[INFO] updating cached repository HibikineKage/ray-trace
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/HibikineKage/ray-trace
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/HibikineKage/ray-trace" "work/ex/clippy-test-run/sources/stable/gh/HibikineKage/ray-trace"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/HibikineKage/ray-trace'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/HibikineKage/ray-trace" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/HibikineKage/ray-trace"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/HibikineKage/ray-trace'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 056d0d96e9b6c6eb91ff1cb5a21d05ecd3fcc3ad
[INFO] sha for GitHub repo HibikineKage/ray-trace: 056d0d96e9b6c6eb91ff1cb5a21d05ecd3fcc3ad
[INFO] validating manifest of HibikineKage/ray-trace on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of HibikineKage/ray-trace on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing HibikineKage/ray-trace
[INFO] finished frobbing HibikineKage/ray-trace
[INFO] frobbed toml for HibikineKage/ray-trace written to work/ex/clippy-test-run/sources/stable/gh/HibikineKage/ray-trace/Cargo.toml
[INFO] started frobbing HibikineKage/ray-trace
[INFO] finished frobbing HibikineKage/ray-trace
[INFO] frobbed toml for HibikineKage/ray-trace written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/HibikineKage/ray-trace/Cargo.toml
[INFO] crate HibikineKage/ray-trace has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting HibikineKage/ray-trace against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/HibikineKage/ray-trace:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c3906130114f9a6d9f71e9d3ceb1d42b393d92df272166f6d80af82fc73ad80e
[INFO] running `"docker" "start" "-a" "c3906130114f9a6d9f71e9d3ceb1d42b393d92df272166f6d80af82fc73ad80e"`
[INFO] [stderr]     Checking rayon-core v1.4.0
[INFO] [stderr]     Checking nalgebra v0.14.0
[INFO] [stderr]     Checking rayon v1.0.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.14
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking ray-trace v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ray.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |         Self { t: t, p: p, n: n }
[INFO] [stderr]    |                ^^^^ help: replace it with: `t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ray.rs:11:22
[INFO] [stderr]    |
[INFO] [stderr] 11 |         Self { t: t, p: p, n: n }
[INFO] [stderr]    |                      ^^^^ help: replace it with: `p`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ray.rs:11:28
[INFO] [stderr]    |
[INFO] [stderr] 11 |         Self { t: t, p: p, n: n }
[INFO] [stderr]    |                            ^^^^ help: replace it with: `n`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ray.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |             origin: origin,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `origin`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ray.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |             direction: direction,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `direction`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/sphere.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |         let d = b * b - 4f32 * a * c;
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/sphere.rs:33:25
[INFO] [stderr]    |
[INFO] [stderr] 33 |                     let t = (-b - root) / (2.0f32 * a);
[INFO] [stderr]    |                         ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]   --> src/sphere.rs:35:29
[INFO] [stderr]    |
[INFO] [stderr] 35 |                         let p = r.at(&t);
[INFO] [stderr]    |                             ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/sphere.rs:40:25
[INFO] [stderr]    |
[INFO] [stderr] 40 |                     let t = (-b + root) / (2.0f32 * a);
[INFO] [stderr]    |                         ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]   --> src/sphere.rs:42:29
[INFO] [stderr]    |
[INFO] [stderr] 42 |                         let p = r.at(&t);
[INFO] [stderr]    |                             ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:126:13
[INFO] [stderr]     |
[INFO] [stderr] 126 |             camera: camera,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^ help: replace it with: `camera`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:165:13
[INFO] [stderr]     |
[INFO] [stderr] 165 |             samples: samples,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: replace it with: `samples`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ray.rs:11:16
[INFO] [stderr]    |
[INFO] [stderr] 11 |         Self { t: t, p: p, n: n }
[INFO] [stderr]    |                ^^^^ help: replace it with: `t`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ray.rs:11:22
[INFO] [stderr]    |
[INFO] [stderr] 11 |         Self { t: t, p: p, n: n }
[INFO] [stderr]    |                      ^^^^ help: replace it with: `p`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ray.rs:11:28
[INFO] [stderr]    |
[INFO] [stderr] 11 |         Self { t: t, p: p, n: n }
[INFO] [stderr]    |                            ^^^^ help: replace it with: `n`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ray.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |             origin: origin,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `origin`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/ray.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |             direction: direction,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `direction`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: 5th binding whose name is just one char
