[INFO] cloning repository https://github.com/TomChiavegato/ray_tracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TomChiavegato/ray_tracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTomChiavegato%2Fray_tracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTomChiavegato%2Fray_tracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7fb5adc0e35b15f1926d712ef5241e2017794967
[INFO] linting TomChiavegato/ray_tracer against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTomChiavegato%2Fray_tracer" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/TomChiavegato/ray_tracer
[INFO] finished tweaking git repo https://github.com/TomChiavegato/ray_tracer
[INFO] tweaked toml for git repo https://github.com/TomChiavegato/ray_tracer written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TomChiavegato/ray_tracer on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TomChiavegato/ray_tracer 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" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cast_trait v0.1.2
[INFO] [stderr]   Downloaded vec3 v0.2.1
[INFO] [stderr]   Downloaded indicatif v0.17.6
[INFO] [stderr]   Downloaded portable-atomic v1.4.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "fa150866a5e6f916571eb8a1e996cf9a050133b9e4242da012319b3af39e7f3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa150866a5e6f916571eb8a1e996cf9a050133b9e4242da012319b3af39e7f3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa150866a5e6f916571eb8a1e996cf9a050133b9e4242da012319b3af39e7f3e", kill_on_drop: false }`
[INFO] [stdout] fa150866a5e6f916571eb8a1e996cf9a050133b9e4242da012319b3af39e7f3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a03a92e3ab0bb10f56bbda9c1eb9800a87e9d82dbf0151f54d0e62e82fb71804
[INFO] running `Command { std: "docker" "start" "-a" "a03a92e3ab0bb10f56bbda9c1eb9800a87e9d82dbf0151f54d0e62e82fb71804", kill_on_drop: false }`
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]    Compiling portable-atomic v1.4.3
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking cast_trait v0.1.2
[INFO] [stderr]     Checking glam v0.24.1
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking console v0.15.7
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking vec3 v0.2.1
[INFO] [stderr]     Checking indicatif v0.17.6
[INFO] [stderr]     Checking ray_tracing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `clear` and `add` are never used
[INFO] [stdout]    --> src/main.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 145 | impl HittableList{
[INFO] [stdout]     | ----------------- methods in this implementation
[INFO] [stdout] 146 |     fn clear(&mut self){
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 150 |     fn add<T>(&mut self, object: T) where T: Hittable + Sync + 'static,{
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `max_value` and `aspect_ratio` are never read
[INFO] [stdout]    --> src/main.rs:325:5
[INFO] [stdout]     |
[INFO] [stdout] 322 | struct Camera{
[INFO] [stdout]     |        ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 325 |     max_value: u8,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 326 |     aspect_ratio: f64,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/main.rs:111:12
[INFO] [stdout]     |
[INFO] [stdout] 111 |         if !hit.is_none(){
[INFO] [stdout]     |            ^^^^^^^^^^^^^^ help: try: `hit.is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `unwrap` on `hit` after checking its variant with `is_none`
[INFO] [stdout]    --> src/main.rs:112:30
[INFO] [stdout]     |
[INFO] [stdout] 111 |         if !hit.is_none(){
[INFO] [stdout]     |             ------------- the check is happening here
[INFO] [stdout] 112 |             let hit_record = hit.unwrap();
[INFO] [stdout]     |                              ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: try using `match`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_unwrap
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_unwrap)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         return (1.0 - a) * DVec3::new(1.0, 1.0, 1.0) + a * DVec3::new(0.5, 0.7, 1.0);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]     = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 123 -         return (1.0 - a) * DVec3::new(1.0, 1.0, 1.0) + a * DVec3::new(0.5, 0.7, 1.0);
[INFO] [stdout] 123 +         (1.0 - a) * DVec3::new(1.0, 1.0, 1.0) + a * DVec3::new(0.5, 0.7, 1.0)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/main.rs:109:29
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let hit = world.hit(&self, &((0.001)..f64::INFINITY));
[INFO] [stdout]     |                             ^^^^^ help: change this to: `self`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]     = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: parameter is only used in recursion
[INFO] [stdout]    --> src/main.rs:105:36
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn color<T>(&self, world: &T,  background_color: &DVec3, depth: u8) -> DVec3
