[INFO] cloning repository https://github.com/seenaburns/raytracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/seenaburns/raytracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseenaburns%2Fraytracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseenaburns%2Fraytracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7da8434a5151bdb590e0763b0fd62ab95fa05cda
[INFO] testing seenaburns/raytracer against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseenaburns%2Fraytracer" "/workspace/builds/worker-79/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-79/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/seenaburns/raytracer on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/seenaburns/raytracer
[INFO] finished tweaking git repo https://github.com/seenaburns/raytracer
[INFO] tweaked toml for git repo https://github.com/seenaburns/raytracer written to /workspace/builds/worker-79/source/Cargo.toml
[INFO] crate git repo https://github.com/seenaburns/raytracer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_syscall v0.1.29
[INFO] [stderr]   Downloaded image v0.14.0
[INFO] [stderr]   Downloaded png v0.8.0
[INFO] [stderr]   Downloaded deflate v0.7.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa52ef2a3e0d72ed28323d8665dc50d419d39f6e69817e4f150fafb0575006a8
[INFO] running `Command { std: "docker" "start" "-a" "aa52ef2a3e0d72ed28323d8665dc50d419d39f6e69817e4f150fafb0575006a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa52ef2a3e0d72ed28323d8665dc50d419d39f6e69817e4f150fafb0575006a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa52ef2a3e0d72ed28323d8665dc50d419d39f6e69817e4f150fafb0575006a8", kill_on_drop: false }`
[INFO] [stdout] aa52ef2a3e0d72ed28323d8665dc50d419d39f6e69817e4f150fafb0575006a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 653ac4aae249a25c00f8bfa61257121b3c0a1fd1f837fba498144e34f86d57c1
[INFO] running `Command { std: "docker" "start" "-a" "653ac4aae249a25c00f8bfa61257121b3c0a1fd1f837fba498144e34f86d57c1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.26
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]    Compiling scopeguard v0.3.2
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling futures v0.1.14
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling adler32 v1.0.0
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling inflate v0.2.0
[INFO] [stderr]    Compiling lzw v0.10.0
[INFO] [stderr]    Compiling color_quant v1.0.0
[INFO] [stderr]    Compiling scoped_threadpool v0.1.7
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling num_cpus v1.6.2
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling coco v0.1.1
[INFO] [stderr]    Compiling deflate v0.7.14
[INFO] [stderr]    Compiling num-integer v0.1.35
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling gif v0.9.2
[INFO] [stderr]    Compiling num-iter v0.1.34
[INFO] [stderr]    Compiling num-rational v0.1.39
[INFO] [stderr]    Compiling png v0.8.0
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling jpeg-decoder v0.1.13
[INFO] [stderr]    Compiling image v0.14.0
[INFO] [stderr]    Compiling raytracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:109:26
[INFO] [stdout]     |
[INFO] [stdout] 109 |     pub left: Option<Box<BVHItem>>,
[INFO] [stdout]     |                          ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 109 -     pub left: Option<Box<BVHItem>>,
[INFO] [stdout] 109 +     pub left: Option<Box<dyn BVHItem>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:110:27
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub right: Option<Box<BVHItem>>,
[INFO] [stdout]     |                           ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 110 -     pub right: Option<Box<BVHItem>>,
[INFO] [stdout] 110 +     pub right: Option<Box<dyn BVHItem>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/cube.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |     sides: Vec<Box<Hitable>>
[INFO] [stdout]    |                    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 -     sides: Vec<Box<Hitable>>
[INFO] [stdout] 11 +     sides: Vec<Box<dyn Hitable>>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:62:29
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl Renderable for Vec<Box<Renderable>> {
[INFO] [stdout]    |                             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 62 - impl Renderable for Vec<Box<Renderable>> {
[INFO] [stdout] 62 + impl Renderable for Vec<Box<dyn Renderable>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:14:75
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)>;
[INFO] [stdout]    |                                                                           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)>;
[INFO] [stdout] 14 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:48:75
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout]    |                                                                           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 48 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout] 48 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:63:75
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout]    |                                                                           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout] 63 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/render.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |     scene: Box<Renderable + Sync>,
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 40 -     scene: Box<Renderable + Sync>,
[INFO] [stdout] 40 +     scene: Box<dyn Renderable + Sync>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:114:53
[INFO] [stdout]     |
[INFO] [stdout] 114 | fn sample(x: i32, y: i32, nx: i32, ny: i32, scene: &Renderable, camera: &Camera, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout]     |                                                     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 114 - fn sample(x: i32, y: i32, nx: i32, ny: i32, scene: &Renderable, camera: &Camera, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout] 114 + fn sample(x: i32, y: i32, nx: i32, ny: i32, scene: &dyn Renderable, camera: &Camera, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:126:27
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn color(r: &Ray, world: &Renderable, depth: i32, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout]     |                           ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 126 - fn color(r: &Ray, world: &Renderable, depth: i32, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout] 126 + fn color(r: &Ray, world: &dyn Renderable, depth: i32, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:157:30
[INFO] [stdout]     |
[INFO] [stdout] 157 | pub fn random_scene() -> Box<Renderable + Sync> {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 157 - pub fn random_scene() -> Box<Renderable + Sync> {
[INFO] [stdout] 157 + pub fn random_scene() -> Box<dyn Renderable + Sync> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vec3.rs:38:26
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn map(self, f: &Fn(f64) -> f64) -> Vec3 {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 -     pub fn map(self, f: &Fn(f64) -> f64) -> Vec3 {
[INFO] [stdout] 38 +     pub fn map(self, f: &dyn Fn(f64) -> f64) -> Vec3 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vec3.rs:42:39
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn map2(a: Vec3, b: Vec3, f: &Fn(f64, f64) -> f64) -> Vec3 {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 42 -     pub fn map2(a: Vec3, b: Vec3, f: &Fn(f64, f64) -> f64) -> Vec3 {
[INFO] [stdout] 42 +     pub fn map2(a: Vec3, b: Vec3, f: &dyn Fn(f64, f64) -> f64) -> Vec3 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/bvh.rs:16:39
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn compare_by_axis(&self, other: &BoundingBox, axis: &Axis) -> Ordering {
[INFO] [stdout]    |                                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 -     fn compare_by_axis(&self, other: &BoundingBox, axis: &Axis) -> Ordering {
[INFO] [stdout] 16 +     fn compare_by_axis(&self, other: &dyn BoundingBox, axis: &Axis) -> Ordering {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:102:35
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn as_bounding_box(&self) -> &BoundingBox;
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 102 -     fn as_bounding_box(&self) -> &BoundingBox;
[INFO] [stdout] 102 +     fn as_bounding_box(&self) -> &dyn BoundingBox;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:105:35
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn as_bounding_box(&self) -> &BoundingBox { self }
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 105 -     fn as_bounding_box(&self) -> &BoundingBox { self }
[INFO] [stdout] 105 +     fn as_bounding_box(&self) -> &dyn BoundingBox { self }
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:115:38
[INFO] [stdout]     |
[INFO] [stdout] 115 |     pub fn new(mut hitables: Vec<Box<BVHItem>>) -> Node {
[INFO] [stdout]     |                                      ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 115 -     pub fn new(mut hitables: Vec<Box<BVHItem>>) -> Node {
[INFO] [stdout] 115 +     pub fn new(mut hitables: Vec<Box<dyn BVHItem>>) -> Node {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:158:75
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout]     |                                                                           ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 158 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout] 158 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/hitable.rs:21:26
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Hitable for Vec<Box<Hitable>> {
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 - impl Hitable for Vec<Box<Hitable>> {
