[INFO] updating cached repository peterpaul/rust-raytracer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/peterpaul/rust-raytracer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/peterpaul/rust-raytracer" "work/ex/clippy-test-run/sources/stable/gh/peterpaul/rust-raytracer"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/peterpaul/rust-raytracer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/peterpaul/rust-raytracer" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/peterpaul/rust-raytracer"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/peterpaul/rust-raytracer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 01bfff931c979bc8495bb5636f62a11f86db8589
[INFO] sha for GitHub repo peterpaul/rust-raytracer: 01bfff931c979bc8495bb5636f62a11f86db8589
[INFO] validating manifest of peterpaul/rust-raytracer on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of peterpaul/rust-raytracer on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing peterpaul/rust-raytracer
[INFO] finished frobbing peterpaul/rust-raytracer
[INFO] frobbed toml for peterpaul/rust-raytracer written to work/ex/clippy-test-run/sources/stable/gh/peterpaul/rust-raytracer/Cargo.toml
[INFO] started frobbing peterpaul/rust-raytracer
[INFO] finished frobbing peterpaul/rust-raytracer
[INFO] frobbed toml for peterpaul/rust-raytracer written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/peterpaul/rust-raytracer/Cargo.toml
[INFO] crate peterpaul/rust-raytracer has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting peterpaul/rust-raytracer against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/peterpaul/rust-raytracer:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dclippy::into_iter_on_array" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f428c05f3cb2e4733f14de1b2135dfe1e4778135fc1840b5ac2ef96b3932ea79
[INFO] running `"docker" "start" "-a" "f428c05f3cb2e4733f14de1b2135dfe1e4778135fc1840b5ac2ef96b3932ea79"`
[INFO] [stderr]     Checking raytracer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 | /         return if disc < 0.0 {
[INFO] [stderr] 62 | |             f64::INFINITY
[INFO] [stderr] 63 | |         } else {
[INFO] [stderr] 64 | |             let d: f64 = disc.sqrt();
[INFO] [stderr] ...  |
[INFO] [stderr] 75 | |             }
[INFO] [stderr] 76 | |         };
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 61 |         if disc < 0.0 {
[INFO] [stderr] 62 |             f64::INFINITY
[INFO] [stderr] 63 |         } else {
[INFO] [stderr] 64 |             let d: f64 = disc.sqrt();
[INFO] [stderr] 65 |             let t2: f64 = b + d;
[INFO] [stderr] 66 |             if t2 < 0.0 {
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 | /         return if l >= i.lambda {
[INFO] [stderr] 84 | |             i.clone()
[INFO] [stderr] 85 | |         } else {
[INFO] [stderr] 86 | |             let n: Vector3d = ray.orig + ray.dir * l - self.center;
[INFO] [stderr] 87 | |             Hit::new(l, n.normalize(), self.color)
[INFO] [stderr] 88 | |         };
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 83 |         if l >= i.lambda {
[INFO] [stderr] 84 |             i.clone()
[INFO] [stderr] 85 |         } else {
[INFO] [stderr] 86 |             let n: Vector3d = ray.orig + ray.dir * l - self.center;
[INFO] [stderr] 87 |             Hit::new(l, n.normalize(), self.color)
[INFO] [stderr] 88 |         }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 | /         return if disc < 0.0 {
[INFO] [stderr] 96 | |             false
[INFO] [stderr] 97 | |         } else {
[INFO] [stderr] 98 | |             b + disc.sqrt() >= 0.0
[INFO] [stderr] 99 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 95 |         if disc < 0.0 {
[INFO] [stderr] 96 |             false
[INFO] [stderr] 97 |         } else {
[INFO] [stderr] 98 |             b + disc.sqrt() >= 0.0
[INFO] [stderr] 99 |         }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:135:9
[INFO] [stderr]     |
[INFO] [stderr] 135 | /         return if l >= i.lambda {
[INFO] [stderr] 136 | |             i.clone()
[INFO] [stderr] 137 | |         } else {
[INFO] [stderr] 138 | |             let mut out: Hit = i.clone();
[INFO] [stderr] ...   |
[INFO] [stderr] 142 | |             out
[INFO] [stderr] 143 | |         };