[INFO] [stderr]   --> src/sphere.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |         let d = b * b - 4f32 * a * c;
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::many_single_char_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/sphere.rs:33:25
[INFO] [stderr]    |
[INFO] [stderr] 33 |                     let t = (-b - root) / (2.0f32 * a);
[INFO] [stderr]    |                         ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]   --> src/sphere.rs:35:29
[INFO] [stderr]    |
[INFO] [stderr] 35 |                         let p = r.at(&t);
[INFO] [stderr]    |                             ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 6th binding whose name is just one char
[INFO] [stderr]   --> src/sphere.rs:40:25
[INFO] [stderr]    |
[INFO] [stderr] 40 |                     let t = (-b + root) / (2.0f32 * a);
[INFO] [stderr]    |                         ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: 7th binding whose name is just one char
[INFO] [stderr]   --> src/sphere.rs:42:29
[INFO] [stderr]    |
[INFO] [stderr] 42 |                         let p = r.at(&t);
[INFO] [stderr]    |                             ^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#many_single_char_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:126:13
[INFO] [stderr]     |
[INFO] [stderr] 126 |             camera: camera,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^ help: replace it with: `camera`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/main.rs:165:13
[INFO] [stderr]     |
[INFO] [stderr] 165 |             samples: samples,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: replace it with: `samples`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::f32::consts::LOG2_E as LOG2`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::f32::consts::LOG2_E as LOG2;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::f32::MAX as F32_MAX`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::f32::MAX as F32_MAX;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::f32::MIN as F32_MIN`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::f32::MIN as F32_MIN;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rayon::prelude::*`
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use rayon::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PI2`
[INFO] [stderr]   --> src/main.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | const PI2: f32 = PI * 2f32;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `RECIP_PI2`
[INFO] [stderr]   --> src/main.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | const RECIP_PI2: f32 = RECIP_PI / 2f32;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EPSILON`
[INFO] [stderr]   --> src/main.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | const EPSILON: f32 = 1e-6;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `GAMMA_FACTOR`
[INFO] [stderr]   --> src/main.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | const GAMMA_FACTOR: f32 = 2.2;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `origin`
[INFO] [stderr]   --> src/camera.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn origin(&mut self, origin: Vector3<f32>) -> &mut CameraUVWBuilder {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CameraLookAtBuilder`
[INFO] [stderr]   --> src/camera.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | pub struct CameraLookAtBuilder {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/camera.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn new() -> CameraLookAtBuilder {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `lookfrom`
[INFO] [stderr]   --> src/camera.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn lookfrom(&mut self, lookfrom: Vector3<f32>) -> &mut Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `lookat`
[INFO] [stderr]   --> src/camera.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     pub fn lookat(&mut self, lookat: Vector3<f32>) -> &mut Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `vup`
[INFO] [stderr]   --> src/camera.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub fn vup(&mut self, vup: Vector3<f32>) -> &mut Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `vfov`
[INFO] [stderr]   --> src/camera.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     pub fn vfov(&mut self, vfov: f32) -> &mut Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `aspect`
[INFO] [stderr]   --> src/camera.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     pub fn aspect(&mut self, aspect: f32) -> &mut Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `finalize`
[INFO] [stderr]   --> src/camera.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn finalize(&self) -> Camera {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pow3`
[INFO] [stderr]   --> src/main.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn pow3(x: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pow4`
[INFO] [stderr]   --> src/main.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn pow4(x: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pow5`
[INFO] [stderr]   --> src/main.rs:46:1
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn pow5(x: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clamp`
[INFO] [stderr]   --> src/main.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn clamp(x: &f32, min: &f32, max: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `saturate`
