[INFO] cloning repository https://github.com/torourk/raytracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/torourk/raytracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorourk%2Fraytracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorourk%2Fraytracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 02cfeab0c46137889b53502bb3e23a56f1e1e6ce
[INFO] testing torourk/raytracer against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorourk%2Fraytracer" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/torourk/raytracer on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/torourk/raytracer
[INFO] finished tweaking git repo https://github.com/torourk/raytracer
[INFO] tweaked toml for git repo https://github.com/torourk/raytracer written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/torourk/raytracer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4949c7e0b6ce0b39926d4a365a289c12c5f5749ba6da44472223b4aabfc0494
[INFO] running `Command { std: "docker" "start" "-a" "f4949c7e0b6ce0b39926d4a365a289c12c5f5749ba6da44472223b4aabfc0494", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4949c7e0b6ce0b39926d4a365a289c12c5f5749ba6da44472223b4aabfc0494", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4949c7e0b6ce0b39926d4a365a289c12c5f5749ba6da44472223b4aabfc0494", kill_on_drop: false }`
[INFO] [stdout] f4949c7e0b6ce0b39926d4a365a289c12c5f5749ba6da44472223b4aabfc0494
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e52654c3f5abd152852a3c96616e0844862a9c17f139230f400e4a117e3d9c9
[INFO] running `Command { std: "docker" "start" "-a" "0e52654c3f5abd152852a3c96616e0844862a9c17f139230f400e4a117e3d9c9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling adler32 v1.0.3
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling inflate v0.4.5
[INFO] [stderr]    Compiling deflate v0.7.19
[INFO] [stderr]    Compiling png v0.14.1
[INFO] [stderr]    Compiling raytracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trace.rs:70:48
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn trace(depth: u32, ray: Ray, world: &Vec<Box<Intersectable + Sync + Send>>) -> Vector3 {
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 70 - fn trace(depth: u32, ray: Ray, world: &Vec<Box<Intersectable + Sync + Send>>) -> Vector3 {
[INFO] [stdout] 70 + fn trace(depth: u32, ray: Ray, world: &Vec<Box<dyn Intersectable + Sync + Send>>) -> Vector3 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/trace.rs:214:21
[INFO] [stdout]     |
[INFO] [stdout] 214 |     world: &Vec<Box<Intersectable + Sync + Send>>,
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 214 -     world: &Vec<Box<Intersectable + Sync + Send>>,
[INFO] [stdout] 214 +     world: &Vec<Box<dyn Intersectable + Sync + Send>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/trace.rs:252:21
[INFO] [stdout]     |
[INFO] [stdout] 252 |     world: &Vec<Box<Intersectable + Sync + Send>>,
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 252 -     world: &Vec<Box<Intersectable + Sync + Send>>,
[INFO] [stdout] 252 +     world: &Vec<Box<dyn Intersectable + Sync + Send>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:70:28
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut world: Vec<Box<Intersectable + Sync + Send>> = Vec::new();
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 70 -     let mut world: Vec<Box<Intersectable + Sync + Send>> = Vec::new();
[INFO] [stdout] 70 +     let mut world: Vec<Box<dyn Intersectable + Sync + Send>> = Vec::new();
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 28s
[INFO] running `Command { std: "docker" "inspect" "0e52654c3f5abd152852a3c96616e0844862a9c17f139230f400e4a117e3d9c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e52654c3f5abd152852a3c96616e0844862a9c17f139230f400e4a117e3d9c9", kill_on_drop: false }`
[INFO] [stdout] 0e52654c3f5abd152852a3c96616e0844862a9c17f139230f400e4a117e3d9c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0aa116a7fddbd7435ea9e8740e91c23ba2bc3849a9e7c10db677d91b0e5eada
[INFO] running `Command { std: "docker" "start" "-a" "c0aa116a7fddbd7435ea9e8740e91c23ba2bc3849a9e7c10db677d91b0e5eada", kill_on_drop: false }`
[INFO] [stderr]    Compiling raytracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/trace.rs:70:48
