[INFO] cloning repository https://github.com/Zonotora/platformer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Zonotora/platformer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZonotora%2Fplatformer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZonotora%2Fplatformer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b8eac2071ff4927047325571d927cb090d814c7a
[INFO] checking Zonotora/platformer against master#de32266a1780aa4ef748ce7f6200a1554fad0aca for pr-75585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZonotora%2Fplatformer" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Zonotora/platformer on toolchain de32266a1780aa4ef748ce7f6200a1554fad0aca
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Zonotora/platformer
[INFO] finished tweaking git repo https://github.com/Zonotora/platformer
[INFO] tweaked toml for git repo https://github.com/Zonotora/platformer written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/Zonotora/platformer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62045dc5382a8c93d29cbc4d3e02571292f6d7858f20dee40b786cef5dac2b83
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "62045dc5382a8c93d29cbc4d3e02571292f6d7858f20dee40b786cef5dac2b83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62045dc5382a8c93d29cbc4d3e02571292f6d7858f20dee40b786cef5dac2b83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62045dc5382a8c93d29cbc4d3e02571292f6d7858f20dee40b786cef5dac2b83", kill_on_drop: false }`
[INFO] [stdout] 62045dc5382a8c93d29cbc4d3e02571292f6d7858f20dee40b786cef5dac2b83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00a4c9928b8971ebcd780e30603f288ba1c75712e7dd256949921f8f9e641f9b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "00a4c9928b8971ebcd780e30603f288ba1c75712e7dd256949921f8f9e641f9b", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `ggez::graphics::Image`
[INFO] [stdout]  --> src/ecs/component/renderer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ggez::graphics::Image;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::asset_manager::AssetManager`
[INFO] [stdout]  --> src/game_state.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::asset_manager::AssetManager;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Renderer`
[INFO] [stdout]  --> src/game_state.rs:2:29
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::ecs::component::{Renderer, Transform};
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Entity`
[INFO] [stdout]  --> src/game_state.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ecs::{Entity, EntityManager};
[INFO] [stdout]   |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ggez::graphics::Image`
[INFO] [stdout]  --> src/ecs/component/renderer.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ggez::graphics::Image;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::asset_manager::AssetManager`
[INFO] [stdout]  --> src/game_state.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::asset_manager::AssetManager;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Renderer`
[INFO] [stdout]  --> src/game_state.rs:2:29
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::ecs::component::{Renderer, Transform};
[INFO] [stdout]   |                             ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Entity`
[INFO] [stdout]  --> src/game_state.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ecs::{Entity, EntityManager};
[INFO] [stdout]   |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]  --> src/asset_manager.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn new(ctx: &mut Context) -> GameResult<AssetManager> {
[INFO] [stdout]   |            ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `component`
[INFO] [stdout]   --> src/ecs/component_manager.rs:16:33
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn update_systems<T: Component>(component: T) {
[INFO] [stdout]    |                                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_component`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]  --> src/ecs/entity_builder.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn new(id: u32) -> EntityBuilder {
[INFO] [stdout]   |                ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entity_manager`
[INFO] [stdout]   --> src/ecs/entity_builder.rs:20:29
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn build(&mut self, entity_manager: &mut EntityManager) {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity_manager`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `width`
[INFO] [stdout]   --> src/game_state.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let (width, height) = graphics::drawable_size(ctx);
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_width`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]   --> src/game_state.rs:29:21
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let (width, height) = graphics::drawable_size(ctx);
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seconds`
[INFO] [stdout]   --> src/game_state.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 |             let seconds = 1.0 / (DESIRED_FPS as f32);
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_seconds`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keymod`
[INFO] [stdout]   --> src/game_state.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         keymod: KeyMods,
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_keymod`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `repeat`
[INFO] [stdout]   --> src/game_state.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         repeat: bool,
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_repeat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ecs/entity.rs:16:40
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn add_component<T: Component>(mut self) { //-> Result<&T, ()> {
[INFO] [stdout]    |                                        ----^^^^
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `AssetManager`
[INFO] [stdout]  --> src/asset_manager.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct AssetManager {}
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/asset_manager.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn new(ctx: &mut Context) -> GameResult<AssetManager> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `width`
[INFO] [stdout]  --> src/ecs/component/renderer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     width: u32,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]  --> src/ecs/component/renderer.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     height: u32,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/ecs/component/renderer.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn new() -> Renderer {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `position`
[INFO] [stdout]  --> src/ecs/component/transform.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     position: Point2<f32>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rotation`
[INFO] [stdout]  --> src/ecs/component/transform.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     rotation: Point2<f32>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `scale`
[INFO] [stdout]  --> src/ecs/component/transform.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     scale: Point2<f32>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create`
[INFO] [stdout]   --> src/ecs/component_manager.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn create<T: Component>(&self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `update_systems`
[INFO] [stdout]   --> src/ecs/component_manager.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn update_systems<T: Component>(component: T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Entity`
