[INFO] cloning repository https://github.com/Moggers/amethyst_servo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Moggers/amethyst_servo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMoggers%2Famethyst_servo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMoggers%2Famethyst_servo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 82c3b28937004b24fc31558655e00fde7d6bb324
[INFO] documenting Moggers/amethyst_servo against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMoggers%2Famethyst_servo" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Moggers/amethyst_servo 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 git repo https://github.com/Moggers/amethyst_servo
[INFO] finished tweaking git repo https://github.com/Moggers/amethyst_servo
[INFO] tweaked toml for git repo https://github.com/Moggers/amethyst_servo written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Moggers/amethyst_servo 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/moggers/amethyst`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cocoa v0.13.0
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[INFO] [stderr]   Downloaded harfbuzz-sys v0.1.15
[INFO] [stderr]   Downloaded twox-hash v1.1.0
[INFO] [stderr]   Downloaded core-foundation v0.4.6
[INFO] [stderr]   Downloaded servo-fontconfig v0.2.1
[INFO] [stderr]   Downloaded truetype v0.26.2
[INFO] [stderr]   Downloaded glutin v0.13.1
[INFO] [stderr]   Downloaded blurmock v0.1.3
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[INFO] [stderr]   Downloaded clipboard-win v2.1.1
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[INFO] [stderr]   Downloaded brotli-decompressor v1.2.1
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[INFO] [stderr]   Downloaded ipc-channel v0.10.0
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[INFO] [stderr]   Downloaded wavefront_obj v5.1.0
[INFO] [stderr]   Downloaded genmesh v0.5.0
[INFO] [stderr]   Downloaded atomic_refcell v0.1.1
[INFO] [stderr]   Downloaded parking_lot_core v0.2.13
[INFO] [stderr]   Downloaded swapper v0.1.0
[INFO] [stderr]   Downloaded darling v0.3.2
[INFO] [stderr]   Downloaded uluru v0.2.0
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[INFO] [stderr]   Downloaded bitreader v0.3.1
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[INFO] [stderr]   Downloaded servo-fontconfig-sys v4.0.4
[INFO] [stderr]   Downloaded libdbus-sys v0.1.3
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[INFO] [stderr]   Downloaded brotli v1.2.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] b294eafee46fee855c0b1ebf596227b56dc5c17868b90c05540c82369bb65b7c
[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" "b294eafee46fee855c0b1ebf596227b56dc5c17868b90c05540c82369bb65b7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b294eafee46fee855c0b1ebf596227b56dc5c17868b90c05540c82369bb65b7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b294eafee46fee855c0b1ebf596227b56dc5c17868b90c05540c82369bb65b7c", kill_on_drop: false }`
[INFO] [stdout] b294eafee46fee855c0b1ebf596227b56dc5c17868b90c05540c82369bb65b7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 4b48b53807b50e03bc69440873e5359aca0b97fb28fb6776b51e326d38ce759d
[INFO] running `Command { std: "docker" "start" "-a" "4b48b53807b50e03bc69440873e5359aca0b97fb28fb6776b51e326d38ce759d", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.39
[INFO] [stderr]    Compiling cc v1.0.9
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]     Checking byteorder v1.2.1
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking unicode-normalization v0.1.5
[INFO] [stderr]     Checking matches v0.1.6
[INFO] [stderr]     Checking smallvec v0.6.0
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]     Checking siphasher v0.2.2
[INFO] [stderr]     Checking stable_deref_trait v1.0.0
[INFO] [stderr]    Compiling khronos_api v2.1.0
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling itoa v0.4.1
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking utf-8 v0.7.2
[INFO] [stderr]    Compiling mozjs_sys v0.50.1
[INFO] [stderr]    Compiling procedural-masquerade v0.1.5
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]     Checking smallbitvec v1.0.7
[INFO] [stderr]     Checking httparse v1.2.4
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking getopts v0.2.17
[INFO] [stderr]     Checking xdg v2.1.0
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]     Checking either v1.4.0
[INFO] [stderr]     Checking adler32 v1.0.2
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking utf8-ranges v1.0.0
[INFO] [stderr]     Checking signpost v0.1.0 (https://github.com/pcwalton/signpost.git#7ed71250)
[INFO] [stderr]     Checking rustc-demangle v0.1.7
[INFO] [stderr]    Compiling same-file v0.1.3
[INFO] [stderr]    Compiling ident_case v1.0.0
[INFO] [stderr]     Checking atom v0.3.4
[INFO] [stderr]     Checking futures v0.1.19
[INFO] [stderr]     Checking token_store v0.1.2
[INFO] [stderr]     Checking unicode-segmentation v1.2.0
[INFO] [stderr]     Checking odds v0.2.26
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]     Checking mopa v0.2.2
[INFO] [stderr]     Checking mint v0.5.0
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking tuple_utils v0.2.0
[INFO] [stderr]     Checking atomic_refcell v0.1.1
[INFO] [stderr]     Checking xi-unicode v0.1.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]     Checking sha1 v0.2.0
[INFO] [stderr]    Compiling webrender v0.57.0 (https://github.com/servo/webrender#00b85801)
[INFO] [stderr]     Checking binary-space-partition v0.1.2
[INFO] [stderr]     Checking alloc-no-stdlib v1.2.0
[INFO] [stderr]     Checking thread_profiler v0.1.3
[INFO] [stderr]     Checking bitreader v0.3.1
[INFO] [stderr]     Checking mp3-metadata v0.3.0
[INFO] [stderr]     Checking hex v0.3.1
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking shrev v0.8.1
[INFO] [stderr]     Checking swapper v0.1.0
[INFO] [stderr]     Checking ref_slice v1.1.1
[INFO] [stderr]     Checking ref_filter_map v1.0.1
[INFO] [stderr]     Checking half v1.1.0
[INFO] [stderr]    Compiling dom_struct v0.0.1 (https://github.com/servo/servo?branch=master#e8fdc677)
[INFO] [stderr]     Checking semver v0.1.20
[INFO] [stderr]     Checking lazy_static v0.1.16
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_quote'
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/servo-12bfca331f128de3/e8fdc67/components/dom_struct/lib.rs:17:22
[INFO] [stdout]    |
[INFO] [stdout] 17 |     let attributes = quote! {
[INFO] [stdout]    |                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #54722 <https://github.com/rust-lang/rust/issues/54722> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/servo-12bfca331f128de3/e8fdc67/components/dom_struct/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(proc_macro)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'proc_macro_quote'
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/servo-12bfca331f128de3/e8fdc67/components/dom_struct/lib.rs:9:31
[INFO] [stdout]   |
[INFO] [stdout] 9 | use proc_macro::{TokenStream, quote};
[INFO] [stdout]   |                               ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #54722 <https://github.com/rust-lang/rust/issues/54722> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr]     Checking hetseq v0.1.5
[INFO] [stderr] error: could not compile `dom_struct`.
[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" "4b48b53807b50e03bc69440873e5359aca0b97fb28fb6776b51e326d38ce759d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b48b53807b50e03bc69440873e5359aca0b97fb28fb6776b51e326d38ce759d", kill_on_drop: false }`
[INFO] [stdout] 4b48b53807b50e03bc69440873e5359aca0b97fb28fb6776b51e326d38ce759d