[INFO] cloning repository https://github.com/wjsetzer/raytracing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wjsetzer/raytracing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwjsetzer%2Fraytracing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwjsetzer%2Fraytracing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d63778adf95829ccdcd468ad8b157fd43cc77fe
[INFO] testing wjsetzer/raytracing against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwjsetzer%2Fraytracing" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/wjsetzer/raytracing
[INFO] finished tweaking git repo https://github.com/wjsetzer/raytracing
[INFO] tweaked toml for git repo https://github.com/wjsetzer/raytracing written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/wjsetzer/raytracing on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/wjsetzer/raytracing 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v2.0.72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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_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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de01655288fc3b9c0d9aeeec331eee7815190396b18d67c5495ada149a518dc7
[INFO] running `Command { std: "docker" "start" "-a" "de01655288fc3b9c0d9aeeec331eee7815190396b18d67c5495ada149a518dc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de01655288fc3b9c0d9aeeec331eee7815190396b18d67c5495ada149a518dc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de01655288fc3b9c0d9aeeec331eee7815190396b18d67c5495ada149a518dc7", kill_on_drop: false }`
[INFO] [stdout] de01655288fc3b9c0d9aeeec331eee7815190396b18d67c5495ada149a518dc7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] a1fb05cd1b066758c77f7c9889bc13d01299013d973c28b3797f440331d4e019
[INFO] running `Command { std: "docker" "start" "-a" "a1fb05cd1b066758c77f7c9889bc13d01299013d973c28b3797f440331d4e019", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling raytracing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `r_in`
[INFO] [stdout]   --> src/material.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn scatter(&self, r_in: Ray, record: &HitRecord) -> Option<(Color, Ray)> {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_r_in`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `size` and `contains` are never used
[INFO] [stdout]   --> src/interval.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Interval {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub fn size(&self) -> f64 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn contains(&self, x: f64) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EMPTY` is never used
[INFO] [stdout]   --> src/interval.rs:36:11
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub const EMPTY: Interval = Interval { min: INFINITY, max: -INFINITY };
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `UNIVERSE` is never used
[INFO] [stdout]   --> src/interval.rs:37:11
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub const UNIVERSE: Interval = Interval { min: -INFINITY, max: INFINITY };
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_on_hemisphere` is never used
[INFO] [stdout]    --> src/vector.rs:240:8
[INFO] [stdout]     |
[INFO] [stdout] 240 | pub fn random_on_hemisphere(normal: Vec3) -> Vec3 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/camera.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |             io::stdout().flush();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 86 |             let _ = io::stdout().flush();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/hittable.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord>;
[INFO] [stdout]    |            ^^^^^ this lifetime flows to the output    --------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord<'_>>;
[INFO] [stdout]    |                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/hittable_list.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord> {
[INFO] [stdout]    |            ^^^^^ this lifetime flows to the output    --------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord<'_>> {
[INFO] [stdout]    |                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/sphere.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord> {
[INFO] [stdout]    |            ^^^^^ this lifetime flows to the output    --------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord<'_>> {
[INFO] [stdout]    |                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.57s
[INFO] running `Command { std: "docker" "inspect" "a1fb05cd1b066758c77f7c9889bc13d01299013d973c28b3797f440331d4e019", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1fb05cd1b066758c77f7c9889bc13d01299013d973c28b3797f440331d4e019", kill_on_drop: false }`
[INFO] [stdout] a1fb05cd1b066758c77f7c9889bc13d01299013d973c28b3797f440331d4e019
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 792aba06872ffaa4a2c046cad4c3fc7b5feaea96c6d6e22151083db3c17ca1c7
[INFO] running `Command { std: "docker" "start" "-a" "792aba06872ffaa4a2c046cad4c3fc7b5feaea96c6d6e22151083db3c17ca1c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling raytracing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `r_in`
[INFO] [stdout]   --> src/material.rs:26:23
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn scatter(&self, r_in: Ray, record: &HitRecord) -> Option<(Color, Ray)> {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_r_in`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `size` and `contains` are never used
[INFO] [stdout]   --> src/interval.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Interval {
[INFO] [stdout]    | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 13 |     pub fn size(&self) -> f64 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn contains(&self, x: f64) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `EMPTY` is never used
