[INFO] updating cached repository https://github.com/richardanaya/virtual-dom-rs-counter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8fdfd9f9c6ca6b63f1d71549321e622653551d02
[INFO] documenting richardanaya/virtual-dom-rs-counter against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frichardanaya%2Fvirtual-dom-rs-counter" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/richardanaya/virtual-dom-rs-counter on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/richardanaya/virtual-dom-rs-counter
[INFO] finished tweaking git repo https://github.com/richardanaya/virtual-dom-rs-counter
[INFO] tweaked toml for git repo https://github.com/richardanaya/virtual-dom-rs-counter written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/richardanaya/virtual-dom-rs-counter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--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-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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17509e3f7770dcc1385d5089d1bebe3d07b94fd7e7357d2f906eb140ae11515a
[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" "17509e3f7770dcc1385d5089d1bebe3d07b94fd7e7357d2f906eb140ae11515a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17509e3f7770dcc1385d5089d1bebe3d07b94fd7e7357d2f906eb140ae11515a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17509e3f7770dcc1385d5089d1bebe3d07b94fd7e7357d2f906eb140ae11515a", kill_on_drop: false }`
[INFO] [stdout] 17509e3f7770dcc1385d5089d1bebe3d07b94fd7e7357d2f906eb140ae11515a
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99d3246dcbef8c4399d7ce2a3ad100366bbfb396b7b6046f5e8cc42b9823e81b
[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" "99d3246dcbef8c4399d7ce2a3ad100366bbfb396b7b6046f5e8cc42b9823e81b", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.29
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.11
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling wasm-bindgen v0.2.29
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling termcolor v1.0.4
[INFO] [stderr]    Compiling sourcefile v0.1.4
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling humantime v1.2.0
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.29
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling nom v4.1.1
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling weedle v0.8.0
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.29
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.29
[INFO] [stderr]    Compiling env_logger v0.6.0
[INFO] [stderr]     Checking js-sys v0.3.6
[INFO] [stderr]    Compiling wasm-bindgen-webidl v0.2.23
[INFO] [stderr]    Compiling web-sys v0.3.6
[INFO] [stderr]     Checking virtual-node v0.0.1 (https://github.com/chinedufn/percy#8f680a30)
[INFO] [stderr]     Checking virtual-dom-rs v0.4.1 (https://github.com/chinedufn/percy#8f680a30)
[INFO] [stderr]  Documenting dom v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(custom_attribute)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![register_tool]` and `#![register_attr]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `virtual_dom_rs::JsCast`
[INFO] [stdout]  --> src/actions/auto_increment_async.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use virtual_dom_rs::JsCast;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^ no `JsCast` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `dom`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type cdylib --crate-name dom 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 virtual_dom_rs=/opt/rustwide/target/debug/deps/libvirtual_dom_rs-31a490a0b98fdfaa.rmeta --extern wasm_bindgen=/opt/rustwide/target/debug/deps/libwasm_bindgen-fc60cc9e6f73ae7b.rmeta --extern web_sys=/opt/rustwide/target/debug/deps/libweb_sys-2703cae766e8a22b.rmeta --cap-lints=forbid` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "99d3246dcbef8c4399d7ce2a3ad100366bbfb396b7b6046f5e8cc42b9823e81b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99d3246dcbef8c4399d7ce2a3ad100366bbfb396b7b6046f5e8cc42b9823e81b", kill_on_drop: false }`
[INFO] [stdout] 99d3246dcbef8c4399d7ce2a3ad100366bbfb396b7b6046f5e8cc42b9823e81b