[INFO] cloning repository https://github.com/johnshiver/ray_tracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnshiver/ray_tracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnshiver%2Fray_tracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnshiver%2Fray_tracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 80ccff7f05fc4300439ecca9cf2ca7f99b48bd62
[INFO] checking johnshiver/ray_tracer against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnshiver%2Fray_tracer" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnshiver/ray_tracer on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/johnshiver/ray_tracer
[INFO] finished tweaking git repo https://github.com/johnshiver/ray_tracer
[INFO] tweaked toml for git repo https://github.com/johnshiver/ray_tracer written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/johnshiver/ray_tracer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7835e15cba152274e32e5fe28c9b8492afa6c9c164bae9e86a2b3b0b5afad66
[INFO] running `Command { std: "docker" "start" "-a" "b7835e15cba152274e32e5fe28c9b8492afa6c9c164bae9e86a2b3b0b5afad66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7835e15cba152274e32e5fe28c9b8492afa6c9c164bae9e86a2b3b0b5afad66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7835e15cba152274e32e5fe28c9b8492afa6c9c164bae9e86a2b3b0b5afad66", kill_on_drop: false }`
[INFO] [stdout] b7835e15cba152274e32e5fe28c9b8492afa6c9c164bae9e86a2b3b0b5afad66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 999ecdb4e17c63d725312955f8af81230f7afc0ec991c4b0315b7287c00133c1
[INFO] running `Command { std: "docker" "start" "-a" "999ecdb4e17c63d725312955f8af81230f7afc0ec991c4b0315b7287c00133c1", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]    Compiling num-traits v0.2.9
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking ray_tracer v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/rays.rs (7 fixes)
[INFO] [stderr]        Fixed src/matrix.rs (1 fix)
[INFO] [stdout] warning: associated function is never used: `get_pixel`
[INFO] [stdout]   --> src/canvas.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn get_pixel(&self, x: usize, y: usize) -> Option<Color> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `gravity`
[INFO] [stdout]  --> src/environment.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     gravity: Tuple, // vector
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `wind`
[INFO] [stdout]  --> src/environment.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     wind: Tuple,    // vector
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_environment`
[INFO] [stdout]   --> src/environment.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn new_environment(gravity: Tuple, wind: Tuple) -> Environment {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tick`
[INFO] [stdout]   --> src/environment.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn tick(env: Environment, projectile: Projectile) -> Projectile {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `transpose`
[INFO] [stdout]    --> src/matrix.rs:114:8
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub fn transpose(m: M4x4) -> M4x4 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `submatrix_4x4`
[INFO] [stdout]    --> src/matrix.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 124 | pub fn submatrix_4x4(matrix: &M4x4, row: usize, col: usize) -> M3x3 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `minor_4x4`
[INFO] [stdout]    --> src/matrix.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 | pub fn minor_4x4(matrix: &M4x4, row: usize, col: usize) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cofactor_4x4`
[INFO] [stdout]    --> src/matrix.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 150 | pub fn cofactor_4x4(matrix: &M4x4, row: usize, col: usize) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `determinant_4x4`
[INFO] [stdout]    --> src/matrix.rs:158:8
[INFO] [stdout]     |
[INFO] [stdout] 158 | pub fn determinant_4x4(matrix: &M4x4) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `invertible_4x4`
[INFO] [stdout]    --> src/matrix.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 166 | pub fn invertible_4x4(matrix: &M4x4) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/matrix.rs:180:8
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn new(msg: &str) -> MatrixNotInvertibleError {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `invert_4x4`
[INFO] [stdout]    --> src/matrix.rs:205:8
[INFO] [stdout]     |
[INFO] [stdout] 205 | pub fn invert_4x4(matrix: &M4x4) -> Result<M4x4, MatrixNotInvertibleError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_3x3`
[INFO] [stdout]    --> src/matrix.rs:254:8
[INFO] [stdout]     |
[INFO] [stdout] 254 | pub fn new_3x3(matrix: [[f64; 3]; 3]) -> M3x3 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `submatrix_3x3`
[INFO] [stdout]    --> src/matrix.rs:258:8
[INFO] [stdout]     |
[INFO] [stdout] 258 | pub fn submatrix_3x3(matrix: &M3x3, row: usize, col: usize) -> M2x2 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `minor_3x3`