[INFO] [stderr]   --> src/main.rs:58:1
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn saturate(x: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `recip`
[INFO] [stderr]   --> src/main.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn recip(x: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mix`
[INFO] [stderr]   --> src/main.rs:66:1
[INFO] [stderr]    |
[INFO] [stderr] 66 | fn mix(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `step`
[INFO] [stderr]   --> src/main.rs:70:1
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn step(edge: &f32, x: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `smoothstep`
[INFO] [stderr]   --> src/main.rs:77:1
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn smoothstep(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `radians`
[INFO] [stderr]   --> src/main.rs:87:1
[INFO] [stderr]    |
[INFO] [stderr] 87 | fn radians(deg: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `degrees`
[INFO] [stderr]   --> src/main.rs:91:1
[INFO] [stderr]    |
[INFO] [stderr] 91 | fn degrees(rad: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/camera.rs:10:30
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn get_ray(&self, u: &f32, v: &f32) -> Ray {
[INFO] [stderr]    |                              ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/camera.rs:10:39
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn get_ray(&self, u: &f32, v: &f32) -> Ray {
[INFO] [stderr]    |                                       ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: variable `halfH` should have a snake case name such as `half_h`
[INFO] [stderr]   --> src/camera.rs:96:13
[INFO] [stderr]    |
[INFO] [stderr] 96 |         let halfH = (self.vfov.to_radians() / 2f32).tan();
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `halfW` should have a snake case name such as `half_w`
[INFO] [stderr]   --> src/camera.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 |         let halfW = self.aspect * halfH;
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/ray.rs:27:25
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn at(&self, t: &f32) -> Vector3<f32> {
[INFO] [stderr]    |                         ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/sphere.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 | /         match d > 0f32 {
[INFO] [stderr] 29 | |             false => None,
[INFO] [stderr] 30 | |             true => {
[INFO] [stderr] 31 | |                 let root = d.sqrt();
[INFO] [stderr] ...  |
[INFO] [stderr] 47 | |             }
[INFO] [stderr] 48 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_bool
[INFO] [stderr] help: consider using an if/else expression
[INFO] [stderr]    |
[INFO] [stderr] 28 |         if d > 0f32 {
[INFO] [stderr] 29 |     let root = d.sqrt();
[INFO] [stderr] 30 |     {
[INFO] [stderr] 31 |         let t = (-b - root) / (2.0f32 * a);
[INFO] [stderr] 32 |         if t < t1 && t > t0 {
[INFO] [stderr] 33 |             let p = r.at(&t);
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 | fn pow2(x: &f32) -> f32 {
[INFO] [stderr]    |            ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:38:12
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn pow3(x: &f32) -> f32 {
[INFO] [stderr]    |            ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:42:12
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn pow4(x: &f32) -> f32 {
[INFO] [stderr]    |            ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:46:12
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn pow5(x: &f32) -> f32 {
[INFO] [stderr]    |            ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn clamp(x: &f32, min: &f32, max: &f32) -> f32 {
[INFO] [stderr]    |             ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:50:24
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn clamp(x: &f32, min: &f32, max: &f32) -> f32 {
[INFO] [stderr]    |                        ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:50:35
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn clamp(x: &f32, min: &f32, max: &f32) -> f32 {
[INFO] [stderr]    |                                   ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:52:25
[INFO] [stderr]    |
[INFO] [stderr] 52 |         _ if x > min => min.clone(),
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: try dereferencing it: `*min`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:53:25
[INFO] [stderr]    |
[INFO] [stderr] 53 |         _ if x < max => max.clone(),
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: try dereferencing it: `*max`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:54:14
[INFO] [stderr]    |
[INFO] [stderr] 54 |         _ => x.clone(),
[INFO] [stderr]    |              ^^^^^^^^^ help: try dereferencing it: `*x`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:58:16
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn saturate(x: &f32) -> f32 {
[INFO] [stderr]    |                ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn recip(x: &f32) -> f32 {
[INFO] [stderr]    |             ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:66:11
[INFO] [stderr]    |
[INFO] [stderr] 66 | fn mix(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    |           ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:66:20
[INFO] [stderr]    |
[INFO] [stderr] 66 | fn mix(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    |                    ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:66:29
