[INFO] fetching crate wbg-rand 0.4.1...
[INFO] documenting wbg-rand-0.4.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate wbg-rand 0.4.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate wbg-rand 0.4.1 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wbg-rand 0.4.1
[INFO] finished tweaking crates.io crate wbg-rand 0.4.1
[INFO] tweaked toml for crates.io crate wbg-rand 0.4.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a04699f78fa080524647be9750d2342d465f6f4c3afdd3dc964c3499c48e38a5
[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" "a04699f78fa080524647be9750d2342d465f6f4c3afdd3dc964c3499c48e38a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a04699f78fa080524647be9750d2342d465f6f4c3afdd3dc964c3499c48e38a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a04699f78fa080524647be9750d2342d465f6f4c3afdd3dc964c3499c48e38a5", kill_on_drop: false }`
[INFO] [stdout] a04699f78fa080524647be9750d2342d465f6f4c3afdd3dc964c3499c48e38a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+beta-2022-05-20" "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] 3254614d6066176520e7b291b4977e7164f72e5709fde2fc98cc5c2baff3988c
[INFO] running `Command { std: "docker" "start" "-a" "3254614d6066176520e7b291b4977e7164f72e5709fde2fc98cc5c2baff3988c", 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 wasm-bindgen-shared v0.2.80
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bumpalo v3.9.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.80
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.80
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.80
[INFO] [stderr]     Checking wasm-bindgen v0.2.80
[INFO] [stderr]  Documenting wbg-rand v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:28:1
[INFO] [stdout]    |
[INFO] [stdout] 28 | #![feature(use_extern_macros)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `use_extern_macros` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `wbg-rand`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name wbg_rand src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ba228410d6dbff06 -L dependency=/opt/rustwide/target/debug/deps --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-701e134f05ff346a.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-5ae654ca6f8db27a.rmeta --extern wasm_bindgen=/opt/rustwide/target/debug/deps/libwasm_bindgen-6e18787d1d1b9a86.rmeta --cap-lints=warn --crate-version 0.4.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3254614d6066176520e7b291b4977e7164f72e5709fde2fc98cc5c2baff3988c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3254614d6066176520e7b291b4977e7164f72e5709fde2fc98cc5c2baff3988c", kill_on_drop: false }`
[INFO] [stdout] 3254614d6066176520e7b291b4977e7164f72e5709fde2fc98cc5c2baff3988c