[INFO] [stdout] 21 + impl Hitable for Vec<Box<dyn Hitable>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/shader/material.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Material {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 35 - impl Material {
[INFO] [stdout] 35 + impl dyn Material {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:118:35
[INFO] [stdout]     |
[INFO] [stdout] 118 |         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout]     |                                   ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 118 -         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout] 118 +         hitables.sort_by(|a: &Box<dyn BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:118:53
[INFO] [stdout]     |
[INFO] [stdout] 118 |         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout]     |                                                     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 118 -         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout] 118 +         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<dyn BVHItem>| {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/cube.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut sides: Vec<Box<Hitable>> = Vec::with_capacity(6);
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 -         let mut sides: Vec<Box<Hitable>> = Vec::with_capacity(6);
[INFO] [stdout] 23 +         let mut sides: Vec<Box<dyn Hitable>> = Vec::with_capacity(6);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:49:71
[INFO] [stdout]    |
[INFO] [stdout] 49 |         self.geometry.hit(r,t_min,t_max).map(|h| (h, &self.shader as &Material))
[INFO] [stdout]    |                                                                       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 49 -         self.geometry.hit(r,t_min,t_max).map(|h| (h, &self.shader as &Material))
[INFO] [stdout] 49 +         self.geometry.hit(r,t_min,t_max).map(|h| (h, &self.shader as &dyn Material))
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/shader/material.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         Material::lambertian(texture::constant_texture(albedo))
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 |         <dyn Material>::lambertian(texture::constant_texture(albedo))
[INFO] [stdout]    |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/shader/material.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         Material::diffuse_light(texture::constant_texture(emit))
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 61 |         <dyn Material>::diffuse_light(texture::constant_texture(emit))
[INFO] [stdout]    |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/shader/material.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Material::isotropic(texture::constant_texture(emit))
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 71 |         <dyn Material>::isotropic(texture::constant_texture(emit))
[INFO] [stdout]    |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/render.rs:50:34
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let shareable_scene: Arc<Box<Renderable>> = Arc::new(scene);
[INFO] [stdout]    |                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 50 -     let shareable_scene: Arc<Box<Renderable>> = Arc::new(scene);
[INFO] [stdout] 50 +     let shareable_scene: Arc<Box<dyn Renderable>> = Arc::new(scene);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:158:28
[INFO] [stdout]     |
[INFO] [stdout] 158 |     let mut items: Vec<Box<bvh::BVHItem>> = Vec::new();
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 158 -     let mut items: Vec<Box<bvh::BVHItem>> = Vec::new();
[INFO] [stdout] 158 +     let mut items: Vec<Box<dyn bvh::BVHItem>> = Vec::new();
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 166 |         Material::lambertian_constant(random::<Vec3>()),
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 166 |         <dyn Material>::lambertian_constant(random::<Vec3>()),
[INFO] [stdout]     |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:175:9
[INFO] [stdout]     |
[INFO] [stdout] 175 |         Material::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 175 |         <dyn Material>::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stdout]     |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:182:9
[INFO] [stdout]     |
[INFO] [stdout] 182 |         Material::metal((random::<Vec3>() + 1.0) * 0.5, random::<f64>() * 0.3),
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 182 |         <dyn Material>::metal((random::<Vec3>() + 1.0) * 0.5, random::<f64>() * 0.3),
[INFO] [stdout]     |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:189:9
[INFO] [stdout]     |
[INFO] [stdout] 189 |         Material::dielectric(1.5),
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 189 |         <dyn Material>::dielectric(1.5),
[INFO] [stdout]     |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:208:25
[INFO] [stdout]     |
[INFO] [stdout] 208 |                         Material::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 208 |                         <dyn Material>::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stdout]     |                         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:217:25
[INFO] [stdout]     |
[INFO] [stdout] 217 |                         Material::metal(
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 217 |                         <dyn Material>::metal(
[INFO] [stdout]     |                         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:230:25
[INFO] [stdout]     |
[INFO] [stdout] 230 |                         Material::dielectric(1.5),
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 230 |                         <dyn Material>::dielectric(1.5),
[INFO] [stdout]     |                         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]    --> src/shader/material.rs:123:49
[INFO] [stdout]     |
[INFO] [stdout] 123 |     fn scatter(&self, r: &Ray, hit: &HitRecord, rng: &mut XorShiftRng) -> Option<(Vec3, Ray)> {
[INFO] [stdout]     |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]    --> src/shader/material.rs:161:51
[INFO] [stdout]     |
[INFO] [stdout] 161 |     fn scatter(&self, _r: &Ray, _hit: &HitRecord, rng: &mut XorShiftRng) -> Option<(Vec3, Ray)> {
[INFO] [stdout]     |                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]    --> src/shader/material.rs:179:23
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn emitted(&self, u: f64, v: f64, p: &Vec3) -> Option<Vec3> {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/shader/material.rs:179:31
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn emitted(&self, u: f64, v: f64, p: &Vec3) -> Option<Vec3> {
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/shader/material.rs:179:39
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn emitted(&self, u: f64, v: f64, p: &Vec3) -> Option<Vec3> {
[INFO] [stdout]     |                                       ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/util.rs:14:14
[INFO] [stdout]    |
[INFO] [stdout] 14 |         AXIS.into_iter()
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 14 |         AXIS.iter()
[INFO] [stdout]    |              ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 14 |         IntoIterator::into_iter(AXIS)
[INFO] [stdout]    |         ++++++++++++++++++++++++    ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/render.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |             writeln!(&mut ::std::io::stderr(), "Thread {} done", nth);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 43 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hitable`
[INFO] [stdout]  --> src/main.rs:7:24
[INFO] [stdout]   |
[INFO] [stdout] 7 | use raytracer::model::{hitable, Renderable, Model};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `raytracer::model::sphere::Sphere`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use raytracer::model::sphere::Sphere;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `raytracer::model::constant_medium::ConstantMedium`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use raytracer::model::constant_medium::ConstantMedium;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `raytracer::shader::texture`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use raytracer::shader::texture;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:89:28
[INFO] [stdout]    |
[INFO] [stdout] 89 |     let world: Box<Vec<Box<Renderable>>> = Box::new(vec![
[INFO] [stdout]    |                            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 89 -     let world: Box<Vec<Box<Renderable>>> = Box::new(vec![
[INFO] [stdout] 89 +     let world: Box<Vec<Box<dyn Renderable>>> = Box::new(vec![
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:83:21
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let mat_red   = Material::lambertian_constant(Vec3::new(0.65,0.05,0.05));
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let mat_red   = <dyn Material>::lambertian_constant(Vec3::new(0.65,0.05,0.05));
[INFO] [stdout]    |                     ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:84:21
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let mat_green = Material::lambertian_constant(Vec3::new(0.12,0.45,0.15));
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let mat_green = <dyn Material>::lambertian_constant(Vec3::new(0.12,0.45,0.15));
[INFO] [stdout]    |                     ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let mat_white = Material::lambertian_constant(Vec3::new(0.73,0.73,0.73));
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let mat_white = <dyn Material>::lambertian_constant(Vec3::new(0.73,0.73,0.73));
[INFO] [stdout]    |                     ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:87:21
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mat_light = Material::diffuse_light_constant(Vec3::new(5.0,5.0,5.0));
