[INFO] cloning repository https://github.com/Kneelawk/julia-in-motion
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kneelawk/julia-in-motion" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKneelawk%2Fjulia-in-motion", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKneelawk%2Fjulia-in-motion'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6165ef517d1cdddc8df259e39e8a621d20ad4db2
[INFO] documenting Kneelawk/julia-in-motion against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKneelawk%2Fjulia-in-motion" "/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/Kneelawk/julia-in-motion on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Kneelawk/julia-in-motion
[INFO] finished tweaking git repo https://github.com/Kneelawk/julia-in-motion
[INFO] tweaked toml for git repo https://github.com/Kneelawk/julia-in-motion written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Kneelawk/julia-in-motion already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lyon_geom v0.15.0
[INFO] [stderr]   Downloaded backtrace v0.3.43
[INFO] [stderr]   Downloaded ucd-util v0.1.7
[INFO] [stderr]   Downloaded wayland-commons v0.24.1
[INFO] [stderr]   Downloaded wayland-client v0.24.1
[INFO] [stderr]   Downloaded euclid v0.20.7
[INFO] [stderr]   Downloaded ffmpeg4 v0.4.0
[INFO] [stderr]   Downloaded ffmpeg4-sys v4.2.2
[INFO] [stderr]   Downloaded wayland-protocols v0.24.1
[INFO] [stderr]   Downloaded minifb v0.15.3
[INFO] [stderr]   Downloaded wayland-scanner v0.24.1
[INFO] [stderr]   Downloaded wayland-sys v0.24.1
[INFO] [stderr]   Downloaded lyon_svg v0.15.0
[INFO] [stderr]   Downloaded lyon_path v0.15.1
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "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] 37ae162531a0fdf15b9ec64b01fab2d12cbb8aa8fdd5602ea600fe91f5375a56
[INFO] running `Command { std: "docker" "start" "-a" "37ae162531a0fdf15b9ec64b01fab2d12cbb8aa8fdd5602ea600fe91f5375a56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37ae162531a0fdf15b9ec64b01fab2d12cbb8aa8fdd5602ea600fe91f5375a56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37ae162531a0fdf15b9ec64b01fab2d12cbb8aa8fdd5602ea600fe91f5375a56", kill_on_drop: false }`
[INFO] [stdout] 37ae162531a0fdf15b9ec64b01fab2d12cbb8aa8fdd5602ea600fe91f5375a56
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f7a04084ba5a0c57f84f7bcdbff71b27cb407919db259a4ca8ace0df13163f3
[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" "3f7a04084ba5a0c57f84f7bcdbff71b27cb407919db259a4ca8ace0df13163f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling ucd-util v0.1.7
[INFO] [stderr]     Checking wayland-sys v0.24.1
[INFO] [stderr]    Compiling ffmpeg4 v0.4.0
[INFO] [stderr]    Compiling minifb v0.15.3
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking nix v0.15.0
[INFO] [stderr]     Checking x11-dl v2.18.5
[INFO] [stderr]     Checking backtrace-sys v0.1.32
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking euclid v0.20.7
[INFO] [stderr]     Checking sid v0.6.1
[INFO] [stderr]     Checking num-complex v0.2.4
[INFO] [stderr]    Compiling wayland-scanner v0.24.1
[INFO] [stderr]     Checking backtrace v0.3.43
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]     Checking rusttype v0.8.2
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking lyon_geom v0.15.0
[INFO] [stderr]     Checking xmlparser v0.3.0
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]     Checking svgparser v0.8.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling which v3.1.0
[INFO] [stderr]     Checking lyon_path v0.15.1
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling wayland-client v0.24.1
[INFO] [stderr]    Compiling wayland-protocols v0.24.1
[INFO] [stderr]     Checking lyon_svg v0.15.0
[INFO] [stderr]     Checking lyon_algorithms v0.15.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]     Checking wayland-commons v0.24.1
[INFO] [stderr]    Compiling bindgen v0.51.1
[INFO] [stderr]    Compiling ffmpeg4-sys v4.2.2
[INFO] [stderr]  Documenting julia-in-motion v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_trait)]
[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 `julia-in-motion`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name julia_in_motion src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-6bab2e7bbe5afbea.rmeta --extern ffmpeg4=/opt/rustwide/target/debug/deps/libffmpeg4-2d5f4e5423ebd296.rmeta --extern ffmpeg4_sys=/opt/rustwide/target/debug/deps/libffmpeg4_sys-5b742301f3f3768b.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-db88f49d9e5662e7.rmeta --extern lyon_algorithms=/opt/rustwide/target/debug/deps/liblyon_algorithms-69ccb4a821ee7231.rmeta --extern lyon_path=/opt/rustwide/target/debug/deps/liblyon_path-3b48fe4e599e6772.rmeta --extern lyon_svg=/opt/rustwide/target/debug/deps/liblyon_svg-264200b966c636fc.rmeta --extern minifb=/opt/rustwide/target/debug/deps/libminifb-8fd288e4a8b5982d.rmeta --extern num_complex=/opt/rustwide/target/debug/deps/libnum_complex-6eceea4a1e379777.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-24ff11c124d5405c.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-e8cd85008cb5529c.rmeta --extern rusttype=/opt/rustwide/target/debug/deps/librusttype-60453462840057b5.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "3f7a04084ba5a0c57f84f7bcdbff71b27cb407919db259a4ca8ace0df13163f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f7a04084ba5a0c57f84f7bcdbff71b27cb407919db259a4ca8ace0df13163f3", kill_on_drop: false }`
[INFO] [stdout] 3f7a04084ba5a0c57f84f7bcdbff71b27cb407919db259a4ca8ace0df13163f3
