[INFO] updating cached repository https://github.com/tigleym/ray-tracer
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cec2788ef8f860cbac94e4f3a499f1d33a9a8695
[INFO] checking tigleym/ray-tracer against master#339f574809bf8e4166b8de3cdbe7df181d37af3d for pr-71896
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftigleym%2Fray-tracer" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tigleym/ray-tracer on toolchain 339f574809bf8e4166b8de3cdbe7df181d37af3d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+339f574809bf8e4166b8de3cdbe7df181d37af3d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/tigleym/ray-tracer
[INFO] finished tweaking git repo https://github.com/tigleym/ray-tracer
[INFO] tweaked toml for git repo https://github.com/tigleym/ray-tracer written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/tigleym/ray-tracer already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+339f574809bf8e4166b8de3cdbe7df181d37af3d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "+339f574809bf8e4166b8de3cdbe7df181d37af3d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 50ee9840ccb7ea370cc372a7138a2144ed35cef94fd6e01cc05052bdc785aba6
[INFO] running `"docker" "start" "-a" "50ee9840ccb7ea370cc372a7138a2144ed35cef94fd6e01cc05052bdc785aba6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking ray-tracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `compare_colors`
[INFO] [stderr]   --> src/tuples/color.rs:59:4
[INFO] [stderr]    |
[INFO] [stderr] 59 | fn compare_colors(c: Color, expected: Color) {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/tuples/vector.rs:71:3
[INFO] [stderr]    |
[INFO] [stderr] 71 |   pub fn new() -> Vector {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dot`
[INFO] [stderr]   --> src/tuples/vector.rs:89:8
[INFO] [stderr]    |
[INFO] [stderr] 89 | pub fn dot(a: &Vector, b: &Vector) -> f64 {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cross`
[INFO] [stderr]   --> src/tuples/vector.rs:93:8
[INFO] [stderr]    |
[INFO] [stderr] 93 | pub fn cross(a: &Vector, b: &Vector) -> Vector {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "50ee9840ccb7ea370cc372a7138a2144ed35cef94fd6e01cc05052bdc785aba6"`
[INFO] running `"docker" "rm" "-f" "50ee9840ccb7ea370cc372a7138a2144ed35cef94fd6e01cc05052bdc785aba6"`
[INFO] [stdout] 50ee9840ccb7ea370cc372a7138a2144ed35cef94fd6e01cc05052bdc785aba6