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[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |             March::sdf(Vec3::new(p.x + EPSILON, p.y, p.z), march).0 - March::sdf(Vec3::new(p.x - EPSILON, p.y, p.z), march).0,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 35 |             <dyn March>::sdf(Vec3::new(p.x + EPSILON, p.y, p.z), march).0 - March::sdf(Vec3::new(p.x - EPSILON, p.y, p.z), march).0,
[INFO] [stdout]    |             ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:35:71
[INFO] [stdout]    |
[INFO] [stdout] 35 |             March::sdf(Vec3::new(p.x + EPSILON, p.y, p.z), march).0 - March::sdf(Vec3::new(p.x - EPSILON, p.y, p.z), march).0,
[INFO] [stdout]    |                                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 35 |             March::sdf(Vec3::new(p.x + EPSILON, p.y, p.z), march).0 - <dyn March>::sdf(Vec3::new(p.x - EPSILON, p.y, p.z), march).0,
[INFO] [stdout]    |                                                                       ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |             March::sdf(Vec3::new(p.x, p.y + EPSILON, p.z), march).0 - March::sdf(Vec3::new(p.x, p.y - EPSILON, p.z), march).0,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |             <dyn March>::sdf(Vec3::new(p.x, p.y + EPSILON, p.z), march).0 - March::sdf(Vec3::new(p.x, p.y - EPSILON, p.z), march).0,
[INFO] [stdout]    |             ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:36:71
[INFO] [stdout]    |
[INFO] [stdout] 36 |             March::sdf(Vec3::new(p.x, p.y + EPSILON, p.z), march).0 - March::sdf(Vec3::new(p.x, p.y - EPSILON, p.z), march).0,
[INFO] [stdout]    |                                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |             March::sdf(Vec3::new(p.x, p.y + EPSILON, p.z), march).0 - <dyn March>::sdf(Vec3::new(p.x, p.y - EPSILON, p.z), march).0,
[INFO] [stdout]    |                                                                       ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |             March::sdf(Vec3::new(p.x, p.y, p.z + EPSILON), march).0 - March::sdf(Vec3::new(p.x, p.y, p.z - EPSILON), march).0,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 37 |             <dyn March>::sdf(Vec3::new(p.x, p.y, p.z + EPSILON), march).0 - March::sdf(Vec3::new(p.x, p.y, p.z - EPSILON), march).0,
[INFO] [stdout]    |             ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:37:71
[INFO] [stdout]    |
[INFO] [stdout] 37 |             March::sdf(Vec3::new(p.x, p.y, p.z + EPSILON), march).0 - March::sdf(Vec3::new(p.x, p.y, p.z - EPSILON), march).0,
[INFO] [stdout]    |                                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 37 |             March::sdf(Vec3::new(p.x, p.y, p.z + EPSILON), march).0 - <dyn March>::sdf(Vec3::new(p.x, p.y, p.z - EPSILON), march).0,
[INFO] [stdout]    |                                                                       ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:46:40
[INFO] [stdout]    |
[INFO] [stdout] 46 |             let (distance, material) = March::sdf(point, march);
[INFO] [stdout]    |                                        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 46 |             let (distance, material) = <dyn March>::sdf(point, march);
[INFO] [stdout]    |                                        ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:49:30
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 let normal = March::normal(point, march);
[INFO] [stdout]    |                              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 let normal = <dyn March>::normal(point, march);
[INFO] [stdout]    |                              ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/render.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let march = March::hit(&scene.march, ray);
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let march = <dyn March>::hit(&scene.march, ray);
[INFO] [stdout]    |                 ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/render.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let trace = Trace::hit(&scene.trace, ray);
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let trace = <dyn Trace>::hit(&scene.trace, ray);
[INFO] [stdout]    |                 ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `through` is never used
[INFO] [stdout]   --> src/structures/ray.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Ray {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn through(origin: Vec3, to: Vec3) -> Ray {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Triangle` is never constructed
[INFO] [stdout]  --> src/objects/triangle.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Triangle {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/objects/triangle.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Triangle {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 17 |     pub fn new(a: Vec3, b: Vec3, c: Vec3, material: Material) -> Triangle {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `refract` is never used
[INFO] [stdout]   --> src/render.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn refract(v: &Vec3, n: &Vec3, ni_over_nt: f64, refracted: &mut Vec3) -> bool {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `specular` is never used
[INFO] [stdout]   --> src/demo.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn specular() -> (Scene, Camera) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `triangle` is never used
[INFO] [stdout]   --> src/demo.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn triangle() -> (Scene, Camera) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `materials` is never used
[INFO] [stdout]    --> src/demo.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub fn materials() -> (Scene, Camera) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |             March::sdf(Vec3::new(p.x + EPSILON, p.y, p.z), march).0 - March::sdf(Vec3::new(p.x - EPSILON, p.y, p.z), march).0,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 35 |             <dyn March>::sdf(Vec3::new(p.x + EPSILON, p.y, p.z), march).0 - March::sdf(Vec3::new(p.x - EPSILON, p.y, p.z), march).0,
