[INFO] cloning repository https://github.com/eggmund/raymarcher
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eggmund/raymarcher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feggmund%2Fraymarcher", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feggmund%2Fraymarcher'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e0b00af24f0a3b3e8f7c81ee6dabf11218f7eebd
[INFO] checking eggmund/raymarcher against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feggmund%2Fraymarcher" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/eggmund/raymarcher
[INFO] finished tweaking git repo https://github.com/eggmund/raymarcher
[INFO] tweaked toml for git repo https://github.com/eggmund/raymarcher written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/eggmund/raymarcher on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/eggmund/raymarcher 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 292e3b78e3aab711c29fec2a55c5cd4fe0a58c5495b5825fea5944ce2e6cfd50
[INFO] running `Command { std: "docker" "start" "-a" "292e3b78e3aab711c29fec2a55c5cd4fe0a58c5495b5825fea5944ce2e6cfd50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "292e3b78e3aab711c29fec2a55c5cd4fe0a58c5495b5825fea5944ce2e6cfd50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "292e3b78e3aab711c29fec2a55c5cd4fe0a58c5495b5825fea5944ce2e6cfd50", kill_on_drop: false }`
[INFO] [stdout] 292e3b78e3aab711c29fec2a55c5cd4fe0a58c5495b5825fea5944ce2e6cfd50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97b28a0a78d35e5090bd45aa5b3e9109d2251f05a5b2079661c80aa4317e7a8b
[INFO] running `Command { std: "docker" "start" "-a" "97b28a0a78d35e5090bd45aa5b3e9109d2251f05a5b2079661c80aa4317e7a8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking deflate v0.8.4
[INFO] [stderr]     Checking miniz_oxide v0.3.6
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking bytemuck v1.2.0
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking tiff v0.4.0
[INFO] [stderr]     Checking png v0.16.3
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking num-iter v0.1.40
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking image v0.23.4
[INFO] [stderr]    Compiling paste-impl v0.1.10
[INFO] [stderr]     Checking paste v0.1.10
[INFO] [stderr]     Checking simba v0.1.2
[INFO] [stderr]     Checking nalgebra v0.21.0
[INFO] [stderr]     Checking raytracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Perspective3` and `Vector2`
[INFO] [stdout]  --> src/ray.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | use na::{Point3, Point2, Vector3, Vector2, Perspective3};
[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: `crate::ray::Ray`
[INFO] [stdout]  --> src/objects.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ray::Ray;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Pixel` and `Rgba`
[INFO] [stdout]  --> src/scene.rs:1:41
[INFO] [stdout]   |
[INFO] [stdout] 1 | use image::{DynamicImage, GenericImage, Rgba, Pixel};
[INFO] [stdout]   |                                         ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Isometry3`, `Matrix4`, `Point3`, and `Vector3`
[INFO] [stdout]  --> src/scene.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | use na::{Point3, Perspective3, Vector3, Matrix4, Isometry3};
[INFO] [stdout]   |          ^^^^^^                ^^^^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sphere`
[INFO] [stdout]  --> src/scene.rs:6:22
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::objects::{Sphere, Object};
[INFO] [stdout]   |                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RAY_HIT_THRESHOLD`
[INFO] [stdout]  --> src/scene.rs:7:76
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::ray::{Ray, HitData, RAY_MAX_TRAVEL_DISTANCE, RAY_REFLECT_LIMIT, RAY_HIT_THRESHOLD};
[INFO] [stdout]   |                                                                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Color`
[INFO] [stdout]  --> src/scene.rs:8:30
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::lighting::{Light, Color};
[INFO] [stdout]   |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Vector3`
[INFO] [stdout]  --> src/lighting.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 | use na::{Point3, Vector3};
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Matrix4` and `Vector3`
[INFO] [stdout]  --> src/main.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 | use na::{Point3, Vector3, Matrix4};
[INFO] [stdout]   |                  ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Perspective3` and `Vector2`
[INFO] [stdout]  --> src/ray.rs:1:35
[INFO] [stdout]   |
[INFO] [stdout] 1 | use na::{Point3, Point2, Vector3, Vector2, Perspective3};
[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: `crate::ray::Ray`
[INFO] [stdout]  --> src/objects.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ray::Ray;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Pixel` and `Rgba`
[INFO] [stdout]  --> src/scene.rs:1:41
[INFO] [stdout]   |
[INFO] [stdout] 1 | use image::{DynamicImage, GenericImage, Rgba, Pixel};
[INFO] [stdout]   |                                         ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Isometry3`, `Matrix4`, `Point3`, and `Vector3`
[INFO] [stdout]  --> src/scene.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | use na::{Point3, Perspective3, Vector3, Matrix4, Isometry3};
[INFO] [stdout]   |          ^^^^^^                ^^^^^^^  ^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Sphere`
[INFO] [stdout]  --> src/scene.rs:6:22
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::objects::{Sphere, Object};
[INFO] [stdout]   |                      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RAY_HIT_THRESHOLD`
[INFO] [stdout]  --> src/scene.rs:7:76
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::ray::{Ray, HitData, RAY_MAX_TRAVEL_DISTANCE, RAY_REFLECT_LIMIT, RAY_HIT_THRESHOLD};
[INFO] [stdout]   |                                                                            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Color`
[INFO] [stdout]  --> src/scene.rs:8:30
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::lighting::{Light, Color};
[INFO] [stdout]   |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Vector3`
[INFO] [stdout]  --> src/lighting.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 | use na::{Point3, Vector3};
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Matrix4` and `Vector3`
[INFO] [stdout]  --> src/main.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 | use na::{Point3, Vector3, Matrix4};
[INFO] [stdout]   |                  ^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/ray.rs:28:73