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 135 |         if l >= i.lambda {
[INFO] [stderr] 136 |             i.clone()
[INFO] [stderr] 137 |         } else {
[INFO] [stderr] 138 |             let mut out: Hit = i.clone();
[INFO] [stderr] 139 |             for scene in &self.objects {
[INFO] [stderr] 140 |                 out = scene.intersect(&out, ray);
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:211:5
[INFO] [stderr]     |
[INFO] [stderr] 211 |     return Box::new(Group::new(objects, ZERO));
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Box::new(Group::new(objects, ZERO))`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 | /         return if disc < 0.0 {
[INFO] [stderr] 62 | |             f64::INFINITY
[INFO] [stderr] 63 | |         } else {
[INFO] [stderr] 64 | |             let d: f64 = disc.sqrt();
[INFO] [stderr] ...  |
[INFO] [stderr] 75 | |             }
[INFO] [stderr] 76 | |         };
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 61 |         if disc < 0.0 {
[INFO] [stderr] 62 |             f64::INFINITY
[INFO] [stderr] 63 |         } else {
[INFO] [stderr] 64 |             let d: f64 = disc.sqrt();
[INFO] [stderr] 65 |             let t2: f64 = b + d;
[INFO] [stderr] 66 |             if t2 < 0.0 {
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:83:9
[INFO] [stderr]    |
[INFO] [stderr] 83 | /         return if l >= i.lambda {
[INFO] [stderr] 84 | |             i.clone()
[INFO] [stderr] 85 | |         } else {
[INFO] [stderr] 86 | |             let n: Vector3d = ray.orig + ray.dir * l - self.center;
[INFO] [stderr] 87 | |             Hit::new(l, n.normalize(), self.color)
[INFO] [stderr] 88 | |         };
[INFO] [stderr]    | |__________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 83 |         if l >= i.lambda {
[INFO] [stderr] 84 |             i.clone()
[INFO] [stderr] 85 |         } else {
[INFO] [stderr] 86 |             let n: Vector3d = ray.orig + ray.dir * l - self.center;
[INFO] [stderr] 87 |             Hit::new(l, n.normalize(), self.color)
[INFO] [stderr] 88 |         }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 | /         return if disc < 0.0 {
[INFO] [stderr] 96 | |             false
[INFO] [stderr] 97 | |         } else {
[INFO] [stderr] 98 | |             b + disc.sqrt() >= 0.0
[INFO] [stderr] 99 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 95 |         if disc < 0.0 {
[INFO] [stderr] 96 |             false
[INFO] [stderr] 97 |         } else {
[INFO] [stderr] 98 |             b + disc.sqrt() >= 0.0
[INFO] [stderr] 99 |         }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:135:9
[INFO] [stderr]     |
[INFO] [stderr] 135 | /         return if l >= i.lambda {
[INFO] [stderr] 136 | |             i.clone()
[INFO] [stderr] 137 | |         } else {
[INFO] [stderr] 138 | |             let mut out: Hit = i.clone();
[INFO] [stderr] ...   |
[INFO] [stderr] 142 | |             out
[INFO] [stderr] 143 | |         };
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 135 |         if l >= i.lambda {
[INFO] [stderr] 136 |             i.clone()
[INFO] [stderr] 137 |         } else {
[INFO] [stderr] 138 |             let mut out: Hit = i.clone();
[INFO] [stderr] 139 |             for scene in &self.objects {
[INFO] [stderr] 140 |                 out = scene.intersect(&out, ray);
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/main.rs:211:5
[INFO] [stderr]     |
[INFO] [stderr] 211 |     return Box::new(Group::new(objects, ZERO));
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Box::new(Group::new(objects, ZERO))`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:84:13
[INFO] [stderr]    |
[INFO] [stderr] 84 |             i.clone()
[INFO] [stderr]    |             ^^^^^^^^^ help: try dereferencing it: `*i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:120:30
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn bounding_box(objects: &Vec<Box<Scene>>) -> (Vector3d, Vector3d) {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^ help: change this to: `&[Box<Scene>]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:136:13
[INFO] [stderr]     |
[INFO] [stderr] 136 |             i.clone()
[INFO] [stderr]     |             ^^^^^^^^^ help: try dereferencing it: `*i`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:138:32
