[INFO] cloning repository https://github.com/vongaisberg/monte-carlo-raytracer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vongaisberg/monte-carlo-raytracer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvongaisberg%2Fmonte-carlo-raytracer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvongaisberg%2Fmonte-carlo-raytracer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ccc12af29900a776b519b3fdbc69c511697c7bd5
[INFO] documenting vongaisberg/monte-carlo-raytracer against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvongaisberg%2Fmonte-carlo-raytracer" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vongaisberg/monte-carlo-raytracer on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vongaisberg/monte-carlo-raytracer
[INFO] finished tweaking git repo https://github.com/vongaisberg/monte-carlo-raytracer
[INFO] tweaked toml for git repo https://github.com/vongaisberg/monte-carlo-raytracer written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/vongaisberg/monte-carlo-raytracer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7abdb018ebacf791b3c24ab160fdee7893bb5e7e97afd00f0a8114336be25378
[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" "7abdb018ebacf791b3c24ab160fdee7893bb5e7e97afd00f0a8114336be25378", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7abdb018ebacf791b3c24ab160fdee7893bb5e7e97afd00f0a8114336be25378", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7abdb018ebacf791b3c24ab160fdee7893bb5e7e97afd00f0a8114336be25378", kill_on_drop: false }`
[INFO] [stdout] 7abdb018ebacf791b3c24ab160fdee7893bb5e7e97afd00f0a8114336be25378
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] 2402a067fa0157ac0877d28b9cd862411d59ec49c718cbfd9a78175c2cfd5a40
[INFO] running `Command { std: "docker" "start" "-a" "2402a067fa0157ac0877d28b9cd862411d59ec49c718cbfd9a78175c2cfd5a40", kill_on_drop: false }`
[INFO] [stderr]     Checking atomic-counter v1.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking deflate v0.8.3
[INFO] [stderr]     Checking num-complex v0.3.0
[INFO] [stderr]     Checking num-bigint v0.3.0
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking png v0.16.1
[INFO] [stderr]     Checking image v0.23.2
[INFO] [stderr]     Checking num-rational v0.3.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.1
[INFO] [stderr]     Checking crossbeam-queue v0.3.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking num v0.3.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking crossbeam v0.8.0
[INFO] [stderr]  Documenting raytracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `raytracer`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name raytracer src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern atomic_counter=/opt/rustwide/target/debug/deps/libatomic_counter-750f4cf71fec6fc0.rmeta --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-1c928aaecca678b5.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-1ac9776df761c453.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-8087db66a397465d.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-2b9cf981e3aee9fd.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-48b54a036d685a2a.rmeta --extern threadpool=/opt/rustwide/target/debug/deps/libthreadpool-06a800c72e5119b3.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "2402a067fa0157ac0877d28b9cd862411d59ec49c718cbfd9a78175c2cfd5a40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2402a067fa0157ac0877d28b9cd862411d59ec49c718cbfd9a78175c2cfd5a40", kill_on_drop: false }`
[INFO] [stdout] 2402a067fa0157ac0877d28b9cd862411d59ec49c718cbfd9a78175c2cfd5a40
