[INFO] updating cached repository https://github.com/AlcyZ/shindex-rust-tracer-challenge
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/AlcyZ/shindex-rust-tracer-challenge
[INFO] [stderr]  * [new branch]      develop    -> develop
[INFO] [stderr]    6b2a931..7cf52bb  master     -> master
[INFO] [stderr]  * [new branch]      playground -> playground
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7cf52bb03a9537d4f6ced0383def34cb288486e5
[INFO] checking AlcyZ/shindex-rust-tracer-challenge against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlcyZ%2Fshindex-rust-tracer-challenge" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlcyZ/shindex-rust-tracer-challenge on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/AlcyZ/shindex-rust-tracer-challenge
[INFO] finished tweaking git repo https://github.com/AlcyZ/shindex-rust-tracer-challenge
[INFO] tweaked toml for git repo https://github.com/AlcyZ/shindex-rust-tracer-challenge written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/AlcyZ/shindex-rust-tracer-challenge already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8b4f521a65c90f566fd07a6f2645417ddc39117f2ecd3f12f750c536b53a7fbe
[INFO] running `"docker" "start" "-a" "8b4f521a65c90f566fd07a6f2645417ddc39117f2ecd3f12f750c536b53a7fbe"`
[INFO] [stderr]     Checking shindex-rust-tracer-challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/material.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 |         ;
[INFO] [stderr]     |         ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `origin_point`
[INFO] [stderr]   --> src/tuple.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn origin_point() -> Tuple {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `cross`
[INFO] [stderr]   --> src/tuple.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn cross(&self, other: Tuple) -> Tuple {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `matrix_4x4_eq`
[INFO] [stderr]   --> src/matrix.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn matrix_4x4_eq(a: Matrix4x4, b: Matrix4x4) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_invertible`
[INFO] [stderr]    --> src/matrix.rs:168:1
[INFO] [stderr]     |
[INFO] [stderr] 168 | fn is_invertible(m: Matrix4x4) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `translation`
[INFO] [stderr]  --> src/transformation.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn translation(x: f64, y: f64, z: f64) -> Matrix4x4 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rotation_x`
[INFO] [stderr]   --> src/transformation.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn rotation_x(radiant: f64) -> Matrix4x4 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `apply_mat`
[INFO] [stderr]   --> src/sphere.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn apply_mat(&mut self, mat: Material) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/intersection.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn get(&self, i: usize) -> Option<&Intersection> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `count`
[INFO] [stderr]   --> src/intersection.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn count(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.34s
[INFO] running `"docker" "inspect" "8b4f521a65c90f566fd07a6f2645417ddc39117f2ecd3f12f750c536b53a7fbe"`
[INFO] running `"docker" "rm" "-f" "8b4f521a65c90f566fd07a6f2645417ddc39117f2ecd3f12f750c536b53a7fbe"`
[INFO] [stdout] 8b4f521a65c90f566fd07a6f2645417ddc39117f2ecd3f12f750c536b53a7fbe