[INFO] fetching crate webrender 0.61.0...
[INFO] documenting webrender-0.61.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate webrender 0.61.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate webrender 0.61.0 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 webrender 0.61.0
[INFO] finished tweaking crates.io crate webrender 0.61.0
[INFO] tweaked toml for crates.io crate webrender 0.61.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded webrender_api v0.61.0
[INFO] [stderr]   Downloaded webrender_build v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dac81eb6e7b89fb647a1a07adc3a8dc3196652f2fbbe0dc13b8583843c7a25da
[INFO] running `Command { std: "docker" "start" "-a" "dac81eb6e7b89fb647a1a07adc3a8dc3196652f2fbbe0dc13b8583843c7a25da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dac81eb6e7b89fb647a1a07adc3a8dc3196652f2fbbe0dc13b8583843c7a25da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dac81eb6e7b89fb647a1a07adc3a8dc3196652f2fbbe0dc13b8583843c7a25da", kill_on_drop: false }`
[INFO] [stdout] dac81eb6e7b89fb647a1a07adc3a8dc3196652f2fbbe0dc13b8583843c7a25da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stdout] e3f28f4b4eacc67c8fbd6c6d877cb683f74e5f84de6551118cff08fb47d6851a
[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" "e3f28f4b4eacc67c8fbd6c6d877cb683f74e5f84de6551118cff08fb47d6851a", kill_on_drop: false }`
[INFO] [stderr]     Checking thread_profiler v0.1.3
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling peek-poke-derive v0.2.1
[INFO] [stderr]    Compiling malloc_size_of_derive v0.1.1
[INFO] [stderr]    Compiling webrender_build v0.1.0
[INFO] [stderr]     Checking euclid v0.20.14
[INFO] [stderr]     Checking app_units v0.7.1
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking cstr v0.1.7
[INFO] [stderr]    Compiling webrender v0.61.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]     Checking freetype v0.4.1
[INFO] [stderr]    Compiling gleam v0.6.19
[INFO] [stderr]     Checking wr_malloc_size_of v0.1.0
[INFO] [stderr]     Checking peek-poke v0.2.0
[INFO] [stderr]     Checking plane-split v0.15.0
[INFO] [stderr]     Checking webrender_api v0.61.0
[INFO] [stderr]  Documenting webrender v0.61.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/shade.rs:924:9
[INFO] [stdout]     |
[INFO] [stdout] 924 |         (buffer_kind as usize)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.17s
[INFO] running `Command { std: "docker" "inspect" "e3f28f4b4eacc67c8fbd6c6d877cb683f74e5f84de6551118cff08fb47d6851a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3f28f4b4eacc67c8fbd6c6d877cb683f74e5f84de6551118cff08fb47d6851a", kill_on_drop: false }`
[INFO] [stdout] e3f28f4b4eacc67c8fbd6c6d877cb683f74e5f84de6551118cff08fb47d6851a