[INFO] cloning repository https://github.com/tanaytekin/learn_opengl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tanaytekin/learn_opengl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftanaytekin%2Flearn_opengl", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d5e728e1bbbeffa11132fca95021a657ce47c20
[INFO] testing tanaytekin/learn_opengl against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftanaytekin%2Flearn_opengl" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tanaytekin/learn_opengl on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
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[INFO] finished tweaking git repo https://github.com/tanaytekin/learn_opengl
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[INFO] crate git repo https://github.com/tanaytekin/learn_opengl 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `self::texture::Texture`
[INFO] [stdout]   --> src/graphics/mod.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub use self::texture::Texture;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `material_ambient`
[INFO] [stdout]    --> src/main.rs:221:13
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let mut material_ambient = Vec3::new(1.0, 1.0, 1.00);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_material_ambient`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `material_diffuse`
[INFO] [stdout]    --> src/main.rs:222:13
[INFO] [stdout]     |
[INFO] [stdout] 222 |     let mut material_diffuse = Vec3::new(1.0, 1.0, 1.00);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_material_diffuse`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `material_specular`
[INFO] [stdout]    --> src/main.rs:223:13
[INFO] [stdout]     |
[INFO] [stdout] 223 |     let mut material_specular = Vec3::new(1.0, 1.0, 1.0);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_material_specular`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `material_shininess`
[INFO] [stdout]    --> src/main.rs:225:13
[INFO] [stdout]     |
[INFO] [stdout] 225 |     let mut material_shininess = 32.0;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_material_shininess`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:221:9
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let mut material_ambient = Vec3::new(1.0, 1.0, 1.00);
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |     let mut material_diffuse = Vec3::new(1.0, 1.0, 1.00);
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:223:9
[INFO] [stdout]     |
[INFO] [stdout] 223 |     let mut material_specular = Vec3::new(1.0, 1.0, 1.0);
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:225:9
[INFO] [stdout]     |
[INFO] [stdout] 225 |     let mut material_shininess = 32.0;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:229:9
[INFO] [stdout]     |
[INFO] [stdout] 229 |     let mut md = Model::new("backpack.obj").unwrap();
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:301:13
[INFO] [stdout]     |
[INFO] [stdout] 301 |         let mut light_color = (light_ambient + light_diffuse + light_specular)/3.0;
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vertices` is never read
[INFO] [stdout]   --> src/graphics/model.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Mesh {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 20 |     vertices: Vec<Vertex>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `materials` is never read
[INFO] [stdout]   --> src/graphics/model.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Model {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 39 |     materials: Vec<Rc<Material>>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `glam::Vec3::normalize` that must be used
[INFO] [stdout]    --> src/main.rs:302:9
[INFO] [stdout]     |
[INFO] [stdout] 302 |         light_color.normalize();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 302 |         let _ = light_color.normalize();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 46.58s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v3.2.1, quick-xml v0.22.0
[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" "2a55306bddf4df70e187e294b45a2dc79696df0dc02cf90aae0a6d322803b27b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a55306bddf4df70e187e294b45a2dc79696df0dc02cf90aae0a6d322803b27b", kill_on_drop: false }`
[INFO] [stdout] 2a55306bddf4df70e187e294b45a2dc79696df0dc02cf90aae0a6d322803b27b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc79cdd497664111753c1b7d2c2140691d55bbfe1fa819682351b118a15120ac
[INFO] running `Command { std: "docker" "start" "-a" "bc79cdd497664111753c1b7d2c2140691d55bbfe1fa819682351b118a15120ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn_opengl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self::texture::Texture`
[INFO] [stdout]   --> src/graphics/mod.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub use self::texture::Texture;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `material_ambient`
[INFO] [stdout]    --> src/main.rs:221:13
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let mut material_ambient = Vec3::new(1.0, 1.0, 1.00);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_material_ambient`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `material_diffuse`
[INFO] [stdout]    --> src/main.rs:222:13
[INFO] [stdout]     |
[INFO] [stdout] 222 |     let mut material_diffuse = Vec3::new(1.0, 1.0, 1.00);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_material_diffuse`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `material_specular`
[INFO] [stdout]    --> src/main.rs:223:13
[INFO] [stdout]     |
[INFO] [stdout] 223 |     let mut material_specular = Vec3::new(1.0, 1.0, 1.0);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_material_specular`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `material_shininess`
[INFO] [stdout]    --> src/main.rs:225:13
[INFO] [stdout]     |
[INFO] [stdout] 225 |     let mut material_shininess = 32.0;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_material_shininess`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:221:9
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let mut material_ambient = Vec3::new(1.0, 1.0, 1.00);
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:222:9
[INFO] [stdout]     |
[INFO] [stdout] 222 |     let mut material_diffuse = Vec3::new(1.0, 1.0, 1.00);
