[INFO] updating cached repository seandmccarthy/the_ray_tracer_challenge_rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/seandmccarthy/the_ray_tracer_challenge_rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/seandmccarthy/the_ray_tracer_challenge_rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/seandmccarthy/the_ray_tracer_challenge_rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/seandmccarthy/the_ray_tracer_challenge_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/seandmccarthy/the_ray_tracer_challenge_rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/seandmccarthy/the_ray_tracer_challenge_rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/seandmccarthy/the_ray_tracer_challenge_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b28fd14c2e0c569d64d49737086255007bdc7304
[INFO] sha for GitHub repo seandmccarthy/the_ray_tracer_challenge_rs: b28fd14c2e0c569d64d49737086255007bdc7304
[INFO] validating manifest of seandmccarthy/the_ray_tracer_challenge_rs on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of seandmccarthy/the_ray_tracer_challenge_rs on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing seandmccarthy/the_ray_tracer_challenge_rs
[INFO] finished frobbing seandmccarthy/the_ray_tracer_challenge_rs
[INFO] frobbed toml for seandmccarthy/the_ray_tracer_challenge_rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/seandmccarthy/the_ray_tracer_challenge_rs/Cargo.toml
[INFO] started frobbing seandmccarthy/the_ray_tracer_challenge_rs
[INFO] finished frobbing seandmccarthy/the_ray_tracer_challenge_rs
[INFO] frobbed toml for seandmccarthy/the_ray_tracer_challenge_rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/seandmccarthy/the_ray_tracer_challenge_rs/Cargo.toml
[INFO] crate seandmccarthy/the_ray_tracer_challenge_rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing seandmccarthy/the_ray_tracer_challenge_rs against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/seandmccarthy/the_ray_tracer_challenge_rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 0e7577deb99c46281e7d1aed0bed1ac27c7f9470df1fd5092bcb5c3d06520662
[INFO] running `"docker" "start" "-a" "0e7577deb99c46281e7d1aed0bed1ac27c7f9470df1fd5092bcb5c3d06520662"`
[INFO] [stderr]    Compiling ray_tracer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `run`
[INFO] [stderr]   --> src/rt/tuple.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn run() {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tuple`
[INFO] [stderr]   --> src/rt/tuple.rs:74:1
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub fn tuple(x: f64, y: f64, z: f64, w: f64) -> Tuple {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `colour`
[INFO] [stderr]   --> src/rt/tuple.rs:86:1
[INFO] [stderr]    |
[INFO] [stderr] 86 | pub fn colour(red: f64, green: f64, blue: f64) -> Tuple {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dot`
[INFO] [stderr]    --> src/rt/tuple.rs:104:1
[INFO] [stderr]     |
[INFO] [stderr] 104 | pub fn dot(a: &Tuple, b: &Tuple) -> f64 {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cross`
[INFO] [stderr]    --> src/rt/tuple.rs:108:1
[INFO] [stderr]     |
[INFO] [stderr] 108 | pub fn cross(a: &Tuple, b: &Tuple) -> Tuple {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `colour`
[INFO] [stderr]   --> src/rt/colour.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn colour(red: f64, green: f64, blue: f64) -> Colour {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Canvas`
[INFO] [stderr]  --> src/rt/canvas.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct Canvas {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/rt/canvas.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fn new(width: usize, height: usize) -> Canvas {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pixel_at`
[INFO] [stderr]   --> src/rt/canvas.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn pixel_at(&self, x: usize, y: usize) -> & Colour {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_pixel`
