[INFO] cloning repository https://github.com/seandmccarthy/the_ray_tracer_challenge_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/seandmccarthy/the_ray_tracer_challenge_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseandmccarthy%2Fthe_ray_tracer_challenge_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseandmccarthy%2Fthe_ray_tracer_challenge_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b28fd14c2e0c569d64d49737086255007bdc7304
[INFO] checking seandmccarthy/the_ray_tracer_challenge_rs against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseandmccarthy%2Fthe_ray_tracer_challenge_rs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/seandmccarthy/the_ray_tracer_challenge_rs on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/seandmccarthy/the_ray_tracer_challenge_rs
[INFO] finished tweaking git repo https://github.com/seandmccarthy/the_ray_tracer_challenge_rs
[INFO] tweaked toml for git repo https://github.com/seandmccarthy/the_ray_tracer_challenge_rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/seandmccarthy/the_ray_tracer_challenge_rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1eb3de5688d20ac40f2156f730a585054ffc1fa15c46e91532545f8bd700776
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c1eb3de5688d20ac40f2156f730a585054ffc1fa15c46e91532545f8bd700776", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1eb3de5688d20ac40f2156f730a585054ffc1fa15c46e91532545f8bd700776", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1eb3de5688d20ac40f2156f730a585054ffc1fa15c46e91532545f8bd700776", kill_on_drop: false }`
[INFO] [stdout] c1eb3de5688d20ac40f2156f730a585054ffc1fa15c46e91532545f8bd700776
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bc71f2949ed607a16da771dcdb2bb827f20b3f035b763dd9ba77fd5db71a3fe2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bc71f2949ed607a16da771dcdb2bb827f20b3f035b763dd9ba77fd5db71a3fe2", kill_on_drop: false }`
[INFO] [stderr]     Checking ray_tracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]   --> src/rt/tuple.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `tuple`
[INFO] [stdout]   --> src/rt/tuple.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub fn tuple(x: f64, y: f64, z: f64, w: f64) -> Tuple {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `colour`
[INFO] [stdout]   --> src/rt/tuple.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn colour(red: f64, green: f64, blue: f64) -> Tuple {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `dot`
[INFO] [stdout]    --> src/rt/tuple.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 | pub fn dot(a: &Tuple, b: &Tuple) -> f64 {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cross`
[INFO] [stdout]    --> src/rt/tuple.rs:108:8
[INFO] [stdout]     |
[INFO] [stdout] 108 | pub fn cross(a: &Tuple, b: &Tuple) -> Tuple {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `colour`
[INFO] [stdout]   --> src/rt/colour.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn colour(red: f64, green: f64, blue: f64) -> Colour {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Canvas`
[INFO] [stdout]  --> src/rt/canvas.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Canvas {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/rt/canvas.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn new(width: usize, height: usize) -> Canvas {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pixel_at`
[INFO] [stdout]   --> src/rt/canvas.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn pixel_at(&self, x: usize, y: usize) -> & Colour {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `write_pixel`
[INFO] [stdout]   --> src/rt/canvas.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn write_pixel(&mut self, x: usize, y: usize, colour: Colour) {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `run`
[INFO] [stdout]   --> src/rt/tuple.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `colour`
[INFO] [stdout]   --> src/rt/tuple.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn colour(red: f64, green: f64, blue: f64) -> Tuple {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "bc71f2949ed607a16da771dcdb2bb827f20b3f035b763dd9ba77fd5db71a3fe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc71f2949ed607a16da771dcdb2bb827f20b3f035b763dd9ba77fd5db71a3fe2", kill_on_drop: false }`
[INFO] [stdout] bc71f2949ed607a16da771dcdb2bb827f20b3f035b763dd9ba77fd5db71a3fe2