[INFO] cloning repository https://github.com/MemeSlayer27/raytracer_project
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MemeSlayer27/raytracer_project" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMemeSlayer27%2Fraytracer_project", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMemeSlayer27%2Fraytracer_project'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ebfeb88d9ef6f12cea446b3b77dbd6286fa36c7
[INFO] checking MemeSlayer27/raytracer_project against try#b4c55082edd8dec08ce8af276d7054d9c4db20c4 for pr-147984
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMemeSlayer27%2Fraytracer_project" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MemeSlayer27/raytracer_project
[INFO] finished tweaking git repo https://github.com/MemeSlayer27/raytracer_project
[INFO] tweaked toml for git repo https://github.com/MemeSlayer27/raytracer_project written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MemeSlayer27/raytracer_project on toolchain b4c55082edd8dec08ce8af276d7054d9c4db20c4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MemeSlayer27/raytracer_project 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" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] deb7d89b39150506192718a5e1d886e443d4cf467fb6547b6aa195900c870a56
[INFO] running `Command { std: "docker" "start" "-a" "deb7d89b39150506192718a5e1d886e443d4cf467fb6547b6aa195900c870a56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "deb7d89b39150506192718a5e1d886e443d4cf467fb6547b6aa195900c870a56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "deb7d89b39150506192718a5e1d886e443d4cf467fb6547b6aa195900c870a56", kill_on_drop: false }`
[INFO] [stdout] deb7d89b39150506192718a5e1d886e443d4cf467fb6547b6aa195900c870a56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0eed2dbe91f0d00c13877ec944232fe5bec90a47c1cd073561f7e256d3789d1c
[INFO] running `Command { std: "docker" "start" "-a" "0eed2dbe91f0d00c13877ec944232fe5bec90a47c1cd073561f7e256d3789d1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]     Checking getrandom v0.2.7
[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 raytracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `format`, `i64::MIN`, `min_by_key`, `min_by`, and `process::Output`
[INFO] [stdout]  --> src/vec3.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ops, process::Output, fmt::{format, Debug}, i64::MIN, cmp::{min_by, min_by_key}};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^        ^^^^^^          ^^^^^^^^        ^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ray.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::vec3::{self, Point3, Vec3};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `borrow::BorrowMut`, `cell::RefCell`, `clone`, and `ops::Deref`
[INFO] [stdout]  --> src/sphere.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{rc::Rc, clone, cell::RefCell, ops::Deref, borrow::BorrowMut};
[INFO] [stdout]   |                   ^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Vec3`, `ray`, and `self`
[INFO] [stdout]  --> src/sphere.rs:3:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{vec3::{Point3, Vec3, dot}, ray, material::{Material, self}};
[INFO] [stdout]   |                            ^^^^        ^^^                       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `RefCell`, `RefMut`, and `str::MatchIndices`
[INFO] [stdout]  --> src/hittable.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{str::MatchIndices, rc::Rc, cell::{RefCell, RefMut},};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^                 ^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Material`
[INFO] [stdout]  --> src/hittable_list.rs:6:23
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::material::{Material, Lambertian};
[INFO] [stdout]   |                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::DerefMut`
[INFO] [stdout]  --> src/material.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::DerefMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `random`
[INFO] [stdout]  --> src/material.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::{random, Rng};
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `color`
[INFO] [stdout]  --> src/material.rs:5:58
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::{hittable::HitRecord, ray::Ray, vec3::{Color, color, Vec3, reflect, dot, refract}};
[INFO] [stdout]   |                                                          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `format`, `i64::MIN`, `min_by_key`, `min_by`, and `process::Output`
[INFO] [stdout]  --> src/vec3.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{ops, process::Output, fmt::{format, Debug}, i64::MIN, cmp::{min_by, min_by_key}};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^        ^^^^^^          ^^^^^^^^        ^^^^^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/ray.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::vec3::{self, Point3, Vec3};
[INFO] [stdout]   |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `borrow::BorrowMut`, `cell::RefCell`, `clone`, and `ops::Deref`
[INFO] [stdout]  --> src/sphere.rs:1:19
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{rc::Rc, clone, cell::RefCell, ops::Deref, borrow::BorrowMut};
[INFO] [stdout]   |                   ^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Vec3`, `ray`, and `self`
[INFO] [stdout]  --> src/sphere.rs:3:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{vec3::{Point3, Vec3, dot}, ray, material::{Material, self}};