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mat_light = <dyn Material>::diffuse_light_constant(Vec3::new(5.0,5.0,5.0));
[INFO] [stdout]    |                     ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:88:21
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let mat_iso   = Material::isotropic_constant(Vec3::new(1.0,1.0,1.0));
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let mat_iso   = <dyn Material>::isotropic_constant(Vec3::new(1.0,1.0,1.0));
[INFO] [stdout]    |                     ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mat_iso`
[INFO] [stdout]   --> src/main.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let mat_iso   = Material::isotropic_constant(Vec3::new(1.0,1.0,1.0));
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mat_iso`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PNG`
[INFO] [stdout]    --> src/main.rs:194:5
[INFO] [stdout]     |
[INFO] [stdout] 194 |     PNG
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] running `Command { std: "docker" "inspect" "653ac4aae249a25c00f8bfa61257121b3c0a1fd1f837fba498144e34f86d57c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "653ac4aae249a25c00f8bfa61257121b3c0a1fd1f837fba498144e34f86d57c1", kill_on_drop: false }`
[INFO] [stdout] 653ac4aae249a25c00f8bfa61257121b3c0a1fd1f837fba498144e34f86d57c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31e2f0f4c70b7999ddea4cfa3ff357391692c70de8d5ae1f8da23473905cfe6c
[INFO] running `Command { std: "docker" "start" "-a" "31e2f0f4c70b7999ddea4cfa3ff357391692c70de8d5ae1f8da23473905cfe6c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:109:26
[INFO] [stdout]     |
[INFO] [stdout] 109 |     pub left: Option<Box<BVHItem>>,
[INFO] [stdout]     |                          ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 109 -     pub left: Option<Box<BVHItem>>,
[INFO] [stdout] 109 +     pub left: Option<Box<dyn BVHItem>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:110:27
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub right: Option<Box<BVHItem>>,
[INFO] [stdout]     |                           ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 110 -     pub right: Option<Box<BVHItem>>,
[INFO] [stdout] 110 +     pub right: Option<Box<dyn BVHItem>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/cube.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |     sides: Vec<Box<Hitable>>
[INFO] [stdout]    |                    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 -     sides: Vec<Box<Hitable>>
[INFO] [stdout] 11 +     sides: Vec<Box<dyn Hitable>>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:62:29
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl Renderable for Vec<Box<Renderable>> {
[INFO] [stdout]    |                             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 62 - impl Renderable for Vec<Box<Renderable>> {
[INFO] [stdout] 62 + impl Renderable for Vec<Box<dyn Renderable>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:14:75
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)>;
[INFO] [stdout]    |                                                                           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)>;
[INFO] [stdout] 14 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:48:75
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout]    |                                                                           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 48 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout] 48 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:63:75
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout]    |                                                                           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout] 63 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/render.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |     scene: Box<Renderable + Sync>,
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 40 -     scene: Box<Renderable + Sync>,
[INFO] [stdout] 40 +     scene: Box<dyn Renderable + Sync>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:114:53
[INFO] [stdout]     |
[INFO] [stdout] 114 | fn sample(x: i32, y: i32, nx: i32, ny: i32, scene: &Renderable, camera: &Camera, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout]     |                                                     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 114 - fn sample(x: i32, y: i32, nx: i32, ny: i32, scene: &Renderable, camera: &Camera, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout] 114 + fn sample(x: i32, y: i32, nx: i32, ny: i32, scene: &dyn Renderable, camera: &Camera, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:126:27
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn color(r: &Ray, world: &Renderable, depth: i32, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout]     |                           ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 126 - fn color(r: &Ray, world: &Renderable, depth: i32, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout] 126 + fn color(r: &Ray, world: &dyn Renderable, depth: i32, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:157:30
[INFO] [stdout]     |
[INFO] [stdout] 157 | pub fn random_scene() -> Box<Renderable + Sync> {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 157 - pub fn random_scene() -> Box<Renderable + Sync> {
[INFO] [stdout] 157 + pub fn random_scene() -> Box<dyn Renderable + Sync> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vec3.rs:38:26
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn map(self, f: &Fn(f64) -> f64) -> Vec3 {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 -     pub fn map(self, f: &Fn(f64) -> f64) -> Vec3 {
[INFO] [stdout] 38 +     pub fn map(self, f: &dyn Fn(f64) -> f64) -> Vec3 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vec3.rs:42:39
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn map2(a: Vec3, b: Vec3, f: &Fn(f64, f64) -> f64) -> Vec3 {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 42 -     pub fn map2(a: Vec3, b: Vec3, f: &Fn(f64, f64) -> f64) -> Vec3 {
[INFO] [stdout] 42 +     pub fn map2(a: Vec3, b: Vec3, f: &dyn Fn(f64, f64) -> f64) -> Vec3 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/bvh.rs:16:39
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn compare_by_axis(&self, other: &BoundingBox, axis: &Axis) -> Ordering {
[INFO] [stdout]    |                                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 -     fn compare_by_axis(&self, other: &BoundingBox, axis: &Axis) -> Ordering {
[INFO] [stdout] 16 +     fn compare_by_axis(&self, other: &dyn BoundingBox, axis: &Axis) -> Ordering {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:102:35
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn as_bounding_box(&self) -> &BoundingBox;
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 102 -     fn as_bounding_box(&self) -> &BoundingBox;
[INFO] [stdout] 102 +     fn as_bounding_box(&self) -> &dyn BoundingBox;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:105:35
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn as_bounding_box(&self) -> &BoundingBox { self }
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 105 -     fn as_bounding_box(&self) -> &BoundingBox { self }
[INFO] [stdout] 105 +     fn as_bounding_box(&self) -> &dyn BoundingBox { self }
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling raytracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:115:38
[INFO] [stdout]     |
[INFO] [stdout] 115 |     pub fn new(mut hitables: Vec<Box<BVHItem>>) -> Node {
[INFO] [stdout]     |                                      ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 115 -     pub fn new(mut hitables: Vec<Box<BVHItem>>) -> Node {
[INFO] [stdout] 115 +     pub fn new(mut hitables: Vec<Box<dyn BVHItem>>) -> Node {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:158:75
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout]     |                                                                           ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 158 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout] 158 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/hitable.rs:21:26
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Hitable for Vec<Box<Hitable>> {
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 - impl Hitable for Vec<Box<Hitable>> {
[INFO] [stdout] 21 + impl Hitable for Vec<Box<dyn Hitable>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/shader/material.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Material {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 35 - impl Material {
[INFO] [stdout] 35 + impl dyn Material {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:118:35
[INFO] [stdout]     |
[INFO] [stdout] 118 |         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout]     |                                   ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 118 -         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout] 118 +         hitables.sort_by(|a: &Box<dyn BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:118:53
[INFO] [stdout]     |
[INFO] [stdout] 118 |         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout]     |                                                     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 118 -         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout] 118 +         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<dyn BVHItem>| {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/cube.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut sides: Vec<Box<Hitable>> = Vec::with_capacity(6);
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 -         let mut sides: Vec<Box<Hitable>> = Vec::with_capacity(6);
[INFO] [stdout] 23 +         let mut sides: Vec<Box<dyn Hitable>> = Vec::with_capacity(6);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:49:71
[INFO] [stdout]    |