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_background_color`
[INFO] [stdout]     |
[INFO] [stdout] note: parameter used here
[INFO] [stdout]    --> src/main.rs:117:58
[INFO] [stdout]     |
[INFO] [stdout] 117 |                 return *attenuation*new_ray.color(world, background_color, depth-1);
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#only_used_in_recursion
[INFO] [stdout]     = note: `#[warn(clippy::only_used_in_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/main.rs:171:16
[INFO] [stdout]     |
[INFO] [stdout] 171 |             if !hit.is_none() {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^ help: try: `hit.is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `unwrap` on `hit` after checking its variant with `is_none`
[INFO] [stdout]    --> src/main.rs:172:30
[INFO] [stdout]     |
[INFO] [stdout] 171 |             if !hit.is_none() {
[INFO] [stdout]     |                 ------------- the check is happening here
[INFO] [stdout] 172 |                 let record = hit.unwrap();
[INFO] [stdout]     |                              ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: try using `match`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_unwrap
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |         return Some(closest_so_far);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 185 -         return Some(closest_so_far);
[INFO] [stdout] 185 +         Some(closest_so_far)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `clear` and `add` are never used
[INFO] [stdout]    --> src/main.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 145 | impl HittableList{
[INFO] [stdout]     | ----------------- methods in this implementation
[INFO] [stdout] 146 |     fn clear(&mut self){
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 150 |     fn add<T>(&mut self, object: T) where T: Hittable + Sync + 'static,{
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `max_value` and `aspect_ratio` are never read
[INFO] [stdout]    --> src/main.rs:325:5
[INFO] [stdout]     |
[INFO] [stdout] 322 | struct Camera{
[INFO] [stdout]     |        ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 325 |     max_value: u8,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 326 |     aspect_ratio: f64,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:234:9
[INFO] [stdout]     |
[INFO] [stdout] 234 | /         return Some(HitRecord{
[INFO] [stdout] 235 | |             t,
[INFO] [stdout] 236 | |             p,
[INFO] [stdout] 237 | |             normal,
[INFO] [stdout] ...   |
[INFO] [stdout] 240 | |             front_face,
[INFO] [stdout] 241 | |         });
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 234 ~         Some(HitRecord{
[INFO] [stdout] 235 +             t,
[INFO] [stdout] 236 +             p,
[INFO] [stdout] 237 +             normal,
[INFO] [stdout] 238 +             incident_dir: r.direction,
[INFO] [stdout] 239 +             material: self.material.clone(),
[INFO] [stdout] 240 +             front_face,
[INFO] [stdout] 241 ~         })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:314:9
[INFO] [stdout]     |
[INFO] [stdout] 314 |         return Some(closest_so_far);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 314 -         return Some(closest_so_far);
[INFO] [stdout] 314 +         Some(closest_so_far)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/main.rs:111:12
[INFO] [stdout]     |
[INFO] [stdout] 111 |         if !hit.is_none(){
[INFO] [stdout]     |            ^^^^^^^^^^^^^^ help: try: `hit.is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `unwrap` on `hit` after checking its variant with `is_none`
[INFO] [stdout]    --> src/main.rs:112:30
[INFO] [stdout]     |
[INFO] [stdout] 111 |         if !hit.is_none(){
[INFO] [stdout]     |             ------------- the check is happening here
[INFO] [stdout] 112 |             let hit_record = hit.unwrap();
[INFO] [stdout]     |                              ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: try using `match`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_unwrap
[INFO] [stdout]     = note: `#[warn(clippy::unnecessary_unwrap)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         return (1.0 - a) * DVec3::new(1.0, 1.0, 1.0) + a * DVec3::new(0.5, 0.7, 1.0);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]     = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 123 -         return (1.0 - a) * DVec3::new(1.0, 1.0, 1.0) + a * DVec3::new(0.5, 0.7, 1.0);
[INFO] [stdout] 123 +         (1.0 - a) * DVec3::new(1.0, 1.0, 1.0) + a * DVec3::new(0.5, 0.7, 1.0)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]    --> src/main.rs:109:29
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let hit = world.hit(&self, &((0.001)..f64::INFINITY));
[INFO] [stdout]     |                             ^^^^^ help: change this to: `self`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]     = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: parameter is only used in recursion
