[INFO] cloning repository https://github.com/aidenbenner/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/aidenbenner/rust-raytracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faidenbenner%2Frust-raytracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faidenbenner%2Frust-raytracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ba58757f398adc19cfc9ff22713991c91000772
[INFO] checking aidenbenner/rust-raytracer against 65b20a97de33e9e59992793a144aef2950c48c76 for pr-154715
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faidenbenner%2Frust-raytracer" "/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/aidenbenner/rust-raytracer
[INFO] finished tweaking git repo https://github.com/aidenbenner/rust-raytracer
[INFO] tweaked toml for git repo https://github.com/aidenbenner/rust-raytracer written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/aidenbenner/rust-raytracer on toolchain 65b20a97de33e9e59992793a144aef2950c48c76
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+65b20a97de33e9e59992793a144aef2950c48c76" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/aidenbenner/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" "+65b20a97de33e9e59992793a144aef2950c48c76" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num_cpus v1.13.0
[INFO] [stderr]   Downloaded hermit-abi v0.1.18
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[INFO] [stderr]   Downloaded libc v0.2.94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:00c5645b54fe3ce5dae1417175e3c7fb6a6646c021d554ecd63a097b8b9f3602" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 686636d56a7b26124dfd74801a1ab3fc54a9b92885fc02d4aae20fa0dc9df834
[INFO] running `Command { std: "docker" "start" "686636d56a7b26124dfd74801a1ab3fc54a9b92885fc02d4aae20fa0dc9df834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "686636d56a7b26124dfd74801a1ab3fc54a9b92885fc02d4aae20fa0dc9df834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "686636d56a7b26124dfd74801a1ab3fc54a9b92885fc02d4aae20fa0dc9df834" "/opt/rustwide/cargo-home/bin/cargo" "+65b20a97de33e9e59992793a144aef2950c48c76" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "686636d56a7b26124dfd74801a1ab3fc54a9b92885fc02d4aae20fa0dc9df834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "686636d56a7b26124dfd74801a1ab3fc54a9b92885fc02d4aae20fa0dc9df834" "/opt/rustwide/cargo-home/bin/cargo" "+65b20a97de33e9e59992793a144aef2950c48c76" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking raytracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/main.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{anyhow, Result};
[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: `rc::Rc`
[INFO] [stdout]  --> src/main.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{fs::File, rc::Rc, sync::Arc};
[INFO] [stdout]   |                     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::object::*`
[INFO] [stdout]  --> src/material.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::object::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `rc::Rc` and `str::MatchIndices`
[INFO] [stdout]  --> src/object.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{rc::Rc, str::MatchIndices};
[INFO] [stdout]   |           ^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::material::*`
[INFO] [stdout]  --> src/object.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::material::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `object::Object`
[INFO] [stdout]  --> src/bounding_box.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{object::Object};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/main.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow::{anyhow, Result};
[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: `rc::Rc`
[INFO] [stdout]  --> src/main.rs:7:21
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{fs::File, rc::Rc, sync::Arc};
[INFO] [stdout]   |                     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::object::*`
[INFO] [stdout]  --> src/material.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::object::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `rc::Rc` and `str::MatchIndices`
[INFO] [stdout]  --> src/object.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{rc::Rc, str::MatchIndices};
[INFO] [stdout]   |           ^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::material::*`
[INFO] [stdout]  --> src/object.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::material::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `object::Object`
[INFO] [stdout]  --> src/bounding_box.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{object::Object};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:184:22
[INFO] [stdout]     |
[INFO] [stdout] 184 |     objects: Vec<Box<Object>>,
[INFO] [stdout]     |                      ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 184 |     objects: Vec<Box<dyn Object>>,
[INFO] [stdout]     |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:184:22
[INFO] [stdout]     |
[INFO] [stdout] 184 |     objects: Vec<Box<Object>>,
[INFO] [stdout]     |                      ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 184 |     objects: Vec<Box<dyn Object>>,
[INFO] [stdout]     |                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ray`
[INFO] [stdout]  --> src/material.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn emit(&self, ray: &Ray, hit: &RayHit) -> Color {
[INFO] [stdout]   |                    ^^^ help: if this is intentional, prefix it with an underscore: `_ray`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hit`
[INFO] [stdout]  --> src/material.rs:8:31
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn emit(&self, ray: &Ray, hit: &RayHit) -> Color {
[INFO] [stdout]   |                               ^^^ help: if this is intentional, prefix it with an underscore: `_hit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ray`
[INFO] [stdout]   --> src/material.rs:18:23
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn scatter(&self, ray: &Ray, hit: &RayHit) -> Option<(Color, Ray)> {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_ray`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ray`
[INFO] [stdout]   --> src/material.rs:96:23
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn scatter(&self, ray: &Ray, hit: &RayHit) -> Option<(Color, Ray)> {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_ray`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hit`