[INFO] [stderr]    |
[INFO] [stderr] 66 | fn mix(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    |                             ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:70:15
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn step(edge: &f32, x: &f32) -> f32 {
[INFO] [stderr]    |               ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:70:24
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn step(edge: &f32, x: &f32) -> f32 {
[INFO] [stderr]    |                        ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/main.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 | /     match x < edge {
[INFO] [stderr] 72 | |         true => 0f32,
[INFO] [stderr] 73 | |         false => 1f32,
[INFO] [stderr] 74 | |     }
[INFO] [stderr]    | |_____^ help: consider using an if/else expression: `if x < edge { 0f32 } else { 1f32 }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:77:18
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn smoothstep(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    |                  ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:77:27
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn smoothstep(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    |                           ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:77:36
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn smoothstep(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    |                                    ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/main.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 | /     match a >= b {
[INFO] [stderr] 79 | |         true => 0f32,
[INFO] [stderr] 80 | |         false => {
[INFO] [stderr] 81 | |             let x = saturate(&((t - a) / (b - a)));
[INFO] [stderr] 82 | |             x * x * (3f32 - 2f32 * t)
[INFO] [stderr] 83 | |         }
[INFO] [stderr] 84 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_bool
[INFO] [stderr] help: consider using an if/else expression
[INFO] [stderr]    |
[INFO] [stderr] 78 |     if a >= b { 0f32 } else {
[INFO] [stderr] 79 |     let x = saturate(&((t - a) / (b - a)));
[INFO] [stderr] 80 |     x * x * (3f32 - 2f32 * t)
[INFO] [stderr] 81 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:87:17
[INFO] [stderr]    |
[INFO] [stderr] 87 | fn radians(deg: &f32) -> f32 {
[INFO] [stderr]    |                 ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:91:17
[INFO] [stderr]    |
[INFO] [stderr] 91 | fn degrees(rad: &f32) -> f32 {
[INFO] [stderr]    |                 ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:95:12
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn lerp(t: &f32, a: &Vector3<f32>, b: &Vector3<f32>) -> Vector3<f32> {
[INFO] [stderr]    |            ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/main.rs:186:13
[INFO] [stderr]     |
[INFO] [stderr] 186 |         let ref mut f = File::create("image.png").unwrap();
[INFO] [stderr]     |         ----^^^^^^^^^-------------------------------------- help: try: `let f = &mut File::create("image.png").unwrap();`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::f32::consts::LOG2_E as LOG2`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::f32::consts::LOG2_E as LOG2;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::f32::MAX as F32_MAX`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::f32::MAX as F32_MAX;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::f32::MIN as F32_MIN`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use std::f32::MIN as F32_MIN;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rayon::prelude::*`
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 | use rayon::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `PI2`
[INFO] [stderr]   --> src/main.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | const PI2: f32 = PI * 2f32;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `RECIP_PI2`
[INFO] [stderr]   --> src/main.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | const RECIP_PI2: f32 = RECIP_PI / 2f32;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `EPSILON`
[INFO] [stderr]   --> src/main.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | const EPSILON: f32 = 1e-6;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `GAMMA_FACTOR`
[INFO] [stderr]   --> src/main.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | const GAMMA_FACTOR: f32 = 2.2;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `origin`
[INFO] [stderr]   --> src/camera.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn origin(&mut self, origin: Vector3<f32>) -> &mut CameraUVWBuilder {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CameraLookAtBuilder`
[INFO] [stderr]   --> src/camera.rs:57:1
[INFO] [stderr]    |
[INFO] [stderr] 57 | pub struct CameraLookAtBuilder {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/camera.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn new() -> CameraLookAtBuilder {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `lookfrom`
[INFO] [stderr]   --> src/camera.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn lookfrom(&mut self, lookfrom: Vector3<f32>) -> &mut Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `lookat`
[INFO] [stderr]   --> src/camera.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     pub fn lookat(&mut self, lookat: Vector3<f32>) -> &mut Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `vup`