[INFO] [stdout]    --> src/main.rs:105:36
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn color<T>(&self, world: &T,  background_color: &DVec3, depth: u8) -> DVec3
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_background_color`
[INFO] [stdout]     |
[INFO] [stdout] note: parameter used here
[INFO] [stdout]    --> src/main.rs:117:58
[INFO] [stdout]     |
[INFO] [stdout] 117 |                 return *attenuation*new_ray.color(world, background_color, depth-1);
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#only_used_in_recursion
[INFO] [stdout]     = note: `#[warn(clippy::only_used_in_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:319:5
[INFO] [stdout]     |
[INFO] [stdout] 319 |     return (normal.dot(p)-normal.dot(q))/normal.dot(m);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 319 -     return (normal.dot(p)-normal.dot(q))/normal.dot(m);
[INFO] [stdout] 319 +     (normal.dot(p)-normal.dot(q))/normal.dot(m)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:363:9
[INFO] [stdout]     |
[INFO] [stdout] 363 | /         return Camera{
[INFO] [stdout] 364 | |             image_width,
[INFO] [stdout] 365 | |             image_height,
[INFO] [stdout] 366 | |             max_value,
[INFO] [stdout] ...   |
[INFO] [stdout] 374 | |             max_depth: 10,
[INFO] [stdout] 375 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 363 ~         Camera{
[INFO] [stdout] 364 +             image_width,
[INFO] [stdout] 365 +             image_height,
[INFO] [stdout] 366 +             max_value,
[INFO] [stdout] 367 +             aspect_ratio,
[INFO] [stdout] 368 +             center: camera_center,
[INFO] [stdout] 369 +             pixel_delta_u,
[INFO] [stdout] 370 +             pixel_delta_v,
[INFO] [stdout] 371 +             pixel00_loc,
[INFO] [stdout] 372 +             samples_per_pixel: 64,
[INFO] [stdout] 373 +             background_color: DVec3::new(0.5, 0.7, 1.0),
[INFO] [stdout] 374 +             max_depth: 10,
[INFO] [stdout] 375 +         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:395:9
[INFO] [stdout]     |
[INFO] [stdout] 395 |         return Ray { origin: self.center, direction: ray_direction };
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 395 -         return Ray { origin: self.center, direction: ray_direction };
[INFO] [stdout] 395 +         Ray { origin: self.center, direction: ray_direction }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/main.rs:171:16
[INFO] [stdout]     |
[INFO] [stdout] 171 |             if !hit.is_none() {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^ help: try: `hit.is_some()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `unwrap` on `hit` after checking its variant with `is_none`
[INFO] [stdout]    --> src/main.rs:172:30
[INFO] [stdout]     |
[INFO] [stdout] 171 |             if !hit.is_none() {
[INFO] [stdout]     |                 ------------- the check is happening here
[INFO] [stdout] 172 |                 let record = hit.unwrap();
[INFO] [stdout]     |                              ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: try using `match`
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_unwrap
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |         return Some(closest_so_far);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 185 -         return Some(closest_so_far);
[INFO] [stdout] 185 +         Some(closest_so_far)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:234:9
[INFO] [stdout]     |
[INFO] [stdout] 234 | /         return Some(HitRecord{
[INFO] [stdout] 235 | |             t,
[INFO] [stdout] 236 | |             p,
[INFO] [stdout] 237 | |             normal,
[INFO] [stdout] ...   |
[INFO] [stdout] 240 | |             front_face,
[INFO] [stdout] 241 | |         });
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 234 ~         Some(HitRecord{
[INFO] [stdout] 235 +             t,
[INFO] [stdout] 236 +             p,
[INFO] [stdout] 237 +             normal,
[INFO] [stdout] 238 +             incident_dir: r.direction,
[INFO] [stdout] 239 +             material: self.material.clone(),
[INFO] [stdout] 240 +             front_face,
[INFO] [stdout] 241 ~         })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:314:9
[INFO] [stdout]     |
[INFO] [stdout] 314 |         return Some(closest_so_far);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 314 -         return Some(closest_so_far);
[INFO] [stdout] 314 +         Some(closest_so_far)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::ops::Range<u8>`
[INFO] [stdout]    --> src/main.rs:424:48
[INFO] [stdout]     |
[INFO] [stdout] 424 |                 let multisampled_pixel_color = (0..(self.samples_per_pixel)).into_iter().map(|_| {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `(0..(self.samples_per_pixel))`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout]     = note: `#[warn(clippy::useless_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:467:5
