[INFO] updating cached repository hellblade/ray_tracer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hellblade/ray_tracer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hellblade/ray_tracer" "work/ex/clippy-test-run/sources/stable/gh/hellblade/ray_tracer"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/hellblade/ray_tracer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hellblade/ray_tracer" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/hellblade/ray_tracer"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/hellblade/ray_tracer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b23e92848f066d61decbc543d8e514677512cf1d
[INFO] sha for GitHub repo hellblade/ray_tracer: b23e92848f066d61decbc543d8e514677512cf1d
[INFO] validating manifest of hellblade/ray_tracer 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 hellblade/ray_tracer 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 hellblade/ray_tracer
[INFO] finished frobbing hellblade/ray_tracer
[INFO] frobbed toml for hellblade/ray_tracer written to work/ex/clippy-test-run/sources/stable/gh/hellblade/ray_tracer/Cargo.toml
[INFO] started frobbing hellblade/ray_tracer
[INFO] finished frobbing hellblade/ray_tracer
[INFO] frobbed toml for hellblade/ray_tracer written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/hellblade/ray_tracer/Cargo.toml
[INFO] crate hellblade/ray_tracer 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 hellblade/ray_tracer against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/hellblade/ray_tracer:/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" "-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] 5e7f2992873eb23ed39587493371830a66a147efc3c981a5407d9ba343b1ca84
[INFO] running `"docker" "start" "-a" "5e7f2992873eb23ed39587493371830a66a147efc3c981a5407d9ba343b1ca84"`
[INFO] [stderr]    Compiling syn v0.14.8
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking ray_tracer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `math::sphere::float_cmp::ApproxEqUlps`
[INFO] [stderr]  --> src/math/sphere.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use math::sphere::float_cmp::ApproxEqUlps;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::float_cmp::ApproxEqUlps`
[INFO] [stderr]  --> src/math/vector.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use self::float_cmp::ApproxEqUlps;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `math::sphere::float_cmp::ApproxEqUlps`
[INFO] [stderr]  --> src/math/sphere.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use math::sphere::float_cmp::ApproxEqUlps;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self::float_cmp::ApproxEqUlps`
[INFO] [stderr]  --> src/math/vector.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use self::float_cmp::ApproxEqUlps;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `zero`
[INFO] [stderr]    --> src/math/vector.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 137 |     pub fn zero() -> Vector3 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unit_y`
[INFO] [stderr]    --> src/math/vector.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 |     pub fn unit_y() -> Vector3 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unit_z`
[INFO] [stderr]    --> src/math/vector.rs:161:5
[INFO] [stderr]     |
[INFO] [stderr] 161 |     pub fn unit_z() -> Vector3 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]    --> src/math/vector.rs:185:9
[INFO] [stderr]     |
[INFO] [stderr] 185 |         assert_eq!(vec.length(), 1_f32);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(clippy::float_cmp)] on by default
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]    --> src/math/vector.rs:185:9
[INFO] [stderr]     |
[INFO] [stderr] 185 |         assert_eq!(vec.length(), 1_f32);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]    --> src/math/vector.rs:206:9
[INFO] [stderr]     |
[INFO] [stderr] 206 |         assert_eq!(vec.dot(vec), vec.length_squared());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]    --> src/math/vector.rs:206:9
[INFO] [stderr]     |
[INFO] [stderr] 206 |         assert_eq!(vec.dot(vec), vec.length_squared());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[INFO] [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[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:26:25
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn get_nearest(spheres: &Vec<Sphere>, ray: &Ray) -> (bool, f32, Sphere) {
[INFO] [stderr]    |                         ^^^^^^^^^^^^ help: change this to: `&[Sphere]`
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:44:25
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn is_occluded(spheres: &Vec<Sphere>, ray: &Ray, distance_to_light: f32, exclude: &Sphere) -> bool {
[INFO] [stderr]    |                         ^^^^^^^^^^^^ help: change this to: `&[Sphere]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:101:23
[INFO] [stderr]     |
[INFO] [stderr] 101 |                     + ambient_light as f32;
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(ambient_light)`
[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] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `ray_tracer`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: method is never used: `normalise`
[INFO] [stderr]    --> src/math/vector.rs:115:5
[INFO] [stderr]     |
[INFO] [stderr] 115 |     pub fn normalise(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `zero`
[INFO] [stderr]    --> src/math/vector.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 137 |     pub fn zero() -> Vector3 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unit_x`
[INFO] [stderr]    --> src/math/vector.rs:145:5
[INFO] [stderr]     |
[INFO] [stderr] 145 |     pub fn unit_x() -> Vector3 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unit_y`
[INFO] [stderr]    --> src/math/vector.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 |     pub fn unit_y() -> Vector3 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unit_z`
[INFO] [stderr]    --> src/math/vector.rs:161:5
[INFO] [stderr]     |
[INFO] [stderr] 161 |     pub fn unit_z() -> Vector3 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[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:26:25
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn get_nearest(spheres: &Vec<Sphere>, ray: &Ray) -> (bool, f32, Sphere) {
[INFO] [stderr]    |                         ^^^^^^^^^^^^ help: change this to: `&[Sphere]`
[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: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:44:25
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn is_occluded(spheres: &Vec<Sphere>, ray: &Ray, distance_to_light: f32, exclude: &Sphere) -> bool {
[INFO] [stderr]    |                         ^^^^^^^^^^^^ help: change this to: `&[Sphere]`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to f32 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:101:23
[INFO] [stderr]     |
[INFO] [stderr] 101 |                     + ambient_light as f32;
[INFO] [stderr]     |                       ^^^^^^^^^^^^^^^^^^^^ help: try: `f32::from(ambient_light)`
[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] error: build failed
[INFO] running `"docker" "inspect" "5e7f2992873eb23ed39587493371830a66a147efc3c981a5407d9ba343b1ca84"`
[INFO] running `"docker" "rm" "-f" "5e7f2992873eb23ed39587493371830a66a147efc3c981a5407d9ba343b1ca84"`
[INFO] [stdout] 5e7f2992873eb23ed39587493371830a66a147efc3c981a5407d9ba343b1ca84