     fn predict(&mut self, input: A) -> ArrayView1<'_, f32> {
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/topology.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn iter_layers(&self) -> Iter<Layer> {
[INFO] [stdout]    |                        ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn iter_layers(&self) -> Iter<'_, Layer> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/mentor/samples.rs:230:21
[INFO] [stdout]     |
[INFO] [stdout] 230 |     pub fn next_sample(&mut self) -> SampleView {
[INFO] [stdout]     |                        ^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 230 |     pub fn next_sample(&mut self) -> SampleView<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `elapsed_time`, `latest_mse`, and `recent_mse` are never read
[INFO] [stdout]   --> src/mentor/logger.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct Stats {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     pub elapsed_time: Duration,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub latest_mse  : f64,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     pub recent_mse  : f64
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stats` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/traits.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn predict(&mut self, input: I) -> ArrayView1<f32>;
[INFO] [stdout]    |                ^^^^^^^^^               ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn predict(&mut self, input: I) -> ArrayView1<'_, f32>;
[INFO] [stdout]    |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/neural_net.rs:139:17
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn output_view(&self) -> ArrayView1<f32> {
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn output_view(&self) -> ArrayView1<'_, f32> {
[INFO] [stdout]     |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/neural_net.rs:146:20
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn gradients_view(&self) -> ArrayView1<f32> {
[INFO] [stdout]     |                       ^^^^^     ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 146 |     fn gradients_view(&self) -> ArrayView1<'_, f32> {
[INFO] [stdout]     |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/neural_net.rs:161:18
[INFO] [stdout]     |
[INFO] [stdout] 161 |     fn feed_forward(&mut self,
[INFO] [stdout]     |                     ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] 162 |                     input: ArrayView1<f32>)
[INFO] [stdout] 163 |                     -> ArrayView1<f32> {
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 163 |                     -> ArrayView1<'_, f32> {
[INFO] [stdout]     |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/neural_net.rs:251:20
[INFO] [stdout]     |
[INFO] [stdout] 251 |     fn update_weights(&mut self,
[INFO] [stdout]     |                       ^^^^^^^^^ the lifetime is elided here
[INFO] [stdout] ...
[INFO] [stdout] 255 |                       -> ArrayView1<f32> {
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 255 |                       -> ArrayView1<'_, f32> {
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/neural_net.rs:328:13
[INFO] [stdout]     |
[INFO] [stdout] 328 |     fn predict(&mut self, input: A) -> ArrayView1<f32> {
[INFO] [stdout]     |                ^^^^^^^^^               ^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                |
[INFO] [stdout]     |                the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 328 |     fn predict(&mut self, input: A) -> ArrayView1<'_, f32> {
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `to_owned` that must be used
[INFO] [stdout]    --> src/neural_net.rs:418:4
[INFO] [stdout]     |
[INFO] [stdout] 418 |             layer.calculate_output_gradients(expected.view()).to_owned();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 418 |             let _ = layer.calculate_output_gradients(expected.view()).to_owned();
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/topology.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn iter_layers(&self) -> Iter<Layer> {
[INFO] [stdout]    |                        ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn iter_layers(&self) -> Iter<'_, Layer> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/mentor/samples.rs:230:21
[INFO] [stdout]     |
[INFO] [stdout] 230 |     pub fn next_sample(&mut self) -> SampleView {
[INFO] [stdout]     |                        ^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 230 |     pub fn next_sample(&mut self) -> SampleView<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.56s
[INFO] running `Command { std: "docker" "inspect" "90f649f2c17a08e60d3560dd56b69750d4422f83067642620d23b14c5297a0d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90f649f2c17a08e60d3560dd56b69750d4422f83067642620d23b14c5297a0d9", kill_on_drop: false }`
[INFO] [stdout] 90f649f2c17a08e60d3560dd56b69750d4422f83067642620d23b14c5297a0d9
