[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 1.69.0 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floganintech%2Falgo-visualizer" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loganintech/algo-visualizer on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-7-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded backtrace v0.3.44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d886f25d4ff7558b5e0871e53d0783e9f64661d326ae133f5bbc60cbedaede3
[INFO] running `Command { std: "docker" "start" "-a" "0d886f25d4ff7558b5e0871e53d0783e9f64661d326ae133f5bbc60cbedaede3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d886f25d4ff7558b5e0871e53d0783e9f64661d326ae133f5bbc60cbedaede3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d886f25d4ff7558b5e0871e53d0783e9f64661d326ae133f5bbc60cbedaede3", kill_on_drop: false }`
[INFO] [stdout] 0d886f25d4ff7558b5e0871e53d0783e9f64661d326ae133f5bbc60cbedaede3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ba9cf6bde820b8fa1e648ca69d6ac9d899e43a6c1fb127fb5201188f7c09e90
[INFO] running `Command { std: "docker" "start" "-a" "3ba9cf6bde820b8fa1e648ca69d6ac9d899e43a6c1fb127fb5201188f7c09e90", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking piston-float v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]     Checking piston-viewport v1.0.0
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling siphasher v0.3.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking piston-graphics_api_version v0.2.0
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]    Compiling x11-dl v2.18.5
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[INFO] [stderr]     Checking walkdir v2.3.1
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[INFO] [stderr]     Checking crossbeam-queue v0.2.1
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[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking rusttype v0.8.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
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[INFO] [stderr]    Compiling gl v0.11.0
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[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
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[INFO] [stderr]    Compiling phf_generator v0.8.0
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[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]    Compiling palette v0.5.0
[INFO] [stderr]     Checking shader_version v0.6.0
[INFO] [stderr]     Checking vecmath v1.0.0
[INFO] [stderr]     Checking wayland-commons v0.21.13
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[INFO] [stderr]     Checking piston-texture v0.8.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking read_color v1.0.0
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking piston-shaders_graphics2d v0.3.1
[INFO] [stderr]     Checking hsl v0.1.1
[INFO] [stderr]     Checking piston2d-graphics v0.36.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling palette_derive v0.5.0
[INFO] [stderr]     Checking image v0.23.0
[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 stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(is_sorted)]
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[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,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=806e1f8f0abd66f0 -L dependency=/opt/rustwide/target/debug/deps --extern hsl=/opt/rustwide/target/debug/deps/libhsl-86e8e2e346f9ec7f.rmeta --extern palette=/opt/rustwide/target/debug/deps/libpalette-1bc688c586544d60.rmeta --extern piston=/opt/rustwide/target/debug/deps/libpiston-822192b72246275a.rmeta --extern graphics=/opt/rustwide/target/debug/deps/libgraphics-bb817ce0f6739d3f.rmeta --extern opengl_graphics=/opt/rustwide/target/debug/deps/libopengl_graphics-efcaaf77074e6343.rmeta --extern glutin_window=/opt/rustwide/target/debug/deps/libglutin_window-1408c5b3f012fc8c.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-74e49457d31453d8.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3ba9cf6bde820b8fa1e648ca69d6ac9d899e43a6c1fb127fb5201188f7c09e90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ba9cf6bde820b8fa1e648ca69d6ac9d899e43a6c1fb127fb5201188f7c09e90", kill_on_drop: false }`
[INFO] [stdout] 3ba9cf6bde820b8fa1e648ca69d6ac9d899e43a6c1fb127fb5201188f7c09e90