[INFO] [stdout]   |                            ^^^^        ^^^                       ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `RefCell`, `RefMut`, and `str::MatchIndices`
[INFO] [stdout]  --> src/hittable.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{str::MatchIndices, rc::Rc, cell::{RefCell, RefMut},};
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^                 ^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Material`
[INFO] [stdout]  --> src/hittable_list.rs:6:23
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::material::{Material, Lambertian};
[INFO] [stdout]   |                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::DerefMut`
[INFO] [stdout]  --> src/material.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ops::DerefMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `random`
[INFO] [stdout]  --> src/material.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::{random, Rng};
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `color`
[INFO] [stdout]  --> src/material.rs:5:58
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::{hittable::HitRecord, ray::Ray, vec3::{Color, color, Vec3, reflect, dot, refract}};
[INFO] [stdout]   |                                                          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sphere.rs:15:52
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, mut rec: &mut HitRecord) -> bool {
[INFO] [stdout]    |                                                    ----^^^
[INFO] [stdout]    |                                                    |
[INFO] [stdout]    |                                                    help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hittable_list.rs:23:52
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, mut rec: &mut HitRecord) -> bool {
[INFO] [stdout]    |                                                    ----^^^
[INFO] [stdout]    |                                                    |
[INFO] [stdout]    |                                                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/material.rs:19:52
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn scatter(&self, r_in: &Ray, rec: &HitRecord, mut attenuation: &mut Color, mut scattered: &mut Ray) -> bool {
[INFO] [stdout]    |                                                    ----^^^^^^^^^^^
[INFO] [stdout]    |                                                    |
[INFO] [stdout]    |                                                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/material.rs:19:81
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn scatter(&self, r_in: &Ray, rec: &HitRecord, mut attenuation: &mut Color, mut scattered: &mut Ray) -> bool {
[INFO] [stdout]    |                                                                                 ----^^^^^^^^^
[INFO] [stdout]    |                                                                                 |
[INFO] [stdout]    |                                                                                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r_in`
[INFO] [stdout]   --> src/material.rs:19:23
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn scatter(&self, r_in: &Ray, rec: &HitRecord, mut attenuation: &mut Color, mut scattered: &mut Ray) -> bool {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_r_in`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/material.rs:54:52
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn scatter(&self, r_in: &Ray, rec: &HitRecord, mut attenuation: &mut Color, mut scattered: &mut Ray) -> bool{
[INFO] [stdout]    |                                                    ----^^^^^^^^^^^
[INFO] [stdout]    |                                                    |
[INFO] [stdout]    |                                                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/material.rs:54:81
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn scatter(&self, r_in: &Ray, rec: &HitRecord, mut attenuation: &mut Color, mut scattered: &mut Ray) -> bool{
[INFO] [stdout]    |                                                                                 ----^^^^^^^^^
[INFO] [stdout]    |                                                                                 |
[INFO] [stdout]    |                                                                                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/material.rs:83:52
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn scatter(&self, r_in: &Ray, rec: &HitRecord, mut attenuation: &mut Color, mut scattered: &mut Ray) -> bool {
[INFO] [stdout]    |                                                    ----^^^^^^^^^^^
[INFO] [stdout]    |                                                    |
[INFO] [stdout]    |                                                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/material.rs:83:81
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn scatter(&self, r_in: &Ray, rec: &HitRecord, mut attenuation: &mut Color, mut scattered: &mut Ray) -> bool {
[INFO] [stdout]    |                                                                                 ----^^^^^^^^^
[INFO] [stdout]    |                                                                                 |
[INFO] [stdout]    |                                                                                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sphere.rs:15:52
