[INFO] updating cached repository https://github.com/alsor/durer_renderer
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5c91997c3b183b501cdd06c4d33f9045e05878f9
[INFO] checking alsor/durer_renderer against try#ba14a92a10441c4b839ce71e6ef5f7a48bbff18f for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falsor%2Fdurer_renderer" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alsor/durer_renderer on toolchain ba14a92a10441c4b839ce71e6ef5f7a48bbff18f
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/alsor/durer_renderer
[INFO] finished tweaking git repo https://github.com/alsor/durer_renderer
[INFO] tweaked toml for git repo https://github.com/alsor/durer_renderer written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/alsor/durer_renderer already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ba14a92a10441c4b839ce71e6ef5f7a48bbff18f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2b2e402f934a3170b429fd4724dbc78c06dea568758e5f35e058ece86499f62a
[INFO] running `"docker" "start" "-a" "2b2e402f934a3170b429fd4724dbc78c06dea568758e5f35e058ece86499f62a"`
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking atty v0.2.8
[INFO] [stderr]     Checking gif v0.10.2
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking rayon-core v1.3.0
[INFO] [stderr]     Checking regex v1.0.2
[INFO] [stderr]     Checking num-iter v0.1.35
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]     Checking sdl2 v0.31.0
[INFO] [stderr]     Checking png v0.15.0
[INFO] [stderr]     Checking env_logger v0.5.10
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking image v0.22.0
[INFO] [stderr]     Checking durer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused imports: `thread`, `time`
[INFO] [stderr]  --> src/main.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{thread, time};
[INFO] [stderr]   |           ^^^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rand::Rng;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::rect::Rect`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use sdl2::rect::Rect;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `plane::Plane`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use plane::Plane;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/ray_tracing.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::plane::PlaneType`
[INFO] [stderr]  --> src/projective_camera.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::plane::PlaneType;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::Point2D`
[INFO] [stderr]  --> src/buffer_canvas.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crate::Point2D;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::Vector3f`
[INFO] [stderr]  --> src/buffer_canvas.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use crate::Vector3f;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/buffer_canvas.rs:84:22
[INFO] [stderr]    |
[INFO] [stderr] 84 |         let result = (canvas_width / 2 + x_canvas);
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/buffer_canvas.rs:95:22
[INFO] [stderr]    |
[INFO] [stderr] 95 |         let result = (canvas_height / 2 - y_canvas - 1);
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Color`, `Triangle`
[INFO] [stderr]  --> src/instance.rs:1:13
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::{Color, Triangle};
[INFO] [stderr]   |             ^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/ply2.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::triangle`
[INFO] [stderr]  --> src/ply2.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use crate::triangle;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::video::WindowPos::Positioned`
[INFO] [stderr]  --> src/rendering.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use sdl2::video::WindowPos::Positioned;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `face_visible`
[INFO] [stderr]  --> src/rendering.rs:4:13
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::{face_visible, Triangle, Triangle4f};
[INFO] [stderr]   |             ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `transform`
[INFO] [stderr]  --> src/rendering.rs:6:30
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crate::{face_visible_4f, transform};
[INFO] [stderr]   |                              ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::Point2D`
[INFO] [stderr]   --> src/rendering.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use crate::Point2D;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `thread`, `time`
[INFO] [stderr]  --> src/main.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{thread, time};
[INFO] [stderr]   |           ^^^^^^  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::str::FromStr`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::str::FromStr;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rand::Rng;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::rect::Rect`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use sdl2::rect::Rect;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `plane::Plane`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use plane::Plane;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/ray_tracing.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::plane::PlaneType`
[INFO] [stderr]  --> src/projective_camera.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::plane::PlaneType;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::Point2D`
[INFO] [stderr]  --> src/buffer_canvas.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crate::Point2D;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::Vector3f`
[INFO] [stderr]  --> src/buffer_canvas.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use crate::Vector3f;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/buffer_canvas.rs:84:22
[INFO] [stderr]    |
[INFO] [stderr] 84 |         let result = (canvas_width / 2 + x_canvas);
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/buffer_canvas.rs:95:22
[INFO] [stderr]    |
[INFO] [stderr] 95 |         let result = (canvas_height / 2 - y_canvas - 1);
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/ply2.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::triangle`
[INFO] [stderr]  --> src/ply2.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use crate::triangle;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sdl2::video::WindowPos::Positioned`
[INFO] [stderr]  --> src/rendering.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use sdl2::video::WindowPos::Positioned;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `face_visible`
[INFO] [stderr]  --> src/rendering.rs:4:13
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::{face_visible, Triangle, Triangle4f};
[INFO] [stderr]   |             ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `transform`
[INFO] [stderr]  --> src/rendering.rs:6:30
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crate::{face_visible_4f, transform};
[INFO] [stderr]   |                              ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::Point2D`
[INFO] [stderr]   --> src/rendering.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use crate::Point2D;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/ply2.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |             _ => ()
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:223:13
[INFO] [stderr]     |
[INFO] [stderr] 223 |         for i in 1..dx {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:248:13
[INFO] [stderr]     |
[INFO] [stderr] 248 |         for i in 1..dy {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/main.rs:448:13
