[INFO] fetching crate html5ever_dom_sink 0.2.0...
[INFO] documenting html5ever_dom_sink-0.2.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate html5ever_dom_sink 0.2.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate html5ever_dom_sink 0.2.0 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 html5ever_dom_sink 0.2.0
[INFO] removed path dependency html5ever from crates.io crate html5ever_dom_sink 0.2.0
[INFO] removed path dependency html5ever_test_util from crates.io crate html5ever_dom_sink 0.2.0
[INFO] finished tweaking crates.io crate html5ever_dom_sink 0.2.0
[INFO] tweaked toml for crates.io crate html5ever_dom_sink 0.2.0 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 html5ever_test_util v0.1.0
[INFO] [stderr]   Downloaded tendril v0.1.6
[INFO] [stderr]   Downloaded string_cache_shared v0.1.12
[INFO] [stderr]   Downloaded rc v0.1.1
[INFO] [stderr]   Downloaded debug_unreachable v0.0.6
[INFO] [stderr]   Downloaded string_cache v0.8.0
[INFO] [stderr]   Downloaded string_cache_plugin v0.1.10
[INFO] [stderr]   Downloaded mac v0.0.2
[INFO] [stderr]   Downloaded html5ever v0.2.11
[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] [stdout] 5871bc9ff9785468901a1446e353961864bba5a2e4a08ca6019c0d48d3be06af
[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" "5871bc9ff9785468901a1446e353961864bba5a2e4a08ca6019c0d48d3be06af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5871bc9ff9785468901a1446e353961864bba5a2e4a08ca6019c0d48d3be06af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5871bc9ff9785468901a1446e353961864bba5a2e4a08ca6019c0d48d3be06af", kill_on_drop: false }`
[INFO] [stdout] 5871bc9ff9785468901a1446e353961864bba5a2e4a08ca6019c0d48d3be06af
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f92fa0f6ab4771c413d1bb5200b0c1d9de751acd819c2b2b41433ced6c0a444d
[INFO] running `Command { std: "docker" "start" "-a" "f92fa0f6ab4771c413d1bb5200b0c1d9de751acd819c2b2b41433ced6c0a444d", kill_on_drop: false }`
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]     Checking siphasher v0.3.3
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]     Checking rc v0.1.1
[INFO] [stderr]    Compiling time v0.2.17
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking futf v0.1.4
[INFO] [stderr]     Checking debug_unreachable v0.1.1
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling string_cache v0.2.29
[INFO] [stderr]     Checking phf_shared v0.8.0
[INFO] [stderr]    Compiling html5ever v0.2.11
[INFO] [stderr]     Checking string_cache v0.8.0
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking tendril v0.1.6
[INFO] [stderr]  Documenting html5ever_dom_sink v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `string_cache::QualName`
[INFO] [stdout]   --> src/common.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use string_cache::QualName;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^ no `QualName` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `string_cache::QualName`
[INFO] [stdout]   --> src/rcdom.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | use string_cache::QualName;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^ no `QualName` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `string_cache::QualName`
[INFO] [stdout]   --> src/owned_dom.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | use string_cache::QualName;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^ no `QualName` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(box_syntax, append, rc_weak)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `html5ever_dom_sink`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name html5ever_dom_sink 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 html5ever=/opt/rustwide/target/debug/deps/libhtml5ever-9f17c68a2a1e16eb.rmeta --extern mac=/opt/rustwide/target/debug/deps/libmac-ea89c51057a472f0.rmeta --extern string_cache=/opt/rustwide/target/debug/deps/libstring_cache-97f48f896615cf48.rmeta --extern tendril=/opt/rustwide/target/debug/deps/libtendril-2ffa47693ca5614e.rmeta --cap-lints=warn --crate-version 0.2.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "f92fa0f6ab4771c413d1bb5200b0c1d9de751acd819c2b2b41433ced6c0a444d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f92fa0f6ab4771c413d1bb5200b0c1d9de751acd819c2b2b41433ced6c0a444d", kill_on_drop: false }`
[INFO] [stdout] f92fa0f6ab4771c413d1bb5200b0c1d9de751acd819c2b2b41433ced6c0a444d