[INFO] cloning repository https://github.com/squidboylan/particle-engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/squidboylan/particle-engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsquidboylan%2Fparticle-engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsquidboylan%2Fparticle-engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8a901a9fc045c86e80fd1a0af9571e4c91dac061
[INFO] checking squidboylan/particle-engine against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsquidboylan%2Fparticle-engine" "/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/squidboylan/particle-engine
[INFO] finished tweaking git repo https://github.com/squidboylan/particle-engine
[INFO] tweaked toml for git repo https://github.com/squidboylan/particle-engine written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/squidboylan/particle-engine on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/squidboylan/particle-engine 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a123ead7abde72194f4d48adba424f44eef895c924f961d2115adca6a4d1eb75
[INFO] running `Command { std: "docker" "start" "-a" "a123ead7abde72194f4d48adba424f44eef895c924f961d2115adca6a4d1eb75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a123ead7abde72194f4d48adba424f44eef895c924f961d2115adca6a4d1eb75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a123ead7abde72194f4d48adba424f44eef895c924f961d2115adca6a4d1eb75", kill_on_drop: false }`
[INFO] [stdout] a123ead7abde72194f4d48adba424f44eef895c924f961d2115adca6a4d1eb75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0865918baf1323f998c20dbd4b4634e12bebf2660949085953958ea803486598
[INFO] running `Command { std: "docker" "start" "-a" "0865918baf1323f998c20dbd4b4634e12bebf2660949085953958ea803486598", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]    Compiling khronos_api v3.0.0
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]     Checking downcast-rs v1.0.3
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]    Compiling wayland-scanner v0.20.12
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]    Compiling x11-dl v2.18.3
[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]     Checking smallvec v0.6.7
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]     Checking num_cpus v1.9.0
[INFO] [stderr]    Compiling wayland-client v0.20.12
[INFO] [stderr]    Compiling wayland-protocols v0.20.12
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling num-derive v0.2.3
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]     Checking wayland-sys v0.20.12
[INFO] [stderr]     Checking wayland-commons v0.20.12
[INFO] [stderr]    Compiling gl_generator v0.9.0
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling glutin v0.18.0
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]    Compiling gl v0.11.0
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]     Checking inflate v0.4.4
[INFO] [stderr]     Checking deflate v0.7.19
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]     Checking gif v0.10.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.0
[INFO] [stderr]     Checking smithay-client-toolkit v0.3.0
[INFO] [stderr]     Checking tiff v0.2.1
[INFO] [stderr]     Checking winit v0.17.2
[INFO] [stderr]     Checking image v0.20.1
[INFO] [stderr]     Checking particle-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ControlFlow`
[INFO] [stdout]  --> src/main.rs:2:104
[INFO] [stdout]   |
[INFO] [stdout] 2 | use glutin::{Api, ContextBuilder, Event, EventsLoop, GlContext, GlRequest, WindowBuilder, WindowEvent, ControlFlow};
[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: `std::ffi::CString`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ffi::CString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::str;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ffi::CString`
[INFO] [stdout]  --> src/particles.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ffi::CString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr`
[INFO] [stdout]  --> src/particles.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]  --> src/particles.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::str;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]   --> src/particles.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::time;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]   --> src/particles.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::error::Error;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::SCREEN_WIDTH`
[INFO] [stdout]   --> src/particles.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::SCREEN_WIDTH;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::SCREEN_HEIGHT`
[INFO] [stdout]   --> src/particles.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use crate::SCREEN_HEIGHT;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/shader.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]  --> src/shader.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::time;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/shader.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:28:29
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn main() -> Result<(), Box<Error>> {
[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] 28 | fn main() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/particles.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut compute_shader = ComputeProgram::new(&include_str!("shader.compute"));
[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/particles.rs:135:39
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub fn create_particle(&mut self, mut center: (f32, f32, f32, f32)) {
[INFO] [stdout]     |                                       ----^^^^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `diff`
[INFO] [stdout]    --> src/main.rs:139:13
[INFO] [stdout]     |
[INFO] [stdout] 139 |         let diff = time::Instant::now() - start;
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_diff`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `Vertex` is never constructed
[INFO] [stdout]   --> src/main.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Vertex {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `position` is never read
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Vertex {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 24 |     position: (f32, f32, f32),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Vertex` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `position` is never read
[INFO] [stdout]   --> src/particles.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Vertex {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 22 |     position: (f32, f32, f32),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Vertex` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `pos`, `color`, `vel`, `size`, `life`, and `pad` are never read