[INFO] [stderr]     |
[INFO] [stderr] 448 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/main.rs:488:13
[INFO] [stderr]     |
[INFO] [stderr] 488 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/main.rs:710:9
[INFO] [stderr]     |
[INFO] [stderr] 710 |     let size = (z_max - z_min).abs();
[INFO] [stderr]     |         ^^^^ help: consider prefixing with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `red`
[INFO] [stderr]     --> src/main.rs:1185:9
[INFO] [stderr]      |
[INFO] [stderr] 1185 |     let red = Color { r: 255, g: 0, b: 0 };
[INFO] [stderr]      |         ^^^ help: consider prefixing with an underscore: `_red`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `green`
[INFO] [stderr]     --> src/main.rs:1186:9
[INFO] [stderr]      |
[INFO] [stderr] 1186 |     let green = Color { r: 0, g: 255, b: 0 };
[INFO] [stderr]      |         ^^^^^ help: consider prefixing with an underscore: `_green`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `blue`
[INFO] [stderr]     --> src/main.rs:1187:9
[INFO] [stderr]      |
[INFO] [stderr] 1187 |     let blue = Color { r: 0, g: 0, b: 255 };
[INFO] [stderr]      |         ^^^^ help: consider prefixing with an underscore: `_blue`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `white`
[INFO] [stderr]     --> src/main.rs:1188:9
[INFO] [stderr]      |
[INFO] [stderr] 1188 |     let white = Color { r: 255, g: 255, b: 255 };
[INFO] [stderr]      |         ^^^^^ help: consider prefixing with an underscore: `_white`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sphere`
[INFO] [stderr]     --> src/main.rs:1194:9
[INFO] [stderr]      |
[INFO] [stderr] 1194 |     let sphere = sphere(35);
[INFO] [stderr]      |         ^^^^^^ help: consider prefixing with an underscore: `_sphere`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cube`
[INFO] [stderr]     --> src/main.rs:1195:9
[INFO] [stderr]      |
[INFO] [stderr] 1195 |     let cube = cube(0.9);
[INFO] [stderr]      |         ^^^^ help: consider prefixing with an underscore: `_cube`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `torus`
[INFO] [stderr]     --> src/main.rs:1199:9
[INFO] [stderr]      |
[INFO] [stderr] 1199 |     let torus = ply2::load_model("resources/torus.ply2");
[INFO] [stderr]      |         ^^^^^ help: consider prefixing with an underscore: `_torus`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `current_instance_index`
[INFO] [stderr]     --> src/main.rs:1204:13
[INFO] [stderr]      |
[INFO] [stderr] 1204 |     let mut current_instance_index: Option<i32> = None;
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_current_instance_index`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/ray_tracing.rs:208:13
[INFO] [stderr]     |
[INFO] [stderr] 208 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/buffer_canvas.rs:149:17
[INFO] [stderr]     |
[INFO] [stderr] 149 |             for i in 1..dx {
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/buffer_canvas.rs:170:17
[INFO] [stderr]     |
[INFO] [stderr] 170 |             for i in 1..dy {
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]   --> src/ply2.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut rng = rand::thread_rng();
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `camera`
[INFO] [stderr]    --> src/rendering.rs:417:5
[INFO] [stderr]     |
[INFO] [stderr] 417 |     camera: &ProjectiveCamera,
[INFO] [stderr]     |     ^^^^^^ help: consider prefixing with an underscore: `_camera`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h_segment`
[INFO] [stderr]    --> src/rendering.rs:589:13
[INFO] [stderr]     |
[INFO] [stderr] 589 |         let h_segment = interpolate_float(x_l, h_left[y_index], x_r, h_right[y_index]);
[INFO] [stderr]     |             ^^^^^^^^^ help: consider prefixing with an underscore: `_h_segment`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h_segment`
[INFO] [stderr]    --> src/rendering.rs:746:13
[INFO] [stderr]     |
[INFO] [stderr] 746 |         let h_segment = interpolate_float(x_l, h_left[y_index], x_r, h_right[y_index]);
[INFO] [stderr]     |             ^^^^^^^^^ help: consider prefixing with an underscore: `_h_segment`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v0` is never read
[INFO] [stderr]    --> src/rendering.rs:800:9
[INFO] [stderr]     |
[INFO] [stderr] 800 |         v0 = v2;
[INFO] [stderr]     |         ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v1` is never read
[INFO] [stderr]    --> src/rendering.rs:813:9
[INFO] [stderr]     |
[INFO] [stderr] 813 |         v1 = v2;
[INFO] [stderr]     |         ^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v2` is never read
[INFO] [stderr]    --> src/rendering.rs:814:9
[INFO] [stderr]     |
[INFO] [stderr] 814 |         v2 = swap;
[INFO] [stderr]     |         ^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h_segment`
[INFO] [stderr]    --> src/rendering.rs:927:13
[INFO] [stderr]     |
[INFO] [stderr] 927 |         let h_segment = interpolate_float(x_l, h_left[y_index], x_r, h_right[y_index]);
[INFO] [stderr]     |             ^^^^^^^^^ help: consider prefixing with an underscore: `_h_segment`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v0` is never read
[INFO] [stderr]     --> src/rendering.rs:1004:9
[INFO] [stderr]      |
[INFO] [stderr] 1004 |         v0 = v2;
[INFO] [stderr]      |         ^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v1` is never read
[INFO] [stderr]     --> src/rendering.rs:1021:9
[INFO] [stderr]      |
[INFO] [stderr] 1021 |         v1 = v2;
[INFO] [stderr]      |         ^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v2` is never read
[INFO] [stderr]     --> src/rendering.rs:1022:9
[INFO] [stderr]      |
[INFO] [stderr] 1022 |         v2 = swap;
[INFO] [stderr]      |         ^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h_segment`
[INFO] [stderr]     --> src/rendering.rs:1171:13
[INFO] [stderr]      |
[INFO] [stderr] 1171 |         let h_segment = interpolate_float(x_l, h_left[y_index], x_r, h_right[y_index]);
[INFO] [stderr]      |             ^^^^^^^^^ help: consider prefixing with an underscore: `_h_segment`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]     --> src/rendering.rs:1247:9
[INFO] [stderr]      |
[INFO] [stderr] 1247 |     for i in i0..(i1 + 1) {
[INFO] [stderr]      |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]     --> src/rendering.rs:1263:9
[INFO] [stderr]      |
[INFO] [stderr] 1263 |     for i in i0..(i1 + 1) {
[INFO] [stderr]      |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:448:9
[INFO] [stderr]     |
[INFO] [stderr] 448 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:488:9
[INFO] [stderr]     |
[INFO] [stderr] 488 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/main.rs:1147:9
[INFO] [stderr]      |
[INFO] [stderr] 1147 |     let mut rendering_settings = RenderingSettings {
[INFO] [stderr]      |         ----^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/main.rs:1204:9
[INFO] [stderr]      |
[INFO] [stderr] 1204 |     let mut current_instance_index: Option<i32> = None;
[INFO] [stderr]      |         ----^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ray_tracing.rs:208:9
[INFO] [stderr]     |
[INFO] [stderr] 208 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/ply2.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut rng = rand::thread_rng();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:537:9
[INFO] [stderr]     |
[INFO] [stderr] 537 |     let mut x02 = interpolate_int(p0.y, p0.x, p2.y, p2.x);
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:538:9
[INFO] [stderr]     |
[INFO] [stderr] 538 |     let mut h02 = interpolate_float(p0.y, p0.h, p2.y, p2.h);