[INFO] [stdout]     |
[INFO] [stdout] 467 |     return -1.*rand_vec;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 467 -     return -1.*rand_vec;
[INFO] [stdout] 467 +     -1.*rand_vec
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:489:17
[INFO] [stdout]     |
[INFO] [stdout] 489 |                 return Some((new_ray, attenuation));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 489 -                 return Some((new_ray, attenuation));
[INFO] [stdout] 489 +                 Some((new_ray, attenuation))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:500:17
[INFO] [stdout]     |
[INFO] [stdout] 500 |                 return Some((new_ray, attenuation));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 500 -                 return Some((new_ray, attenuation));
[INFO] [stdout] 500 +                 Some((new_ray, attenuation))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:319:5
[INFO] [stdout]     |
[INFO] [stdout] 319 |     return (normal.dot(p)-normal.dot(q))/normal.dot(m);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 319 -     return (normal.dot(p)-normal.dot(q))/normal.dot(m);
[INFO] [stdout] 319 +     (normal.dot(p)-normal.dot(q))/normal.dot(m)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:363:9
[INFO] [stdout]     |
[INFO] [stdout] 363 | /         return Camera{
[INFO] [stdout] 364 | |             image_width,
[INFO] [stdout] 365 | |             image_height,
[INFO] [stdout] 366 | |             max_value,
[INFO] [stdout] ...   |
[INFO] [stdout] 374 | |             max_depth: 10,
[INFO] [stdout] 375 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 363 ~         Camera{
[INFO] [stdout] 364 +             image_width,
[INFO] [stdout] 365 +             image_height,
[INFO] [stdout] 366 +             max_value,
[INFO] [stdout] 367 +             aspect_ratio,
[INFO] [stdout] 368 +             center: camera_center,
[INFO] [stdout] 369 +             pixel_delta_u,
[INFO] [stdout] 370 +             pixel_delta_v,
[INFO] [stdout] 371 +             pixel00_loc,
[INFO] [stdout] 372 +             samples_per_pixel: 64,
[INFO] [stdout] 373 +             background_color: DVec3::new(0.5, 0.7, 1.0),
[INFO] [stdout] 374 +             max_depth: 10,
[INFO] [stdout] 375 +         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:395:9
[INFO] [stdout]     |
[INFO] [stdout] 395 |         return Ray { origin: self.center, direction: ray_direction };
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 395 -         return Ray { origin: self.center, direction: ray_direction };
[INFO] [stdout] 395 +         Ray { origin: self.center, direction: ray_direction }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded late initialization
[INFO] [stdout]    --> src/main.rs:504:17
[INFO] [stdout]     |
[INFO] [stdout] 504 |                 let refraction_ratio: f64;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
[INFO] [stdout]     = note: `#[warn(clippy::needless_late_init)]` on by default
[INFO] [stdout] help: move the declaration `refraction_ratio` here and remove the assignments from the branches
[INFO] [stdout]     |
[INFO] [stdout] 504 ~                 
[INFO] [stdout] 505 ~                 let refraction_ratio: f64 = if hit_record.front_face {    1.0/index_of_refraction  }
[INFO] [stdout] 506 ~                 else { *index_of_refraction };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded late initialization
[INFO] [stdout]    --> src/main.rs:515:17
[INFO] [stdout]     |
[INFO] [stdout] 515 |                 let direction;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
[INFO] [stdout] help: move the declaration `direction` here and remove the assignments from the branches
[INFO] [stdout]     |
[INFO] [stdout] 515 ~                 
[INFO] [stdout] 516 |
[INFO] [stdout] 517 |                 let mut rng = rand::thread_rng();
[INFO] [stdout] 518 |
[INFO] [stdout] 519 ~                 let direction = if cannot_refract || reflectance(cos_theta, refraction_ratio) > rng.gen::<f64>() {
[INFO] [stdout] 520 |                     //reflect
[INFO] [stdout] 521 ~                     reflect(r_incoming, normal, &0.0)
[INFO] [stdout] 522 |                 }else{
[INFO] [stdout] 523 |                     //can refract
[INFO] [stdout] 524 ~                     refract(r_incoming, normal, refraction_ratio)
[INFO] [stdout] 525 ~                 };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:543:5
[INFO] [stdout]     |
[INFO] [stdout] 543 |     return r0 + (1.0-r0)*(1.0-cosine).powi(5);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 543 -     return r0 + (1.0-r0)*(1.0-cosine).powi(5);
[INFO] [stdout] 543 +     r0 + (1.0-r0)*(1.0-cosine).powi(5)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:547:5
[INFO] [stdout]     |
[INFO] [stdout] 547 |     return (n1.sqrt()*255.0, n2.sqrt()*255.0, n3.sqrt()*255.0);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 547 -     return (n1.sqrt()*255.0, n2.sqrt()*255.0, n3.sqrt()*255.0);
