[INFO] cloning repository https://github.com/illemonati/snake
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/illemonati/snake" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillemonati%2Fsnake", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillemonati%2Fsnake'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 65b94cca9c3ffe7d48859e2f304e1a0b2cf37c6e
[INFO] checking illemonati/snake against try#b946edaa85de45f124065f52b1bc55ba2fb4f9fb for pr-157562
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillemonati%2Fsnake" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/illemonati/snake
[INFO] finished tweaking git repo https://github.com/illemonati/snake
[INFO] tweaked toml for git repo https://github.com/illemonati/snake written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/illemonati/snake on toolchain b946edaa85de45f124065f52b1bc55ba2fb4f9fb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/illemonati/snake 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" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `snake` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] b365142f99fa256acd49949643c1adf780dfb4a7ff0a64e226111b60771b624b
[INFO] running `Command { std: "docker" "start" "b365142f99fa256acd49949643c1adf780dfb4a7ff0a64e226111b60771b624b", 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" "b365142f99fa256acd49949643c1adf780dfb4a7ff0a64e226111b60771b624b" "/opt/rustwide/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b365142f99fa256acd49949643c1adf780dfb4a7ff0a64e226111b60771b624b", 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" "b365142f99fa256acd49949643c1adf780dfb4a7ff0a64e226111b60771b624b" "/opt/rustwide/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: `snake` (manifest) generated 1 warning
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling proc-macro2 v0.4.19
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.24
[INFO] [stderr]    Compiling khronos_api v2.2.0
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]    Compiling cfg-if v0.1.5
[INFO] [stderr]     Checking piston-float v0.3.0
[INFO] [stderr]     Checking byteorder v1.2.6
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling serde v1.0.78
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]    Compiling log v0.4.5
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking piston-viewport v0.3.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]     Checking token_store v0.1.2
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]    Compiling rayon v1.0.2
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]     Checking shader_version v0.3.0
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking stb_truetype v0.2.4
[INFO] [stderr]     Checking inflate v0.4.3
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking deflate v0.7.18
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking vecmath v0.3.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking gif v0.10.0
[INFO] [stderr]     Checking piston-texture v0.6.0
[INFO] [stderr]     Checking read_color v1.0.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]    Compiling wayland-scanner v0.12.5
[INFO] [stderr]    Compiling gl_generator v0.9.0
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking interpolation v0.1.0
[INFO] [stderr]     Checking piston-shaders_graphics2d v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling x11-dl v2.18.3
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]     Checking ordered-float v0.5.0
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking tempfile v3.0.3
[INFO] [stderr]    Compiling syn v0.15.3
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling wayland-client v0.12.5
[INFO] [stderr]    Compiling wayland-protocols v0.12.5
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking rusttype v0.4.3
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking wayland-sys v0.12.5
[INFO] [stderr]    Compiling gl v0.10.0
[INFO] [stderr]    Compiling glutin v0.14.0
[INFO] [stderr]     Checking piston2d-graphics v0.26.0
[INFO] [stderr]     Checking wayland-kbd v0.13.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling serde_derive v1.0.78
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking wayland-window v0.13.3
[INFO] [stderr]     Checking winit v0.12.0
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.53.0
[INFO] [stderr]     Checking pistoncore-input v0.21.0
[INFO] [stderr]     Checking pistoncore-window v0.32.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.37.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.47.0
[INFO] [stderr]     Checking piston v0.37.0
[INFO] [stderr]     Checking snake v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `piston::window::WindowSettings`
[INFO] [stdout]  --> src/Game.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use piston::window::WindowSettings;
[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: `piston::event_loop::*`
[INFO] [stdout]  --> src/Game.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use piston::event_loop::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `glutin_window::GlutinWindow`
[INFO] [stdout]   --> src/Game.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use glutin_window::GlutinWindow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OpenGL`
[INFO] [stdout]   --> src/Game.rs:11:35
[INFO] [stdout]    |
[INFO] [stdout] 11 | use opengl_graphics::{GlGraphics, OpenGL};
[INFO] [stdout]    |                                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/Game.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |         if (btn == &Button::Keyboard(Key::NumPad1) || btn == &Button::Keyboard(Key::D1)){
[INFO] [stdout]    |            ^                                                                           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 51 -         if (btn == &Button::Keyboard(Key::NumPad1) || btn == &Button::Keyboard(Key::D1)){
[INFO] [stdout] 51 +         if btn == &Button::Keyboard(Key::NumPad1) || btn == &Button::Keyboard(Key::D1) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/Game.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 |         if (btn == &Button::Keyboard(Key::NumPad2) || btn == &Button::Keyboard(Key::D2)){
[INFO] [stdout]    |            ^                                                                           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 54 -         if (btn == &Button::Keyboard(Key::NumPad2) || btn == &Button::Keyboard(Key::D2)){
[INFO] [stdout] 54 +         if btn == &Button::Keyboard(Key::NumPad2) || btn == &Button::Keyboard(Key::D2) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `piston::window::WindowSettings`