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:539:9
[INFO] [stderr]     |
[INFO] [stderr] 539 |     let mut iz02 = interpolate_float(p0.y, 1.0 / p0.z, p2.y, 1.0 / p2.z);
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:556:9
[INFO] [stderr]     |
[INFO] [stderr] 556 |     let mut x_left;
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:557:9
[INFO] [stderr]     |
[INFO] [stderr] 557 |     let mut x_right;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:558:9
[INFO] [stderr]     |
[INFO] [stderr] 558 |     let mut h_left;
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:559:9
[INFO] [stderr]     |
[INFO] [stderr] 559 |     let mut h_right;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:560:9
[INFO] [stderr]     |
[INFO] [stderr] 560 |     let mut iz_left;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:561:9
[INFO] [stderr]     |
[INFO] [stderr] 561 |     let mut iz_right;
[INFO] [stderr]     |         ----^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:679:9
[INFO] [stderr]     |
[INFO] [stderr] 679 |     let mut x02 = interpolate_int(p0.y, p0.x, p2.y, p2.x);
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:680:9
[INFO] [stderr]     |
[INFO] [stderr] 680 |     let mut h02 = interpolate_float(p0.y, p0.h, p2.y, p2.h);
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:681:9
[INFO] [stderr]     |
[INFO] [stderr] 681 |     let mut iz02 = interpolate_float(p0.y, 1.0 / p0.z, p2.y, 1.0 / p2.z);
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:682:9
[INFO] [stderr]     |
[INFO] [stderr] 682 |     let mut i02 = interpolate_float(p0.y, i0, p2.y, i2);
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:705:9
[INFO] [stderr]     |
[INFO] [stderr] 705 |     let mut x_left;
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:706:9
[INFO] [stderr]     |
[INFO] [stderr] 706 |     let mut x_right;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:707:9
[INFO] [stderr]     |
[INFO] [stderr] 707 |     let mut h_left;
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:708:9
[INFO] [stderr]     |
[INFO] [stderr] 708 |     let mut h_right;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:709:9
[INFO] [stderr]     |
[INFO] [stderr] 709 |     let mut iz_left;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:710:9
[INFO] [stderr]     |
[INFO] [stderr] 710 |     let mut iz_right;
[INFO] [stderr]     |         ----^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:711:9
[INFO] [stderr]     |
[INFO] [stderr] 711 |     let mut i_left;
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/ply2.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |             _ => ()
[INFO] [stderr]    |             ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr]    --> src/rendering.rs:712:9
[INFO] [stderr]     |
[INFO] [stderr] 712 |     let mut i_right;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:836:9
[INFO] [stderr]     |
[INFO] [stderr] 836 |     let mut x02 = interpolate_int(p0.y, p0.x, p2.y, p2.x);
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:837:9
[INFO] [stderr]     |
[INFO] [stderr] 837 |     let mut h02 = interpolate_float(p0.y, p0.h, p2.y, p2.h);
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:838:9
[INFO] [stderr]     |
[INFO] [stderr] 838 |     let mut iz02 = interpolate_float(p0.y, 1.0 / p0.z, p2.y, 1.0 / p2.z);
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:839:9
[INFO] [stderr]     |
[INFO] [stderr] 839 |     let mut normal_x_02 = interpolate_float(p0.y, normal0.x, p2.y, normal2.x);
[INFO] [stderr]     |         ----^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:840:9
[INFO] [stderr]     |
[INFO] [stderr] 840 |     let mut normal_y_02 = interpolate_float(p0.y, normal0.y, p2.y, normal2.y);
[INFO] [stderr]     |         ----^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:841:9
[INFO] [stderr]     |
[INFO] [stderr] 841 |     let mut normal_z_02 = interpolate_float(p0.y, normal0.z, p2.y, normal2.z);
[INFO] [stderr]     |         ----^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:223:13
[INFO] [stderr]     |
[INFO] [stderr] 223 |         for i in 1..dx {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:248:13
[INFO] [stderr]     |
[INFO] [stderr] 248 |         for i in 1..dy {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/main.rs:448:13
[INFO] [stderr]     |
[INFO] [stderr] 448 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/main.rs:488:13
[INFO] [stderr]     |
[INFO] [stderr] 488 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> src/main.rs:710:9
[INFO] [stderr]     |
[INFO] [stderr] 710 |     let size = (z_max - z_min).abs();
[INFO] [stderr]     |         ^^^^ help: consider prefixing with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `red`
[INFO] [stderr]     --> src/main.rs:1185:9
[INFO] [stderr]      |
[INFO] [stderr] 1185 |     let red = Color { r: 255, g: 0, b: 0 };
[INFO] [stderr]      |         ^^^ help: consider prefixing with an underscore: `_red`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `green`
[INFO] [stderr]     --> src/main.rs:1186:9
[INFO] [stderr]      |
[INFO] [stderr] 1186 |     let green = Color { r: 0, g: 255, b: 0 };
[INFO] [stderr]      |         ^^^^^ help: consider prefixing with an underscore: `_green`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `blue`
[INFO] [stderr]     --> src/main.rs:1187:9
[INFO] [stderr]      |
[INFO] [stderr] 1187 |     let blue = Color { r: 0, g: 0, b: 255 };
[INFO] [stderr]      |         ^^^^ help: consider prefixing with an underscore: `_blue`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `white`
[INFO] [stderr]     --> src/main.rs:1188:9
[INFO] [stderr]      |
[INFO] [stderr] 1188 |     let white = Color { r: 255, g: 255, b: 255 };
[INFO] [stderr]      |         ^^^^^ help: consider prefixing with an underscore: `_white`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sphere`
[INFO] [stderr]     --> src/main.rs:1194:9
[INFO] [stderr]      |
[INFO] [stderr] 1194 |     let sphere = sphere(35);
[INFO] [stderr]      |         ^^^^^^ help: consider prefixing with an underscore: `_sphere`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cube`
[INFO] [stderr]     --> src/main.rs:1195:9
[INFO] [stderr]      |
[INFO] [stderr] 1195 |     let cube = cube(0.9);
[INFO] [stderr]      |         ^^^^ help: consider prefixing with an underscore: `_cube`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `torus`
[INFO] [stderr]     --> src/main.rs:1199:9
[INFO] [stderr]      |
[INFO] [stderr] 1199 |     let torus = ply2::load_model("resources/torus.ply2");
[INFO] [stderr]      |         ^^^^^ help: consider prefixing with an underscore: `_torus`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `current_instance_index`
[INFO] [stderr]     --> src/main.rs:1204:13
[INFO] [stderr]      |
[INFO] [stderr] 1204 |     let mut current_instance_index: Option<i32> = None;
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_current_instance_index`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/ray_tracing.rs:208:13
[INFO] [stderr]     |
[INFO] [stderr] 208 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/buffer_canvas.rs:149:17
[INFO] [stderr]     |
[INFO] [stderr] 149 |             for i in 1..dx {
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/buffer_canvas.rs:170:17
[INFO] [stderr]     |
[INFO] [stderr] 170 |             for i in 1..dy {
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]   --> src/ply2.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut rng = rand::thread_rng();
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1052:9
[INFO] [stderr]      |
