[INFO] cloning repository https://github.com/clynamen/RayTracingInOneWeekendRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/clynamen/RayTracingInOneWeekendRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclynamen%2FRayTracingInOneWeekendRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclynamen%2FRayTracingInOneWeekendRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47f500db933d322f3396eecb0f2f29cc78f98030
[INFO] checking clynamen/RayTracingInOneWeekendRust against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclynamen%2FRayTracingInOneWeekendRust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/clynamen/RayTracingInOneWeekendRust
[INFO] finished tweaking git repo https://github.com/clynamen/RayTracingInOneWeekendRust
[INFO] tweaked toml for git repo https://github.com/clynamen/RayTracingInOneWeekendRust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/clynamen/RayTracingInOneWeekendRust on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/clynamen/RayTracingInOneWeekendRust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "inspect" "9388bd7ac463431b3aec8de296d2765cafbf254342d9af563ddf106420c40e42", kill_on_drop: false }`
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[INFO] [stdout] warning: unused imports: `normal3f_to_rgb8` and `rgb8_to_vector3f`
[INFO] [stdout]  --> src/renderer/renderer.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::types::{normal3f_to_rgb8, vector3f_to_rgb8, rgb8_to_vector3f};
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `scale_rgb8`
[INFO] [stdout]  --> src/renderer/renderer.rs:6:54
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::types::{Rgb8, Size2i, Vector2i, Vector3f, scale_rgb8, PointwiseSqrtExt };
[INFO] [stdout]   |                                                      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/renderer/renderer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `clone_trait_object`
[INFO] [stdout]  --> src/material/material.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use dyn_clone::{clone_trait_object, DynClone};
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:161:7
[INFO] [stdout]     |
[INFO] [stdout] 161 |     if(user_input.pressed_keys.contains(&Key::A)) {
[INFO] [stdout]     |       ^                                         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 161 -     if(user_input.pressed_keys.contains(&Key::A)) {
[INFO] [stdout] 161 +     if user_input.pressed_keys.contains(&Key::A)  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:163:15
[INFO] [stdout]     |
[INFO] [stdout] 163 |     } else if (user_input.pressed_keys.contains(&Key::D)) {
[INFO] [stdout]     |               ^                                         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 163 -     } else if (user_input.pressed_keys.contains(&Key::D)) {
[INFO] [stdout] 163 +     } else if user_input.pressed_keys.contains(&Key::D)  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `normal3f_to_rgb8` and `rgb8_to_vector3f`
[INFO] [stdout]  --> src/renderer/renderer.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::types::{normal3f_to_rgb8, vector3f_to_rgb8, rgb8_to_vector3f};
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `scale_rgb8`
[INFO] [stdout]  --> src/renderer/renderer.rs:6:54
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::types::{Rgb8, Size2i, Vector2i, Vector3f, scale_rgb8, PointwiseSqrtExt };
[INFO] [stdout]   |                                                      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/renderer/renderer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `clone_trait_object`
[INFO] [stdout]  --> src/material/material.rs:5:17
[INFO] [stdout]   |
[INFO] [stdout] 5 | use dyn_clone::{clone_trait_object, DynClone};
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:161:7
[INFO] [stdout]     |
[INFO] [stdout] 161 |     if(user_input.pressed_keys.contains(&Key::A)) {
[INFO] [stdout]     |       ^                                         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 161 -     if(user_input.pressed_keys.contains(&Key::A)) {
[INFO] [stdout] 161 +     if user_input.pressed_keys.contains(&Key::A)  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:163:15
[INFO] [stdout]     |
[INFO] [stdout] 163 |     } else if (user_input.pressed_keys.contains(&Key::D)) {
[INFO] [stdout]     |               ^                                         ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 163 -     } else if (user_input.pressed_keys.contains(&Key::D)) {
[INFO] [stdout] 163 +     } else if user_input.pressed_keys.contains(&Key::D)  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_max`
[INFO] [stdout]   --> src/geom/sphere.rs:14:58
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn hit_sphere(sphere: &Sphere, ray: &Ray, t_min:f32, t_max:f32) -> Option<HitPoint> {
[INFO] [stdout]    |                                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_t_max`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `image_size`
[INFO] [stdout]   --> src/image/image.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let image_size = self.size.height() * self.size.width();
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_image_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ray`
[INFO] [stdout]   --> src/material/material.rs:28:29
[INFO] [stdout]    |
[INFO] [stdout] 28 |         fn scatter  (&self, ray: &Ray, rec: &HitPoint)-> Option<(Vector3f, Ray)> {
[INFO] [stdout]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_ray`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `running` is never read
[INFO] [stdout]   --> src/main.rs:89:21
[INFO] [stdout]    |
[INFO] [stdout] 89 |                     running = false;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game_conf`
[INFO] [stdout]   --> src/main.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |         game_conf: GameConf,
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_game_conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/main.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |             Err(e) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:172:9
[INFO] [stdout]     |
[INFO] [stdout] 172 |     let mut wasd_vector = make_wasd_vector(user_input);
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ArcMutex` is never used