[INFO] [stdout]   --> src/particles.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Particle {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 27 |     pos: (f32, f32, f32, f32),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 28 |     color: (f32, f32, f32, f32),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 29 |     vel: (f32, f32, f32, f32),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 30 |     size: f32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 31 |     life: u32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 32 |     pad: [f32; 2],
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Particle` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mesh_vbo`, `gravity`, and `total_particles` are never read
[INFO] [stdout]   --> src/particles.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct ParticleEngine {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 38 |     mesh_vbo: GLuint,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     gravity: (f32, f32, f32),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     total_particles: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ControlFlow`
[INFO] [stdout]  --> src/main.rs:2:104
[INFO] [stdout]   |
[INFO] [stdout] 2 | use glutin::{Api, ContextBuilder, Event, EventsLoop, GlContext, GlRequest, WindowBuilder, WindowEvent, ControlFlow};
[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: `std::ffi::CString`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ffi::CString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::str;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ffi::CString`
[INFO] [stdout]  --> src/particles.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ffi::CString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ptr`
[INFO] [stdout]  --> src/particles.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::ptr;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str`
[INFO] [stdout]  --> src/particles.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::str;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]   --> src/particles.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::time;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]   --> src/particles.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::error::Error;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::SCREEN_WIDTH`
[INFO] [stdout]   --> src/particles.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use crate::SCREEN_WIDTH;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::SCREEN_HEIGHT`
[INFO] [stdout]   --> src/particles.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use crate::SCREEN_HEIGHT;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/shader.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]  --> src/shader.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::time;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/shader.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `particle-engine` (bin "particle-engine") due to 1 previous error; 23 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:28:29
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn main() -> Result<(), Box<Error>> {
[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] 28 | fn main() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/particles.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut compute_shader = ComputeProgram::new(&include_str!("shader.compute"));
[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/particles.rs:135:39
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub fn create_particle(&mut self, mut center: (f32, f32, f32, f32)) {
[INFO] [stdout]     |                                       ----^^^^^^
[INFO] [stdout]     |                                       |
[INFO] [stdout]     |                                       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `diff`
[INFO] [stdout]    --> src/main.rs:139:13
[INFO] [stdout]     |
[INFO] [stdout] 139 |         let diff = time::Instant::now() - start;
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_diff`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `Vertex` is never constructed
[INFO] [stdout]   --> src/main.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Vertex {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `position` is never read
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Vertex {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 24 |     position: (f32, f32, f32),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Vertex` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `position` is never read
[INFO] [stdout]   --> src/particles.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Vertex {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 22 |     position: (f32, f32, f32),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Vertex` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `pos`, `color`, `vel`, `size`, `life`, and `pad` are never read
[INFO] [stdout]   --> src/particles.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Particle {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 27 |     pos: (f32, f32, f32, f32),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 28 |     color: (f32, f32, f32, f32),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 29 |     vel: (f32, f32, f32, f32),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 30 |     size: f32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 31 |     life: u32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 32 |     pad: [f32; 2],
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Particle` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mesh_vbo`, `gravity`, and `total_particles` are never read
[INFO] [stdout]   --> src/particles.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct ParticleEngine {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 38 |     mesh_vbo: GLuint,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |     gravity: (f32, f32, f32),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     total_particles: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `particle-engine` (bin "particle-engine" test) due to 1 previous error; 23 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0865918baf1323f998c20dbd4b4634e12bebf2660949085953958ea803486598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0865918baf1323f998c20dbd4b4634e12bebf2660949085953958ea803486598", kill_on_drop: false }`
[INFO] [stdout] 0865918baf1323f998c20dbd4b4634e12bebf2660949085953958ea803486598
