[INFO] cloning repository https://github.com/OverlappingElvis/raytracer-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OverlappingElvis/raytracer-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOverlappingElvis%2Fraytracer-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOverlappingElvis%2Fraytracer-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b561d0ef43a5c95b7a2541c6c24244097fb6d061
[INFO] checking OverlappingElvis/raytracer-challenge against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOverlappingElvis%2Fraytracer-challenge" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/OverlappingElvis/raytracer-challenge on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/OverlappingElvis/raytracer-challenge
[INFO] finished tweaking git repo https://github.com/OverlappingElvis/raytracer-challenge
[INFO] tweaked toml for git repo https://github.com/OverlappingElvis/raytracer-challenge written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/OverlappingElvis/raytracer-challenge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded array2d v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4a487d15f6d87713bea541873a3be280ccde884f4bd97724ea7afa5ff4a41603
[INFO] running `Command { std: "docker" "start" "-a" "4a487d15f6d87713bea541873a3be280ccde884f4bd97724ea7afa5ff4a41603", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a487d15f6d87713bea541873a3be280ccde884f4bd97724ea7afa5ff4a41603", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a487d15f6d87713bea541873a3be280ccde884f4bd97724ea7afa5ff4a41603", kill_on_drop: false }`
[INFO] [stdout] 4a487d15f6d87713bea541873a3be280ccde884f4bd97724ea7afa5ff4a41603
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05d977b430e94138269cbf48d9fb722be4f90e4b6cdd8ff6a37304a5b55f5600
[INFO] running `Command { std: "docker" "start" "-a" "05d977b430e94138269cbf48d9fb722be4f90e4b6cdd8ff6a37304a5b55f5600", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking utility v0.1.0 (/opt/rustwide/workdir/utility)
[INFO] [stderr]     Checking array2d v0.2.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking crossbeam-epoch v0.9.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking raytrace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `dot`
[INFO] [stdout]    --> src/tuple.rs:168:10
[INFO] [stdout]     |
[INFO] [stdout] 168 |   pub fn dot (a: Tuple, b: Tuple) -> f32 {
[INFO] [stdout]     |          ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cross`
[INFO] [stdout]    --> src/tuple.rs:172:10
[INFO] [stdout]     |
[INFO] [stdout] 172 |   pub fn cross (a: Vector, b: Vector) -> Vector {
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `matrix`
[INFO] [stdout]   --> src/matrix.rs:64:10
[INFO] [stdout]    |
[INFO] [stdout] 64 |   pub fn matrix (rows: Vec<Vec<f32>>) -> Matrix {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `identity`
[INFO] [stdout]   --> src/matrix.rs:70:10
[INFO] [stdout]    |
[INFO] [stdout] 70 |   pub fn identity () -> Matrix {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `transpose`
[INFO] [stdout]   --> src/matrix.rs:85:10
[INFO] [stdout]    |
[INFO] [stdout] 85 |   pub fn transpose (matrix: Matrix) -> Matrix {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `determinant`
[INFO] [stdout]   --> src/matrix.rs:91:10
[INFO] [stdout]    |
[INFO] [stdout] 91 |   pub fn determinant (array: Array2D<f32>) -> f32 {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `submatrix`
[INFO] [stdout]    --> src/matrix.rs:100:10
[INFO] [stdout]     |
[INFO] [stdout] 100 |   pub fn submatrix (array: Array2D<f32>, remove_row: usize, remove_column: usize) -> Array2D<f32> {
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.68s
[INFO] running `Command { std: "docker" "inspect" "05d977b430e94138269cbf48d9fb722be4f90e4b6cdd8ff6a37304a5b55f5600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05d977b430e94138269cbf48d9fb722be4f90e4b6cdd8ff6a37304a5b55f5600", kill_on_drop: false }`
[INFO] [stdout] 05d977b430e94138269cbf48d9fb722be4f90e4b6cdd8ff6a37304a5b55f5600