[INFO] [stderr]   --> src/camera.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub fn vup(&mut self, vup: Vector3<f32>) -> &mut Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `vfov`
[INFO] [stderr]   --> src/camera.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     pub fn vfov(&mut self, vfov: f32) -> &mut Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `aspect`
[INFO] [stderr]   --> src/camera.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     pub fn aspect(&mut self, aspect: f32) -> &mut Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `finalize`
[INFO] [stderr]   --> src/camera.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn finalize(&self) -> Camera {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pow3`
[INFO] [stderr]   --> src/main.rs:38:1
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn pow3(x: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pow4`
[INFO] [stderr]   --> src/main.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn pow4(x: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `pow5`
[INFO] [stderr]   --> src/main.rs:46:1
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn pow5(x: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clamp`
[INFO] [stderr]   --> src/main.rs:50:1
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn clamp(x: &f32, min: &f32, max: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `saturate`
[INFO] [stderr]   --> src/main.rs:58:1
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn saturate(x: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `recip`
[INFO] [stderr]   --> src/main.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn recip(x: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mix`
[INFO] [stderr]   --> src/main.rs:66:1
[INFO] [stderr]    |
[INFO] [stderr] 66 | fn mix(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `step`
[INFO] [stderr]   --> src/main.rs:70:1
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn step(edge: &f32, x: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `smoothstep`
[INFO] [stderr]   --> src/main.rs:77:1
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn smoothstep(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `radians`
[INFO] [stderr]   --> src/main.rs:87:1
[INFO] [stderr]    |
[INFO] [stderr] 87 | fn radians(deg: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `degrees`
[INFO] [stderr]   --> src/main.rs:91:1
[INFO] [stderr]    |
[INFO] [stderr] 91 | fn degrees(rad: &f32) -> f32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/camera.rs:10:30
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn get_ray(&self, u: &f32, v: &f32) -> Ray {
[INFO] [stderr]    |                              ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::trivially_copy_pass_by_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/camera.rs:10:39
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn get_ray(&self, u: &f32, v: &f32) -> Ray {
[INFO] [stderr]    |                                       ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: variable `halfH` should have a snake case name such as `half_h`
[INFO] [stderr]   --> src/camera.rs:96:13
[INFO] [stderr]    |
[INFO] [stderr] 96 |         let halfH = (self.vfov.to_radians() / 2f32).tan();
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `halfW` should have a snake case name such as `half_w`
[INFO] [stderr]   --> src/camera.rs:97:13
[INFO] [stderr]    |
[INFO] [stderr] 97 |         let halfW = self.aspect * halfH;
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/ray.rs:27:25
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn at(&self, t: &f32) -> Vector3<f32> {
[INFO] [stderr]    |                         ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/sphere.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 | /         match d > 0f32 {
[INFO] [stderr] 29 | |             false => None,
[INFO] [stderr] 30 | |             true => {
[INFO] [stderr] 31 | |                 let root = d.sqrt();
[INFO] [stderr] ...  |
[INFO] [stderr] 47 | |             }
[INFO] [stderr] 48 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_bool)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_bool
[INFO] [stderr] help: consider using an if/else expression
[INFO] [stderr]    |
[INFO] [stderr] 28 |         if d > 0f32 {
[INFO] [stderr] 29 |     let root = d.sqrt();
[INFO] [stderr] 30 |     {
[INFO] [stderr] 31 |         let t = (-b - root) / (2.0f32 * a);
[INFO] [stderr] 32 |         if t < t1 && t > t0 {
[INFO] [stderr] 33 |             let p = r.at(&t);
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 | fn pow2(x: &f32) -> f32 {
[INFO] [stderr]    |            ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:38:12
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn pow3(x: &f32) -> f32 {
[INFO] [stderr]    |            ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:42:12
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn pow4(x: &f32) -> f32 {
[INFO] [stderr]    |            ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:46:12
[INFO] [stderr]    |
[INFO] [stderr] 46 | fn pow5(x: &f32) -> f32 {
[INFO] [stderr]    |            ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn clamp(x: &f32, min: &f32, max: &f32) -> f32 {
[INFO] [stderr]    |             ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:50:24
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn clamp(x: &f32, min: &f32, max: &f32) -> f32 {
[INFO] [stderr]    |                        ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:50:35