[INFO] [stdout]    --> src/matrix.rs:280:8
[INFO] [stdout]     |
[INFO] [stdout] 280 | pub fn minor_3x3(matrix: &M3x3, row: usize, col: usize) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cofactor_3x3`
[INFO] [stdout]    --> src/matrix.rs:284:8
[INFO] [stdout]     |
[INFO] [stdout] 284 | pub fn cofactor_3x3(matrix: &M3x3, row: usize, col: usize) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `determinant_3x3`
[INFO] [stdout]    --> src/matrix.rs:292:8
[INFO] [stdout]     |
[INFO] [stdout] 292 | pub fn determinant_3x3(matrix: &M3x3) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_2x2`
[INFO] [stdout]    --> src/matrix.rs:333:8
[INFO] [stdout]     |
[INFO] [stdout] 333 | pub fn new_2x2(matrix: [[f64; 2]; 2]) -> M2x2 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `determinant_2x2`
[INFO] [stdout]    --> src/matrix.rs:337:8
[INFO] [stdout]     |
[INFO] [stdout] 337 | pub fn determinant_2x2(m: M2x2) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `translation`
[INFO] [stdout]  --> src/matrix_transformations.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn translation(x: f64, y: f64, z: f64) -> M4x4 {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `scaling`
[INFO] [stdout]   --> src/matrix_transformations.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn scaling(x: f64, y: f64, z: f64) -> M4x4 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rotation_x`
[INFO] [stdout]   --> src/matrix_transformations.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn rotation_x(radians: f64) -> M4x4 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rotation_z`
[INFO] [stdout]   --> src/matrix_transformations.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn rotation_z(radians: f64) -> M4x4 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shearing`
[INFO] [stdout]   --> src/matrix_transformations.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn shearing(xy: f64, xx: f64, yx: f64, yz: f64, zx: f64, zy: f64) -> M4x4 {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_projectile`
[INFO] [stdout]   --> src/projectile.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn new_projectile(position: Tuple, velocity: Tuple) -> Projectile {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_vector`
[INFO] [stdout]   --> src/tuple.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn new_vector(x: f64, y: f64, z: f64) -> Tuple {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_point`
[INFO] [stdout]    --> src/tuple.rs:122:12
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn is_point(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_unit_vector`
[INFO] [stdout]    --> src/tuple.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout] 134 |     pub fn is_unit_vector(&self) -> Result<bool, TupleTypeError> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/tuple.rs:157:12
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub fn new(msg: &str) -> TupleTypeError {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `magnitude`
[INFO] [stdout]    --> src/tuple.rs:184:8
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub fn magnitude(vector: Tuple) -> Result<f64, TupleTypeError> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `normalize`
[INFO] [stdout]    --> src/tuple.rs:195:8
[INFO] [stdout]     |
[INFO] [stdout] 195 | pub fn normalize(vector: Tuple) -> Result<Tuple, TupleTypeError> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dot`
[INFO] [stdout]    --> src/tuple.rs:217:8
[INFO] [stdout]     |
[INFO] [stdout] 217 | pub fn dot(vec_a: Tuple, vec_b: Tuple) -> Result<f64, TupleTypeError> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cross`
[INFO] [stdout]    --> src/tuple.rs:227:4
[INFO] [stdout]     |
[INFO] [stdout] 227 | fn cross(vec_a: Tuple, vec_b: Tuple) -> Result<Tuple, TupleTypeError> {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SPHERE_ORIGIN`
[INFO] [stdout]   --> src/rays.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | / pub const SPHERE_ORIGIN: Tuple = Tuple {
[INFO] [stdout] 11 | |     x: 0.0,
[INFO] [stdout] 12 | |     y: 0.0,
[INFO] [stdout] 13 | |     z: 0.0,
[INFO] [stdout] 14 | |     w: 1.0,
[INFO] [stdout] 15 | | }; // is a point
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_ray`
[INFO] [stdout]   --> src/rays.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn new_ray(origin: Tuple, direction: Tuple) -> Result<Ray, TupleTypeError> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `position`
[INFO] [stdout]   --> src/rays.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn position(r: &Ray, time: f64) -> Tuple {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_sphere`
[INFO] [stdout]   --> src/rays.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn new_sphere() -> Sphere {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_intersection`
[INFO] [stdout]   --> src/rays.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn new_intersection(t: f64, object: Sphere) -> Intersection<Sphere> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `count`