[INFO] [stdout]   --> src/main.rs:57:6
[INFO] [stdout]    |
[INFO] [stdout] 57 | type ArcMutex<T> = std::sync::Arc<std::sync::Mutex<T>>;
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_arc_mutex` is never used
[INFO] [stdout]   --> src/main.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn make_arc_mutex<T>(value: T) -> ArcMutex<T>{
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `camera_size` is never read
[INFO] [stdout]    --> src/main.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 109 | struct GameConf{
[INFO] [stdout]     |        -------- field in this struct
[INFO] [stdout] 110 |     camera_size: Vector2i
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:271:12
[INFO] [stdout]     |
[INFO] [stdout] 270 | impl GameState {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 271 |     pub fn new(camera: Camera) -> GameState {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `scale_rgb8` is never used
[INFO] [stdout]   --> src/types/mod.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn scale_rgb8(color: Rgb8, scale: f32) -> Rgb8 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rgb8_to_vector3f` is never used
[INFO] [stdout]   --> src/types/mod.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn rgb8_to_vector3f(rgb: Rgb8) -> Vector3f {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `normal3f_to_rgb8` is never used
[INFO] [stdout]   --> src/types/mod.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn normal3f_to_rgb8(v: Vector3f) -> Rgb8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:101:13
[INFO] [stdout]     |
[INFO] [stdout] 101 |             renderer_framebuffer_tx.send(image_buffer_rgba);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 101 |             let _ = renderer_framebuffer_tx.send(image_buffer_rgba);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:208:13
[INFO] [stdout]     |
[INFO] [stdout] 208 |             user_input_tx.send(user_input);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 208 |             let _ = user_input_tx.send(user_input);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_max`
[INFO] [stdout]   --> src/geom/sphere.rs:14:58
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn hit_sphere(sphere: &Sphere, ray: &Ray, t_min:f32, t_max:f32) -> Option<HitPoint> {
[INFO] [stdout]    |                                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_t_max`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `image_size`
[INFO] [stdout]   --> src/image/image.rs:32:13
[INFO] [stdout]    |
[INFO] [stdout] 32 |         let image_size = self.size.height() * self.size.width();
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_image_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ray`
[INFO] [stdout]   --> src/material/material.rs:28:29
[INFO] [stdout]    |
[INFO] [stdout] 28 |         fn scatter  (&self, ray: &Ray, rec: &HitPoint)-> Option<(Vector3f, Ray)> {
[INFO] [stdout]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_ray`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `running` is never read
[INFO] [stdout]   --> src/main.rs:89:21
[INFO] [stdout]    |
[INFO] [stdout] 89 |                     running = false;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `game_conf`
[INFO] [stdout]   --> src/main.rs:79:9
[INFO] [stdout]    |
[INFO] [stdout] 79 |         game_conf: GameConf,
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_game_conf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]    --> src/main.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |             Err(e) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:172:9
[INFO] [stdout]     |
[INFO] [stdout] 172 |     let mut wasd_vector = make_wasd_vector(user_input);
[INFO] [stdout]     |         ----^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ArcMutex` is never used
[INFO] [stdout]   --> src/main.rs:57:6
[INFO] [stdout]    |
[INFO] [stdout] 57 | type ArcMutex<T> = std::sync::Arc<std::sync::Mutex<T>>;
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_arc_mutex` is never used
[INFO] [stdout]   --> src/main.rs:59:4
[INFO] [stdout]    |
[INFO] [stdout] 59 | fn make_arc_mutex<T>(value: T) -> ArcMutex<T>{
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `camera_size` is never read
[INFO] [stdout]    --> src/main.rs:110:5
[INFO] [stdout]     |
[INFO] [stdout] 109 | struct GameConf{
[INFO] [stdout]     |        -------- field in this struct
[INFO] [stdout] 110 |     camera_size: Vector2i
[INFO] [stdout]     |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:271:12
[INFO] [stdout]     |
[INFO] [stdout] 270 | impl GameState {
[INFO] [stdout]     | -------------- associated function in this implementation
[INFO] [stdout] 271 |     pub fn new(camera: Camera) -> GameState {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `scale_rgb8` is never used
[INFO] [stdout]   --> src/types/mod.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn scale_rgb8(color: Rgb8, scale: f32) -> Rgb8 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `rgb8_to_vector3f` is never used
[INFO] [stdout]   --> src/types/mod.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub fn rgb8_to_vector3f(rgb: Rgb8) -> Vector3f {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `normal3f_to_rgb8` is never used
[INFO] [stdout]   --> src/types/mod.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn normal3f_to_rgb8(v: Vector3f) -> Rgb8 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:101:13
[INFO] [stdout]     |
[INFO] [stdout] 101 |             renderer_framebuffer_tx.send(image_buffer_rgba);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 101 |             let _ = renderer_framebuffer_tx.send(image_buffer_rgba);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:208:13
[INFO] [stdout]     |
[INFO] [stdout] 208 |             user_input_tx.send(user_input);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 208 |             let _ = user_input_tx.send(user_input);
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 43.05s
[INFO] running `Command { std: "docker" "inspect" "d51f93f982f4673d591c581174bc445cc23c19cf3c6c79d736548dc24b249c64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d51f93f982f4673d591c581174bc445cc23c19cf3c6c79d736548dc24b249c64", kill_on_drop: false }`
[INFO] [stdout] d51f93f982f4673d591c581174bc445cc23c19cf3c6c79d736548dc24b249c64
