[INFO] cloning repository https://github.com/WeirdConstructor/HexoSynth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/WeirdConstructor/HexoSynth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWeirdConstructor%2FHexoSynth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWeirdConstructor%2FHexoSynth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c70b5c60dd4624859bae28a02c6f75c42306494c
[INFO] documenting WeirdConstructor/HexoSynth against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWeirdConstructor%2FHexoSynth" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/WeirdConstructor/HexoSynth on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/WeirdConstructor/HexoSynth
[INFO] finished tweaking git repo https://github.com/WeirdConstructor/HexoSynth
[INFO] tweaked toml for git repo https://github.com/WeirdConstructor/HexoSynth written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/WeirdConstructor/HexoDSP.git`
[INFO] [stderr]     Updating git repository `https://github.com/WeirdConstructor/HexoTK.git`
[INFO] [stderr]     Updating git repository `https://github.com/glowcoil/baseview.git`
[INFO] [stderr]     Updating git repository `https://github.com/femtovg/femtovg`
[INFO] [stderr]     Updating git repository `https://github.com/glowcoil/raw-gl-context`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d85beb4f98888f972495e787ecfaddb0beb448f18bca392f855dec184fb455fe
[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" "d85beb4f98888f972495e787ecfaddb0beb448f18bca392f855dec184fb455fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d85beb4f98888f972495e787ecfaddb0beb448f18bca392f855dec184fb455fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d85beb4f98888f972495e787ecfaddb0beb448f18bca392f855dec184fb455fe", kill_on_drop: false }`
[INFO] [stdout] d85beb4f98888f972495e787ecfaddb0beb448f18bca392f855dec184fb455fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d9cd4c68645beae420707fed84cfb1837e9e8a30a44345dfa590447dcb6087f
[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" "4d9cd4c68645beae420707fed84cfb1837e9e8a30a44345dfa590447dcb6087f", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-general-category v0.4.0
[INFO] [stderr]     Checking ttf-parser v0.12.3
[INFO] [stderr]     Checking unicode-script v0.5.3
[INFO] [stderr]     Checking unicode-ccc v0.1.2
[INFO] [stderr]     Checking imgref v1.9.1
[INFO] [stderr]     Checking lru v0.6.6
[INFO] [stderr]     Checking glow v0.10.0
[INFO] [stderr]    Compiling x11 v2.18.2
[INFO] [stderr]     Checking rgb v0.8.27
[INFO] [stderr]     Checking ringbuf v0.2.6
[INFO] [stderr]     Checking triple_buffer v5.0.6
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]    Compiling gl v0.14.0
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking hexodsp v0.1.0 (https://github.com/WeirdConstructor/HexoDSP.git#c0c0ac7b)
[INFO] [stderr]     Checking owned_ttf_parser v0.12.1
[INFO] [stderr]     Checking rustybuzz v0.4.0
[INFO] [stderr]     Checking raw-gl-context v0.1.2 (https://github.com/glowcoil/raw-gl-context#a5a1b597)
[INFO] [stderr]     Checking femtovg v0.2.2 (https://github.com/femtovg/femtovg#e9a74da0)
[INFO] [stderr]     Checking xcb-util v0.3.0
[INFO] [stderr]     Checking baseview v0.1.0 (https://github.com/glowcoil/baseview.git?branch=copy-from-parent#35da66bd)
[INFO] [stderr]     Checking hexotk v0.1.0 (https://github.com/WeirdConstructor/HexoTK.git#1426d80e)
[INFO] [stderr]  Documenting hexosynth v0.1.0-alpha-3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(generic_associated_types)]
[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 `hexosynth`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type cdylib --crate-type lib --crate-name hexosynth 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 hexodsp=/opt/rustwide/target/debug/deps/libhexodsp-fffe80195b7e1711.rmeta --extern hexotk=/opt/rustwide/target/debug/deps/libhexotk-c379b00e623f0c8c.rmeta --extern hound=/opt/rustwide/target/debug/deps/libhound-49b8a02e0dd1a88e.rmeta --extern keyboard_types=/opt/rustwide/target/debug/deps/libkeyboard_types-a161e61dd5c2fcef.rmeta --extern raw_window_handle=/opt/rustwide/target/debug/deps/libraw_window_handle-7af83a4c08e34451.rmeta --extern ringbuf=/opt/rustwide/target/debug/deps/libringbuf-cc407809bad9e244.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-2e2aa03d07255382.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-18ae3718de40d143.rmeta --extern triple_buffer=/opt/rustwide/target/debug/deps/libtriple_buffer-de3a1e81f6b42b76.rmeta --cap-lints=warn --crate-version 0.1.0-alpha-3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "4d9cd4c68645beae420707fed84cfb1837e9e8a30a44345dfa590447dcb6087f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d9cd4c68645beae420707fed84cfb1837e9e8a30a44345dfa590447dcb6087f", kill_on_drop: false }`
[INFO] [stdout] 4d9cd4c68645beae420707fed84cfb1837e9e8a30a44345dfa590447dcb6087f