[INFO] [stderr] 1052 |     let mut x02 = interpolate_int(p0.y, p0.x, p2.y, p2.x);
[INFO] [stderr]      |         ----^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1053:9
[INFO] [stderr]      |
[INFO] [stderr] 1053 |     let mut h02 = interpolate_float(p0.y, p0.h, p2.y, p2.h);
[INFO] [stderr]      |         ----^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1054:9
[INFO] [stderr]      |
[INFO] [stderr] 1054 |     let mut iz02 = interpolate_float(p0.y, 1.0 / p0.z, p2.y, 1.0 / p2.z);
[INFO] [stderr]      |         ----^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1055:9
[INFO] [stderr]      |
[INFO] [stderr] 1055 |     let mut uz02 = interpolate_float(p0.y, uv0.u / p0.z, p2.y, uv2.u / p2.z);
[INFO] [stderr]      |         ----^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1056:9
[INFO] [stderr]      |
[INFO] [stderr] 1056 |     let mut vz02 = interpolate_float(p0.y, uv0.v / p0.z, p2.y, uv2.v / p2.z);
[INFO] [stderr]      |         ----^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1057:9
[INFO] [stderr]      |
[INFO] [stderr] 1057 |     let mut normal_x_02 = interpolate_float(p0.y, normal0.x, p2.y, normal2.x);
[INFO] [stderr]      |         ----^^^^^^^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1058:9
[INFO] [stderr]      |
[INFO] [stderr] 1058 |     let mut normal_y_02 = interpolate_float(p0.y, normal0.y, p2.y, normal2.y);
[INFO] [stderr]      |         ----^^^^^^^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1059:9
[INFO] [stderr]      |
[INFO] [stderr] 1059 |     let mut normal_z_02 = interpolate_float(p0.y, normal0.z, p2.y, normal2.z);
[INFO] [stderr]      |         ----^^^^^^^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `camera`
[INFO] [stderr]    --> src/rendering.rs:417:5
[INFO] [stderr]     |
[INFO] [stderr] 417 |     camera: &ProjectiveCamera,
[INFO] [stderr]     |     ^^^^^^ help: consider prefixing with an underscore: `_camera`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h_segment`
[INFO] [stderr]    --> src/rendering.rs:589:13
[INFO] [stderr]     |
[INFO] [stderr] 589 |         let h_segment = interpolate_float(x_l, h_left[y_index], x_r, h_right[y_index]);
[INFO] [stderr]     |             ^^^^^^^^^ help: consider prefixing with an underscore: `_h_segment`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h_segment`
[INFO] [stderr]    --> src/rendering.rs:746:13
[INFO] [stderr]     |
[INFO] [stderr] 746 |         let h_segment = interpolate_float(x_l, h_left[y_index], x_r, h_right[y_index]);
[INFO] [stderr]     |             ^^^^^^^^^ help: consider prefixing with an underscore: `_h_segment`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v0` is never read
[INFO] [stderr]    --> src/rendering.rs:800:9
[INFO] [stderr]     |
[INFO] [stderr] 800 |         v0 = v2;
[INFO] [stderr]     |         ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v1` is never read
[INFO] [stderr]    --> src/rendering.rs:813:9
[INFO] [stderr]     |
[INFO] [stderr] 813 |         v1 = v2;
[INFO] [stderr]     |         ^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v2` is never read
[INFO] [stderr]    --> src/rendering.rs:814:9
[INFO] [stderr]     |
[INFO] [stderr] 814 |         v2 = swap;
[INFO] [stderr]     |         ^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h_segment`
[INFO] [stderr]    --> src/rendering.rs:927:13
[INFO] [stderr]     |
[INFO] [stderr] 927 |         let h_segment = interpolate_float(x_l, h_left[y_index], x_r, h_right[y_index]);
[INFO] [stderr]     |             ^^^^^^^^^ help: consider prefixing with an underscore: `_h_segment`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v0` is never read
[INFO] [stderr]     --> src/rendering.rs:1004:9
[INFO] [stderr]      |
[INFO] [stderr] 1004 |         v0 = v2;
[INFO] [stderr]      |         ^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v1` is never read
[INFO] [stderr]     --> src/rendering.rs:1021:9
[INFO] [stderr]      |
[INFO] [stderr] 1021 |         v1 = v2;
[INFO] [stderr]      |         ^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `v2` is never read
[INFO] [stderr]     --> src/rendering.rs:1022:9
[INFO] [stderr]      |
[INFO] [stderr] 1022 |         v2 = swap;
[INFO] [stderr]      |         ^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `h_segment`
[INFO] [stderr]     --> src/rendering.rs:1171:13
[INFO] [stderr]      |
[INFO] [stderr] 1171 |         let h_segment = interpolate_float(x_l, h_left[y_index], x_r, h_right[y_index]);
[INFO] [stderr]      |             ^^^^^^^^^ help: consider prefixing with an underscore: `_h_segment`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]     --> src/rendering.rs:1247:9
[INFO] [stderr]      |
[INFO] [stderr] 1247 |     for i in i0..(i1 + 1) {
[INFO] [stderr]      |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]     --> src/rendering.rs:1263:9
[INFO] [stderr]      |
[INFO] [stderr] 1263 |     for i in i0..(i1 + 1) {
[INFO] [stderr]      |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: private type `Point2D` in public interface (error E0446)
[INFO] [stderr]   --> src/projective_camera.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | /     pub fn project(&self, point: Vector3f) -> Point2D {
[INFO] [stderr] 20 | |         Point2D {
[INFO] [stderr] 21 | |             x: point.x * self.projection_plane_z / point.z,
[INFO] [stderr] 22 | |             y: point.y * self.projection_plane_z / point.z
[INFO] [stderr] 23 | |         }
[INFO] [stderr] 24 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `Point2D` in public interface (error E0446)
[INFO] [stderr]   --> src/projective_camera.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | /     pub fn project_vertex(&self, vertex: Vector4f) -> Point2D {
[INFO] [stderr] 27 | |         Point2D {
[INFO] [stderr] 28 | |             x: vertex.x * self.projection_plane_z / vertex.z,
[INFO] [stderr] 29 | |             y: vertex.y * self.projection_plane_z / vertex.z
[INFO] [stderr] 30 | |         }
[INFO] [stderr] 31 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `Point` in public interface (error E0446)
[INFO] [stderr]   --> src/buffer_canvas.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 | /     pub fn viewport_to_canvas(&self, vertex: Vector4f, camera: &ProjectiveCamera) -> Point {
[INFO] [stderr] 47 | |         let point = camera.project_vertex(vertex);
[INFO] [stderr] 48 | |         let canvas_size = self.size as f64;
[INFO] [stderr] 49 | |         Point {
[INFO] [stderr] ...  |
[INFO] [stderr] 54 | |         }
[INFO] [stderr] 55 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `Point` in public interface (error E0446)
[INFO] [stderr]    --> src/buffer_canvas.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 | /     pub fn draw_line(&mut self, start: Point, end: Point, color: Color) {
[INFO] [stderr] 109 | |         trace!("drawing line [{},{}] - [{},{}]", start.x, start.y, end.x, end.y);
[INFO] [stderr] 110 | |         let start_pixel = self.point_to_pixel(start.x, start.y, color);
[INFO] [stderr] 111 | |         let end_pixel = self.point_to_pixel(end.x, end.y, color);
[INFO] [stderr] ...   |
[INFO] [stderr] 118 | |         self.rasterize_line(start_pixel, end_pixel);
[INFO] [stderr] 119 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `render_scene_to_buffer`
[INFO] [stderr]   --> src/ray_tracing.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / pub fn render_scene_to_buffer(
[INFO] [stderr] 25 | |     spheres: &Vec<Sphere>,
[INFO] [stderr] 26 | |     lights: &Vec<Light>,
[INFO] [stderr] 27 | |     buffer: &mut [u8],
[INFO] [stderr] ...  |
[INFO] [stderr] 66 | |     }