[INFO] [stdout]   --> src/interval.rs:36:11
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub const EMPTY: Interval = Interval { min: INFINITY, max: -INFINITY };
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `UNIVERSE` is never used
[INFO] [stdout]   --> src/interval.rs:37:11
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub const UNIVERSE: Interval = Interval { min: -INFINITY, max: INFINITY };
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_on_hemisphere` is never used
[INFO] [stdout]    --> src/vector.rs:240:8
[INFO] [stdout]     |
[INFO] [stdout] 240 | pub fn random_on_hemisphere(normal: Vec3) -> Vec3 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/camera.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |             io::stdout().flush();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 86 |             let _ = io::stdout().flush();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/hittable.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord>;
[INFO] [stdout]    |            ^^^^^ this lifetime flows to the output    --------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord<'_>>;
[INFO] [stdout]    |                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/hittable_list.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord> {
[INFO] [stdout]    |            ^^^^^ this lifetime flows to the output    --------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 22 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord<'_>> {
[INFO] [stdout]    |                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/sphere.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord> {
[INFO] [stdout]    |            ^^^^^ this lifetime flows to the output    --------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord<'_>> {
[INFO] [stdout]    |                                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "792aba06872ffaa4a2c046cad4c3fc7b5feaea96c6d6e22151083db3c17ca1c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "792aba06872ffaa4a2c046cad4c3fc7b5feaea96c6d6e22151083db3c17ca1c7", kill_on_drop: false }`
[INFO] [stdout] 792aba06872ffaa4a2c046cad4c3fc7b5feaea96c6d6e22151083db3c17ca1c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] d375711d037b35bf939ed7adbde64cbbe9489da39c0d219461f875c754ecb595
[INFO] running `Command { std: "docker" "start" "-a" "d375711d037b35bf939ed7adbde64cbbe9489da39c0d219461f875c754ecb595", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `r_in`
[INFO] [stderr]   --> src/material.rs:26:23
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn scatter(&self, r_in: Ray, record: &HitRecord) -> Option<(Color, Ray)> {
[INFO] [stderr]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_r_in`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: methods `size` and `contains` are never used
[INFO] [stderr]   --> src/interval.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 8  | impl Interval {
[INFO] [stderr]    | ------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 13 |     pub fn size(&self) -> f64 {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 17 |     pub fn contains(&self, x: f64) -> bool {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant `EMPTY` is never used
[INFO] [stderr]   --> src/interval.rs:36:11
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub const EMPTY: Interval = Interval { min: INFINITY, max: -INFINITY };
[INFO] [stderr]    |           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `UNIVERSE` is never used
[INFO] [stderr]   --> src/interval.rs:37:11
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub const UNIVERSE: Interval = Interval { min: -INFINITY, max: INFINITY };
[INFO] [stderr]    |           ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `random_on_hemisphere` is never used
[INFO] [stderr]    --> src/vector.rs:240:8
[INFO] [stderr]     |
[INFO] [stderr] 240 | pub fn random_on_hemisphere(normal: Vec3) -> Vec3 {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/camera.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |             io::stdout().flush();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 86 |             let _ = io::stdout().flush();
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/hittable.rs:46:12
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord>;
[INFO] [stderr]    |            ^^^^^ this lifetime flows to the output    --------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord<'_>>;
[INFO] [stderr]    |                                                                ++++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/hittable_list.rs:22:12
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord> {
[INFO] [stderr]    |            ^^^^^ this lifetime flows to the output    --------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord<'_>> {
[INFO] [stderr]    |                                                                ++++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/sphere.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord> {
[INFO] [stderr]    |            ^^^^^ this lifetime flows to the output    --------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn hit(&self, r: &Ray, ray_t: Interval) -> Option<HitRecord<'_>> {
[INFO] [stderr]    |                                                                ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `raytracing` (bin "raytracing" test) generated 9 warnings (run `cargo fix --bin "raytracing" --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/raytracing-666ba634bab28c8f)
[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" "d375711d037b35bf939ed7adbde64cbbe9489da39c0d219461f875c754ecb595", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d375711d037b35bf939ed7adbde64cbbe9489da39c0d219461f875c754ecb595", kill_on_drop: false }`
[INFO] [stdout] d375711d037b35bf939ed7adbde64cbbe9489da39c0d219461f875c754ecb595