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn new_with_color(origin: Point3<f32>, direction: Vector3<f32>, color: Color) -> Ray {
[INFO] [stdout]    |                                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point`
[INFO] [stdout]   --> src/objects.rs:66:26
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn get_normal(&self, point: &Point3<f32>) -> Vector3<f32> {
[INFO] [stdout]    |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_point`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/scene.rs:43:21
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 for i in 0..RAY_REFLECT_LIMIT+1 {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `light_dot1`
[INFO] [stdout]   --> src/scene.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let light_dot1 = (self.lights[0].pos - hit_data.point_of_contact).dot(&surface_normal);
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_light_dot1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `distance_traveled`
[INFO] [stdout]   --> src/scene.rs:90:32
[INFO] [stdout]    |
[INFO] [stdout] 90 |                 let (hit_data, distance_traveled) = shadow_ray.march_until_hit(&self.objects, &[hit_data.object_index]);
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_distance_traveled`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fade_amount`
[INFO] [stdout]   --> src/lighting.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let fade_amount = distance_travelled/RAY_MAX_TRAVEL_DISTANCE;
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fade_amount`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut main_scene = Scene::new(DIMS.0, DIMS.1, 90.0,
[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: associated function `new_with_color` is never used
[INFO] [stdout]   --> src/ray.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Ray {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn new_with_color(origin: Point3<f32>, direction: Vector3<f32>, color: Color) -> Ray {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AxisAlignedCube` is never constructed
[INFO] [stdout]   --> src/objects.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub struct AxisAlignedCube {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `fov` is never read
[INFO] [stdout]   --> src/scene.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Scene {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub fov: f32,       // In DEGREES
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `black`, `grey_from_float`, `fade_due_to_render_distance`, and `is_black` are never used
[INFO] [stdout]   --> src/lighting.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Color {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn black() -> Color {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn grey_from_float(a: f32) -> Color {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn fade_due_to_render_distance(ray_col: &Color, distance_travelled: f32) -> Color {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn is_black(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]   --> src/ray.rs:28:73
[INFO] [stdout]    |
[INFO] [stdout] 28 |     pub fn new_with_color(origin: Point3<f32>, direction: Vector3<f32>, color: Color) -> Ray {
[INFO] [stdout]    |                                                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `point`
[INFO] [stdout]   --> src/objects.rs:66:26
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn get_normal(&self, point: &Point3<f32>) -> Vector3<f32> {
[INFO] [stdout]    |                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_point`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/scene.rs:43:21
[INFO] [stdout]    |
[INFO] [stdout] 43 |                 for i in 0..RAY_REFLECT_LIMIT+1 {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `light_dot1`
[INFO] [stdout]   --> src/scene.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let light_dot1 = (self.lights[0].pos - hit_data.point_of_contact).dot(&surface_normal);
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_light_dot1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `distance_traveled`
[INFO] [stdout]   --> src/scene.rs:90:32
[INFO] [stdout]    |
[INFO] [stdout] 90 |                 let (hit_data, distance_traveled) = shadow_ray.march_until_hit(&self.objects, &[hit_data.object_index]);
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_distance_traveled`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fade_amount`
[INFO] [stdout]   --> src/lighting.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |         let fade_amount = distance_travelled/RAY_MAX_TRAVEL_DISTANCE;
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fade_amount`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:23:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut main_scene = Scene::new(DIMS.0, DIMS.1, 90.0,
[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: associated function `new_with_color` is never used
[INFO] [stdout]   --> src/ray.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl Ray {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn new_with_color(origin: Point3<f32>, direction: Vector3<f32>, color: Color) -> Ray {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AxisAlignedCube` is never constructed
[INFO] [stdout]   --> src/objects.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 | pub struct AxisAlignedCube {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `fov` is never read
[INFO] [stdout]   --> src/scene.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Scene {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub fov: f32,       // In DEGREES
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `black`, `grey_from_float`, `fade_due_to_render_distance`, and `is_black` are never used
[INFO] [stdout]   --> src/lighting.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Color {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub fn black() -> Color {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn grey_from_float(a: f32) -> Color {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn fade_due_to_render_distance(ray_col: &Color, distance_travelled: f32) -> Color {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 67 |     pub fn is_black(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.60s
[INFO] running `Command { std: "docker" "inspect" "97b28a0a78d35e5090bd45aa5b3e9109d2251f05a5b2079661c80aa4317e7a8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97b28a0a78d35e5090bd45aa5b3e9109d2251f05a5b2079661c80aa4317e7a8b", kill_on_drop: false }`
[INFO] [stdout] 97b28a0a78d35e5090bd45aa5b3e9109d2251f05a5b2079661c80aa4317e7a8b