[INFO] [stdout] 49 |         self.geometry.hit(r,t_min,t_max).map(|h| (h, &self.shader as &Material))
[INFO] [stdout]    |                                                                       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 49 -         self.geometry.hit(r,t_min,t_max).map(|h| (h, &self.shader as &Material))
[INFO] [stdout] 49 +         self.geometry.hit(r,t_min,t_max).map(|h| (h, &self.shader as &dyn Material))
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/shader/material.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         Material::lambertian(texture::constant_texture(albedo))
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 |         <dyn Material>::lambertian(texture::constant_texture(albedo))
[INFO] [stdout]    |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/shader/material.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         Material::diffuse_light(texture::constant_texture(emit))
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 61 |         <dyn Material>::diffuse_light(texture::constant_texture(emit))
[INFO] [stdout]    |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/shader/material.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Material::isotropic(texture::constant_texture(emit))
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 71 |         <dyn Material>::isotropic(texture::constant_texture(emit))
[INFO] [stdout]    |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/render.rs:50:34
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let shareable_scene: Arc<Box<Renderable>> = Arc::new(scene);
[INFO] [stdout]    |                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 50 -     let shareable_scene: Arc<Box<Renderable>> = Arc::new(scene);
[INFO] [stdout] 50 +     let shareable_scene: Arc<Box<dyn Renderable>> = Arc::new(scene);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:158:28
[INFO] [stdout]     |
[INFO] [stdout] 158 |     let mut items: Vec<Box<bvh::BVHItem>> = Vec::new();
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 158 -     let mut items: Vec<Box<bvh::BVHItem>> = Vec::new();
[INFO] [stdout] 158 +     let mut items: Vec<Box<dyn bvh::BVHItem>> = Vec::new();
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 166 |         Material::lambertian_constant(random::<Vec3>()),
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 166 |         <dyn Material>::lambertian_constant(random::<Vec3>()),
[INFO] [stdout]     |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:175:9
[INFO] [stdout]     |
[INFO] [stdout] 175 |         Material::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 175 |         <dyn Material>::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stdout]     |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:182:9
[INFO] [stdout]     |
[INFO] [stdout] 182 |         Material::metal((random::<Vec3>() + 1.0) * 0.5, random::<f64>() * 0.3),
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 182 |         <dyn Material>::metal((random::<Vec3>() + 1.0) * 0.5, random::<f64>() * 0.3),
[INFO] [stdout]     |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:189:9
[INFO] [stdout]     |
[INFO] [stdout] 189 |         Material::dielectric(1.5),
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 189 |         <dyn Material>::dielectric(1.5),
[INFO] [stdout]     |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:208:25
[INFO] [stdout]     |
[INFO] [stdout] 208 |                         Material::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 208 |                         <dyn Material>::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stdout]     |                         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:217:25
[INFO] [stdout]     |
[INFO] [stdout] 217 |                         Material::metal(
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 217 |                         <dyn Material>::metal(
[INFO] [stdout]     |                         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:230:25
[INFO] [stdout]     |
[INFO] [stdout] 230 |                         Material::dielectric(1.5),
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 230 |                         <dyn Material>::dielectric(1.5),
[INFO] [stdout]     |                         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]    --> src/shader/material.rs:123:49
[INFO] [stdout]     |
[INFO] [stdout] 123 |     fn scatter(&self, r: &Ray, hit: &HitRecord, rng: &mut XorShiftRng) -> Option<(Vec3, Ray)> {
[INFO] [stdout]     |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]    --> src/shader/material.rs:161:51
[INFO] [stdout]     |
[INFO] [stdout] 161 |     fn scatter(&self, _r: &Ray, _hit: &HitRecord, rng: &mut XorShiftRng) -> Option<(Vec3, Ray)> {
[INFO] [stdout]     |                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]    --> src/shader/material.rs:179:23
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn emitted(&self, u: f64, v: f64, p: &Vec3) -> Option<Vec3> {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/shader/material.rs:179:31
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn emitted(&self, u: f64, v: f64, p: &Vec3) -> Option<Vec3> {
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/shader/material.rs:179:39
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn emitted(&self, u: f64, v: f64, p: &Vec3) -> Option<Vec3> {
[INFO] [stdout]     |                                       ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/util.rs:14:14
[INFO] [stdout]    |
[INFO] [stdout] 14 |         AXIS.into_iter()
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 14 |         AXIS.iter()
[INFO] [stdout]    |              ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 14 |         IntoIterator::into_iter(AXIS)
[INFO] [stdout]    |         ++++++++++++++++++++++++    ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/render.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |             writeln!(&mut ::std::io::stderr(), "Thread {} done", nth);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 43 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hitable`
[INFO] [stdout]  --> src/main.rs:7:24
[INFO] [stdout]   |
[INFO] [stdout] 7 | use raytracer::model::{hitable, Renderable, Model};
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `raytracer::model::sphere::Sphere`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use raytracer::model::sphere::Sphere;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `raytracer::model::constant_medium::ConstantMedium`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use raytracer::model::constant_medium::ConstantMedium;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `raytracer::shader::texture`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use raytracer::shader::texture;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:89:28
[INFO] [stdout]    |
[INFO] [stdout] 89 |     let world: Box<Vec<Box<Renderable>>> = Box::new(vec![
[INFO] [stdout]    |                            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 89 -     let world: Box<Vec<Box<Renderable>>> = Box::new(vec![
[INFO] [stdout] 89 +     let world: Box<Vec<Box<dyn Renderable>>> = Box::new(vec![
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:83:21
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let mat_red   = Material::lambertian_constant(Vec3::new(0.65,0.05,0.05));
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let mat_red   = <dyn Material>::lambertian_constant(Vec3::new(0.65,0.05,0.05));
[INFO] [stdout]    |                     ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:84:21
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let mat_green = Material::lambertian_constant(Vec3::new(0.12,0.45,0.15));
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 84 |     let mat_green = <dyn Material>::lambertian_constant(Vec3::new(0.12,0.45,0.15));
[INFO] [stdout]    |                     ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let mat_white = Material::lambertian_constant(Vec3::new(0.73,0.73,0.73));
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 85 |     let mat_white = <dyn Material>::lambertian_constant(Vec3::new(0.73,0.73,0.73));
[INFO] [stdout]    |                     ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:87:21
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mat_light = Material::diffuse_light_constant(Vec3::new(5.0,5.0,5.0));
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mat_light = <dyn Material>::diffuse_light_constant(Vec3::new(5.0,5.0,5.0));
[INFO] [stdout]    |                     ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:88:21
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let mat_iso   = Material::isotropic_constant(Vec3::new(1.0,1.0,1.0));
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let mat_iso   = <dyn Material>::isotropic_constant(Vec3::new(1.0,1.0,1.0));
[INFO] [stdout]    |                     ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mat_iso`
[INFO] [stdout]   --> src/main.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let mat_iso   = Material::isotropic_constant(Vec3::new(1.0,1.0,1.0));
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mat_iso`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PNG`
[INFO] [stdout]    --> src/main.rs:194:5
[INFO] [stdout]     |
[INFO] [stdout] 194 |     PNG
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:109:26
[INFO] [stdout]     |
[INFO] [stdout] 109 |     pub left: Option<Box<BVHItem>>,
[INFO] [stdout]     |                          ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 109 -     pub left: Option<Box<BVHItem>>,
[INFO] [stdout] 109 +     pub left: Option<Box<dyn BVHItem>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:110:27
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub right: Option<Box<BVHItem>>,
[INFO] [stdout]     |                           ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 110 -     pub right: Option<Box<BVHItem>>,