[INFO] [stderr] 67 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `canvas_to_viewport`
[INFO] [stderr]   --> src/ray_tracing.rs:69:1
[INFO] [stderr]    |
[INFO] [stderr] 69 | fn canvas_to_viewport(x: i32, y: i32, canvas_width: i32, canvas_height: i32) -> Vector3f {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `compute_lighting`
[INFO] [stderr]    --> src/ray_tracing.rs:81:1
[INFO] [stderr]     |
[INFO] [stderr] 81  | / fn compute_lighting(
[INFO] [stderr] 82  | |     point: Vector3f,
[INFO] [stderr] 83  | |     normal: Vector3f,
[INFO] [stderr] 84  | |     view: Vector3f,
[INFO] [stderr] ...   |
[INFO] [stderr] 119 | |     result
[INFO] [stderr] 120 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `compute_light_from_direction`
[INFO] [stderr]    --> src/ray_tracing.rs:122:1
[INFO] [stderr]     |
[INFO] [stderr] 122 | / fn compute_light_from_direction(
[INFO] [stderr] 123 | |     point: Vector3f,
[INFO] [stderr] 124 | |     normal: Vector3f,
[INFO] [stderr] 125 | |     view: Vector3f,
[INFO] [stderr] ...   |
[INFO] [stderr] 171 | |     result
[INFO] [stderr] 172 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `closest_intersection`
[INFO] [stderr]    --> src/ray_tracing.rs:174:1
[INFO] [stderr]     |
[INFO] [stderr] 174 | / fn closest_intersection(
[INFO] [stderr] 175 | |     origin: Vector3f,
[INFO] [stderr] 176 | |     direction: Vector3f,
[INFO] [stderr] 177 | |     min_t: f64,
[INFO] [stderr] ...   |
[INFO] [stderr] 196 | |     (closest_sphere, closest_t)
[INFO] [stderr] 197 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `trace_ray`
[INFO] [stderr]    --> src/ray_tracing.rs:199:1
[INFO] [stderr]     |
[INFO] [stderr] 199 | / fn trace_ray(
[INFO] [stderr] 200 | |     spheres: &Vec<Sphere>,
[INFO] [stderr] 201 | |     lights: &Vec<Light>,
[INFO] [stderr] 202 | |     origin: Vector3f,
[INFO] [stderr] ...   |
[INFO] [stderr] 268 | |     }
[INFO] [stderr] 269 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `add_colors`
[INFO] [stderr]    --> src/ray_tracing.rs:271:1
[INFO] [stderr]     |
[INFO] [stderr] 271 | fn add_colors(color1: Color, color2: Color) -> Color {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `contains`
[INFO] [stderr]    --> src/ray_tracing.rs:279:1
[INFO] [stderr]     |
[INFO] [stderr] 279 | fn contains(range: (f64, f64), n: f64) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `intersect_ray_with_sphere`
[INFO] [stderr]    --> src/ray_tracing.rs:284:1
[INFO] [stderr]     |
[INFO] [stderr] 284 | fn intersect_ray_with_sphere(origin: Vector3f, direction: Vector3f, sphere: Sphere) -> (f64, f64) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `multiply_vec_and_mat`
[INFO] [stderr]   --> src/vectors.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn multiply_vec_and_mat(vec: [f64; 3], mat: [[f64; 3]; 3]) -> [f64; 3] {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rotation_around_y`
[INFO] [stderr]   --> src/vectors.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn rotation_around_y(d: f64) -> [[f64; 3]; 3] {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `project`
[INFO] [stderr]   --> src/projective_camera.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn project(&self, point: Vector3f) -> Point2D {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `x_min`
[INFO] [stderr]   --> src/main.rs:70:16
[INFO] [stderr]    |
[INFO] [stderr] 70 | struct Frame { x_min: f64, x_max: f64, y_min: f64, y_max: f64 }
[INFO] [stderr]    |                ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `x_max`
[INFO] [stderr]   --> src/main.rs:70:28
[INFO] [stderr]    |
[INFO] [stderr] 70 | struct Frame { x_min: f64, x_max: f64, y_min: f64, y_max: f64 }
[INFO] [stderr]    |                            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `y_min`
[INFO] [stderr]   --> src/main.rs:70:40
[INFO] [stderr]    |
[INFO] [stderr] 70 | struct Frame { x_min: f64, x_max: f64, y_min: f64, y_max: f64 }
[INFO] [stderr]    |                                        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `y_max`
[INFO] [stderr]   --> src/main.rs:70:52
[INFO] [stderr]    |
[INFO] [stderr] 70 | struct Frame { x_min: f64, x_max: f64, y_min: f64, y_max: f64 }
[INFO] [stderr]    |                                                    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `project`
[INFO] [stderr]    --> src/main.rs:178:1
[INFO] [stderr]     |
[INFO] [stderr] 178 | fn project(point3d: Vector3f) -> Point2D {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `normalize`
[INFO] [stderr]    --> src/main.rs:182:1
[INFO] [stderr]     |
[INFO] [stderr] 182 | fn normalize(point2d: Point2D, frame: Frame) -> Point2D {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rasterize`
[INFO] [stderr]    --> src/main.rs:189:1
[INFO] [stderr]     |
[INFO] [stderr] 189 | fn rasterize(point: Point2D, size: usize) -> Pixel {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `simple_line`
[INFO] [stderr]    --> src/main.rs:267:1
[INFO] [stderr]     |
[INFO] [stderr] 267 | fn simple_line(start: Pixel, end: Pixel, buffer: &mut [u8], size: usize) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `face_visible`
[INFO] [stderr]    --> src/main.rs:302:1
[INFO] [stderr]     |
[INFO] [stderr] 302 | fn face_visible(face: &Vec<i32>, vertices: &[Vector3f]) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `face_visible2`
[INFO] [stderr]    --> src/main.rs:313:1
[INFO] [stderr]     |
[INFO] [stderr] 313 | fn face_visible2(face: &Vec<i32>, vertices: &[Vector3f]) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `draw_face`
[INFO] [stderr]    --> src/main.rs:328:1
[INFO] [stderr]     |
[INFO] [stderr] 328 | / fn draw_face(face: &Vec<i32>,
[INFO] [stderr] 329 | |              vertex_pixels: &Vec<Pixel>,
[INFO] [stderr] 330 | |              buffer: &mut [u8],
[INFO] [stderr] 331 | |              size: usize) {
[INFO] [stderr] ...   |
[INFO] [stderr] 347 | |     }
[INFO] [stderr] 348 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `transform`
[INFO] [stderr]    --> src/main.rs:350:1
[INFO] [stderr]     |
[INFO] [stderr] 350 | fn transform(vertices: &Vec<Vector3f>, vector: Vector3f) -> Vec<Vector3f> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rotated_cube_vertices`
[INFO] [stderr]    --> src/main.rs:364:1
[INFO] [stderr]     |
[INFO] [stderr] 364 | fn rotated_cube_vertices(t: f64) -> [Vector3f; 8] {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rotated_cube`
[INFO] [stderr]    --> src/main.rs:418:1
[INFO] [stderr]     |
[INFO] [stderr] 418 | fn rotated_cube(t: f64) -> (Vec<Vector3f>, Vec<Vec<i32>>) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `triangle`
[INFO] [stderr]    --> src/main.rs:435:1
[INFO] [stderr]     |
[INFO] [stderr] 435 | fn triangle<'a>(size: f64) -> Model<'a> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `two_unit_cube`
[INFO] [stderr]    --> src/main.rs:642:1
[INFO] [stderr]     |
[INFO] [stderr] 642 | fn two_unit_cube<'a>() -> Model<'a> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `enclosing_frame`
[INFO] [stderr]    --> src/main.rs:646:1
[INFO] [stderr]     |
[INFO] [stderr] 646 | fn enclosing_frame(vertices: &Vec<Vector3f>) -> Frame {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_z_transform`
[INFO] [stderr]    --> src/main.rs:697:1
[INFO] [stderr]     |
[INFO] [stderr] 697 | fn find_z_transform(vertices: &Vec<Vector3f>) -> f64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `render_model_to_buffer`
[INFO] [stderr]    --> src/main.rs:715:1
[INFO] [stderr]     |
[INFO] [stderr] 715 | / fn render_model_to_buffer(
[INFO] [stderr] 716 | |     buffer: &mut [u8],
[INFO] [stderr] 717 | |     size: usize,
[INFO] [stderr] 718 | |     vertices: Vec<Vector3f>,
