[INFO] cloning repository https://github.com/s3bk/webgl_demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/s3bk/webgl_demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fs3bk%2Fwebgl_demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fs3bk%2Fwebgl_demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eeb32bd7da3c9355ba81930186c11b8b6acb5025
[INFO] documenting s3bk/webgl_demo against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fs3bk%2Fwebgl_demo" "/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/s3bk/webgl_demo on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/s3bk/webgl_demo
[INFO] finished tweaking git repo https://github.com/s3bk/webgl_demo
[INFO] tweaked toml for git repo https://github.com/s3bk/webgl_demo written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/s3bk/webgl_demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--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-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" "+1.47.0" "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] 600acf97e7bf5263169bbd5a1cd1f3bc0d0c37e38430fd5f89b8d3e7f1da322d
[INFO] running `Command { std: "docker" "start" "-a" "600acf97e7bf5263169bbd5a1cd1f3bc0d0c37e38430fd5f89b8d3e7f1da322d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "600acf97e7bf5263169bbd5a1cd1f3bc0d0c37e38430fd5f89b8d3e7f1da322d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "600acf97e7bf5263169bbd5a1cd1f3bc0d0c37e38430fd5f89b8d3e7f1da322d", kill_on_drop: false }`
[INFO] [stdout] 600acf97e7bf5263169bbd5a1cd1f3bc0d0c37e38430fd5f89b8d3e7f1da322d
[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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 792f6878ddd839e7081fc40ba610ab8074ac0844f6d489bee0d88e86ddfc781e
[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" "792f6878ddd839e7081fc40ba610ab8074ac0844f6d489bee0d88e86ddfc781e", kill_on_drop: false }`
[INFO] [stderr]    Compiling pathfinder_resources v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]     Checking half v1.5.0
[INFO] [stderr]     Checking instant v0.1.2
[INFO] [stderr]     Checking xmlparser v0.13.1
[INFO] [stderr]     Checking xmlwriter v0.1.0
[INFO] [stderr]     Checking rctree v0.3.3
[INFO] [stderr]    Compiling hashbrown v0.7.1
[INFO] [stderr]     Checking data-url v0.1.0
[INFO] [stderr]     Checking pathfinder_log v0.1.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]     Checking simplecss v0.2.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]    Compiling pathfinder_simd v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling gl v0.14.0
[INFO] [stderr]    Compiling wayland-scanner v0.23.6
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.60
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking image v0.23.4
[INFO] [stderr]     Checking wayland-sys v0.23.6
[INFO] [stderr]     Checking glutin_glx_sys v0.1.6
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking calloop v0.4.4
[INFO] [stderr]     Checking roxmltree v0.9.1
[INFO] [stderr]     Checking wayland-commons v0.23.6
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]     Checking usvg v0.9.0
[INFO] [stderr]     Checking ahash v0.3.2
[INFO] [stderr]     Checking pathfinder_geometry v0.5.1 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]     Checking pathfinder_color v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling wayland-client v0.23.6
[INFO] [stderr]    Compiling wayland-protocols v0.23.6
[INFO] [stderr]     Checking pathfinder_gpu v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]     Checking pathfinder_content v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.60
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.60
[INFO] [stderr]     Checking wasm-bindgen v0.2.60
[INFO] [stderr]     Checking pathfinder_gl v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]     Checking js-sys v0.3.37
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking serde v1.0.106
[INFO] [stderr]     Checking web-sys v0.3.37
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking smithay-client-toolkit v0.6.6
[INFO] [stderr]     Checking winit v0.22.1
[INFO] [stderr]     Checking pathfinder_ui v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]     Checking pathfinder_renderer v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]     Checking pathfinder_export v0.1.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]     Checking pathfinder_svg v0.5.0 (https://github.com/s3bk/pathfinder#fbb33f76)
[INFO] [stderr]     Checking glutin v0.24.0
[INFO] [stderr]     Checking pathfinder_view v0.1.0 (https://github.com/s3bk/pathfinder_view#8f68f37f)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/pathfinder_view-e3bb902cdb8b6e4b/8f68f37/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(associated_type_defaults)]
[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 compile `pathfinder_view`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "792f6878ddd839e7081fc40ba610ab8074ac0844f6d489bee0d88e86ddfc781e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "792f6878ddd839e7081fc40ba610ab8074ac0844f6d489bee0d88e86ddfc781e", kill_on_drop: false }`
[INFO] [stdout] 792f6878ddd839e7081fc40ba610ab8074ac0844f6d489bee0d88e86ddfc781e