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn clamp(x: &f32, min: &f32, max: &f32) -> f32 {
[INFO] [stderr]    |                                   ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:52:25
[INFO] [stderr]    |
[INFO] [stderr] 52 |         _ if x > min => min.clone(),
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: try dereferencing it: `*min`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:53:25
[INFO] [stderr]    |
[INFO] [stderr] 53 |         _ if x < max => max.clone(),
[INFO] [stderr]    |                         ^^^^^^^^^^^ help: try dereferencing it: `*max`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:54:14
[INFO] [stderr]    |
[INFO] [stderr] 54 |         _ => x.clone(),
[INFO] [stderr]    |              ^^^^^^^^^ help: try dereferencing it: `*x`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:58:16
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn saturate(x: &f32) -> f32 {
[INFO] [stderr]    |                ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn recip(x: &f32) -> f32 {
[INFO] [stderr]    |             ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:66:11
[INFO] [stderr]    |
[INFO] [stderr] 66 | fn mix(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    |           ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:66:20
[INFO] [stderr]    |
[INFO] [stderr] 66 | fn mix(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    |                    ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:66:29
[INFO] [stderr]    |
[INFO] [stderr] 66 | fn mix(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    |                             ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:70:15
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn step(edge: &f32, x: &f32) -> f32 {
[INFO] [stderr]    |               ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:70:24
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn step(edge: &f32, x: &f32) -> f32 {
[INFO] [stderr]    |                        ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/main.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 | /     match x < edge {
[INFO] [stderr] 72 | |         true => 0f32,
[INFO] [stderr] 73 | |         false => 1f32,
[INFO] [stderr] 74 | |     }
[INFO] [stderr]    | |_____^ help: consider using an if/else expression: `if x < edge { 0f32 } else { 1f32 }`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_bool
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:77:18
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn smoothstep(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    |                  ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:77:27
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn smoothstep(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    |                           ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:77:36
[INFO] [stderr]    |
[INFO] [stderr] 77 | fn smoothstep(a: &f32, b: &f32, t: &f32) -> f32 {
[INFO] [stderr]    |                                    ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to match on a boolean expression
[INFO] [stderr]   --> src/main.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 | /     match a >= b {
[INFO] [stderr] 79 | |         true => 0f32,
[INFO] [stderr] 80 | |         false => {
[INFO] [stderr] 81 | |             let x = saturate(&((t - a) / (b - a)));
[INFO] [stderr] 82 | |             x * x * (3f32 - 2f32 * t)
[INFO] [stderr] 83 | |         }
[INFO] [stderr] 84 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_bool
[INFO] [stderr] help: consider using an if/else expression
[INFO] [stderr]    |
[INFO] [stderr] 78 |     if a >= b { 0f32 } else {
[INFO] [stderr] 79 |     let x = saturate(&((t - a) / (b - a)));
[INFO] [stderr] 80 |     x * x * (3f32 - 2f32 * t)
[INFO] [stderr] 81 | }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:87:17
[INFO] [stderr]    |
[INFO] [stderr] 87 | fn radians(deg: &f32) -> f32 {
[INFO] [stderr]    |                 ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:91:17
[INFO] [stderr]    |
[INFO] [stderr] 91 | fn degrees(rad: &f32) -> f32 {
[INFO] [stderr]    |                 ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: this argument is passed by reference, but would be more efficient if passed by value
[INFO] [stderr]   --> src/main.rs:95:12
[INFO] [stderr]    |
[INFO] [stderr] 95 | fn lerp(t: &f32, a: &Vector3<f32>, b: &Vector3<f32>) -> Vector3<f32> {
[INFO] [stderr]    |            ^^^^ help: consider passing by value instead: `f32`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivially_copy_pass_by_ref
[INFO] [stderr] 
[INFO] [stderr] warning: `ref` on an entire `let` pattern is discouraged, take a reference with `&` instead
[INFO] [stderr]    --> src/main.rs:186:13
[INFO] [stderr]     |
[INFO] [stderr] 186 |         let ref mut f = File::create("image.png").unwrap();
[INFO] [stderr]     |         ----^^^^^^^^^-------------------------------------- help: try: `let f = &mut File::create("image.png").unwrap();`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::toplevel_ref_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#toplevel_ref_arg
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.89s
[INFO] running `"docker" "inspect" "c3906130114f9a6d9f71e9d3ceb1d42b393d92df272166f6d80af82fc73ad80e"`
[INFO] running `"docker" "rm" "-f" "c3906130114f9a6d9f71e9d3ceb1d42b393d92df272166f6d80af82fc73ad80e"`
[INFO] [stdout] c3906130114f9a6d9f71e9d3ceb1d42b393d92df272166f6d80af82fc73ad80e