[INFO] [stdout] 547 +     (n1.sqrt()*255.0, n2.sqrt()*255.0, n3.sqrt()*255.0)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:569:5
[INFO] [stdout]     |
[INFO] [stdout] 569 |     return r_prime_perpendicular + r_prime_parallel;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 569 -     return r_prime_perpendicular + r_prime_parallel;
[INFO] [stdout] 569 +     r_prime_perpendicular + r_prime_parallel
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: useless conversion to the same type: `std::ops::Range<u8>`
[INFO] [stdout]    --> src/main.rs:424:48
[INFO] [stdout]     |
[INFO] [stdout] 424 |                 let multisampled_pixel_color = (0..(self.samples_per_pixel)).into_iter().map(|_| {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider removing `.into_iter()`: `(0..(self.samples_per_pixel))`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_conversion
[INFO] [stdout]     = note: `#[warn(clippy::useless_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:467:5
[INFO] [stdout]     |
[INFO] [stdout] 467 |     return -1.*rand_vec;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 467 -     return -1.*rand_vec;
[INFO] [stdout] 467 +     -1.*rand_vec
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:489:17
[INFO] [stdout]     |
[INFO] [stdout] 489 |                 return Some((new_ray, attenuation));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 489 -                 return Some((new_ray, attenuation));
[INFO] [stdout] 489 +                 Some((new_ray, attenuation))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:500:17
[INFO] [stdout]     |
[INFO] [stdout] 500 |                 return Some((new_ray, attenuation));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 500 -                 return Some((new_ray, attenuation));
[INFO] [stdout] 500 +                 Some((new_ray, attenuation))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded late initialization
[INFO] [stdout]    --> src/main.rs:504:17
[INFO] [stdout]     |
[INFO] [stdout] 504 |                 let refraction_ratio: f64;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
[INFO] [stdout]     = note: `#[warn(clippy::needless_late_init)]` on by default
[INFO] [stdout] help: move the declaration `refraction_ratio` here and remove the assignments from the branches
[INFO] [stdout]     |
[INFO] [stdout] 504 ~                 
[INFO] [stdout] 505 ~                 let refraction_ratio: f64 = if hit_record.front_face {    1.0/index_of_refraction  }
[INFO] [stdout] 506 ~                 else { *index_of_refraction };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded late initialization
[INFO] [stdout]    --> src/main.rs:515:17
[INFO] [stdout]     |
[INFO] [stdout] 515 |                 let direction;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
[INFO] [stdout] help: move the declaration `direction` here and remove the assignments from the branches
[INFO] [stdout]     |
[INFO] [stdout] 515 ~                 
[INFO] [stdout] 516 |
[INFO] [stdout] 517 |                 let mut rng = rand::thread_rng();
[INFO] [stdout] 518 |
[INFO] [stdout] 519 ~                 let direction = if cannot_refract || reflectance(cos_theta, refraction_ratio) > rng.gen::<f64>() {
[INFO] [stdout] 520 |                     //reflect
[INFO] [stdout] 521 ~                     reflect(r_incoming, normal, &0.0)
[INFO] [stdout] 522 |                 }else{
[INFO] [stdout] 523 |                     //can refract
[INFO] [stdout] 524 ~                     refract(r_incoming, normal, refraction_ratio)
[INFO] [stdout] 525 ~                 };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:543:5
[INFO] [stdout]     |
[INFO] [stdout] 543 |     return r0 + (1.0-r0)*(1.0-cosine).powi(5);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 543 -     return r0 + (1.0-r0)*(1.0-cosine).powi(5);
[INFO] [stdout] 543 +     r0 + (1.0-r0)*(1.0-cosine).powi(5)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:547:5
[INFO] [stdout]     |
[INFO] [stdout] 547 |     return (n1.sqrt()*255.0, n2.sqrt()*255.0, n3.sqrt()*255.0);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 547 -     return (n1.sqrt()*255.0, n2.sqrt()*255.0, n3.sqrt()*255.0);
[INFO] [stdout] 547 +     (n1.sqrt()*255.0, n2.sqrt()*255.0, n3.sqrt()*255.0)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]    --> src/main.rs:569:5
[INFO] [stdout]     |
[INFO] [stdout] 569 |     return r_prime_perpendicular + r_prime_parallel;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]     |
[INFO] [stdout] 569 -     return r_prime_perpendicular + r_prime_parallel;
[INFO] [stdout] 569 +     r_prime_perpendicular + r_prime_parallel
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.35s
[INFO] running `Command { std: "docker" "inspect" "a03a92e3ab0bb10f56bbda9c1eb9800a87e9d82dbf0151f54d0e62e82fb71804", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a03a92e3ab0bb10f56bbda9c1eb9800a87e9d82dbf0151f54d0e62e82fb71804", kill_on_drop: false }`
[INFO] [stdout] a03a92e3ab0bb10f56bbda9c1eb9800a87e9d82dbf0151f54d0e62e82fb71804