[INFO] cloning repository https://github.com/quexten/raytracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/quexten/raytracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquexten%2Fraytracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquexten%2Fraytracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d820283bd95085e6a8172e0b181c3ae4a05fbf16
[INFO] checking quexten/raytracer/d820283bd95085e6a8172e0b181c3ae4a05fbf16 against master#217cb73577ed6f30a2005dd75bab01d23ec4cd60 for pr-148939
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquexten%2Fraytracer" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/quexten/raytracer
[INFO] finished tweaking git repo https://github.com/quexten/raytracer
[INFO] tweaked toml for git repo https://github.com/quexten/raytracer written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/quexten/raytracer on toolchain 217cb73577ed6f30a2005dd75bab01d23ec4cd60
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+217cb73577ed6f30a2005dd75bab01d23ec4cd60" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/quexten/raytracer 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" "+217cb73577ed6f30a2005dd75bab01d23ec4cd60" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "7978da7f8e60c79b54c3710fcc4ab1ea93d68c6c08164be87d843a5cb04a8577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7978da7f8e60c79b54c3710fcc4ab1ea93d68c6c08164be87d843a5cb04a8577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7978da7f8e60c79b54c3710fcc4ab1ea93d68c6c08164be87d843a5cb04a8577", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+217cb73577ed6f30a2005dd75bab01d23ec4cd60" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `rand::rand_core::le`
[INFO] [stdout]  --> src/camera.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand::rand_core::le;
[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: `self`
[INFO] [stdout]   --> src/camera.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     vec3::{self, Vec3},
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/camera.rs:263:30
[INFO] [stdout]     |
[INFO] [stdout] 263 |             let diffuse = if (metal.diffuse) {
[INFO] [stdout]     |                              ^             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 263 -             let diffuse = if (metal.diffuse) {
[INFO] [stdout] 263 +             let diffuse = if metal.diffuse  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng` and `SeedableRng`
[INFO] [stdout]  --> src/scene3.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{Rng, SeedableRng};
[INFO] [stdout]   |            ^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/scene3.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     material::{self, Material},
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/scene4.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     material::{self, Material},
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]  --> src/scene5.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{Rng, SeedableRng};
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng` and `SeedableRng`
[INFO] [stdout]  --> src/scene6.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{Rng, SeedableRng};
[INFO] [stdout]   |            ^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/triangle.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 |     ray::{self, Ray},
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::rand_core::le`
[INFO] [stdout]  --> src/camera.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand::rand_core::le;
[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: `self`
[INFO] [stdout]   --> src/camera.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     vec3::{self, Vec3},
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/camera.rs:263:30
[INFO] [stdout]     |
[INFO] [stdout] 263 |             let diffuse = if (metal.diffuse) {
[INFO] [stdout]     |                              ^             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 263 -             let diffuse = if (metal.diffuse) {
[INFO] [stdout] 263 +             let diffuse = if metal.diffuse  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng` and `SeedableRng`
[INFO] [stdout]  --> src/scene3.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{Rng, SeedableRng};
[INFO] [stdout]   |            ^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/scene3.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     material::{self, Material},
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/scene4.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 |     material::{self, Material},
[INFO] [stdout]   |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]  --> src/scene5.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{Rng, SeedableRng};
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rng` and `SeedableRng`
[INFO] [stdout]  --> src/scene6.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{Rng, SeedableRng};
[INFO] [stdout]   |            ^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/triangle.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 |     ray::{self, Ray},
[INFO] [stdout]   |           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `rand::Rng::gen_range`: Renamed to `random_range`
[INFO] [stdout]   --> src/scene4.rs:94:17
[INFO] [stdout]    |
[INFO] [stdout] 94 |             rng.gen_range(-0.15..0.15),
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `rand::Rng::gen_range`: Renamed to `random_range`
[INFO] [stdout]   --> src/scene4.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |             rng.gen_range(-0.15..0.15),
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `rand::Rng::gen_range`: Renamed to `random_range`
[INFO] [stdout]   --> src/scene4.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |             rng.gen_range(-0.7..-0.5),
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `rand::Rng::gen_range`: Renamed to `random_range`
[INFO] [stdout]   --> src/scene4.rs:94:17
[INFO] [stdout]    |
[INFO] [stdout] 94 |             rng.gen_range(-0.15..0.15),
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `rand::Rng::gen_range`: Renamed to `random_range`
[INFO] [stdout]   --> src/scene4.rs:95:17
[INFO] [stdout]    |
[INFO] [stdout] 95 |             rng.gen_range(-0.15..0.15),
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `rand::Rng::gen_range`: Renamed to `random_range`
[INFO] [stdout]   --> src/scene4.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |             rng.gen_range(-0.7..-0.5),
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/scene2.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     for i in 0..200 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/scene5.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut rng = rand_chacha::ChaCha8Rng::from_seed(seed);
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]   --> src/scene5.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut rng = rand_chacha::ChaCha8Rng::from_seed(seed);
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/scene2.rs:50:9
