[INFO] cloning repository https://github.com/jlndk/rust-raytracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jlndk/rust-raytracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjlndk%2Frust-raytracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjlndk%2Frust-raytracer'...
[INFO] [stderr] fatal: write error: No space left on device
[INFO] [stderr] fatal: fetch-pack: invalid index-pack output
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/jlndk/rust-raytracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jlndk/rust-raytracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjlndk%2Frust-raytracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjlndk%2Frust-raytracer'...
[INFO] [stderr] error: unable to write symref for HEAD: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 2)
[INFO] cloning repository https://github.com/jlndk/rust-raytracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jlndk/rust-raytracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjlndk%2Frust-raytracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjlndk%2Frust-raytracer'...
[INFO] [stderr] fatal: write error: No space left on device
[INFO] [stderr] fatal: fetch-pack: invalid index-pack output
[WARN] Retrying crate fetch in 3 seconds (attempt 3)
[INFO] cloning repository https://github.com/jlndk/rust-raytracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jlndk/rust-raytracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjlndk%2Frust-raytracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjlndk%2Frust-raytracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4271cb4aff825f4196e5f497820b938f0716d92c
[INFO] checking jlndk/rust-raytracer against try#5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db for pr-143717
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjlndk%2Frust-raytracer" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jlndk/rust-raytracer
[INFO] finished tweaking git repo https://github.com/jlndk/rust-raytracer
[INFO] tweaked toml for git repo https://github.com/jlndk/rust-raytracer written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jlndk/rust-raytracer on toolchain 5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jlndk/rust-raytracer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c791681b2bedb46683cc4b4b10902c6bd121119875837ea3de0fd1adbb00a790
[INFO] running `Command { std: "docker" "start" "-a" "c791681b2bedb46683cc4b4b10902c6bd121119875837ea3de0fd1adbb00a790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c791681b2bedb46683cc4b4b10902c6bd121119875837ea3de0fd1adbb00a790", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c791681b2bedb46683cc4b4b10902c6bd121119875837ea3de0fd1adbb00a790", kill_on_drop: false }`
[INFO] [stdout] c791681b2bedb46683cc4b4b10902c6bd121119875837ea3de0fd1adbb00a790
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a019bef6a31b46db714b95295330a4ed5a9eb9617c6bfc21bf66771ae827cd9
[INFO] running `Command { std: "docker" "start" "-a" "3a019bef6a31b46db714b95295330a4ed5a9eb9617c6bfc21bf66771ae827cd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking either v1.7.0
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking glam v0.21.3
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking console v0.15.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking term-table v1.3.2
[INFO] [stderr]     Checking indicatif v0.17.0
[INFO] [stderr]     Checking raytracer_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/material.rs:116:21
[INFO] [stdout]     |
[INFO] [stdout] 116 |             true => (1.0 / self.index_of_refraction),
[INFO] [stdout]     |                     ^                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 116 -             true => (1.0 / self.index_of_refraction),
[INFO] [stdout] 116 +             true => 1.0 / self.index_of_refraction,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/material.rs:116:21
[INFO] [stdout]     |
[INFO] [stdout] 116 |             true => (1.0 / self.index_of_refraction),
[INFO] [stdout]     |                     ^                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 116 -             true => (1.0 / self.index_of_refraction),
[INFO] [stdout] 116 +             true => 1.0 / self.index_of_refraction,
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ray_in`
[INFO] [stdout]    --> src/material.rs:155:23
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn scatter(&self, ray_in: &Ray, hit_record: &HitRecord) -> Option<ScatterResult> {
[INFO] [stdout]     |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ray_in`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hit_record`
[INFO] [stdout]    --> src/material.rs:155:37
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn scatter(&self, ray_in: &Ray, hit_record: &HitRecord) -> Option<ScatterResult> {
[INFO] [stdout]     |                                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hit_record`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ray_in`
[INFO] [stdout]    --> src/material.rs:155:23
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn scatter(&self, ray_in: &Ray, hit_record: &HitRecord) -> Option<ScatterResult> {
[INFO] [stdout]     |                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_ray_in`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hit_record`
[INFO] [stdout]    --> src/material.rs:155:37
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn scatter(&self, ray_in: &Ray, hit_record: &HitRecord) -> Option<ScatterResult> {
[INFO] [stdout]     |                                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hit_record`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `front_face` is never read
[INFO] [stdout]   --> src/hittable.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub struct HitRecord<'a> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     pub front_face: bool,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Metal` is never constructed
[INFO] [stdout]   --> src/material.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub struct Metal {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/material.rs:63:18
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl Metal {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 63 |     pub const fn new(albedo: Vec3, fuzz: f32) -> Self {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dielectric` is never constructed
[INFO] [stdout]   --> src/material.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct Dielectric {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `reflectance` are never used
[INFO] [stdout]    --> src/material.rs:95:18
[INFO] [stdout]     |
[INFO] [stdout] 94  | impl Dielectric {
[INFO] [stdout]     | --------------- associated functions in this implementation