[INFO] [stderr] ...   |
[INFO] [stderr] 760 | |     //    rasterize_line(Pixel { x: 60, y: 50 }, Pixel { x: 120, y: 60 }, &mut buffer, size);
[INFO] [stderr] 761 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `show_buffer_in_window`
[INFO] [stderr]    --> src/main.rs:763:1
[INFO] [stderr]     |
[INFO] [stderr] 763 | fn show_buffer_in_window(buffer: &mut [u8], size: usize) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rotating_cube_window`
[INFO] [stderr]    --> src/main.rs:817:1
[INFO] [stderr]     |
[INFO] [stderr] 817 | fn rotating_cube_window(buffer: &mut [u8], size: usize) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `three_spheres_window`
[INFO] [stderr]    --> src/main.rs:927:1
[INFO] [stderr]     |
[INFO] [stderr] 927 | fn three_spheres_window(buffer: &mut [u8], size: usize) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `render_video`
[INFO] [stderr]     --> src/main.rs:1073:1
[INFO] [stderr]      |
[INFO] [stderr] 1073 | fn render_video() {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `draw_wireframe_triangle`
[INFO] [stderr]     --> src/main.rs:1085:1
[INFO] [stderr]      |
[INFO] [stderr] 1085 | / fn draw_wireframe_triangle(
[INFO] [stderr] 1086 | |     p0: Point,
[INFO] [stderr] 1087 | |     p1: Point,
[INFO] [stderr] 1088 | |     p2: Point,
[INFO] [stderr] ...    |
[INFO] [stderr] 1094 | |     canvas.draw_line(p2, p0, color);
[INFO] [stderr] 1095 | | }
[INFO] [stderr]      | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `face_normal_direction_in_right`
[INFO] [stderr]    --> src/rendering.rs:155:1
[INFO] [stderr]     |
[INFO] [stderr] 155 | fn face_normal_direction_in_right(face: &Vec<i32>, vertices: &[Vector4f]) -> Vector3f {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `face_normal_direction_in_left`
[INFO] [stderr]    --> src/rendering.rs:167:1
[INFO] [stderr]     |
[INFO] [stderr] 167 | fn face_normal_direction_in_left(triangle: &Triangle, vertices: &[Vector4f]) -> Vector3f {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_vertex_outside`
[INFO] [stderr]    --> src/rendering.rs:312:1
[INFO] [stderr]     |
[INFO] [stderr] 312 | fn is_vertex_outside(plane: &Plane, vertex: Vector4f) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_vertex_inside`
[INFO] [stderr]    --> src/rendering.rs:318:1
[INFO] [stderr]     |
[INFO] [stderr] 318 | fn is_vertex_inside(plane: &Plane, vertex: Vector4f) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `render_wireframe_triangle`
[INFO] [stderr]    --> src/rendering.rs:475:1
[INFO] [stderr]     |
[INFO] [stderr] 475 | / fn render_wireframe_triangle(
[INFO] [stderr] 476 | |     triangle: Triangle4f,
[INFO] [stderr] 477 | |     camera: &ProjectiveCamera,
[INFO] [stderr] 478 | |     canvas: &mut BufferCanvas
[INFO] [stderr] ...   |
[INFO] [stderr] 486 | |     canvas.draw_line(c, a, Color { r: 255, g: 255, b: 255 });
[INFO] [stderr] 487 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:448:9
[INFO] [stderr]     |
[INFO] [stderr] 448 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:488:9
[INFO] [stderr]     |
[INFO] [stderr] 488 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/main.rs:1147:9
[INFO] [stderr]      |
[INFO] [stderr] 1147 |     let mut rendering_settings = RenderingSettings {
[INFO] [stderr]      |         ----^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/main.rs:1204:9
[INFO] [stderr]      |
[INFO] [stderr] 1204 |     let mut current_instance_index: Option<i32> = None;
[INFO] [stderr]      |         ----^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ray_tracing.rs:208:9
[INFO] [stderr]     |
[INFO] [stderr] 208 |     let mut rng = rand::thread_rng();
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/ply2.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mut rng = rand::thread_rng();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:537:9
[INFO] [stderr]     |
[INFO] [stderr] 537 |     let mut x02 = interpolate_int(p0.y, p0.x, p2.y, p2.x);
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:538:9
[INFO] [stderr]     |
[INFO] [stderr] 538 |     let mut h02 = interpolate_float(p0.y, p0.h, p2.y, p2.h);
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:539:9
[INFO] [stderr]     |
[INFO] [stderr] 539 |     let mut iz02 = interpolate_float(p0.y, 1.0 / p0.z, p2.y, 1.0 / p2.z);
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:556:9
[INFO] [stderr]     |
[INFO] [stderr] 556 |     let mut x_left;
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:557:9
[INFO] [stderr]     |
[INFO] [stderr] 557 |     let mut x_right;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:558:9
[INFO] [stderr]     |
[INFO] [stderr] 558 |     let mut h_left;
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:559:9
[INFO] [stderr]     |
[INFO] [stderr] 559 |     let mut h_right;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:560:9
[INFO] [stderr]     |
[INFO] [stderr] 560 |     let mut iz_left;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:561:9
[INFO] [stderr]     |
[INFO] [stderr] 561 |     let mut iz_right;
[INFO] [stderr]     |         ----^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:679:9
[INFO] [stderr]     |
[INFO] [stderr] 679 |     let mut x02 = interpolate_int(p0.y, p0.x, p2.y, p2.x);
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:680:9
[INFO] [stderr]     |
[INFO] [stderr] 680 |     let mut h02 = interpolate_float(p0.y, p0.h, p2.y, p2.h);
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:681:9
[INFO] [stderr]     |
[INFO] [stderr] 681 |     let mut iz02 = interpolate_float(p0.y, 1.0 / p0.z, p2.y, 1.0 / p2.z);
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:682:9
[INFO] [stderr]     |
[INFO] [stderr] 682 |     let mut i02 = interpolate_float(p0.y, i0, p2.y, i2);
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:705:9
[INFO] [stderr]     |
[INFO] [stderr] 705 |     let mut x_left;
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:706:9
[INFO] [stderr]     |
[INFO] [stderr] 706 |     let mut x_right;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:707:9
[INFO] [stderr]     |
[INFO] [stderr] 707 |     let mut h_left;
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:708:9
[INFO] [stderr]     |
[INFO] [stderr] 708 |     let mut h_right;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:709:9
[INFO] [stderr]     |
[INFO] [stderr] 709 |     let mut iz_left;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:710:9
[INFO] [stderr]     |
[INFO] [stderr] 710 |     let mut iz_right;
[INFO] [stderr]     |         ----^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:711:9
[INFO] [stderr]     |
[INFO] [stderr] 711 |     let mut i_left;
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:712:9
[INFO] [stderr]     |
[INFO] [stderr] 712 |     let mut i_right;
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:836:9
[INFO] [stderr]     |
[INFO] [stderr] 836 |     let mut x02 = interpolate_int(p0.y, p0.x, p2.y, p2.x);
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:837:9
[INFO] [stderr]     |
[INFO] [stderr] 837 |     let mut h02 = interpolate_float(p0.y, p0.h, p2.y, p2.h);
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:838:9
[INFO] [stderr]     |
[INFO] [stderr] 838 |     let mut iz02 = interpolate_float(p0.y, 1.0 / p0.z, p2.y, 1.0 / p2.z);
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:839:9
[INFO] [stderr]     |
[INFO] [stderr] 839 |     let mut normal_x_02 = interpolate_float(p0.y, normal0.x, p2.y, normal2.x);
[INFO] [stderr]     |         ----^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:840:9
[INFO] [stderr]     |
