[INFO] cloning repository https://github.com/blaesink/rust-raytracing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blaesink/rust-raytracing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblaesink%2Frust-raytracing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblaesink%2Frust-raytracing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4f85d51545278553bc5ec63783ff8f78ad33593f
[INFO] testing blaesink/rust-raytracing against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblaesink%2Frust-raytracing" "/workspace/builds/worker-52/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-52/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blaesink/rust-raytracing on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/blaesink/rust-raytracing
[INFO] finished tweaking git repo https://github.com/blaesink/rust-raytracing
[INFO] tweaked toml for git repo https://github.com/blaesink/rust-raytracing written to /workspace/builds/worker-52/source/Cargo.toml
[INFO] crate git repo https://github.com/blaesink/rust-raytracing already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 171499dfd888e54f9e1194f2525d9f393927c8d94b5431d21c5c159dd0361f3a
[INFO] running `Command { std: "docker" "start" "-a" "171499dfd888e54f9e1194f2525d9f393927c8d94b5431d21c5c159dd0361f3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "171499dfd888e54f9e1194f2525d9f393927c8d94b5431d21c5c159dd0361f3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "171499dfd888e54f9e1194f2525d9f393927c8d94b5431d21c5c159dd0361f3a", kill_on_drop: false }`
[INFO] [stdout] 171499dfd888e54f9e1194f2525d9f393927c8d94b5431d21c5c159dd0361f3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1325c3906fe15145cef77fd68c2f95951f3578b468e95906fbab76caa243f238
[INFO] running `Command { std: "docker" "start" "-a" "1325c3906fe15145cef77fd68c2f95951f3578b468e95906fbab76caa243f238", kill_on_drop: false }`
[INFO] [stderr]    Compiling raytracing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::rc::Rc;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/hittable.rs:25:19
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, rec: &mut HitRecord) -> bool{
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_min`
[INFO] [stdout]   --> src/hittable.rs:25:28
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, rec: &mut HitRecord) -> bool{
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_t_min`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_max`
[INFO] [stdout]   --> src/hittable.rs:25:40
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, rec: &mut HitRecord) -> bool{
[INFO] [stdout]    |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_t_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rec`
[INFO] [stdout]   --> src/hittable.rs:25:52
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, rec: &mut HitRecord) -> bool{
[INFO] [stdout]    |                                                    ^^^ help: if this is intentional, prefix it with an underscore: `_rec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obj`
[INFO] [stdout]   --> src/hittable.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         for obj in &self.objects {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cross`
[INFO] [stdout]    --> src/vec3.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 | pub fn cross(u: &Vec3, v: &Vec3) -> Vec3 {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hittable.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn new(o: Vec::<T>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PI`
[INFO] [stdout]  --> src/rtweekend.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const PI: f64 = 3.1415926535897932385;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `deg_to_rad`
[INFO] [stdout]  --> src/rtweekend.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn deg_to_rad(degrees: f64) -> f64 {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hit_sphere`
[INFO] [stdout]   --> src/main.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn hit_sphere(center: Point3, radius: f64, r: &Ray) -> f64 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 19s
[INFO] running `Command { std: "docker" "inspect" "1325c3906fe15145cef77fd68c2f95951f3578b468e95906fbab76caa243f238", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1325c3906fe15145cef77fd68c2f95951f3578b468e95906fbab76caa243f238", kill_on_drop: false }`
[INFO] [stdout] 1325c3906fe15145cef77fd68c2f95951f3578b468e95906fbab76caa243f238
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a75630abf55b2e92ded21864d3e938dadc84b9487087279e1c68373e2e889643
[INFO] running `Command { std: "docker" "start" "-a" "a75630abf55b2e92ded21864d3e938dadc84b9487087279e1c68373e2e889643", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling raytracing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::rc::Rc`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::rc::Rc;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]   --> src/hittable.rs:25:19
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, rec: &mut HitRecord) -> bool{
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_min`
[INFO] [stdout]   --> src/hittable.rs:25:28
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, rec: &mut HitRecord) -> bool{