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, mut rec: &mut HitRecord) -> bool {
[INFO] [stdout]    |                                                    ----^^^
[INFO] [stdout]    |                                                    |
[INFO] [stdout]    |                                                    help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/hittable_list.rs:23:52
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, mut rec: &mut HitRecord) -> bool {
[INFO] [stdout]    |                                                    ----^^^
[INFO] [stdout]    |                                                    |
[INFO] [stdout]    |                                                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/material.rs:19:52
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn scatter(&self, r_in: &Ray, rec: &HitRecord, mut attenuation: &mut Color, mut scattered: &mut Ray) -> bool {
[INFO] [stdout]    |                                                    ----^^^^^^^^^^^
[INFO] [stdout]    |                                                    |
[INFO] [stdout]    |                                                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/material.rs:19:81
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn scatter(&self, r_in: &Ray, rec: &HitRecord, mut attenuation: &mut Color, mut scattered: &mut Ray) -> bool {
[INFO] [stdout]    |                                                                                 ----^^^^^^^^^
[INFO] [stdout]    |                                                                                 |
[INFO] [stdout]    |                                                                                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r_in`
[INFO] [stdout]   --> src/material.rs:19:23
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn scatter(&self, r_in: &Ray, rec: &HitRecord, mut attenuation: &mut Color, mut scattered: &mut Ray) -> bool {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_r_in`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/material.rs:54:52
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn scatter(&self, r_in: &Ray, rec: &HitRecord, mut attenuation: &mut Color, mut scattered: &mut Ray) -> bool{
[INFO] [stdout]    |                                                    ----^^^^^^^^^^^
[INFO] [stdout]    |                                                    |
[INFO] [stdout]    |                                                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_format` is never used
[INFO] [stdout]   --> src/vec3.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Vec3 {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn print_format(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/material.rs:54:81
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn scatter(&self, r_in: &Ray, rec: &HitRecord, mut attenuation: &mut Color, mut scattered: &mut Ray) -> bool{
[INFO] [stdout]    |                                                                                 ----^^^^^^^^^
[INFO] [stdout]    |                                                                                 |
[INFO] [stdout]    |                                                                                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cross` is never used
[INFO] [stdout]    --> src/vec3.rs:179:8
[INFO] [stdout]     |
[INFO] [stdout] 174 | impl Vec3 {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 179 |     fn cross(&self, v: Vec3) -> Vec3 {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/material.rs:83:52
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn scatter(&self, r_in: &Ray, rec: &HitRecord, mut attenuation: &mut Color, mut scattered: &mut Ray) -> bool {
[INFO] [stdout]    |                                                    ----^^^^^^^^^^^
[INFO] [stdout]    |                                                    |
[INFO] [stdout]    |                                                    help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/material.rs:83:81
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn scatter(&self, r_in: &Ray, rec: &HitRecord, mut attenuation: &mut Color, mut scattered: &mut Ray) -> bool {
[INFO] [stdout]    |                                                                                 ----^^^^^^^^^
[INFO] [stdout]    |                                                                                 |
[INFO] [stdout]    |                                                                                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_format` is never used
[INFO] [stdout]   --> src/vec3.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Vec3 {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn print_format(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cross` is never used
[INFO] [stdout]    --> src/vec3.rs:179:8
[INFO] [stdout]     |
[INFO] [stdout] 174 | impl Vec3 {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 179 |     fn cross(&self, v: Vec3) -> Vec3 {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "0eed2dbe91f0d00c13877ec944232fe5bec90a47c1cd073561f7e256d3789d1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eed2dbe91f0d00c13877ec944232fe5bec90a47c1cd073561f7e256d3789d1c", kill_on_drop: false }`
[INFO] [stdout] 0eed2dbe91f0d00c13877ec944232fe5bec90a47c1cd073561f7e256d3789d1c