[INFO] [stderr] 840 |     let mut normal_y_02 = interpolate_float(p0.y, normal0.y, p2.y, normal2.y);
[INFO] [stderr]     |         ----^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rendering.rs:841:9
[INFO] [stderr]     |
[INFO] [stderr] 841 |     let mut normal_z_02 = interpolate_float(p0.y, normal0.z, p2.y, normal2.z);
[INFO] [stderr]     |         ----^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1052:9
[INFO] [stderr]      |
[INFO] [stderr] 1052 |     let mut x02 = interpolate_int(p0.y, p0.x, p2.y, p2.x);
[INFO] [stderr]      |         ----^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1053:9
[INFO] [stderr]      |
[INFO] [stderr] 1053 |     let mut h02 = interpolate_float(p0.y, p0.h, p2.y, p2.h);
[INFO] [stderr]      |         ----^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1054:9
[INFO] [stderr]      |
[INFO] [stderr] 1054 |     let mut iz02 = interpolate_float(p0.y, 1.0 / p0.z, p2.y, 1.0 / p2.z);
[INFO] [stderr]      |         ----^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1055:9
[INFO] [stderr]      |
[INFO] [stderr] 1055 |     let mut uz02 = interpolate_float(p0.y, uv0.u / p0.z, p2.y, uv2.u / p2.z);
[INFO] [stderr]      |         ----^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1056:9
[INFO] [stderr]      |
[INFO] [stderr] 1056 |     let mut vz02 = interpolate_float(p0.y, uv0.v / p0.z, p2.y, uv2.v / p2.z);
[INFO] [stderr]      |         ----^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1057:9
[INFO] [stderr]      |
[INFO] [stderr] 1057 |     let mut normal_x_02 = interpolate_float(p0.y, normal0.x, p2.y, normal2.x);
[INFO] [stderr]      |         ----^^^^^^^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1058:9
[INFO] [stderr]      |
[INFO] [stderr] 1058 |     let mut normal_y_02 = interpolate_float(p0.y, normal0.y, p2.y, normal2.y);
[INFO] [stderr]      |         ----^^^^^^^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]     --> src/rendering.rs:1059:9
[INFO] [stderr]      |
[INFO] [stderr] 1059 |     let mut normal_z_02 = interpolate_float(p0.y, normal0.z, p2.y, normal2.z);
[INFO] [stderr]      |         ----^^^^^^^^^^^
[INFO] [stderr]      |         |
[INFO] [stderr]      |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: private type `Point2D` in public interface (error E0446)
[INFO] [stderr]   --> src/projective_camera.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | /     pub fn project(&self, point: Vector3f) -> Point2D {
[INFO] [stderr] 20 | |         Point2D {
[INFO] [stderr] 21 | |             x: point.x * self.projection_plane_z / point.z,
[INFO] [stderr] 22 | |             y: point.y * self.projection_plane_z / point.z
[INFO] [stderr] 23 | |         }
[INFO] [stderr] 24 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `Point2D` in public interface (error E0446)
[INFO] [stderr]   --> src/projective_camera.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | /     pub fn project_vertex(&self, vertex: Vector4f) -> Point2D {
[INFO] [stderr] 27 | |         Point2D {
[INFO] [stderr] 28 | |             x: vertex.x * self.projection_plane_z / vertex.z,
[INFO] [stderr] 29 | |             y: vertex.y * self.projection_plane_z / vertex.z
[INFO] [stderr] 30 | |         }
[INFO] [stderr] 31 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `Point` in public interface (error E0446)
[INFO] [stderr]   --> src/buffer_canvas.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 | /     pub fn viewport_to_canvas(&self, vertex: Vector4f, camera: &ProjectiveCamera) -> Point {
[INFO] [stderr] 47 | |         let point = camera.project_vertex(vertex);
[INFO] [stderr] 48 | |         let canvas_size = self.size as f64;
[INFO] [stderr] 49 | |         Point {
[INFO] [stderr] ...  |
[INFO] [stderr] 54 | |         }
[INFO] [stderr] 55 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: private type `Point` in public interface (error E0446)
[INFO] [stderr]    --> src/buffer_canvas.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 | /     pub fn draw_line(&mut self, start: Point, end: Point, color: Color) {
[INFO] [stderr] 109 | |         trace!("drawing line [{},{}] - [{},{}]", start.x, start.y, end.x, end.y);
[INFO] [stderr] 110 | |         let start_pixel = self.point_to_pixel(start.x, start.y, color);
[INFO] [stderr] 111 | |         let end_pixel = self.point_to_pixel(end.x, end.y, color);
[INFO] [stderr] ...   |
[INFO] [stderr] 118 | |         self.rasterize_line(start_pixel, end_pixel);
[INFO] [stderr] 119 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `render_scene_to_buffer`
[INFO] [stderr]   --> src/ray_tracing.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | / pub fn render_scene_to_buffer(
[INFO] [stderr] 25 | |     spheres: &Vec<Sphere>,
[INFO] [stderr] 26 | |     lights: &Vec<Light>,
[INFO] [stderr] 27 | |     buffer: &mut [u8],
[INFO] [stderr] ...  |
[INFO] [stderr] 66 | |     }
[INFO] [stderr] 67 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `compute_lighting`
[INFO] [stderr]    --> src/ray_tracing.rs:81:1
[INFO] [stderr]     |
[INFO] [stderr] 81  | / fn compute_lighting(
[INFO] [stderr] 82  | |     point: Vector3f,
[INFO] [stderr] 83  | |     normal: Vector3f,
[INFO] [stderr] 84  | |     view: Vector3f,
[INFO] [stderr] ...   |
[INFO] [stderr] 119 | |     result
[INFO] [stderr] 120 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `compute_light_from_direction`
[INFO] [stderr]    --> src/ray_tracing.rs:122:1
[INFO] [stderr]     |
[INFO] [stderr] 122 | / fn compute_light_from_direction(
[INFO] [stderr] 123 | |     point: Vector3f,
[INFO] [stderr] 124 | |     normal: Vector3f,
[INFO] [stderr] 125 | |     view: Vector3f,
[INFO] [stderr] ...   |
[INFO] [stderr] 171 | |     result
[INFO] [stderr] 172 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `closest_intersection`
[INFO] [stderr]    --> src/ray_tracing.rs:174:1
[INFO] [stderr]     |
[INFO] [stderr] 174 | / fn closest_intersection(
[INFO] [stderr] 175 | |     origin: Vector3f,
[INFO] [stderr] 176 | |     direction: Vector3f,
[INFO] [stderr] 177 | |     min_t: f64,
[INFO] [stderr] ...   |
[INFO] [stderr] 196 | |     (closest_sphere, closest_t)
[INFO] [stderr] 197 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `trace_ray`
[INFO] [stderr]    --> src/ray_tracing.rs:199:1
[INFO] [stderr]     |
[INFO] [stderr] 199 | / fn trace_ray(
[INFO] [stderr] 200 | |     spheres: &Vec<Sphere>,
[INFO] [stderr] 201 | |     lights: &Vec<Light>,
[INFO] [stderr] 202 | |     origin: Vector3f,
[INFO] [stderr] ...   |
[INFO] [stderr] 268 | |     }
[INFO] [stderr] 269 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `add_colors`
[INFO] [stderr]    --> src/ray_tracing.rs:271:1
[INFO] [stderr]     |
[INFO] [stderr] 271 | fn add_colors(color1: Color, color2: Color) -> Color {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `contains`
[INFO] [stderr]    --> src/ray_tracing.rs:279:1
[INFO] [stderr]     |
[INFO] [stderr] 279 | fn contains(range: (f64, f64), n: f64) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `intersect_ray_with_sphere`
[INFO] [stderr]    --> src/ray_tracing.rs:284:1
[INFO] [stderr]     |
[INFO] [stderr] 284 | fn intersect_ray_with_sphere(origin: Vector3f, direction: Vector3f, sphere: Sphere) -> (f64, f64) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rotation_around_y`
[INFO] [stderr]   --> src/vectors.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn rotation_around_y(d: f64) -> [[f64; 3]; 3] {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `project`
[INFO] [stderr]   --> src/projective_camera.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn project(&self, point: Vector3f) -> Point2D {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `x_min`
