[INFO] updating cached repository https://github.com/yours-plus/first_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] 1f662f6c9c24500db1975e228367bd7e774af976
[INFO] checking yours-plus/first_ray_tracer against try#d27c6c6a469a28343396a8f3ac1c9d403aabda69 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyours-plus%2Ffirst_ray_tracer" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yours-plus/first_ray_tracer on toolchain d27c6c6a469a28343396a8f3ac1c9d403aabda69
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/yours-plus/first_ray_tracer
[INFO] finished tweaking git repo https://github.com/yours-plus/first_ray_tracer
[INFO] tweaked toml for git repo https://github.com/yours-plus/first_ray_tracer written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/yours-plus/first_ray_tracer already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "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] 86463f5c20529a50a46990861366f34c17b6cf6876be827c49f8bbbaba2e5228
[INFO] running `"docker" "start" "-a" "86463f5c20529a50a46990861366f34c17b6cf6876be827c49f8bbbaba2e5228"`
[INFO] [stderr]     Checking first_ray_tracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]   --> src/sphere.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     use super::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `nearly_equals`
[INFO] [stderr]   --> src/sphere.rs:44:8
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn nearly_equals(a: f64, b: f64) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `nearly_equals`
[INFO] [stderr]    --> src/vec3d.rs:112:8
[INFO] [stderr]     |
[INFO] [stderr] 112 |     fn nearly_equals(a: f64, b: f64) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_add`
[INFO] [stderr]    --> src/vec3d.rs:117:8
[INFO] [stderr]     |
[INFO] [stderr] 117 |     fn test_add() {}
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_new_vec3d`
[INFO] [stderr]    --> src/vec3d.rs:130:8
[INFO] [stderr]     |
[INFO] [stderr] 130 |     fn test_new_vec3d() {}
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.67s
[INFO] running `"docker" "inspect" "86463f5c20529a50a46990861366f34c17b6cf6876be827c49f8bbbaba2e5228"`
[INFO] running `"docker" "rm" "-f" "86463f5c20529a50a46990861366f34c17b6cf6876be827c49f8bbbaba2e5228"`
[INFO] [stdout] 86463f5c20529a50a46990861366f34c17b6cf6876be827c49f8bbbaba2e5228