[INFO] [stdout] 110 +     pub right: Option<Box<dyn BVHItem>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/cube.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |     sides: Vec<Box<Hitable>>
[INFO] [stdout]    |                    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 -     sides: Vec<Box<Hitable>>
[INFO] [stdout] 11 +     sides: Vec<Box<dyn Hitable>>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:62:29
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl Renderable for Vec<Box<Renderable>> {
[INFO] [stdout]    |                             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 62 - impl Renderable for Vec<Box<Renderable>> {
[INFO] [stdout] 62 + impl Renderable for Vec<Box<dyn Renderable>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:14:75
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)>;
[INFO] [stdout]    |                                                                           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)>;
[INFO] [stdout] 14 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:48:75
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout]    |                                                                           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 48 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout] 48 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:63:75
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout]    |                                                                           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout] 63 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/render.rs:40:16
[INFO] [stdout]    |
[INFO] [stdout] 40 |     scene: Box<Renderable + Sync>,
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 40 -     scene: Box<Renderable + Sync>,
[INFO] [stdout] 40 +     scene: Box<dyn Renderable + Sync>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:114:53
[INFO] [stdout]     |
[INFO] [stdout] 114 | fn sample(x: i32, y: i32, nx: i32, ny: i32, scene: &Renderable, camera: &Camera, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout]     |                                                     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 114 - fn sample(x: i32, y: i32, nx: i32, ny: i32, scene: &Renderable, camera: &Camera, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout] 114 + fn sample(x: i32, y: i32, nx: i32, ny: i32, scene: &dyn Renderable, camera: &Camera, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:126:27
[INFO] [stdout]     |
[INFO] [stdout] 126 | fn color(r: &Ray, world: &Renderable, depth: i32, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout]     |                           ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 126 - fn color(r: &Ray, world: &Renderable, depth: i32, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout] 126 + fn color(r: &Ray, world: &dyn Renderable, depth: i32, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:157:30
[INFO] [stdout]     |
[INFO] [stdout] 157 | pub fn random_scene() -> Box<Renderable + Sync> {
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 157 - pub fn random_scene() -> Box<Renderable + Sync> {
[INFO] [stdout] 157 + pub fn random_scene() -> Box<dyn Renderable + Sync> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vec3.rs:38:26
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn map(self, f: &Fn(f64) -> f64) -> Vec3 {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 -     pub fn map(self, f: &Fn(f64) -> f64) -> Vec3 {
[INFO] [stdout] 38 +     pub fn map(self, f: &dyn Fn(f64) -> f64) -> Vec3 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/vec3.rs:42:39
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn map2(a: Vec3, b: Vec3, f: &Fn(f64, f64) -> f64) -> Vec3 {
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 42 -     pub fn map2(a: Vec3, b: Vec3, f: &Fn(f64, f64) -> f64) -> Vec3 {
[INFO] [stdout] 42 +     pub fn map2(a: Vec3, b: Vec3, f: &dyn Fn(f64, f64) -> f64) -> Vec3 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/bvh.rs:16:39
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn compare_by_axis(&self, other: &BoundingBox, axis: &Axis) -> Ordering {
[INFO] [stdout]    |                                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 -     fn compare_by_axis(&self, other: &BoundingBox, axis: &Axis) -> Ordering {
[INFO] [stdout] 16 +     fn compare_by_axis(&self, other: &dyn BoundingBox, axis: &Axis) -> Ordering {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:102:35
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn as_bounding_box(&self) -> &BoundingBox;
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 102 -     fn as_bounding_box(&self) -> &BoundingBox;
[INFO] [stdout] 102 +     fn as_bounding_box(&self) -> &dyn BoundingBox;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:105:35
[INFO] [stdout]     |
[INFO] [stdout] 105 |     fn as_bounding_box(&self) -> &BoundingBox { self }
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 105 -     fn as_bounding_box(&self) -> &BoundingBox { self }
[INFO] [stdout] 105 +     fn as_bounding_box(&self) -> &dyn BoundingBox { self }
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:115:38
[INFO] [stdout]     |
[INFO] [stdout] 115 |     pub fn new(mut hitables: Vec<Box<BVHItem>>) -> Node {
[INFO] [stdout]     |                                      ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 115 -     pub fn new(mut hitables: Vec<Box<BVHItem>>) -> Node {
[INFO] [stdout] 115 +     pub fn new(mut hitables: Vec<Box<dyn BVHItem>>) -> Node {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:158:75
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout]     |                                                                           ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 158 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stdout] 158 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/hitable.rs:21:26
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Hitable for Vec<Box<Hitable>> {
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 21 - impl Hitable for Vec<Box<Hitable>> {
[INFO] [stdout] 21 + impl Hitable for Vec<Box<dyn Hitable>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/shader/material.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Material {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 35 - impl Material {
[INFO] [stdout] 35 + impl dyn Material {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:118:35
[INFO] [stdout]     |
[INFO] [stdout] 118 |         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout]     |                                   ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 118 -         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout] 118 +         hitables.sort_by(|a: &Box<dyn BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:118:53
[INFO] [stdout]     |
[INFO] [stdout] 118 |         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout]     |                                                     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 118 -         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stdout] 118 +         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<dyn BVHItem>| {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/cube.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |         let mut sides: Vec<Box<Hitable>> = Vec::with_capacity(6);
[INFO] [stdout]    |                                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 23 -         let mut sides: Vec<Box<Hitable>> = Vec::with_capacity(6);
[INFO] [stdout] 23 +         let mut sides: Vec<Box<dyn Hitable>> = Vec::with_capacity(6);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/model/mod.rs:49:71
[INFO] [stdout]    |
[INFO] [stdout] 49 |         self.geometry.hit(r,t_min,t_max).map(|h| (h, &self.shader as &Material))
[INFO] [stdout]    |                                                                       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 49 -         self.geometry.hit(r,t_min,t_max).map(|h| (h, &self.shader as &Material))
[INFO] [stdout] 49 +         self.geometry.hit(r,t_min,t_max).map(|h| (h, &self.shader as &dyn Material))
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/shader/material.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |         Material::lambertian(texture::constant_texture(albedo))
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 38 |         <dyn Material>::lambertian(texture::constant_texture(albedo))
[INFO] [stdout]    |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/shader/material.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         Material::diffuse_light(texture::constant_texture(emit))
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 61 |         <dyn Material>::diffuse_light(texture::constant_texture(emit))
[INFO] [stdout]    |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/shader/material.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         Material::isotropic(texture::constant_texture(emit))
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 71 |         <dyn Material>::isotropic(texture::constant_texture(emit))
[INFO] [stdout]    |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/render.rs:50:34
[INFO] [stdout]    |
[INFO] [stdout] 50 |     let shareable_scene: Arc<Box<Renderable>> = Arc::new(scene);
[INFO] [stdout]    |                                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 50 -     let shareable_scene: Arc<Box<Renderable>> = Arc::new(scene);
[INFO] [stdout] 50 +     let shareable_scene: Arc<Box<dyn Renderable>> = Arc::new(scene);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:158:28
[INFO] [stdout]     |
[INFO] [stdout] 158 |     let mut items: Vec<Box<bvh::BVHItem>> = Vec::new();