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:223:9
[INFO] [stdout]     |
[INFO] [stdout] 223 |     let mut material_specular = Vec3::new(1.0, 1.0, 1.0);
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:225:9
[INFO] [stdout]     |
[INFO] [stdout] 225 |     let mut material_shininess = 32.0;
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:229:9
[INFO] [stdout]     |
[INFO] [stdout] 229 |     let mut md = Model::new("backpack.obj").unwrap();
[INFO] [stdout]     |         ----^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:301:13
[INFO] [stdout]     |
[INFO] [stdout] 301 |         let mut light_color = (light_ambient + light_diffuse + light_specular)/3.0;
[INFO] [stdout]     |             ----^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vertices` is never read
[INFO] [stdout]   --> src/graphics/model.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Mesh {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 20 |     vertices: Vec<Vertex>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `materials` is never read
[INFO] [stdout]   --> src/graphics/model.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct Model {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 39 |     materials: Vec<Rc<Material>>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `glam::Vec3::normalize` that must be used
[INFO] [stdout]    --> src/main.rs:302:9
[INFO] [stdout]     |
[INFO] [stdout] 302 |         light_color.normalize();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 302 |         let _ = light_color.normalize();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v3.2.1, quick-xml v0.22.0
[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" "bc79cdd497664111753c1b7d2c2140691d55bbfe1fa819682351b118a15120ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc79cdd497664111753c1b7d2c2140691d55bbfe1fa819682351b118a15120ac", kill_on_drop: false }`
[INFO] [stdout] bc79cdd497664111753c1b7d2c2140691d55bbfe1fa819682351b118a15120ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 96716ad039a53c784429d35ef4390384e607d3247a5d6f2bea4093f489082318
[INFO] running `Command { std: "docker" "start" "-a" "96716ad039a53c784429d35ef4390384e607d3247a5d6f2bea4093f489082318", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `self::texture::Texture`
[INFO] [stderr]   --> src/graphics/mod.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub use self::texture::Texture;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `material_ambient`
[INFO] [stderr]    --> src/main.rs:221:13
[INFO] [stderr]     |
[INFO] [stderr] 221 |     let mut material_ambient = Vec3::new(1.0, 1.0, 1.00);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_material_ambient`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `material_diffuse`
[INFO] [stderr]    --> src/main.rs:222:13
[INFO] [stderr]     |
[INFO] [stderr] 222 |     let mut material_diffuse = Vec3::new(1.0, 1.0, 1.00);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_material_diffuse`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `material_specular`
[INFO] [stderr]    --> src/main.rs:223:13
[INFO] [stderr]     |
[INFO] [stderr] 223 |     let mut material_specular = Vec3::new(1.0, 1.0, 1.0);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_material_specular`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `material_shininess`
[INFO] [stderr]    --> src/main.rs:225:13
[INFO] [stderr]     |
[INFO] [stderr] 225 |     let mut material_shininess = 32.0;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_material_shininess`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:221:9
[INFO] [stderr]     |
[INFO] [stderr] 221 |     let mut material_ambient = Vec3::new(1.0, 1.0, 1.00);
[INFO] [stderr]     |         ----^^^^^^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:222:9
[INFO] [stderr]     |
[INFO] [stderr] 222 |     let mut material_diffuse = Vec3::new(1.0, 1.0, 1.00);
[INFO] [stderr]     |         ----^^^^^^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:223:9
[INFO] [stderr]     |
[INFO] [stderr] 223 |     let mut material_specular = Vec3::new(1.0, 1.0, 1.0);
[INFO] [stderr]     |         ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:225:9
[INFO] [stderr]     |
[INFO] [stderr] 225 |     let mut material_shininess = 32.0;
[INFO] [stderr]     |         ----^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:229:9
[INFO] [stderr]     |
[INFO] [stderr] 229 |     let mut md = Model::new("backpack.obj").unwrap();
[INFO] [stderr]     |         ----^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:301:13
[INFO] [stderr]     |
[INFO] [stderr] 301 |         let mut light_color = (light_ambient + light_diffuse + light_specular)/3.0;
[INFO] [stderr]     |             ----^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: field `vertices` is never read
[INFO] [stderr]   --> src/graphics/model.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub struct Mesh {
[INFO] [stderr]    |            ---- field in this struct
[INFO] [stderr] 20 |     vertices: Vec<Vertex>,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `materials` is never read
[INFO] [stderr]   --> src/graphics/model.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub struct Model {
[INFO] [stderr]    |            ----- field in this struct
[INFO] [stderr] 39 |     materials: Vec<Rc<Material>>,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `glam::Vec3::normalize` that must be used
[INFO] [stderr]    --> src/main.rs:302:9
[INFO] [stderr]     |
[INFO] [stderr] 302 |         light_color.normalize();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 302 |         let _ = light_color.normalize();
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `learn_opengl` (bin "learn_opengl" test) generated 14 warnings (run `cargo fix --bin "learn_opengl" --tests` to apply 11 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v3.2.1, quick-xml v0.22.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/learn_opengl-78c145b8586a9ebe)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "96716ad039a53c784429d35ef4390384e607d3247a5d6f2bea4093f489082318", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96716ad039a53c784429d35ef4390384e607d3247a5d6f2bea4093f489082318", kill_on_drop: false }`
[INFO] [stdout] 96716ad039a53c784429d35ef4390384e607d3247a5d6f2bea4093f489082318
