[INFO] cloning repository https://github.com/loganintech/algo-visualizer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/loganintech/algo-visualizer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floganintech%2Falgo-visualizer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floganintech%2Falgo-visualizer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 04275709ef2cd81292852d4e8e8761760a337657
[INFO] documenting loganintech/algo-visualizer 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%2Floganintech%2Falgo-visualizer" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loganintech/algo-visualizer 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/loganintech/algo-visualizer
[INFO] finished tweaking git repo https://github.com/loganintech/algo-visualizer
[INFO] tweaked toml for git repo https://github.com/loganintech/algo-visualizer written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/loganintech/algo-visualizer 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pistoncore-glutin_window v0.63.0
[INFO] [stderr]   Downloaded image v0.23.0
[INFO] [stderr]   Downloaded pistoncore-window v0.44.0
[INFO] [stderr]   Downloaded pistoncore-event_loop v0.49.0
[INFO] [stderr]   Downloaded piston v0.49.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stdout] 78918e661e1f542c24a8ad4f1058a25050157c76610e9cc074fbd2d1f559cf2c
[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" "78918e661e1f542c24a8ad4f1058a25050157c76610e9cc074fbd2d1f559cf2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78918e661e1f542c24a8ad4f1058a25050157c76610e9cc074fbd2d1f559cf2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78918e661e1f542c24a8ad4f1058a25050157c76610e9cc074fbd2d1f559cf2c", kill_on_drop: false }`
[INFO] [stdout] 78918e661e1f542c24a8ad4f1058a25050157c76610e9cc074fbd2d1f559cf2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8ce93212665d0403eb8f22ab65c2ce6d4c58a96384017531cf874e70174b49d5
[INFO] running `Command { std: "docker" "start" "-a" "8ce93212665d0403eb8f22ab65c2ce6d4c58a96384017531cf874e70174b49d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking piston-float v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling siphasher v0.3.1
[INFO] [stderr]     Checking piston-graphics_api_version v0.2.0
[INFO] [stderr]     Checking downcast-rs v1.1.1
[INFO] [stderr]     Checking read_color v1.0.0
[INFO] [stderr]     Checking interpolation v0.2.0
[INFO] [stderr]     Checking piston-texture v0.8.0
[INFO] [stderr]     Checking piston-shaders_graphics2d v0.3.1
[INFO] [stderr]     Checking hsl v0.1.1
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling num-rational v0.2.3
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]     Checking miniz_oxide v0.3.6
[INFO] [stderr]     Checking piston-viewport v1.0.0
[INFO] [stderr]     Checking vecmath v1.0.0
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking shader_version v0.6.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking phf_shared v0.8.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]     Checking dlib v0.4.1
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking rusttype v0.8.2
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking tiff v0.4.0
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking piston2d-graphics v0.36.0
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.6
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.4
[INFO] [stderr]    Compiling gl v0.11.0
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling palette v0.5.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking image v0.23.0
[INFO] [stderr]     Checking wayland-commons v0.21.13
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling palette_derive v0.5.0
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.72.0
[INFO] [stderr]     Checking pistoncore-input v0.28.0
[INFO] [stderr]     Checking pistoncore-window v0.44.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.49.0
[INFO] [stderr]     Checking piston v0.49.0
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.6
[INFO] [stderr]     Checking winit v0.19.5
[INFO] [stderr]     Checking glutin v0.21.2
[INFO] [stderr]     Checking pistoncore-glutin_window v0.63.0
[INFO] [stderr]  Documenting algo-visualizer 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(is_sorted)]
[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 `algo-visualizer`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name algo_visualizer 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 hsl=/opt/rustwide/target/debug/deps/libhsl-3db60adcbb5169c8.rmeta --extern palette=/opt/rustwide/target/debug/deps/libpalette-d8eb220ce9abbea5.rmeta --extern piston=/opt/rustwide/target/debug/deps/libpiston-ab8a35c0adea180d.rmeta --extern graphics=/opt/rustwide/target/debug/deps/libgraphics-de663186b8a56620.rmeta --extern opengl_graphics=/opt/rustwide/target/debug/deps/libopengl_graphics-4129ea3a2420e634.rmeta --extern glutin_window=/opt/rustwide/target/debug/deps/libglutin_window-678c9445bfa4c1d6.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-0cd98137a33071fc.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "8ce93212665d0403eb8f22ab65c2ce6d4c58a96384017531cf874e70174b49d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ce93212665d0403eb8f22ab65c2ce6d4c58a96384017531cf874e70174b49d5", kill_on_drop: false }`
[INFO] [stdout] 8ce93212665d0403eb8f22ab65c2ce6d4c58a96384017531cf874e70174b49d5