[INFO] [stdout]     |                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 158 -     let mut items: Vec<Box<bvh::BVHItem>> = Vec::new();
[INFO] [stdout] 158 +     let mut items: Vec<Box<dyn bvh::BVHItem>> = Vec::new();
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 166 |         Material::lambertian_constant(random::<Vec3>()),
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 166 |         <dyn Material>::lambertian_constant(random::<Vec3>()),
[INFO] [stdout]     |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:175:9
[INFO] [stdout]     |
[INFO] [stdout] 175 |         Material::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 175 |         <dyn Material>::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stdout]     |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:182:9
[INFO] [stdout]     |
[INFO] [stdout] 182 |         Material::metal((random::<Vec3>() + 1.0) * 0.5, random::<f64>() * 0.3),
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 182 |         <dyn Material>::metal((random::<Vec3>() + 1.0) * 0.5, random::<f64>() * 0.3),
[INFO] [stdout]     |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:189:9
[INFO] [stdout]     |
[INFO] [stdout] 189 |         Material::dielectric(1.5),
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 189 |         <dyn Material>::dielectric(1.5),
[INFO] [stdout]     |         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:208:25
[INFO] [stdout]     |
[INFO] [stdout] 208 |                         Material::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 208 |                         <dyn Material>::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stdout]     |                         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:217:25
[INFO] [stdout]     |
[INFO] [stdout] 217 |                         Material::metal(
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 217 |                         <dyn Material>::metal(
[INFO] [stdout]     |                         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/render.rs:230:25
[INFO] [stdout]     |
[INFO] [stdout] 230 |                         Material::dielectric(1.5),
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 230 |                         <dyn Material>::dielectric(1.5),
[INFO] [stdout]     |                         ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:236:17
[INFO] [stdout]     |
[INFO] [stdout] 236 |                 Material::lambertian_constant(Vec3::new(0.5,0.5,0.5))
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 236 |                 <dyn Material>::lambertian_constant(Vec3::new(0.5,0.5,0.5))
[INFO] [stdout]     |                 ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:247:17
[INFO] [stdout]     |
[INFO] [stdout] 247 |                 Material::lambertian_constant(Vec3::new(0.5,0.5,0.5))
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 247 |                 <dyn Material>::lambertian_constant(Vec3::new(0.5,0.5,0.5))
[INFO] [stdout]     |                 ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/model/bvh.rs:263:17
[INFO] [stdout]     |
[INFO] [stdout] 263 |                 Material::lambertian_constant(Vec3::new(0.5,0.5,0.5))
[INFO] [stdout]     |                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 263 |                 <dyn Material>::lambertian_constant(Vec3::new(0.5,0.5,0.5))
[INFO] [stdout]     |                 ++++         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]    --> src/shader/material.rs:123:49
[INFO] [stdout]     |
[INFO] [stdout] 123 |     fn scatter(&self, r: &Ray, hit: &HitRecord, rng: &mut XorShiftRng) -> Option<(Vec3, Ray)> {
[INFO] [stdout]     |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]    --> src/shader/material.rs:161:51
[INFO] [stdout]     |
[INFO] [stdout] 161 |     fn scatter(&self, _r: &Ray, _hit: &HitRecord, rng: &mut XorShiftRng) -> Option<(Vec3, Ray)> {
[INFO] [stdout]     |                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]    --> src/shader/material.rs:179:23
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn emitted(&self, u: f64, v: f64, p: &Vec3) -> Option<Vec3> {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/shader/material.rs:179:31
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn emitted(&self, u: f64, v: f64, p: &Vec3) -> Option<Vec3> {
[INFO] [stdout]     |                               ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]    --> src/shader/material.rs:179:39
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn emitted(&self, u: f64, v: f64, p: &Vec3) -> Option<Vec3> {
[INFO] [stdout]     |                                       ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_perlin_generate`
[INFO] [stdout]    --> src/shader/texture.rs:254:8
[INFO] [stdout]     |
[INFO] [stdout] 254 |     fn test_perlin_generate() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]   --> src/util.rs:14:14
[INFO] [stdout]    |
[INFO] [stdout] 14 |         AXIS.into_iter()
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]    = warning: this changes meaning in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 14 |         AXIS.iter()
[INFO] [stdout]    |              ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]    |
[INFO] [stdout] 14 |         IntoIterator::into_iter(AXIS)
[INFO] [stdout]    |         ++++++++++++++++++++++++    ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/render.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |             writeln!(&mut ::std::io::stderr(), "Thread {} done", nth);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 47 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.02s
[INFO] running `Command { std: "docker" "inspect" "31e2f0f4c70b7999ddea4cfa3ff357391692c70de8d5ae1f8da23473905cfe6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31e2f0f4c70b7999ddea4cfa3ff357391692c70de8d5ae1f8da23473905cfe6c", kill_on_drop: false }`
[INFO] [stdout] 31e2f0f4c70b7999ddea4cfa3ff357391692c70de8d5ae1f8da23473905cfe6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-79/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a6761ec83a4bb22c0ac4ed19b1a570f792f36eb93148de30952ab0f282c5685d
[INFO] running `Command { std: "docker" "start" "-a" "a6761ec83a4bb22c0ac4ed19b1a570f792f36eb93148de30952ab0f282c5685d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model/bvh.rs:109:26
[INFO] [stderr]     |
[INFO] [stderr] 109 |     pub left: Option<Box<BVHItem>>,
[INFO] [stderr]     |                          ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 109 -     pub left: Option<Box<BVHItem>>,
[INFO] [stderr] 109 +     pub left: Option<Box<dyn BVHItem>>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model/bvh.rs:110:27
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub right: Option<Box<BVHItem>>,
[INFO] [stderr]     |                           ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 110 -     pub right: Option<Box<BVHItem>>,
[INFO] [stderr] 110 +     pub right: Option<Box<dyn BVHItem>>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model/cube.rs:11:20
[INFO] [stderr]    |
[INFO] [stderr] 11 |     sides: Vec<Box<Hitable>>
[INFO] [stderr]    |                    ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 11 -     sides: Vec<Box<Hitable>>
[INFO] [stderr] 11 +     sides: Vec<Box<dyn Hitable>>
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model/mod.rs:62:29
[INFO] [stderr]    |
[INFO] [stderr] 62 | impl Renderable for Vec<Box<Renderable>> {
[INFO] [stderr]    |                             ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 62 - impl Renderable for Vec<Box<Renderable>> {
[INFO] [stderr] 62 + impl Renderable for Vec<Box<dyn Renderable>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model/mod.rs:14:75
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)>;
[INFO] [stderr]    |                                                                           ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 14 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)>;
[INFO] [stderr] 14 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model/mod.rs:48:75
[INFO] [stderr]    |
[INFO] [stderr] 48 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stderr]    |                                                                           ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 48 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stderr] 48 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model/mod.rs:63:75
[INFO] [stderr]    |
[INFO] [stderr] 63 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stderr]    |                                                                           ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 63 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stderr] 63 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/render.rs:40:16
[INFO] [stderr]    |
[INFO] [stderr] 40 |     scene: Box<Renderable + Sync>,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 40 -     scene: Box<Renderable + Sync>,
[INFO] [stderr] 40 +     scene: Box<dyn Renderable + Sync>,
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/render.rs:114:53
[INFO] [stderr]     |
[INFO] [stderr] 114 | fn sample(x: i32, y: i32, nx: i32, ny: i32, scene: &Renderable, camera: &Camera, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stderr]     |                                                     ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 114 - fn sample(x: i32, y: i32, nx: i32, ny: i32, scene: &Renderable, camera: &Camera, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stderr] 114 + fn sample(x: i32, y: i32, nx: i32, ny: i32, scene: &dyn Renderable, camera: &Camera, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/render.rs:126:27
[INFO] [stderr]     |