[INFO] [stdout] 95  |     pub const fn new(index_of_refraction: f32) -> Self {
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     fn reflectance(cosine: f32, ref_idx: f32) -> f32 {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_scene` is never used
[INFO] [stdout]   --> src/scene.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn random_scene() -> Scene {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_spheres` is never used
[INFO] [stdout]    --> src/scene.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 128 | pub fn random_spheres() -> Scene {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `glowing_sphere` is never used
[INFO] [stdout]    --> src/scene.rs:302:8
[INFO] [stdout]     |
[INFO] [stdout] 302 | pub fn glowing_sphere() -> Scene {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `rand`, `reflect_in`, and `refract_off` are never used
[INFO] [stdout]   --> src/vec3.rs:5:8
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub trait Vec3Extension {
[INFO] [stdout]    |           ------------- associated items in this trait
[INFO] [stdout] 5  |     fn rand() -> Vec3;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn reflect_in(self, n: Vec3) -> Vec3;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 12 |     fn refract_off(self, n: Vec3, etai_over_etat: f32) -> Vec3;
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/hittable.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord>;
[INFO] [stdout]    |            ^^^^^ this lifetime flows to the output             --------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord<'_>>;
[INFO] [stdout]    |                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/hittable_list.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord> {
[INFO] [stdout]    |            ^^^^^ this lifetime flows to the output             --------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord<'_>> {
[INFO] [stdout]    |                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/rect.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord> {
[INFO] [stdout]    |            ^^^^^ this lifetime flows to the output             --------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord<'_>> {
[INFO] [stdout]    |                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/sphere.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord> {
[INFO] [stdout]    |            ^^^^^ this lifetime flows to the output             --------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord<'_>> {
[INFO] [stdout]    |                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `front_face` is never read
[INFO] [stdout]   --> src/hittable.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub struct HitRecord<'a> {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     pub front_face: bool,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Metal` is never constructed
[INFO] [stdout]   --> src/material.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 | pub struct Metal {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/material.rs:63:18
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl Metal {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 63 |     pub const fn new(albedo: Vec3, fuzz: f32) -> Self {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dielectric` is never constructed
[INFO] [stdout]   --> src/material.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub struct Dielectric {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `reflectance` are never used
[INFO] [stdout]    --> src/material.rs:95:18
[INFO] [stdout]     |
[INFO] [stdout] 94  | impl Dielectric {
[INFO] [stdout]     | --------------- associated functions in this implementation
[INFO] [stdout] 95  |     pub const fn new(index_of_refraction: f32) -> Self {
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |     fn reflectance(cosine: f32, ref_idx: f32) -> f32 {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_scene` is never used
[INFO] [stdout]   --> src/scene.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn random_scene() -> Scene {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_spheres` is never used
[INFO] [stdout]    --> src/scene.rs:128:8
[INFO] [stdout]     |
[INFO] [stdout] 128 | pub fn random_spheres() -> Scene {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `glowing_sphere` is never used
[INFO] [stdout]    --> src/scene.rs:302:8
[INFO] [stdout]     |
[INFO] [stdout] 302 | pub fn glowing_sphere() -> Scene {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `rand`, `reflect_in`, and `refract_off` are never used
[INFO] [stdout]   --> src/vec3.rs:5:8
[INFO] [stdout]    |
[INFO] [stdout] 4  | pub trait Vec3Extension {
[INFO] [stdout]    |           ------------- associated items in this trait
[INFO] [stdout] 5  |     fn rand() -> Vec3;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn reflect_in(self, n: Vec3) -> Vec3;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 12 |     fn refract_off(self, n: Vec3, etai_over_etat: f32) -> Vec3;
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/hittable.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord>;
[INFO] [stdout]    |            ^^^^^ this lifetime flows to the output             --------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord<'_>>;
[INFO] [stdout]    |                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/hittable_list.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord> {
[INFO] [stdout]    |            ^^^^^ this lifetime flows to the output             --------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord<'_>> {
[INFO] [stdout]    |                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/rect.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord> {
[INFO] [stdout]    |            ^^^^^ this lifetime flows to the output             --------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord<'_>> {
[INFO] [stdout]    |                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/sphere.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord> {
[INFO] [stdout]    |            ^^^^^ this lifetime flows to the output             --------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn hit(&self, ray: &Ray, t_min: f32, t_max: f32) -> Option<HitRecord<'_>> {
[INFO] [stdout]    |                                                                         ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.68s
[INFO] running `Command { std: "docker" "inspect" "3a019bef6a31b46db714b95295330a4ed5a9eb9617c6bfc21bf66771ae827cd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a019bef6a31b46db714b95295330a4ed5a9eb9617c6bfc21bf66771ae827cd9", kill_on_drop: false }`
[INFO] [stdout] 3a019bef6a31b46db714b95295330a4ed5a9eb9617c6bfc21bf66771ae827cd9