[INFO] [stderr]   --> src/rt/canvas.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     fn write_pixel(&mut self, x: usize, y: usize, colour: Colour) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "0e7577deb99c46281e7d1aed0bed1ac27c7f9470df1fd5092bcb5c3d06520662"`
[INFO] running `"docker" "rm" "-f" "0e7577deb99c46281e7d1aed0bed1ac27c7f9470df1fd5092bcb5c3d06520662"`
[INFO] [stdout] 0e7577deb99c46281e7d1aed0bed1ac27c7f9470df1fd5092bcb5c3d06520662
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/seandmccarthy/the_ray_tracer_challenge_rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 37e4015f924de83e47491804d4169da4fc4317751e572244068613a224329148
[INFO] running `"docker" "start" "-a" "37e4015f924de83e47491804d4169da4fc4317751e572244068613a224329148"`
[INFO] [stderr]    Compiling ray_tracer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `run`
[INFO] [stderr]   --> src/rt/tuple.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | pub fn run() {
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `colour`
[INFO] [stderr]   --> src/rt/tuple.rs:86:1
[INFO] [stderr]    |
[INFO] [stderr] 86 | pub fn colour(red: f64, green: f64, blue: f64) -> Tuple {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `"docker" "inspect" "37e4015f924de83e47491804d4169da4fc4317751e572244068613a224329148"`
[INFO] running `"docker" "rm" "-f" "37e4015f924de83e47491804d4169da4fc4317751e572244068613a224329148"`
[INFO] [stdout] 37e4015f924de83e47491804d4169da4fc4317751e572244068613a224329148
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/seandmccarthy/the_ray_tracer_challenge_rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] c86985b779da9291cf8ab9947dd21527fd30dc83194b0ad8e613b781efbe17cf
[INFO] running `"docker" "start" "-a" "c86985b779da9291cf8ab9947dd21527fd30dc83194b0ad8e613b781efbe17cf"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ray_tracer-83a7cf1fcbc38464
[INFO] [stdout] 
[INFO] [stdout] running 26 tests
[INFO] [stdout] test rt::tuple::tests::adding_two_tuples ... ok
[INFO] [stdout] test rt::colour::tests::multiplying_colours ... ok
[INFO] [stdout] test rt::canvas::tests::write_a_pixel ... ok
[INFO] [stdout] test rt::canvas::tests::creating_a_canvas ... ok
[INFO] [stdout] test rt::tuple::tests::cross_product_of_two_vectors ... ok
[INFO] [stdout] test rt::tuple::tests::dividing_a_tuple_by_a_scalar ... ok
[INFO] [stdout] test rt::tuple::tests::dot_product_of_two_vectors ... ok
[INFO] [stdout] test rt::tuple::tests::magnitude_of_negative_vector ... ok
[INFO] [stdout] test rt::tuple::tests::magnitude_of_vector ... ok
[INFO] [stdout] test rt::tuple::tests::magnitude_of_vector_x ... ok
[INFO] [stdout] test rt::tuple::tests::magnitude_of_vector_y ... ok
[INFO] [stdout] test rt::tuple::tests::magnitude_of_vector_z ... ok
[INFO] [stdout] test rt::tuple::tests::multiplying_a_tuple_by_a_fraction ... ok
[INFO] [stdout] test rt::tuple::tests::multiplying_a_tuple_by_a_scalar ... ok
[INFO] [stdout] test rt::tuple::tests::negating_a_tuple ... ok
[INFO] [stdout] test rt::tuple::tests::normalising_a_vector ... ok
[INFO] [stdout] test rt::tuple::tests::normalising_a_vector_x_only ... ok
[INFO] [stdout] test rt::tuple::tests::subtracting_a_vector_from_a_point ... ok
[INFO] [stdout] test rt::tuple::tests::subtracting_two_points ... ok
[INFO] [stdout] test rt::tuple::tests::subtracting_two_vectors ... ok
[INFO] [stdout] test rt::tuple::tests::tuple_with_w_0_is_a_vector ... ok
[INFO] [stdout] test rt::tuple::tests::tuple_with_w_1_is_a_point ... ok
[INFO] [stdout] test rt::colour::tests::create_colour ... ok
[INFO] [stdout] test rt::colour::tests::adding_colours ... ok
[INFO] [stdout] test rt::canvas::tests::get_a_pixel ... ok
[INFO] [stdout] test rt::colour::tests::multiplying_a_colour_by_a_scalar ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 26 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "c86985b779da9291cf8ab9947dd21527fd30dc83194b0ad8e613b781efbe17cf"`
[INFO] running `"docker" "rm" "-f" "c86985b779da9291cf8ab9947dd21527fd30dc83194b0ad8e613b781efbe17cf"`
[INFO] [stdout] c86985b779da9291cf8ab9947dd21527fd30dc83194b0ad8e613b781efbe17cf