[INFO] cloning repository https://github.com/Dobiasd/ray-tracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dobiasd/ray-tracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDobiasd%2Fray-tracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDobiasd%2Fray-tracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a32083fefecc47957e725e7e99a611da3ecf3cf
[INFO] checking Dobiasd/ray-tracer against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDobiasd%2Fray-tracer" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Dobiasd/ray-tracer on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Dobiasd/ray-tracer
[INFO] finished tweaking git repo https://github.com/Dobiasd/ray-tracer
[INFO] tweaked toml for git repo https://github.com/Dobiasd/ray-tracer written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Dobiasd/ray-tracer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded glutin v0.23.0
[INFO] [stderr]   Downloaded instant v0.1.4
[INFO] [stderr]   Downloaded pixel-canvas v0.2.1
[INFO] [stderr]   Downloaded png v0.16.5
[INFO] [stderr]   Downloaded glium v0.26.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0f52f51147d2daf6d8494ab2d359cfd0a91fedc98a2d3d269191fbecf382831
[INFO] running `Command { std: "docker" "start" "-a" "f0f52f51147d2daf6d8494ab2d359cfd0a91fedc98a2d3d269191fbecf382831", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0f52f51147d2daf6d8494ab2d359cfd0a91fedc98a2d3d269191fbecf382831", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0f52f51147d2daf6d8494ab2d359cfd0a91fedc98a2d3d269191fbecf382831", kill_on_drop: false }`
[INFO] [stdout] f0f52f51147d2daf6d8494ab2d359cfd0a91fedc98a2d3d269191fbecf382831
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30f5bd33c9f1b2927b179d8b2988a4e4e8cee8006cbec5a3020ce5f97552397e
[INFO] running `Command { std: "docker" "start" "-a" "30f5bd33c9f1b2927b179d8b2988a4e4e8cee8006cbec5a3020ce5f97552397e", kill_on_drop: false }`
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[INFO] [stderr]     Checking bouncing-spheres v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `front_face` is never read
[INFO] [stdout]  --> src/raytracer/hit.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Hit {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 9 |     pub front_face: bool,
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `front_face` is never read
[INFO] [stdout]  --> src/raytracer/hit.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Hit {
[INFO] [stdout]   |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 9 |     pub front_face: bool,
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.31s
[INFO] running `Command { std: "docker" "inspect" "30f5bd33c9f1b2927b179d8b2988a4e4e8cee8006cbec5a3020ce5f97552397e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30f5bd33c9f1b2927b179d8b2988a4e4e8cee8006cbec5a3020ce5f97552397e", kill_on_drop: false }`
[INFO] [stdout] 30f5bd33c9f1b2927b179d8b2988a4e4e8cee8006cbec5a3020ce5f97552397e