[INFO] [stdout]  --> src/ecs/entity.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Entity {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/ecs/entity.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn new() -> Entity {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_id`
[INFO] [stdout]   --> src/ecs/entity.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn get_id(&self) -> u32 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_component`
[INFO] [stdout]   --> src/ecs/entity.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn add_component<T: Component>(mut self) { //-> Result<&T, ()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build`
[INFO] [stdout]   --> src/ecs/entity_builder.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn build(&mut self, entity_manager: &mut EntityManager) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `component_manager`
[INFO] [stdout]   --> src/ecs.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     component_manager: ComponentManager,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `destroy`
[INFO] [stdout]   --> src/ecs.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn destroy(&mut self, e: Entity) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `entity_manager`
[INFO] [stdout]   --> src/game_state.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     entity_manager: EntityManager,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]  --> src/asset_manager.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn new(ctx: &mut Context) -> GameResult<AssetManager> {
[INFO] [stdout]   |            ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `component`
[INFO] [stdout]   --> src/ecs/component_manager.rs:16:33
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn update_systems<T: Component>(component: T) {
[INFO] [stdout]    |                                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_component`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]  --> src/ecs/entity_builder.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn new(id: u32) -> EntityBuilder {
[INFO] [stdout]   |                ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `entity_manager`
[INFO] [stdout]   --> src/ecs/entity_builder.rs:20:29
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn build(&mut self, entity_manager: &mut EntityManager) {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_entity_manager`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `width`
[INFO] [stdout]   --> src/game_state.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let (width, height) = graphics::drawable_size(ctx);
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_width`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]   --> src/game_state.rs:29:21
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let (width, height) = graphics::drawable_size(ctx);
[INFO] [stdout]    |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `seconds`
[INFO] [stdout]   --> src/game_state.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 |             let seconds = 1.0 / (DESIRED_FPS as f32);
[INFO] [stdout]    |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_seconds`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keymod`
[INFO] [stdout]   --> src/game_state.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |         keymod: KeyMods,
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_keymod`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `repeat`
[INFO] [stdout]   --> src/game_state.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         repeat: bool,
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_repeat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ecs/entity.rs:16:40
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn add_component<T: Component>(mut self) { //-> Result<&T, ()> {
[INFO] [stdout]    |                                        ----^^^^
[INFO] [stdout]    |                                        |
[INFO] [stdout]    |                                        help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `AssetManager`
[INFO] [stdout]  --> src/asset_manager.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct AssetManager {}
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/asset_manager.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn new(ctx: &mut Context) -> GameResult<AssetManager> {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `width`
[INFO] [stdout]  --> src/ecs/component/renderer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     width: u32,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]  --> src/ecs/component/renderer.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     height: u32,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/ecs/component/renderer.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn new() -> Renderer {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `position`
[INFO] [stdout]  --> src/ecs/component/transform.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     position: Point2<f32>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rotation`
[INFO] [stdout]  --> src/ecs/component/transform.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     rotation: Point2<f32>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `scale`
[INFO] [stdout]  --> src/ecs/component/transform.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     scale: Point2<f32>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create`
[INFO] [stdout]   --> src/ecs/component_manager.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn create<T: Component>(&self) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `update_systems`
[INFO] [stdout]   --> src/ecs/component_manager.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn update_systems<T: Component>(component: T) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Entity`
[INFO] [stdout]  --> src/ecs/entity.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Entity {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/ecs/entity.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fn new() -> Entity {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_id`
[INFO] [stdout]   --> src/ecs/entity.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn get_id(&self) -> u32 {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_component`
[INFO] [stdout]   --> src/ecs/entity.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn add_component<T: Component>(mut self) { //-> Result<&T, ()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build`
[INFO] [stdout]   --> src/ecs/entity_builder.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn build(&mut self, entity_manager: &mut EntityManager) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `component_manager`
[INFO] [stdout]   --> src/ecs.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     component_manager: ComponentManager,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `destroy`
[INFO] [stdout]   --> src/ecs.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn destroy(&mut self, e: Entity) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `entity_manager`
[INFO] [stdout]   --> src/game_state.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     entity_manager: EntityManager,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 38s
[INFO] running `Command { std: "docker" "inspect" "00a4c9928b8971ebcd780e30603f288ba1c75712e7dd256949921f8f9e641f9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00a4c9928b8971ebcd780e30603f288ba1c75712e7dd256949921f8f9e641f9b", kill_on_drop: false }`
[INFO] [stdout] 00a4c9928b8971ebcd780e30603f288ba1c75712e7dd256949921f8f9e641f9b