[INFO] [stdout]   --> src/rays.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     count: i64,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `intersections`
[INFO] [stdout]   --> src/rays.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn intersections(items: Vec<Intersection<Sphere>>, count: i64) -> Intersections<Sphere> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `discriminant`
[INFO] [stdout]   --> src/rays.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub fn discriminant(r: &Ray) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `intersect`
[INFO] [stdout]    --> src/rays.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn intersect(r: &Ray, s: Sphere) -> Intersections<Sphere> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hit`
[INFO] [stdout]    --> src/rays.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 | pub fn hit(xs: Intersections<Sphere>) -> Option<Intersection<Sphere>> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_test_image`
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn create_test_image() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simulate_projectile`
[INFO] [stdout]   --> src/main.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn simulate_projectile() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     canvas.to_ppm("test_ppm.ppm");
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     c.to_ppm("rocket_shot.ppm");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     c.to_ppm("analog_clock.ppm");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 49 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed src/tuple.rs (10 fixes)
[INFO] [stderr]        Fixed src/matrix.rs (1 fix)
[INFO] [stdout] warning: field is never read: `gravity`
[INFO] [stdout]  --> src/environment.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     gravity: Tuple, // vector
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `wind`
[INFO] [stdout]  --> src/environment.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     wind: Tuple,    // vector
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_environment`
[INFO] [stdout]   --> src/environment.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn new_environment(gravity: Tuple, wind: Tuple) -> Environment {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tick`
[INFO] [stdout]   --> src/environment.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn tick(env: Environment, projectile: Projectile) -> Projectile {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_projectile`
[INFO] [stdout]   --> src/projectile.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn new_projectile(position: Tuple, velocity: Tuple) -> Projectile {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_test_image`
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn create_test_image() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simulate_projectile`
[INFO] [stdout]   --> src/main.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn simulate_projectile() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     canvas.to_ppm("test_ppm.ppm");
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     c.to_ppm("rocket_shot.ppm");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     c.to_ppm("analog_clock.ppm");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.42s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking ray_tracer v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: associated function is never used: `get_pixel`
[INFO] [stdout]   --> src/canvas.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn get_pixel(&self, x: usize, y: usize) -> Option<Color> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `gravity`
[INFO] [stdout]  --> src/environment.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     gravity: Tuple, // vector
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `wind`
[INFO] [stdout]  --> src/environment.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     wind: Tuple,    // vector
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_environment`
[INFO] [stdout]   --> src/environment.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn new_environment(gravity: Tuple, wind: Tuple) -> Environment {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tick`
[INFO] [stdout]   --> src/environment.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn tick(env: Environment, projectile: Projectile) -> Projectile {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `transpose`
[INFO] [stdout]    --> src/matrix.rs:114:8
[INFO] [stdout]     |
[INFO] [stdout] 114 | pub fn transpose(m: M4x4) -> M4x4 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `submatrix_4x4`
[INFO] [stdout]    --> src/matrix.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 124 | pub fn submatrix_4x4(matrix: &M4x4, row: usize, col: usize) -> M3x3 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `minor_4x4`
[INFO] [stdout]    --> src/matrix.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 146 | pub fn minor_4x4(matrix: &M4x4, row: usize, col: usize) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cofactor_4x4`