[INFO] [stderr]     |
[INFO] [stderr] 138 |             let mut out: Hit = i.clone();
[INFO] [stderr]     |                                ^^^^^^^^^ help: try dereferencing it: `*i`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:205:50
[INFO] [stderr]     |
[INFO] [stderr] 205 |             let c2: Vector3d = c + Vector3d::new(dx as f64, 1.0, dz as f64) * (rn);
[INFO] [stderr]     |                                                  ^^^^^^^^^ help: try: `f64::from(dx)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:205:66
[INFO] [stderr]     |
[INFO] [stderr] 205 |             let c2: Vector3d = c + Vector3d::new(dx as f64, 1.0, dz as f64) * (rn);
[INFO] [stderr]     |                                                                  ^^^^^^^^^ help: try: `f64::from(dz)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:215:37
[INFO] [stderr]     |
[INFO] [stderr] 215 |     let color_scale: f64 = 255.0 / (ss as f64 * ss as f64);
[INFO] [stderr]     |                                     ^^^^^^^^^ help: try: `f64::from(ss)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:215:49
[INFO] [stderr]     |
[INFO] [stderr] 215 |     let color_scale: f64 = 255.0 / (ss as f64 * ss as f64);
[INFO] [stderr]     |                                                 ^^^^^^^^^ help: try: `f64::from(ss)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:230:25
[INFO] [stderr]     |
[INFO] [stderr] 230 |                         x as f64 + dx as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                         ^^^^^^^^ help: try: `f64::from(x)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:230:36
[INFO] [stderr]     |
[INFO] [stderr] 230 |                         x as f64 + dx as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                                    ^^^^^^^^^ help: try: `f64::from(dx)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:230:48
[INFO] [stderr]     |
[INFO] [stderr] 230 |                         x as f64 + dx as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                                                ^^^^^^^^^ help: try: `f64::from(ss)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:230:60
[INFO] [stderr]     |
[INFO] [stderr] 230 |                         x as f64 + dx as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                                                            ^^^^^^^^ help: try: `f64::from(n)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:231:25
[INFO] [stderr]     |
[INFO] [stderr] 231 |                         y as f64 + dy as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                         ^^^^^^^^ help: try: `f64::from(y)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:231:36
[INFO] [stderr]     |
[INFO] [stderr] 231 |                         y as f64 + dy as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                                    ^^^^^^^^^ help: try: `f64::from(dy)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:231:48
[INFO] [stderr]     |
[INFO] [stderr] 231 |                         y as f64 + dy as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                                                ^^^^^^^^^ help: try: `f64::from(ss)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:231:60
[INFO] [stderr]     |
[INFO] [stderr] 231 |                         y as f64 + dy as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                                                            ^^^^^^^^ help: try: `f64::from(n)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:232:25
[INFO] [stderr]     |
[INFO] [stderr] 232 |                         n as f64
[INFO] [stderr]     |                         ^^^^^^^^ help: try: `f64::from(n)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:84:13
[INFO] [stderr]    |
[INFO] [stderr] 84 |             i.clone()
[INFO] [stderr]    |             ^^^^^^^^^ help: try dereferencing it: `*i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]    --> src/main.rs:120:30
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn bounding_box(objects: &Vec<Box<Scene>>) -> (Vector3d, Vector3d) {
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^ help: change this to: `&[Box<Scene>]`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:136:13