[INFO] [stdout]    |             ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:35:71
[INFO] [stdout]    |
[INFO] [stdout] 35 |             March::sdf(Vec3::new(p.x + EPSILON, p.y, p.z), march).0 - March::sdf(Vec3::new(p.x - EPSILON, p.y, p.z), march).0,
[INFO] [stdout]    |                                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 35 |             March::sdf(Vec3::new(p.x + EPSILON, p.y, p.z), march).0 - <dyn March>::sdf(Vec3::new(p.x - EPSILON, p.y, p.z), march).0,
[INFO] [stdout]    |                                                                       ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |             March::sdf(Vec3::new(p.x, p.y + EPSILON, p.z), march).0 - March::sdf(Vec3::new(p.x, p.y - EPSILON, p.z), march).0,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |             <dyn March>::sdf(Vec3::new(p.x, p.y + EPSILON, p.z), march).0 - March::sdf(Vec3::new(p.x, p.y - EPSILON, p.z), march).0,
[INFO] [stdout]    |             ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:36:71
[INFO] [stdout]    |
[INFO] [stdout] 36 |             March::sdf(Vec3::new(p.x, p.y + EPSILON, p.z), march).0 - March::sdf(Vec3::new(p.x, p.y - EPSILON, p.z), march).0,
[INFO] [stdout]    |                                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 36 |             March::sdf(Vec3::new(p.x, p.y + EPSILON, p.z), march).0 - <dyn March>::sdf(Vec3::new(p.x, p.y - EPSILON, p.z), march).0,
[INFO] [stdout]    |                                                                       ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |             March::sdf(Vec3::new(p.x, p.y, p.z + EPSILON), march).0 - March::sdf(Vec3::new(p.x, p.y, p.z - EPSILON), march).0,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 37 |             <dyn March>::sdf(Vec3::new(p.x, p.y, p.z + EPSILON), march).0 - March::sdf(Vec3::new(p.x, p.y, p.z - EPSILON), march).0,
[INFO] [stdout]    |             ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:37:71
[INFO] [stdout]    |
[INFO] [stdout] 37 |             March::sdf(Vec3::new(p.x, p.y, p.z + EPSILON), march).0 - March::sdf(Vec3::new(p.x, p.y, p.z - EPSILON), march).0,
[INFO] [stdout]    |                                                                       ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 37 |             March::sdf(Vec3::new(p.x, p.y, p.z + EPSILON), march).0 - <dyn March>::sdf(Vec3::new(p.x, p.y, p.z - EPSILON), march).0,
[INFO] [stdout]    |                                                                       ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:46:40
[INFO] [stdout]    |
[INFO] [stdout] 46 |             let (distance, material) = March::sdf(point, march);
[INFO] [stdout]    |                                        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 46 |             let (distance, material) = <dyn March>::sdf(point, march);
[INFO] [stdout]    |                                        ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/objects/march.rs:49:30
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 let normal = March::normal(point, march);
[INFO] [stdout]    |                              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 let normal = <dyn March>::normal(point, march);
[INFO] [stdout]    |                              ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/render.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let march = March::hit(&scene.march, ray);
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let march = <dyn March>::hit(&scene.march, ray);
[INFO] [stdout]    |                 ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/render.rs:17:17
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let trace = Trace::hit(&scene.trace, ray);
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let trace = <dyn Trace>::hit(&scene.trace, ray);
[INFO] [stdout]    |                 ++++      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `through` is never used
[INFO] [stdout]   --> src/structures/ray.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Ray {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn through(origin: Vec3, to: Vec3) -> Ray {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Triangle` is never constructed
[INFO] [stdout]  --> src/objects/triangle.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Triangle {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/objects/triangle.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl Triangle {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 17 |     pub fn new(a: Vec3, b: Vec3, c: Vec3, material: Material) -> Triangle {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `refract` is never used
[INFO] [stdout]   --> src/render.rs:61:4
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn refract(v: &Vec3, n: &Vec3, ni_over_nt: f64, refracted: &mut Vec3) -> bool {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `specular` is never used
[INFO] [stdout]   --> src/demo.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn specular() -> (Scene, Camera) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `triangle` is never used
[INFO] [stdout]   --> src/demo.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | pub fn triangle() -> (Scene, Camera) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `materials` is never used
[INFO] [stdout]    --> src/demo.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 | pub fn materials() -> (Scene, Camera) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.91s
[INFO] running `Command { std: "docker" "inspect" "bd720b22d77cbf0245bbaceb6ba973c425fd16102dd61c7caacfa84da1fc5f3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd720b22d77cbf0245bbaceb6ba973c425fd16102dd61c7caacfa84da1fc5f3f", kill_on_drop: false }`
[INFO] [stdout] bd720b22d77cbf0245bbaceb6ba973c425fd16102dd61c7caacfa84da1fc5f3f