[INFO] [stdout]   --> src/material.rs:96:34
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn scatter(&self, ray: &Ray, hit: &RayHit) -> Option<(Color, Ray)> {
[INFO] [stdout]    |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_hit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ray`
[INFO] [stdout]    --> src/material.rs:100:20
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn emit(&self, ray: &Ray, hit: &RayHit) -> Color {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_ray`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hit`
[INFO] [stdout]    --> src/material.rs:100:31
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn emit(&self, ray: &Ray, hit: &RayHit) -> Color {
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_hit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ray`
[INFO] [stdout]  --> src/material.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn emit(&self, ray: &Ray, hit: &RayHit) -> Color {
[INFO] [stdout]   |                    ^^^ help: if this is intentional, prefix it with an underscore: `_ray`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hit`
[INFO] [stdout]  --> src/material.rs:8:31
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn emit(&self, ray: &Ray, hit: &RayHit) -> Color {
[INFO] [stdout]   |                               ^^^ help: if this is intentional, prefix it with an underscore: `_hit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ray`
[INFO] [stdout]   --> src/material.rs:18:23
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn scatter(&self, ray: &Ray, hit: &RayHit) -> Option<(Color, Ray)> {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_ray`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ray`
[INFO] [stdout]   --> src/material.rs:96:23
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn scatter(&self, ray: &Ray, hit: &RayHit) -> Option<(Color, Ray)> {
[INFO] [stdout]    |                       ^^^ help: if this is intentional, prefix it with an underscore: `_ray`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hit`
[INFO] [stdout]   --> src/material.rs:96:34
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn scatter(&self, ray: &Ray, hit: &RayHit) -> Option<(Color, Ray)> {
[INFO] [stdout]    |                                  ^^^ help: if this is intentional, prefix it with an underscore: `_hit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ray`
[INFO] [stdout]    --> src/material.rs:100:20
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn emit(&self, ray: &Ray, hit: &RayHit) -> Color {
[INFO] [stdout]     |                    ^^^ help: if this is intentional, prefix it with an underscore: `_ray`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hit`
[INFO] [stdout]    --> src/material.rs:100:31
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn emit(&self, ray: &Ray, hit: &RayHit) -> Color {
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_hit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `focus_point`
[INFO] [stdout]    --> src/main.rs:283:9
[INFO] [stdout]     |
[INFO] [stdout] 283 |     let focus_point = vec3!(5., 10., 4.);
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_focus_point`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:296:9
[INFO] [stdout]     |
[INFO] [stdout] 296 |     for i in 0..300 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:346:9
[INFO] [stdout]     |
[INFO] [stdout] 346 |     let mut focus_point = vec3!(0., 2., 1.);
[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: unused variable: `focus_point`
[INFO] [stdout]    --> src/main.rs:283:9
[INFO] [stdout]     |
[INFO] [stdout] 283 |     let focus_point = vec3!(5., 10., 4.);
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_focus_point`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:296:9
[INFO] [stdout]     |
[INFO] [stdout] 296 |     for i in 0..300 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `axis` is never read
[INFO] [stdout]    --> src/object.rs:235:9
[INFO] [stdout]     |
[INFO] [stdout] 226 | pub struct Rect {
[INFO] [stdout]     |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 235 |     pub axis : Axis,
[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/main.rs:346:9
[INFO] [stdout]     |
[INFO] [stdout] 346 |     let mut focus_point = vec3!(0., 2., 1.);
[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 `SAMPLES` should have a snake case name
[INFO] [stdout]    --> src/main.rs:515:9
[INFO] [stdout]     |
[INFO] [stdout] 515 |     let SAMPLES: i32 = 5000;
[INFO] [stdout]     |         ^^^^^^^ help: convert the identifier to snake case: `samples`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `axis` is never read
[INFO] [stdout]    --> src/object.rs:235:9
[INFO] [stdout]     |
[INFO] [stdout] 226 | pub struct Rect {
[INFO] [stdout]     |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 235 |     pub axis : Axis,
[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 `SAMPLES` should have a snake case name
[INFO] [stdout]    --> src/main.rs:515:9
[INFO] [stdout]     |
[INFO] [stdout] 515 |     let SAMPLES: i32 = 5000;
[INFO] [stdout]     |         ^^^^^^^ help: convert the identifier to snake case: `samples`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:553:5
[INFO] [stdout]     |
[INFO] [stdout] 553 |     img.to_ppm("test.ppm");
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 553 |     let _ = img.to_ppm("test.ppm");
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> src/object.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let N = objs.len();
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:553:5
[INFO] [stdout]     |
[INFO] [stdout] 553 |     img.to_ppm("test.ppm");
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 553 |     let _ = img.to_ppm("test.ppm");
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `N` should have a snake case name
[INFO] [stdout]   --> src/object.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let N = objs.len();
[INFO] [stdout]    |             ^ help: convert the identifier to snake case: `n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.17s
[INFO] running `Command { std: "docker" "inspect" "686636d56a7b26124dfd74801a1ab3fc54a9b92885fc02d4aae20fa0dc9df834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "686636d56a7b26124dfd74801a1ab3fc54a9b92885fc02d4aae20fa0dc9df834", kill_on_drop: false }`
[INFO] [stdout] 686636d56a7b26124dfd74801a1ab3fc54a9b92885fc02d4aae20fa0dc9df834