[INFO] [stdout]    --> src/matrix.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 150 | pub fn cofactor_4x4(matrix: &M4x4, row: usize, col: usize) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `determinant_4x4`
[INFO] [stdout]    --> src/matrix.rs:158:8
[INFO] [stdout]     |
[INFO] [stdout] 158 | pub fn determinant_4x4(matrix: &M4x4) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `invertible_4x4`
[INFO] [stdout]    --> src/matrix.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 166 | pub fn invertible_4x4(matrix: &M4x4) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/matrix.rs:180:8
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fn new(msg: &str) -> MatrixNotInvertibleError {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `invert_4x4`
[INFO] [stdout]    --> src/matrix.rs:205:8
[INFO] [stdout]     |
[INFO] [stdout] 205 | pub fn invert_4x4(matrix: &M4x4) -> Result<M4x4, MatrixNotInvertibleError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_3x3`
[INFO] [stdout]    --> src/matrix.rs:254:8
[INFO] [stdout]     |
[INFO] [stdout] 254 | pub fn new_3x3(matrix: [[f64; 3]; 3]) -> M3x3 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `submatrix_3x3`
[INFO] [stdout]    --> src/matrix.rs:258:8
[INFO] [stdout]     |
[INFO] [stdout] 258 | pub fn submatrix_3x3(matrix: &M3x3, row: usize, col: usize) -> M2x2 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `minor_3x3`
[INFO] [stdout]    --> src/matrix.rs:280:8
[INFO] [stdout]     |
[INFO] [stdout] 280 | pub fn minor_3x3(matrix: &M3x3, row: usize, col: usize) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cofactor_3x3`
[INFO] [stdout]    --> src/matrix.rs:284:8
[INFO] [stdout]     |
[INFO] [stdout] 284 | pub fn cofactor_3x3(matrix: &M3x3, row: usize, col: usize) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `determinant_3x3`
[INFO] [stdout]    --> src/matrix.rs:292:8
[INFO] [stdout]     |
[INFO] [stdout] 292 | pub fn determinant_3x3(matrix: &M3x3) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_2x2`
[INFO] [stdout]    --> src/matrix.rs:333:8
[INFO] [stdout]     |
[INFO] [stdout] 333 | pub fn new_2x2(matrix: [[f64; 2]; 2]) -> M2x2 {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `determinant_2x2`
[INFO] [stdout]    --> src/matrix.rs:337:8
[INFO] [stdout]     |
[INFO] [stdout] 337 | pub fn determinant_2x2(m: M2x2) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `translation`
[INFO] [stdout]  --> src/matrix_transformations.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn translation(x: f64, y: f64, z: f64) -> M4x4 {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `scaling`
[INFO] [stdout]   --> src/matrix_transformations.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn scaling(x: f64, y: f64, z: f64) -> M4x4 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rotation_x`
[INFO] [stdout]   --> src/matrix_transformations.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub fn rotation_x(radians: f64) -> M4x4 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rotation_z`
[INFO] [stdout]   --> src/matrix_transformations.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn rotation_z(radians: f64) -> M4x4 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shearing`
[INFO] [stdout]   --> src/matrix_transformations.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn shearing(xy: f64, xx: f64, yx: f64, yz: f64, zx: f64, zy: f64) -> M4x4 {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_projectile`
[INFO] [stdout]   --> src/projectile.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn new_projectile(position: Tuple, velocity: Tuple) -> Projectile {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_vector`
[INFO] [stdout]   --> src/tuple.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn new_vector(x: f64, y: f64, z: f64) -> Tuple {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_point`
[INFO] [stdout]    --> src/tuple.rs:122:12
[INFO] [stdout]     |
[INFO] [stdout] 122 |     pub fn is_point(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_unit_vector`
[INFO] [stdout]    --> src/tuple.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout] 134 |     pub fn is_unit_vector(&self) -> Result<bool, TupleTypeError> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/tuple.rs:157:12
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub fn new(msg: &str) -> TupleTypeError {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `magnitude`
[INFO] [stdout]    --> src/tuple.rs:184:8
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub fn magnitude(vector: Tuple) -> Result<f64, TupleTypeError> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `normalize`
[INFO] [stdout]    --> src/tuple.rs:195:8
[INFO] [stdout]     |
[INFO] [stdout] 195 | pub fn normalize(vector: Tuple) -> Result<Tuple, TupleTypeError> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dot`
[INFO] [stdout]    --> src/tuple.rs:217:8
[INFO] [stdout]     |
[INFO] [stdout] 217 | pub fn dot(vec_a: Tuple, vec_b: Tuple) -> Result<f64, TupleTypeError> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cross`