[INFO] [stderr]     |
[INFO] [stderr] 136 |             i.clone()
[INFO] [stderr]     |             ^^^^^^^^^ help: try dereferencing it: `*i`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]    --> src/main.rs:138:32
[INFO] [stderr]     |
[INFO] [stderr] 138 |             let mut out: Hit = i.clone();
[INFO] [stderr]     |                                ^^^^^^^^^ help: try dereferencing it: `*i`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:205:50
[INFO] [stderr]     |
[INFO] [stderr] 205 |             let c2: Vector3d = c + Vector3d::new(dx as f64, 1.0, dz as f64) * (rn);
[INFO] [stderr]     |                                                  ^^^^^^^^^ help: try: `f64::from(dx)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:205:66
[INFO] [stderr]     |
[INFO] [stderr] 205 |             let c2: Vector3d = c + Vector3d::new(dx as f64, 1.0, dz as f64) * (rn);
[INFO] [stderr]     |                                                                  ^^^^^^^^^ help: try: `f64::from(dz)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:215:37
[INFO] [stderr]     |
[INFO] [stderr] 215 |     let color_scale: f64 = 255.0 / (ss as f64 * ss as f64);
[INFO] [stderr]     |                                     ^^^^^^^^^ help: try: `f64::from(ss)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:215:49
[INFO] [stderr]     |
[INFO] [stderr] 215 |     let color_scale: f64 = 255.0 / (ss as f64 * ss as f64);
[INFO] [stderr]     |                                                 ^^^^^^^^^ help: try: `f64::from(ss)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:230:25
[INFO] [stderr]     |
[INFO] [stderr] 230 |                         x as f64 + dx as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                         ^^^^^^^^ help: try: `f64::from(x)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:230:36
[INFO] [stderr]     |
[INFO] [stderr] 230 |                         x as f64 + dx as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                                    ^^^^^^^^^ help: try: `f64::from(dx)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:230:48
[INFO] [stderr]     |
[INFO] [stderr] 230 |                         x as f64 + dx as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                                                ^^^^^^^^^ help: try: `f64::from(ss)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:230:60
[INFO] [stderr]     |
[INFO] [stderr] 230 |                         x as f64 + dx as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                                                            ^^^^^^^^ help: try: `f64::from(n)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:231:25
[INFO] [stderr]     |
[INFO] [stderr] 231 |                         y as f64 + dy as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                         ^^^^^^^^ help: try: `f64::from(y)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:231:36
[INFO] [stderr]     |
[INFO] [stderr] 231 |                         y as f64 + dy as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                                    ^^^^^^^^^ help: try: `f64::from(dy)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:231:48
[INFO] [stderr]     |
[INFO] [stderr] 231 |                         y as f64 + dy as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                                                ^^^^^^^^^ help: try: `f64::from(ss)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:231:60
[INFO] [stderr]     |
[INFO] [stderr] 231 |                         y as f64 + dy as f64 / ss as f64 - n as f64 * 0.5,
[INFO] [stderr]     |                                                            ^^^^^^^^ help: try: `f64::from(n)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:232:25
[INFO] [stderr]     |
[INFO] [stderr] 232 |                         n as f64
[INFO] [stderr]     |                         ^^^^^^^^ help: try: `f64::from(n)`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "f428c05f3cb2e4733f14de1b2135dfe1e4778135fc1840b5ac2ef96b3932ea79"`
[INFO] running `"docker" "rm" "-f" "f428c05f3cb2e4733f14de1b2135dfe1e4778135fc1840b5ac2ef96b3932ea79"`
[INFO] [stdout] f428c05f3cb2e4733f14de1b2135dfe1e4778135fc1840b5ac2ef96b3932ea79