[INFO] [stdout]    |
[INFO] [stdout] 50 |     for i in 0..200 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/scene5.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut rng = rand_chacha::ChaCha8Rng::from_seed(seed);
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]   --> src/scene5.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let mut rng = rand_chacha::ChaCha8Rng::from_seed(seed);
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flen`
[INFO] [stdout]   --> src/main.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let (world, flen) = scene1::create_scene();
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flen`
[INFO] [stdout]   --> src/main.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let (world, flen) = scene2::create_scene();
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flen`
[INFO] [stdout]   --> src/main.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let (world, flen) = scene3::create_scene();
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flen`
[INFO] [stdout]   --> src/main.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let (world, flen) = scene4::create_scene();
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flen`
[INFO] [stdout]   --> src/main.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let (world, flen) = scene5::create_scene();
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flen`
[INFO] [stdout]   --> src/main.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let (world, flen) = scene5::create_scene();
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flen`
[INFO] [stdout]   --> src/main.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let (world, flen) = scene6::create_scene();
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/camera.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Camera {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub look_at: Vec3,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 31 |     pub up: Vec3,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 32 |     pub fov: f32,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 33 |     pub u: Vec3,
[INFO] [stdout]    |         ^
[INFO] [stdout] 34 |     pub v: Vec3,
[INFO] [stdout]    |         ^
[INFO] [stdout] 35 |     pub w: Vec3,
[INFO] [stdout]    |         ^
[INFO] [stdout] 36 |     pub defocus_angle: f32,
[INFO] [stdout] 37 |     pub focus_distance: f32,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hsv_to_rgb` is never used
[INFO] [stdout]    --> src/camera.rs:342:4
[INFO] [stdout]     |
[INFO] [stdout] 342 | fn hsv_to_rgb(h: f32, s: f32, v: f32) -> Vec3 {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `front_face` is never read
[INFO] [stdout]  --> src/hitable.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct HitRecord {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 9 |     pub front_face: bool,
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hsv_to_rgb` is never used
[INFO] [stdout]    --> src/scene6.rs:161:4
[INFO] [stdout]     |
[INFO] [stdout] 161 | fn hsv_to_rgb(h: f32, s: f32, v: f32) -> Vec3 {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `multiply_vec` and `random_on_hemisphere` are never used
[INFO] [stdout]   --> src/vec3.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Vec3 {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn multiply_vec(&self, other: &Vec3) -> Vec3 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 97 |     pub fn random_on_hemisphere(normal: &Vec3) -> Vec3 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flen`
[INFO] [stdout]   --> src/main.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |     let (world, flen) = scene1::create_scene();
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flen`
[INFO] [stdout]   --> src/main.rs:32:17
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let (world, flen) = scene2::create_scene();
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flen`
[INFO] [stdout]   --> src/main.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let (world, flen) = scene3::create_scene();
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flen`
[INFO] [stdout]   --> src/main.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let (world, flen) = scene4::create_scene();
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flen`
[INFO] [stdout]   --> src/main.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let (world, flen) = scene5::create_scene();
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flen`
[INFO] [stdout]   --> src/main.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let (world, flen) = scene5::create_scene();
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flen`
[INFO] [stdout]   --> src/main.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let (world, flen) = scene6::create_scene();
[INFO] [stdout]    |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_flen`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/camera.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Camera {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub look_at: Vec3,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] 31 |     pub up: Vec3,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 32 |     pub fov: f32,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 33 |     pub u: Vec3,
[INFO] [stdout]    |         ^
[INFO] [stdout] 34 |     pub v: Vec3,
[INFO] [stdout]    |         ^
[INFO] [stdout] 35 |     pub w: Vec3,
[INFO] [stdout]    |         ^
[INFO] [stdout] 36 |     pub defocus_angle: f32,
[INFO] [stdout] 37 |     pub focus_distance: f32,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hsv_to_rgb` is never used
[INFO] [stdout]    --> src/camera.rs:342:4
[INFO] [stdout]     |
[INFO] [stdout] 342 | fn hsv_to_rgb(h: f32, s: f32, v: f32) -> Vec3 {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `front_face` is never read
[INFO] [stdout]  --> src/hitable.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct HitRecord {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 9 |     pub front_face: bool,
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `hsv_to_rgb` is never used
[INFO] [stdout]    --> src/scene6.rs:161:4
[INFO] [stdout]     |
[INFO] [stdout] 161 | fn hsv_to_rgb(h: f32, s: f32, v: f32) -> Vec3 {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `multiply_vec` and `random_on_hemisphere` are never used
[INFO] [stdout]   --> src/vec3.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Vec3 {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 39 |     pub fn multiply_vec(&self, other: &Vec3) -> Vec3 {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 97 |     pub fn random_on_hemisphere(normal: &Vec3) -> Vec3 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.12s
[INFO] running `Command { std: "docker" "inspect" "53ce25cfe76bccd1ebb9274eae7a7a22b4f9672a22ebd0733f8be0c1c586ea8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53ce25cfe76bccd1ebb9274eae7a7a22b4f9672a22ebd0733f8be0c1c586ea8d", kill_on_drop: false }`
[INFO] [stdout] 53ce25cfe76bccd1ebb9274eae7a7a22b4f9672a22ebd0733f8be0c1c586ea8d
