[INFO] cloning repository wwkeyboard/ray_tracer_challenge
[INFO] running `"git" "clone" "--bare" "git://github.com/wwkeyboard/ray_tracer_challenge.git" "work/cache/sources/gh/wwkeyboard/ray_tracer_challenge"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/wwkeyboard/ray_tracer_challenge'...
[INFO] running `"git" "clone" "work/cache/sources/gh/wwkeyboard/ray_tracer_challenge" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/wwkeyboard/ray_tracer_challenge"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/wwkeyboard/ray_tracer_challenge'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wwkeyboard/ray_tracer_challenge" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/wwkeyboard/ray_tracer_challenge"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/wwkeyboard/ray_tracer_challenge'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 907141e512287752e078fa95a1fd5ade20690bba
[INFO] sha for GitHub repo wwkeyboard/ray_tracer_challenge: 907141e512287752e078fa95a1fd5ade20690bba
[INFO] validating manifest of wwkeyboard/ray_tracer_challenge on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of wwkeyboard/ray_tracer_challenge on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing wwkeyboard/ray_tracer_challenge
[INFO] finished frobbing wwkeyboard/ray_tracer_challenge
[INFO] frobbed toml for wwkeyboard/ray_tracer_challenge written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/wwkeyboard/ray_tracer_challenge/Cargo.toml
[INFO] started frobbing wwkeyboard/ray_tracer_challenge
[INFO] finished frobbing wwkeyboard/ray_tracer_challenge
[INFO] frobbed toml for wwkeyboard/ray_tracer_challenge written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/wwkeyboard/ray_tracer_challenge/Cargo.toml
[INFO] crate wwkeyboard/ray_tracer_challenge has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking wwkeyboard/ray_tracer_challenge against try#290ac7b29f41ff9fa5232f9a1116ea71a3501063 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-5/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/wwkeyboard/ray_tracer_challenge:/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=forbid" "-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" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b473472cc7ec8dab86b5081b8a169b95f00a9d99000d26c93748017530666aa2
[INFO] running `"docker" "start" "-a" "b473472cc7ec8dab86b5081b8a169b95f00a9d99000d26c93748017530666aa2"`
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num-bigint v0.2.0
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-complex v0.2.0
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking ray_tracer_challenge v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `color::Color`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use color::Color;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `color::Color`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use color::Color;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pixel_at`
[INFO] [stderr]   --> src/canvas.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn pixel_at(&self, x: usize, y: usize) -> color::Color {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/matrix.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub fn new(m: Vec<Vec<f32>>) -> Matrix {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `ZERO_VECTOR`
[INFO] [stderr]   --> src/point.rs:7:1
[INFO] [stderr]    |
[INFO] [stderr] 7  | / const ZERO_VECTOR: Tuple = Tuple {
[INFO] [stderr] 8  | |     x: 0.,
[INFO] [stderr] 9  | |     y: 0.,
[INFO] [stderr] 10 | |     z: 0.,
[INFO] [stderr] 11 | |     w: 0.,
[INFO] [stderr] 12 | | };
[INFO] [stderr]    | |__^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_vector`
[INFO] [stderr]   --> src/point.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn is_vector(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_point`
[INFO] [stderr]   --> src/point.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn is_point(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `negate`
[INFO] [stderr]   --> src/point.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn negate(self) -> Tuple {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `magnitude`
[INFO] [stderr]   --> src/point.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn magnitude(&self) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `normalize`
[INFO] [stderr]   --> src/point.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     pub fn normalize(&self) -> Tuple {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dot`
[INFO] [stderr]   --> src/point.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub fn dot(&self, other: Tuple) -> f32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cross`
[INFO] [stderr]   --> src/point.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn cross(&self, other: Tuple) -> Tuple {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.78s
[INFO] running `"docker" "inspect" "b473472cc7ec8dab86b5081b8a169b95f00a9d99000d26c93748017530666aa2"`
[INFO] running `"docker" "rm" "-f" "b473472cc7ec8dab86b5081b8a169b95f00a9d99000d26c93748017530666aa2"`
[INFO] [stdout] b473472cc7ec8dab86b5081b8a169b95f00a9d99000d26c93748017530666aa2