[INFO] cloning repository https://github.com/jcfocken/RayTracerChallenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jcfocken/RayTracerChallenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcfocken%2FRayTracerChallenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcfocken%2FRayTracerChallenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aa8a290ccfa1a2862725525c8c43dcfd20a9b75a
[INFO] checking jcfocken/RayTracerChallenge against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcfocken%2FRayTracerChallenge" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jcfocken/RayTracerChallenge on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jcfocken/RayTracerChallenge
[INFO] finished tweaking git repo https://github.com/jcfocken/RayTracerChallenge
[INFO] tweaked toml for git repo https://github.com/jcfocken/RayTracerChallenge written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/jcfocken/RayTracerChallenge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1039a40c5af0b1a5ec9c4b13a73a793c2fb224db54d091e284e63637b215a5b9
[INFO] running `Command { std: "docker" "start" "-a" "1039a40c5af0b1a5ec9c4b13a73a793c2fb224db54d091e284e63637b215a5b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1039a40c5af0b1a5ec9c4b13a73a793c2fb224db54d091e284e63637b215a5b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1039a40c5af0b1a5ec9c4b13a73a793c2fb224db54d091e284e63637b215a5b9", kill_on_drop: false }`
[INFO] [stdout] 1039a40c5af0b1a5ec9c4b13a73a793c2fb224db54d091e284e63637b215a5b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57964850f97cb71c1c64ce7a2f4c7c921bccf52355e7fe003e8f7d93384e8602
[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" "57964850f97cb71c1c64ce7a2f4c7c921bccf52355e7fe003e8f7d93384e8602", kill_on_drop: false }`
[INFO] [stderr]     Checking almost v0.2.0
[INFO] [stderr]     Checking ray_tracing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `row` is assigned to, but never used
[INFO] [stdout]    --> src/lib.rs:522:21
[INFO] [stdout]     |
[INFO] [stdout] 522 |             let mut row = 0;
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]     = note: consider using `_row` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `step` is assigned to, but never used
[INFO] [stdout]    --> src/lib.rs:713:17
[INFO] [stdout]     |
[INFO] [stdout] 713 |         let mut step = 0;
[INFO] [stdout]     |                 ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_step` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:740:9
[INFO] [stdout]     |
[INFO] [stdout] 740 |         fs::write("pic.ppm", canv.to_ppm());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `row` is assigned to, but never used
[INFO] [stdout]    --> src/lib.rs:522:21
[INFO] [stdout]     |
[INFO] [stdout] 522 |             let mut row = 0;
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout]     = note: consider using `_row` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/lib.rs:636:17
[INFO] [stdout]     |
[INFO] [stdout] 636 |             for i in 1..4 {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/lib.rs:609:17
[INFO] [stdout]     |
[INFO] [stdout] 609 |             for i in 1..4 {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `step` is assigned to, but never used
[INFO] [stdout]    --> src/lib.rs:713:17
[INFO] [stdout]     |
[INFO] [stdout] 713 |         let mut step = 0;
[INFO] [stdout]     |                 ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_step` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ppm_linebreak`
[INFO] [stdout]    --> src/lib.rs:631:12
[INFO] [stdout]     |
[INFO] [stdout] 631 |         fn ppm_linebreak() {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/lib.rs:740:9
[INFO] [stdout]     |
[INFO] [stdout] 740 |         fs::write("pic.ppm", canv.to_ppm());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.11s
[INFO] running `Command { std: "docker" "inspect" "57964850f97cb71c1c64ce7a2f4c7c921bccf52355e7fe003e8f7d93384e8602", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57964850f97cb71c1c64ce7a2f4c7c921bccf52355e7fe003e8f7d93384e8602", kill_on_drop: false }`
[INFO] [stdout] 57964850f97cb71c1c64ce7a2f4c7c921bccf52355e7fe003e8f7d93384e8602