[INFO] [stderr] 126 | fn color(r: &Ray, world: &Renderable, depth: i32, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stderr]     |                           ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 126 - fn color(r: &Ray, world: &Renderable, depth: i32, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stderr] 126 + fn color(r: &Ray, world: &dyn Renderable, depth: i32, rng: &mut XorShiftRng) -> Vec3 {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/render.rs:157:30
[INFO] [stderr]     |
[INFO] [stderr] 157 | pub fn random_scene() -> Box<Renderable + Sync> {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 157 - pub fn random_scene() -> Box<Renderable + Sync> {
[INFO] [stderr] 157 + pub fn random_scene() -> Box<dyn Renderable + Sync> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vec3.rs:38:26
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn map(self, f: &Fn(f64) -> f64) -> Vec3 {
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 38 -     pub fn map(self, f: &Fn(f64) -> f64) -> Vec3 {
[INFO] [stderr] 38 +     pub fn map(self, f: &dyn Fn(f64) -> f64) -> Vec3 {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vec3.rs:42:39
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn map2(a: Vec3, b: Vec3, f: &Fn(f64, f64) -> f64) -> Vec3 {
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 42 -     pub fn map2(a: Vec3, b: Vec3, f: &Fn(f64, f64) -> f64) -> Vec3 {
[INFO] [stderr] 42 +     pub fn map2(a: Vec3, b: Vec3, f: &dyn Fn(f64, f64) -> f64) -> Vec3 {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model/bvh.rs:16:39
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn compare_by_axis(&self, other: &BoundingBox, axis: &Axis) -> Ordering {
[INFO] [stderr]    |                                       ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 16 -     fn compare_by_axis(&self, other: &BoundingBox, axis: &Axis) -> Ordering {
[INFO] [stderr] 16 +     fn compare_by_axis(&self, other: &dyn BoundingBox, axis: &Axis) -> Ordering {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model/bvh.rs:102:35
[INFO] [stderr]     |
[INFO] [stderr] 102 |     fn as_bounding_box(&self) -> &BoundingBox;
[INFO] [stderr]     |                                   ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 102 -     fn as_bounding_box(&self) -> &BoundingBox;
[INFO] [stderr] 102 +     fn as_bounding_box(&self) -> &dyn BoundingBox;
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model/bvh.rs:105:35
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn as_bounding_box(&self) -> &BoundingBox { self }
[INFO] [stderr]     |                                   ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 105 -     fn as_bounding_box(&self) -> &BoundingBox { self }
[INFO] [stderr] 105 +     fn as_bounding_box(&self) -> &dyn BoundingBox { self }
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model/bvh.rs:115:38
[INFO] [stderr]     |
[INFO] [stderr] 115 |     pub fn new(mut hitables: Vec<Box<BVHItem>>) -> Node {
[INFO] [stderr]     |                                      ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 115 -     pub fn new(mut hitables: Vec<Box<BVHItem>>) -> Node {
[INFO] [stderr] 115 +     pub fn new(mut hitables: Vec<Box<dyn BVHItem>>) -> Node {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model/bvh.rs:158:75
[INFO] [stderr]     |
[INFO] [stderr] 158 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stderr]     |                                                                           ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 158 -     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &Material)> {
[INFO] [stderr] 158 +     fn hit(&self, r: &Ray, t_min: f64, t_max: f64) -> Option<(HitRecord, &dyn Material)> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model/hitable.rs:21:26
[INFO] [stderr]    |
[INFO] [stderr] 21 | impl Hitable for Vec<Box<Hitable>> {
[INFO] [stderr]    |                          ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 21 - impl Hitable for Vec<Box<Hitable>> {
[INFO] [stderr] 21 + impl Hitable for Vec<Box<dyn Hitable>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/shader/material.rs:35:6
[INFO] [stderr]    |
[INFO] [stderr] 35 | impl Material {
[INFO] [stderr]    |      ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 35 - impl Material {
[INFO] [stderr] 35 + impl dyn Material {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model/bvh.rs:118:35
[INFO] [stderr]     |
[INFO] [stderr] 118 |         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stderr]     |                                   ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 118 -         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stderr] 118 +         hitables.sort_by(|a: &Box<dyn BVHItem>, b: &Box<BVHItem>| {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model/bvh.rs:118:53
[INFO] [stderr]     |
[INFO] [stderr] 118 |         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stderr]     |                                                     ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 118 -         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<BVHItem>| {
[INFO] [stderr] 118 +         hitables.sort_by(|a: &Box<BVHItem>, b: &Box<dyn BVHItem>| {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model/cube.rs:23:32
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let mut sides: Vec<Box<Hitable>> = Vec::with_capacity(6);
[INFO] [stderr]    |                                ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 23 -         let mut sides: Vec<Box<Hitable>> = Vec::with_capacity(6);
[INFO] [stderr] 23 +         let mut sides: Vec<Box<dyn Hitable>> = Vec::with_capacity(6);
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/model/mod.rs:49:71
[INFO] [stderr]    |
[INFO] [stderr] 49 |         self.geometry.hit(r,t_min,t_max).map(|h| (h, &self.shader as &Material))
[INFO] [stderr]    |                                                                       ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 49 -         self.geometry.hit(r,t_min,t_max).map(|h| (h, &self.shader as &Material))
[INFO] [stderr] 49 +         self.geometry.hit(r,t_min,t_max).map(|h| (h, &self.shader as &dyn Material))
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/shader/material.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |         Material::lambertian(texture::constant_texture(albedo))
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 38 |         <dyn Material>::lambertian(texture::constant_texture(albedo))
[INFO] [stderr]    |         ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/shader/material.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 |         Material::diffuse_light(texture::constant_texture(emit))
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 61 |         <dyn Material>::diffuse_light(texture::constant_texture(emit))
[INFO] [stderr]    |         ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/shader/material.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |         Material::isotropic(texture::constant_texture(emit))
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 71 |         <dyn Material>::isotropic(texture::constant_texture(emit))
[INFO] [stderr]    |         ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/render.rs:50:34
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let shareable_scene: Arc<Box<Renderable>> = Arc::new(scene);
[INFO] [stderr]    |                                  ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 50 -     let shareable_scene: Arc<Box<Renderable>> = Arc::new(scene);
[INFO] [stderr] 50 +     let shareable_scene: Arc<Box<dyn Renderable>> = Arc::new(scene);
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/render.rs:158:28
[INFO] [stderr]     |
[INFO] [stderr] 158 |     let mut items: Vec<Box<bvh::BVHItem>> = Vec::new();
[INFO] [stderr]     |                            ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 158 -     let mut items: Vec<Box<bvh::BVHItem>> = Vec::new();
[INFO] [stderr] 158 +     let mut items: Vec<Box<dyn bvh::BVHItem>> = Vec::new();
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/render.rs:166:9
[INFO] [stderr]     |
[INFO] [stderr] 166 |         Material::lambertian_constant(random::<Vec3>()),
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 166 |         <dyn Material>::lambertian_constant(random::<Vec3>()),
[INFO] [stderr]     |         ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/render.rs:175:9
[INFO] [stderr]     |
[INFO] [stderr] 175 |         Material::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 175 |         <dyn Material>::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stderr]     |         ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/render.rs:182:9
[INFO] [stderr]     |
[INFO] [stderr] 182 |         Material::metal((random::<Vec3>() + 1.0) * 0.5, random::<f64>() * 0.3),
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 182 |         <dyn Material>::metal((random::<Vec3>() + 1.0) * 0.5, random::<f64>() * 0.3),
[INFO] [stderr]     |         ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/render.rs:189:9
[INFO] [stderr]     |
[INFO] [stderr] 189 |         Material::dielectric(1.5),
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 189 |         <dyn Material>::dielectric(1.5),
[INFO] [stderr]     |         ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/render.rs:208:25
[INFO] [stderr]     |
[INFO] [stderr] 208 |                         Material::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stderr]     |                         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 208 |                         <dyn Material>::lambertian_constant(random::<Vec3>() * random::<Vec3>()),
[INFO] [stderr]     |                         ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/render.rs:217:25
[INFO] [stderr]     |
[INFO] [stderr] 217 |                         Material::metal(
[INFO] [stderr]     |                         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 217 |                         <dyn Material>::metal(
[INFO] [stderr]     |                         ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/render.rs:230:25