[INFO] [stdout]  --> src/Snake.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use piston::window::WindowSettings;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `piston::event_loop::*`
[INFO] [stdout]  --> src/Snake.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use piston::event_loop::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `glutin_window::GlutinWindow`
[INFO] [stdout]   --> src/Snake.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use glutin_window::GlutinWindow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OpenGL`
[INFO] [stdout]   --> src/Snake.rs:11:35
[INFO] [stdout]    |
[INFO] [stdout] 11 | use opengl_graphics::{GlGraphics, OpenGL};
[INFO] [stdout]    |                                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]   --> src/Snake.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `piston::window::WindowSettings`
[INFO] [stdout]  --> src/Game.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use piston::window::WindowSettings;
[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: `piston::event_loop::*`
[INFO] [stdout]  --> src/Game.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use piston::event_loop::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `glutin_window::GlutinWindow`
[INFO] [stdout]   --> src/Game.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use glutin_window::GlutinWindow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OpenGL`
[INFO] [stdout]   --> src/Game.rs:11:35
[INFO] [stdout]    |
[INFO] [stdout] 11 | use opengl_graphics::{GlGraphics, OpenGL};
[INFO] [stdout]    |                                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/Game.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |         if (btn == &Button::Keyboard(Key::NumPad1) || btn == &Button::Keyboard(Key::D1)){
[INFO] [stdout]    |            ^                                                                           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 51 -         if (btn == &Button::Keyboard(Key::NumPad1) || btn == &Button::Keyboard(Key::D1)){
[INFO] [stdout] 51 +         if btn == &Button::Keyboard(Key::NumPad1) || btn == &Button::Keyboard(Key::D1) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/Game.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 |         if (btn == &Button::Keyboard(Key::NumPad2) || btn == &Button::Keyboard(Key::D2)){
[INFO] [stdout]    |            ^                                                                           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 54 -         if (btn == &Button::Keyboard(Key::NumPad2) || btn == &Button::Keyboard(Key::D2)){
[INFO] [stdout] 54 +         if btn == &Button::Keyboard(Key::NumPad2) || btn == &Button::Keyboard(Key::D2) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `piston::window::WindowSettings`
[INFO] [stdout]  --> src/Snake.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use piston::window::WindowSettings;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `piston::event_loop::*`
[INFO] [stdout]  --> src/Snake.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use piston::event_loop::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `glutin_window::GlutinWindow`
[INFO] [stdout]   --> src/Snake.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use glutin_window::GlutinWindow;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `OpenGL`
[INFO] [stdout]   --> src/Snake.rs:11:35
[INFO] [stdout]    |
[INFO] [stdout] 11 | use opengl_graphics::{GlGraphics, OpenGL};
[INFO] [stdout]    |                                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]   --> src/Snake.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::iter::FromIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/main.rs:45:21
[INFO] [stdout]    |
[INFO] [stdout] 45 |         if let Some(u) = e.update_args() {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Game` should have a snake case name
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | mod Game;
[INFO] [stdout]    |     ^^^^ help: convert the identifier to snake case: `game`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Snake` should have a snake case name
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | mod Snake;
[INFO] [stdout]    |     ^^^^^ help: convert the identifier to snake case (notice the capitalization): `snake`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `GREEN` should have a snake case name
[INFO] [stdout]   --> src/Game.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let GREEN: [f32; 4] = [0.0, 1.0, 0.0, 1.0];
[INFO] [stdout]    |             ^^^^^ help: convert the identifier to snake case: `green`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `RED` should have a snake case name
[INFO] [stdout]   --> src/Snake.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let RED: [f32; 4] = [1.0,0.0,0.0,1.0];
[INFO] [stdout]    |             ^^^ help: convert the identifier to snake case: `red`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]   --> src/main.rs:45:21
[INFO] [stdout]    |
[INFO] [stdout] 45 |         if let Some(u) = e.update_args() {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Game` should have a snake case name
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | mod Game;
[INFO] [stdout]    |     ^^^^ help: convert the identifier to snake case: `game`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Snake` should have a snake case name
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | mod Snake;
[INFO] [stdout]    |     ^^^^^ help: convert the identifier to snake case (notice the capitalization): `snake`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `GREEN` should have a snake case name
[INFO] [stdout]   --> src/Game.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |         let GREEN: [f32; 4] = [0.0, 1.0, 0.0, 1.0];
[INFO] [stdout]    |             ^^^^^ help: convert the identifier to snake case: `green`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `RED` should have a snake case name
[INFO] [stdout]   --> src/Snake.rs:27:13
[INFO] [stdout]    |
[INFO] [stdout] 27 |         let RED: [f32; 4] = [1.0,0.0,0.0,1.0];
[INFO] [stdout]    |             ^^^ help: convert the identifier to snake case: `red`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.24s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: glutin v0.14.0, syn v0.14.9, winit v0.12.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "b365142f99fa256acd49949643c1adf780dfb4a7ff0a64e226111b60771b624b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b365142f99fa256acd49949643c1adf780dfb4a7ff0a64e226111b60771b624b", kill_on_drop: false }`
[INFO] [stdout] b365142f99fa256acd49949643c1adf780dfb4a7ff0a64e226111b60771b624b