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn trace(depth: u32, ray: Ray, world: &Vec<Box<Intersectable + Sync + Send>>) -> Vector3 {
[INFO] [stdout]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 70 - fn trace(depth: u32, ray: Ray, world: &Vec<Box<Intersectable + Sync + Send>>) -> Vector3 {
[INFO] [stdout] 70 + fn trace(depth: u32, ray: Ray, world: &Vec<Box<dyn Intersectable + Sync + Send>>) -> Vector3 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/trace.rs:214:21
[INFO] [stdout]     |
[INFO] [stdout] 214 |     world: &Vec<Box<Intersectable + Sync + Send>>,
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 214 -     world: &Vec<Box<Intersectable + Sync + Send>>,
[INFO] [stdout] 214 +     world: &Vec<Box<dyn Intersectable + Sync + Send>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/trace.rs:252:21
[INFO] [stdout]     |
[INFO] [stdout] 252 |     world: &Vec<Box<Intersectable + Sync + Send>>,
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 252 -     world: &Vec<Box<Intersectable + Sync + Send>>,
[INFO] [stdout] 252 +     world: &Vec<Box<dyn Intersectable + Sync + Send>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:70:28
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut world: Vec<Box<Intersectable + Sync + Send>> = Vec::new();
[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/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 70 -     let mut world: Vec<Box<Intersectable + Sync + Send>> = Vec::new();
[INFO] [stdout] 70 +     let mut world: Vec<Box<dyn Intersectable + Sync + Send>> = Vec::new();
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "c0aa116a7fddbd7435ea9e8740e91c23ba2bc3849a9e7c10db677d91b0e5eada", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0aa116a7fddbd7435ea9e8740e91c23ba2bc3849a9e7c10db677d91b0e5eada", kill_on_drop: false }`
[INFO] [stdout] c0aa116a7fddbd7435ea9e8740e91c23ba2bc3849a9e7c10db677d91b0e5eada
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dab0713c3b45f6b73d14d038e2470d79b2bed6900b3046927ac3fd0195cb5b20
[INFO] running `Command { std: "docker" "start" "-a" "dab0713c3b45f6b73d14d038e2470d79b2bed6900b3046927ac3fd0195cb5b20", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/trace.rs:70:48
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn trace(depth: u32, ray: Ray, world: &Vec<Box<Intersectable + Sync + Send>>) -> Vector3 {
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 70 - fn trace(depth: u32, ray: Ray, world: &Vec<Box<Intersectable + Sync + Send>>) -> Vector3 {
[INFO] [stderr] 70 + fn trace(depth: u32, ray: Ray, world: &Vec<Box<dyn Intersectable + Sync + Send>>) -> Vector3 {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/trace.rs:214:21
[INFO] [stderr]     |
[INFO] [stderr] 214 |     world: &Vec<Box<Intersectable + Sync + Send>>,
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 214 -     world: &Vec<Box<Intersectable + Sync + Send>>,
[INFO] [stderr] 214 +     world: &Vec<Box<dyn Intersectable + Sync + Send>>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/trace.rs:252:21
[INFO] [stderr]     |
[INFO] [stderr] 252 |     world: &Vec<Box<Intersectable + Sync + Send>>,
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 252 -     world: &Vec<Box<Intersectable + Sync + Send>>,
[INFO] [stderr] 252 +     world: &Vec<Box<dyn Intersectable + Sync + Send>>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:70:28
[INFO] [stderr]    |
[INFO] [stderr] 70 |     let mut world: Vec<Box<Intersectable + Sync + Send>> = Vec::new();
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 70 -     let mut world: Vec<Box<Intersectable + Sync + Send>> = Vec::new();
[INFO] [stderr] 70 +     let mut world: Vec<Box<dyn Intersectable + Sync + Send>> = Vec::new();
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `raytracer` (bin "raytracer" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.20s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/raytracer-5fe7b5f50abe9a1f)
[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" "dab0713c3b45f6b73d14d038e2470d79b2bed6900b3046927ac3fd0195cb5b20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dab0713c3b45f6b73d14d038e2470d79b2bed6900b3046927ac3fd0195cb5b20", kill_on_drop: false }`
[INFO] [stdout] dab0713c3b45f6b73d14d038e2470d79b2bed6900b3046927ac3fd0195cb5b20