[INFO] fetching crate rdom 0.2.0...
[INFO] documenting rdom-0.2.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate rdom 0.2.0 into /workspace/builds/worker-23/source
[INFO] validating manifest of crates.io crate rdom 0.2.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rdom 0.2.0
[INFO] finished tweaking crates.io crate rdom 0.2.0
[INFO] tweaked toml for crates.io crate rdom 0.2.0 written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4c73fa2277dd0e7d721db69cbe1ce7ff7fb9eb548f02b1ce7107faffd632cb8
[INFO] running `Command { std: "docker" "start" "-a" "b4c73fa2277dd0e7d721db69cbe1ce7ff7fb9eb548f02b1ce7107faffd632cb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4c73fa2277dd0e7d721db69cbe1ce7ff7fb9eb548f02b1ce7107faffd632cb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4c73fa2277dd0e7d721db69cbe1ce7ff7fb9eb548f02b1ce7107faffd632cb8", kill_on_drop: false }`
[INFO] [stdout] b4c73fa2277dd0e7d721db69cbe1ce7ff7fb9eb548f02b1ce7107faffd632cb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 32b20dcdef04407f28f9fb7896d1cc942c366f51a679c560fa9348edf92d89d4
[INFO] running `Command { std: "docker" "start" "-a" "32b20dcdef04407f28f9fb7896d1cc942c366f51a679c560fa9348edf92d89d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]  Documenting rdom v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(arc_new_cyclic)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]    --> src/node/contents.rs:15:13
[INFO] [stdout]     |
[INFO] [stdout] 15  | /             /// Specifies the type of the node.
[INFO] [stdout] 16  | |             /// See https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType
[INFO] [stdout]     | |__________________________________________________________________________________^ help: use an automatic link instead: `<https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType>`
[INFO] [stdout] ...
[INFO] [stdout] 171 | / declare_contents! {
[INFO] [stdout] 172 | |     1 => Element,
[INFO] [stdout] 173 | |     2 => Attribute,
[INFO] [stdout] 174 | |     3 => Text,
[INFO] [stdout] ...   |
[INFO] [stdout] 180 | |     9 => DocumentFragment
[INFO] [stdout] 181 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(rustdoc::bare_urls)]` on by default
[INFO] [stdout]     = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout]     = note: this warning originates in the macro `declare_contents` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]    --> src/node/contents.rs:25:17
[INFO] [stdout]     |
[INFO] [stdout] 25  | /                 /// Returns the number corresponding to the node type per
[INFO] [stdout] 26  | |                 /// https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType#node_type_constants
[INFO] [stdout]     | |______________________________________________________________________________________________________^ help: use an automatic link instead: `<https://developer.mozilla.org/en-US/docs/Web/API/Node/nodeType#node_type_constants>`
[INFO] [stdout] ...
[INFO] [stdout] 171 | / declare_contents! {
[INFO] [stdout] 172 | |     1 => Element,
[INFO] [stdout] 173 | |     2 => Attribute,
[INFO] [stdout] 174 | |     3 => Text,
[INFO] [stdout] ...   |
[INFO] [stdout] 180 | |     9 => DocumentFragment
[INFO] [stdout] 181 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout]     = note: this warning originates in the macro `declare_contents` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `rdom`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name rdom src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b5ab76d5e516c085 -L dependency=/opt/rustwide/target/debug/deps --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern paste=/opt/rustwide/target/debug/deps/libpaste-bd6d0284544a8d29.so --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-0201a942757f7262.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "32b20dcdef04407f28f9fb7896d1cc942c366f51a679c560fa9348edf92d89d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32b20dcdef04407f28f9fb7896d1cc942c366f51a679c560fa9348edf92d89d4", kill_on_drop: false }`
[INFO] [stdout] 32b20dcdef04407f28f9fb7896d1cc942c366f51a679c560fa9348edf92d89d4