[INFO] fetching crate oculante 0.2.3...
[INFO] documenting oculante-0.2.3 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate oculante 0.2.3 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate oculante 0.2.3 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 crates.io crate oculante 0.2.3
[INFO] finished tweaking crates.io crate oculante 0.2.3
[INFO] tweaked toml for crates.io crate oculante 0.2.3 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate oculante 0.2.3 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 imgref v1.6.1
[INFO] [stderr]   Downloaded dds-rs v0.7.0
[INFO] [stderr]   Downloaded piston v0.50.0
[INFO] [stderr]   Downloaded piston2d-gfx_graphics v0.68.0
[INFO] [stderr]   Downloaded pistoncore-event_loop v0.50.0
[INFO] [stderr]   Downloaded gif-dispose v2.4.0
[INFO] [stderr]   Downloaded windres v0.2.1
[INFO] [stderr]   Downloaded nsvg v0.5.1
[INFO] [stderr]   Downloaded find-winsdk v0.2.0
[INFO] [stderr]   Downloaded pistoncore-window v0.45.0
[INFO] [stderr]   Downloaded pistoncore-glutin_window v0.64.0
[INFO] [stderr]   Downloaded psd v0.1.9
[INFO] [stderr]   Downloaded exr v0.8.0
[INFO] [stderr]   Downloaded piston_window v0.109.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 7d8c12172f3daa9ebbf6a08a2e207ea9ba5e4bada350cc44cf307e6e22f21939
[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" "7d8c12172f3daa9ebbf6a08a2e207ea9ba5e4bada350cc44cf307e6e22f21939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d8c12172f3daa9ebbf6a08a2e207ea9ba5e4bada350cc44cf307e6e22f21939", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d8c12172f3daa9ebbf6a08a2e207ea9ba5e4bada350cc44cf307e6e22f21939", kill_on_drop: false }`
[INFO] [stdout] 7d8c12172f3daa9ebbf6a08a2e207ea9ba5e4bada350cc44cf307e6e22f21939
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] b4207766a36ea4e5d05b34b8c6844bbb01bd91d67c93a677b620802ef76a03a6
[INFO] running `Command { std: "docker" "start" "-a" "b4207766a36ea4e5d05b34b8c6844bbb01bd91d67c93a677b620802ef76a03a6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]    Compiling libloading v0.6.2
[INFO] [stderr]     Checking piston-float v1.0.0
[INFO] [stderr]     Checking piston-graphics_api_version v0.2.0
[INFO] [stderr]     Checking downcast-rs v1.1.1
[INFO] [stderr]     Checking piston-texture v0.8.0
[INFO] [stderr]     Checking interpolation v0.2.0
[INFO] [stderr]     Checking read_color v1.0.0
[INFO] [stderr]     Checking piston-shaders_graphics2d v0.3.1
[INFO] [stderr]     Checking rgb v0.8.18
[INFO] [stderr]     Checking imgref v1.6.1
[INFO] [stderr]    Compiling oculante v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking lebe v0.5.1
[INFO] [stderr]     Checking bit_field v0.10.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling nsvg v0.5.1
[INFO] [stderr]     Checking piston-viewport v1.0.0
[INFO] [stderr]     Checking vecmath v1.0.0
[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 draw_state v0.8.0
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]     Checking shader_version v0.6.0
[INFO] [stderr]     Checking png v0.16.5
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]     Checking gif-dispose v2.4.0
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking exr v0.8.0
[INFO] [stderr]     Checking gfx_core v0.9.2
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking num-integer v0.1.43
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.6
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.4
[INFO] [stderr]    Compiling gfx_gl v0.6.1
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking bincode v0.8.0
[INFO] [stderr]    Compiling gl v0.11.0
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]     Checking num-iter v0.1.41
[INFO] [stderr]     Checking num-rational v0.2.4
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking png v0.12.0
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]     Checking piston2d-graphics v0.36.0
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking image v0.23.5
[INFO] [stderr]     Checking gfx v0.18.2
[INFO] [stderr]     Checking wayland-commons v0.21.13
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling paste-impl v0.1.16
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking piston-gfx_texture v0.41.0
[INFO] [stderr]     Checking gfx_device_gl v0.16.2
[INFO] [stderr]     Checking paste v0.1.16
[INFO] [stderr]     Checking simba v0.1.5
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.68.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking psd v0.1.9
[INFO] [stderr]     Checking nalgebra v0.21.1
[INFO] [stderr]     Checking pistoncore-input v0.28.1
[INFO] [stderr]     Checking dds-rs v0.7.0
[INFO] [stderr]     Checking pistoncore-window v0.45.0
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.6
[INFO] [stderr]     Checking pistoncore-event_loop v0.50.0
[INFO] [stderr]     Checking piston v0.50.0
[INFO] [stderr]     Checking winit v0.19.5
[INFO] [stderr]     Checking glutin v0.21.2
[INFO] [stderr]     Checking pistoncore-glutin_window v0.64.0
[INFO] [stderr]     Checking piston_window v0.109.0
[INFO] [stderr]  Documenting oculante v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(test)]
[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 `oculante`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name oculante 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-3d0d7091e0f3e580.rmeta --extern dds=/opt/rustwide/target/debug/deps/libdds-61db193ef4fa6129.rmeta --extern exr=/opt/rustwide/target/debug/deps/libexr-bf8ef7979e502344.rmeta --extern gif=/opt/rustwide/target/debug/deps/libgif-82d12fb13ede047c.rmeta --extern gif_dispose=/opt/rustwide/target/debug/deps/libgif_dispose-992590ffc854c2ce.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-f8ea87d88d688a8e.rmeta --extern nalgebra=/opt/rustwide/target/debug/deps/libnalgebra-af223840a2b68852.rmeta --extern nsvg=/opt/rustwide/target/debug/deps/libnsvg-c0c7cd86eea02e83.rmeta --extern graphics=/opt/rustwide/target/debug/deps/libgraphics-4216a7681d8d25fb.rmeta --extern piston_window=/opt/rustwide/target/debug/deps/libpiston_window-8f616265738ee29a.rmeta --extern psd=/opt/rustwide/target/debug/deps/libpsd-e09a547c6fa6de83.rmeta --extern rgb=/opt/rustwide/target/debug/deps/librgb-6184c1bbbf34de16.rmeta --cap-lints=warn --crate-version 0.2.3` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "b4207766a36ea4e5d05b34b8c6844bbb01bd91d67c93a677b620802ef76a03a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4207766a36ea4e5d05b34b8c6844bbb01bd91d67c93a677b620802ef76a03a6", kill_on_drop: false }`
[INFO] [stdout] b4207766a36ea4e5d05b34b8c6844bbb01bd91d67c93a677b620802ef76a03a6