[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] 5dc3d39c3df2bbd9de50fdf3e92ac6c9bc01e57d
[INFO] documenting vongaisberg/monte-carlo-raytracer against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvongaisberg%2Fmonte-carlo-raytracer" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vongaisberg/monte-carlo-raytracer on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", 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-11/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" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "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] 206b30ae58efbd5aa3d26a0203d5e410fc2d0422e234ff2a87192f40ac57d93c
[INFO] running `Command { std: "docker" "start" "-a" "206b30ae58efbd5aa3d26a0203d5e410fc2d0422e234ff2a87192f40ac57d93c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "206b30ae58efbd5aa3d26a0203d5e410fc2d0422e234ff2a87192f40ac57d93c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "206b30ae58efbd5aa3d26a0203d5e410fc2d0422e234ff2a87192f40ac57d93c", kill_on_drop: false }`
[INFO] [stdout] 206b30ae58efbd5aa3d26a0203d5e410fc2d0422e234ff2a87192f40ac57d93c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f1b39c8abd358b3c613241b0d31d0238d64bd689c6f39f7a030d19df5a1ffb3
[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" "2f1b39c8abd358b3c613241b0d31d0238d64bd689c6f39f7a030d19df5a1ffb3", kill_on_drop: false }`
[INFO] [stderr]     Checking deflate v0.8.3
[INFO] [stderr]     Checking threadpool v1.7.1
[INFO] [stderr]     Checking rayon-core v1.7.0
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking png v0.16.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking image v0.23.2
[INFO] [stderr]  Documenting raytracer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta 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 image=/opt/rustwide/target/debug/deps/libimage-14d47f163b6fbe84.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-d14fdc8735966214.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-22047740af4f7283.rmeta --extern threadpool=/opt/rustwide/target/debug/deps/libthreadpool-78a451a2bda6dd2e.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "2f1b39c8abd358b3c613241b0d31d0238d64bd689c6f39f7a030d19df5a1ffb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f1b39c8abd358b3c613241b0d31d0238d64bd689c6f39f7a030d19df5a1ffb3", kill_on_drop: false }`
[INFO] [stdout] 2f1b39c8abd358b3c613241b0d31d0238d64bd689c6f39f7a030d19df5a1ffb3