[INFO] [stderr]     |
[INFO] [stderr] 230 |                         Material::dielectric(1.5),
[INFO] [stderr]     |                         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 230 |                         <dyn Material>::dielectric(1.5),
[INFO] [stderr]     |                         ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/shader/material.rs:123:49
[INFO] [stderr]     |
[INFO] [stderr] 123 |     fn scatter(&self, r: &Ray, hit: &HitRecord, rng: &mut XorShiftRng) -> Option<(Vec3, Ray)> {
[INFO] [stderr]     |                                                 ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/shader/material.rs:161:51
[INFO] [stderr]     |
[INFO] [stderr] 161 |     fn scatter(&self, _r: &Ray, _hit: &HitRecord, rng: &mut XorShiftRng) -> Option<(Vec3, Ray)> {
[INFO] [stderr]     |                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `u`
[INFO] [stderr]    --> src/shader/material.rs:179:23
[INFO] [stderr]     |
[INFO] [stderr] 179 |     fn emitted(&self, u: f64, v: f64, p: &Vec3) -> Option<Vec3> {
[INFO] [stderr]     |                       ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]    --> src/shader/material.rs:179:31
[INFO] [stderr]     |
[INFO] [stderr] 179 |     fn emitted(&self, u: f64, v: f64, p: &Vec3) -> Option<Vec3> {
[INFO] [stderr]     |                               ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `p`
[INFO] [stderr]    --> src/shader/material.rs:179:39
[INFO] [stderr]     |
[INFO] [stderr] 179 |     fn emitted(&self, u: f64, v: f64, p: &Vec3) -> Option<Vec3> {
[INFO] [stderr]     |                                       ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]   --> src/util.rs:14:14
[INFO] [stderr]    |
[INFO] [stderr] 14 |         AXIS.into_iter()
[INFO] [stderr]    |              ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this changes meaning in Rust 2021
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]    |
[INFO] [stderr] 14 |         AXIS.iter()
[INFO] [stderr]    |              ~~~~
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]    |
[INFO] [stderr] 14 |         IntoIterator::into_iter(AXIS)
[INFO] [stderr]    |         ++++++++++++++++++++++++    ~
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/render.rs:106:13
[INFO] [stderr]     |
[INFO] [stderr] 106 |             writeln!(&mut ::std::io::stderr(), "Thread {} done", nth);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model/bvh.rs:236:17
[INFO] [stderr]     |
[INFO] [stderr] 236 |                 Material::lambertian_constant(Vec3::new(0.5,0.5,0.5))
[INFO] [stderr]     |                 ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 236 |                 <dyn Material>::lambertian_constant(Vec3::new(0.5,0.5,0.5))
[INFO] [stderr]     |                 ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model/bvh.rs:247:17
[INFO] [stderr]     |
[INFO] [stderr] 247 |                 Material::lambertian_constant(Vec3::new(0.5,0.5,0.5))
[INFO] [stderr]     |                 ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 247 |                 <dyn Material>::lambertian_constant(Vec3::new(0.5,0.5,0.5))
[INFO] [stderr]     |                 ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/model/bvh.rs:263:17
[INFO] [stderr]     |
[INFO] [stderr] 263 |                 Material::lambertian_constant(Vec3::new(0.5,0.5,0.5))
[INFO] [stderr]     |                 ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 263 |                 <dyn Material>::lambertian_constant(Vec3::new(0.5,0.5,0.5))
[INFO] [stderr]     |                 ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_perlin_generate`
[INFO] [stderr]    --> src/shader/texture.rs:254:8
[INFO] [stderr]     |
[INFO] [stderr] 254 |     fn test_perlin_generate() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `raytracer` (lib) generated 43 warnings
[INFO] [stderr] warning: `raytracer` (lib test) generated 47 warnings (43 duplicates)
[INFO] [stderr] warning: unused import: `hitable`
[INFO] [stderr]  --> src/main.rs:7:24
[INFO] [stderr]   |
[INFO] [stderr] 7 | use raytracer::model::{hitable, Renderable, Model};
[INFO] [stderr]   |                        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `raytracer::model::sphere::Sphere`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use raytracer::model::sphere::Sphere;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `raytracer::model::constant_medium::ConstantMedium`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use raytracer::model::constant_medium::ConstantMedium;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `raytracer::shader::texture`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use raytracer::shader::texture;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:89:28
[INFO] [stderr]    |
[INFO] [stderr] 89 |     let world: Box<Vec<Box<Renderable>>> = Box::new(vec![
[INFO] [stderr]    |                            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 89 -     let world: Box<Vec<Box<Renderable>>> = Box::new(vec![
[INFO] [stderr] 89 +     let world: Box<Vec<Box<dyn Renderable>>> = Box::new(vec![
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:83:21
[INFO] [stderr]    |
[INFO] [stderr] 83 |     let mat_red   = Material::lambertian_constant(Vec3::new(0.65,0.05,0.05));
[INFO] [stderr]    |                     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 83 |     let mat_red   = <dyn Material>::lambertian_constant(Vec3::new(0.65,0.05,0.05));
[INFO] [stderr]    |                     ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:84:21
[INFO] [stderr]    |
[INFO] [stderr] 84 |     let mat_green = Material::lambertian_constant(Vec3::new(0.12,0.45,0.15));
[INFO] [stderr]    |                     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 84 |     let mat_green = <dyn Material>::lambertian_constant(Vec3::new(0.12,0.45,0.15));
[INFO] [stderr]    |                     ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:85:21
[INFO] [stderr]    |
[INFO] [stderr] 85 |     let mat_white = Material::lambertian_constant(Vec3::new(0.73,0.73,0.73));
[INFO] [stderr]    |                     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 85 |     let mat_white = <dyn Material>::lambertian_constant(Vec3::new(0.73,0.73,0.73));
[INFO] [stderr]    |                     ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:87:21
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let mat_light = Material::diffuse_light_constant(Vec3::new(5.0,5.0,5.0));
[INFO] [stderr]    |                     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 87 |     let mat_light = <dyn Material>::diffuse_light_constant(Vec3::new(5.0,5.0,5.0));
[INFO] [stderr]    |                     ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:88:21
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let mat_iso   = Material::isotropic_constant(Vec3::new(1.0,1.0,1.0));
[INFO] [stderr]    |                     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let mat_iso   = <dyn Material>::isotropic_constant(Vec3::new(1.0,1.0,1.0));
[INFO] [stderr]    |                     ++++         +
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mat_iso`
[INFO] [stderr]   --> src/main.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |     let mat_iso   = Material::isotropic_constant(Vec3::new(1.0,1.0,1.0));
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mat_iso`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `PNG`
[INFO] [stderr]    --> src/main.rs:194:5
[INFO] [stderr]     |
[INFO] [stderr] 194 |     PNG
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `raytracer` (bin "raytracer" test) generated 12 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 29.64s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/raytracer-c220778e56475511)
[INFO] [stdout] 
[INFO] [stdout] running 26 tests
[INFO] [stdout] test model::bvh::tests::surrounding_box ... ok
[INFO] [stdout] test model::bvh::tests::unit_aabb_hit ... ok
[INFO] [stdout] test model::bvh::bvh_tests::unit_bvh ... ok
[INFO] [stdout] test model::bvh::bvh_tests::bvh_miss ... ok
[INFO] [stdout] test model::bvh::tests::unit_aabb_miss ... ok
[INFO] [stdout] test model::bvh::bvh_tests::bvh_hit ... ok
[INFO] [stdout] test model::constant_medium::tests::test_find_bounding_hits ... ok
[INFO] [stdout] test ray::tests::test_point_at_parameter ... ok
[INFO] [stdout] test model::sphere::tests::test_hit_unit_sphere ... ok
[INFO] [stdout] test shader::material::tests::test_reflect ... ok
[INFO] [stdout] test vec3::tests::test_add_scalar ... ok
[INFO] [stdout] test vec3::tests::test_cross ... ok
[INFO] [stdout] test vec3::tests::test_div_scalar ... ok
[INFO] [stdout] test vec3::tests::test_dot ... ok
[INFO] [stdout] test vec3::tests::test_length ... ok
[INFO] [stdout] test vec3::tests::test_mul_scalar ... ok
[INFO] [stdout] test vec3::tests::test_normalized ... ok
[INFO] [stdout] test vec3::tests::test_normalized_unit ... ok
[INFO] [stdout] test vec3::tests::test_rotate_x_360 ... ok
[INFO] [stdout] test vec3::tests::test_rotate_x_inverse ... ok
[INFO] [stdout] test vec3::tests::test_rotate_y_inverse ... ok
[INFO] [stdout] test vec3::tests::test_rotate_z_inverse ... ok
[INFO] [stdout] test vec3::tests::test_rotate_y_360 ... ok
[INFO] [stdout] test vec3::tests::test_rotate_z_360 ... ok
[INFO] [stdout] test vec3::tests::test_squared_length ... ok
[INFO] [stdout] test vec3::tests::test_sub_scalar ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/raytracer-2dec2507a1ce6a55)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests raytracer
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a6761ec83a4bb22c0ac4ed19b1a570f792f36eb93148de30952ab0f282c5685d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6761ec83a4bb22c0ac4ed19b1a570f792f36eb93148de30952ab0f282c5685d", kill_on_drop: false }`
[INFO] [stdout] a6761ec83a4bb22c0ac4ed19b1a570f792f36eb93148de30952ab0f282c5685d