[INFO] [stdout]    --> src/tuple.rs:227:4
[INFO] [stdout]     |
[INFO] [stdout] 227 | fn cross(vec_a: Tuple, vec_b: Tuple) -> Result<Tuple, TupleTypeError> {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SPHERE_ORIGIN`
[INFO] [stdout]   --> src/rays.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | / pub const SPHERE_ORIGIN: Tuple = Tuple {
[INFO] [stdout] 11 | |     x: 0.0,
[INFO] [stdout] 12 | |     y: 0.0,
[INFO] [stdout] 13 | |     z: 0.0,
[INFO] [stdout] 14 | |     w: 1.0,
[INFO] [stdout] 15 | | }; // is a point
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_ray`
[INFO] [stdout]   --> src/rays.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn new_ray(origin: Tuple, direction: Tuple) -> Result<Ray, TupleTypeError> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `position`
[INFO] [stdout]   --> src/rays.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn position(r: &Ray, time: f64) -> Tuple {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_sphere`
[INFO] [stdout]   --> src/rays.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn new_sphere() -> Sphere {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_intersection`
[INFO] [stdout]   --> src/rays.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 73 | pub fn new_intersection(t: f64, object: Sphere) -> Intersection<Sphere> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `count`
[INFO] [stdout]   --> src/rays.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     count: i64,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `intersections`
[INFO] [stdout]   --> src/rays.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn intersections(items: Vec<Intersection<Sphere>>, count: i64) -> Intersections<Sphere> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `discriminant`
[INFO] [stdout]   --> src/rays.rs:93:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub fn discriminant(r: &Ray) -> f64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `intersect`
[INFO] [stdout]    --> src/rays.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 | pub fn intersect(r: &Ray, s: Sphere) -> Intersections<Sphere> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hit`
[INFO] [stdout]    --> src/rays.rs:125:8
[INFO] [stdout]     |
[INFO] [stdout] 125 | pub fn hit(xs: Intersections<Sphere>) -> Option<Intersection<Sphere>> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_test_image`
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn create_test_image() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simulate_projectile`
[INFO] [stdout]   --> src/main.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn simulate_projectile() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     canvas.to_ppm("test_ppm.ppm");
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     c.to_ppm("rocket_shot.ppm");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     c.to_ppm("analog_clock.ppm");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 49 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `gravity`
[INFO] [stdout]  --> src/environment.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     gravity: Tuple, // vector
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `wind`
[INFO] [stdout]  --> src/environment.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     wind: Tuple,    // vector
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_environment`
[INFO] [stdout]   --> src/environment.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn new_environment(gravity: Tuple, wind: Tuple) -> Environment {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tick`
[INFO] [stdout]   --> src/environment.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn tick(env: Environment, projectile: Projectile) -> Projectile {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new_projectile`
[INFO] [stdout]   --> src/projectile.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn new_projectile(position: Tuple, velocity: Tuple) -> Projectile {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_test_image`
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn create_test_image() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simulate_projectile`
[INFO] [stdout]   --> src/main.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn simulate_projectile() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     canvas.to_ppm("test_ppm.ppm");
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:67:5
[INFO] [stdout]    |
[INFO] [stdout] 67 |     c.to_ppm("rocket_shot.ppm");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:90:5
[INFO] [stdout]    |
[INFO] [stdout] 90 |     c.to_ppm("analog_clock.ppm");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `Command { std: "docker" "inspect" "999ecdb4e17c63d725312955f8af81230f7afc0ec991c4b0315b7287c00133c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "999ecdb4e17c63d725312955f8af81230f7afc0ec991c4b0315b7287c00133c1", kill_on_drop: false }`
[INFO] [stdout] 999ecdb4e17c63d725312955f8af81230f7afc0ec991c4b0315b7287c00133c1