[INFO] [stdout]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_t_min`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t_max`
[INFO] [stdout]   --> src/hittable.rs:25:40
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, rec: &mut HitRecord) -> bool{
[INFO] [stdout]    |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_t_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rec`
[INFO] [stdout]   --> src/hittable.rs:25:52
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, rec: &mut HitRecord) -> bool{
[INFO] [stdout]    |                                                    ^^^ help: if this is intentional, prefix it with an underscore: `_rec`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obj`
[INFO] [stdout]   --> src/hittable.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         for obj in &self.objects {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cross`
[INFO] [stdout]    --> src/vec3.rs:129:8
[INFO] [stdout]     |
[INFO] [stdout] 129 | pub fn cross(u: &Vec3, v: &Vec3) -> Vec3 {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/hittable.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |     pub fn new(o: Vec::<T>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PI`
[INFO] [stdout]  --> src/rtweekend.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const PI: f64 = 3.1415926535897932385;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `deg_to_rad`
[INFO] [stdout]  --> src/rtweekend.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn deg_to_rad(degrees: f64) -> f64 {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hit_sphere`
[INFO] [stdout]   --> src/main.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn hit_sphere(center: Point3, radius: f64, r: &Ray) -> f64 {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.51s
[INFO] running `Command { std: "docker" "inspect" "a75630abf55b2e92ded21864d3e938dadc84b9487087279e1c68373e2e889643", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a75630abf55b2e92ded21864d3e938dadc84b9487087279e1c68373e2e889643", kill_on_drop: false }`
[INFO] [stdout] a75630abf55b2e92ded21864d3e938dadc84b9487087279e1c68373e2e889643
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c99f967f605752f0739974923cdab0585b51107da041a5da7947638b7bf2a846
[INFO] running `Command { std: "docker" "start" "-a" "c99f967f605752f0739974923cdab0585b51107da041a5da7947638b7bf2a846", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::rc::Rc;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]   --> src/hittable.rs:25:19
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, rec: &mut HitRecord) -> bool{
[INFO] [stderr]    |                   ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t_min`
[INFO] [stderr]   --> src/hittable.rs:25:28
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, rec: &mut HitRecord) -> bool{
[INFO] [stderr]    |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_t_min`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t_max`
[INFO] [stderr]   --> src/hittable.rs:25:40
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, rec: &mut HitRecord) -> bool{
[INFO] [stderr]    |                                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_t_max`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rec`
[INFO] [stderr]   --> src/hittable.rs:25:52
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn hit(&self, r: &Ray, t_min: f64, t_max: f64, rec: &mut HitRecord) -> bool{
[INFO] [stderr]    |                                                    ^^^ help: if this is intentional, prefix it with an underscore: `_rec`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `obj`
[INFO] [stderr]   --> src/hittable.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |         for obj in &self.objects {
[INFO] [stderr]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cross`
[INFO] [stderr]    --> src/vec3.rs:129:8
[INFO] [stderr]     |
[INFO] [stderr] 129 | pub fn cross(u: &Vec3, v: &Vec3) -> Vec3 {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/hittable.rs:36:12
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn new(o: Vec::<T>) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `PI`
[INFO] [stderr]  --> src/rtweekend.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub const PI: f64 = 3.1415926535897932385;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deg_to_rad`
[INFO] [stderr]  --> src/rtweekend.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn deg_to_rad(degrees: f64) -> f64 {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hit_sphere`
[INFO] [stderr]   --> src/main.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn hit_sphere(center: Point3, radius: f64, r: &Ray) -> f64 {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `raytracing` (bin "raytracing" test) generated 11 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 57s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/raytracing-f4eee473ebe45f18)
[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" "c99f967f605752f0739974923cdab0585b51107da041a5da7947638b7bf2a846", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c99f967f605752f0739974923cdab0585b51107da041a5da7947638b7bf2a846", kill_on_drop: false }`
[INFO] [stdout] c99f967f605752f0739974923cdab0585b51107da041a5da7947638b7bf2a846