[INFO] [stderr]   --> src/main.rs:70:16
[INFO] [stderr]    |
[INFO] [stderr] 70 | struct Frame { x_min: f64, x_max: f64, y_min: f64, y_max: f64 }
[INFO] [stderr]    |                ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `x_max`
[INFO] [stderr]   --> src/main.rs:70:28
[INFO] [stderr]    |
[INFO] [stderr] 70 | struct Frame { x_min: f64, x_max: f64, y_min: f64, y_max: f64 }
[INFO] [stderr]    |                            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `y_min`
[INFO] [stderr]   --> src/main.rs:70:40
[INFO] [stderr]    |
[INFO] [stderr] 70 | struct Frame { x_min: f64, x_max: f64, y_min: f64, y_max: f64 }
[INFO] [stderr]    |                                        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `y_max`
[INFO] [stderr]   --> src/main.rs:70:52
[INFO] [stderr]    |
[INFO] [stderr] 70 | struct Frame { x_min: f64, x_max: f64, y_min: f64, y_max: f64 }
[INFO] [stderr]    |                                                    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `project`
[INFO] [stderr]    --> src/main.rs:178:1
[INFO] [stderr]     |
[INFO] [stderr] 178 | fn project(point3d: Vector3f) -> Point2D {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `normalize`
[INFO] [stderr]    --> src/main.rs:182:1
[INFO] [stderr]     |
[INFO] [stderr] 182 | fn normalize(point2d: Point2D, frame: Frame) -> Point2D {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rasterize`
[INFO] [stderr]    --> src/main.rs:189:1
[INFO] [stderr]     |
[INFO] [stderr] 189 | fn rasterize(point: Point2D, size: usize) -> Pixel {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `simple_line`
[INFO] [stderr]    --> src/main.rs:267:1
[INFO] [stderr]     |
[INFO] [stderr] 267 | fn simple_line(start: Pixel, end: Pixel, buffer: &mut [u8], size: usize) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `face_visible`
[INFO] [stderr]    --> src/main.rs:302:1
[INFO] [stderr]     |
[INFO] [stderr] 302 | fn face_visible(face: &Vec<i32>, vertices: &[Vector3f]) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `face_visible2`
[INFO] [stderr]    --> src/main.rs:313:1
[INFO] [stderr]     |
[INFO] [stderr] 313 | fn face_visible2(face: &Vec<i32>, vertices: &[Vector3f]) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `draw_face`
[INFO] [stderr]    --> src/main.rs:328:1
[INFO] [stderr]     |
[INFO] [stderr] 328 | / fn draw_face(face: &Vec<i32>,
[INFO] [stderr] 329 | |              vertex_pixels: &Vec<Pixel>,
[INFO] [stderr] 330 | |              buffer: &mut [u8],
[INFO] [stderr] 331 | |              size: usize) {
[INFO] [stderr] ...   |
[INFO] [stderr] 347 | |     }
[INFO] [stderr] 348 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `transform`
[INFO] [stderr]    --> src/main.rs:350:1
[INFO] [stderr]     |
[INFO] [stderr] 350 | fn transform(vertices: &Vec<Vector3f>, vector: Vector3f) -> Vec<Vector3f> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rotated_cube_vertices`
[INFO] [stderr]    --> src/main.rs:364:1
[INFO] [stderr]     |
[INFO] [stderr] 364 | fn rotated_cube_vertices(t: f64) -> [Vector3f; 8] {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rotated_cube`
[INFO] [stderr]    --> src/main.rs:418:1
[INFO] [stderr]     |
[INFO] [stderr] 418 | fn rotated_cube(t: f64) -> (Vec<Vector3f>, Vec<Vec<i32>>) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `triangle`
[INFO] [stderr]    --> src/main.rs:435:1
[INFO] [stderr]     |
[INFO] [stderr] 435 | fn triangle<'a>(size: f64) -> Model<'a> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `two_unit_cube`
[INFO] [stderr]    --> src/main.rs:642:1
[INFO] [stderr]     |
[INFO] [stderr] 642 | fn two_unit_cube<'a>() -> Model<'a> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `enclosing_frame`
[INFO] [stderr]    --> src/main.rs:646:1
[INFO] [stderr]     |
[INFO] [stderr] 646 | fn enclosing_frame(vertices: &Vec<Vector3f>) -> Frame {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_z_transform`
[INFO] [stderr]    --> src/main.rs:697:1
[INFO] [stderr]     |
[INFO] [stderr] 697 | fn find_z_transform(vertices: &Vec<Vector3f>) -> f64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `render_model_to_buffer`
[INFO] [stderr]    --> src/main.rs:715:1
[INFO] [stderr]     |
[INFO] [stderr] 715 | / fn render_model_to_buffer(
[INFO] [stderr] 716 | |     buffer: &mut [u8],
[INFO] [stderr] 717 | |     size: usize,
[INFO] [stderr] 718 | |     vertices: Vec<Vector3f>,
[INFO] [stderr] ...   |
[INFO] [stderr] 760 | |     //    rasterize_line(Pixel { x: 60, y: 50 }, Pixel { x: 120, y: 60 }, &mut buffer, size);
[INFO] [stderr] 761 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `show_buffer_in_window`
[INFO] [stderr]    --> src/main.rs:763:1
[INFO] [stderr]     |
[INFO] [stderr] 763 | fn show_buffer_in_window(buffer: &mut [u8], size: usize) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rotating_cube_window`
[INFO] [stderr]    --> src/main.rs:817:1
[INFO] [stderr]     |
[INFO] [stderr] 817 | fn rotating_cube_window(buffer: &mut [u8], size: usize) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `three_spheres_window`
[INFO] [stderr]    --> src/main.rs:927:1
[INFO] [stderr]     |
[INFO] [stderr] 927 | fn three_spheres_window(buffer: &mut [u8], size: usize) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `render_video`
[INFO] [stderr]     --> src/main.rs:1073:1
[INFO] [stderr]      |
[INFO] [stderr] 1073 | fn render_video() {
[INFO] [stderr]      | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `draw_wireframe_triangle`
[INFO] [stderr]     --> src/main.rs:1085:1
[INFO] [stderr]      |
[INFO] [stderr] 1085 | / fn draw_wireframe_triangle(
[INFO] [stderr] 1086 | |     p0: Point,
[INFO] [stderr] 1087 | |     p1: Point,
[INFO] [stderr] 1088 | |     p2: Point,
[INFO] [stderr] ...    |
[INFO] [stderr] 1094 | |     canvas.draw_line(p2, p0, color);
[INFO] [stderr] 1095 | | }
[INFO] [stderr]      | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `face_normal_direction_in_right`
[INFO] [stderr]    --> src/rendering.rs:155:1
[INFO] [stderr]     |
[INFO] [stderr] 155 | fn face_normal_direction_in_right(face: &Vec<i32>, vertices: &[Vector4f]) -> Vector3f {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `face_normal_direction_in_left`
[INFO] [stderr]    --> src/rendering.rs:167:1
[INFO] [stderr]     |
[INFO] [stderr] 167 | fn face_normal_direction_in_left(triangle: &Triangle, vertices: &[Vector4f]) -> Vector3f {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_vertex_outside`
[INFO] [stderr]    --> src/rendering.rs:312:1
[INFO] [stderr]     |
[INFO] [stderr] 312 | fn is_vertex_outside(plane: &Plane, vertex: Vector4f) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_vertex_inside`
[INFO] [stderr]    --> src/rendering.rs:318:1
[INFO] [stderr]     |
[INFO] [stderr] 318 | fn is_vertex_inside(plane: &Plane, vertex: Vector4f) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `render_wireframe_triangle`
[INFO] [stderr]    --> src/rendering.rs:475:1
[INFO] [stderr]     |
[INFO] [stderr] 475 | / fn render_wireframe_triangle(
[INFO] [stderr] 476 | |     triangle: Triangle4f,
[INFO] [stderr] 477 | |     camera: &ProjectiveCamera,
[INFO] [stderr] 478 | |     canvas: &mut BufferCanvas
[INFO] [stderr] ...   |
[INFO] [stderr] 486 | |     canvas.draw_line(c, a, Color { r: 255, g: 255, b: 255 });
[INFO] [stderr] 487 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.20s
[INFO] running `"docker" "inspect" "2b2e402f934a3170b429fd4724dbc78c06dea568758e5f35e058ece86499f62a"`
[INFO] running `"docker" "rm" "-f" "2b2e402f934a3170b429fd4724dbc78c06dea568758e5f35e058ece86499f62a"`
[INFO] [stdout] 2b2e402f934a3170b429fd4724dbc78c06dea568758e5f35e058ece86499f62a