[INFO] fetching crate rust-ad-core 0.8.0...
[INFO] documenting rust-ad-core-0.8.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate rust-ad-core 0.8.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rust-ad-core 0.8.0 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 rust-ad-core 0.8.0
[INFO] finished tweaking crates.io crate rust-ad-core 0.8.0
[INFO] tweaked toml for crates.io crate rust-ad-core 0.8.0 written to /workspace/builds/worker-2/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] [stderr]     Blocking waiting for file lock on package cache
[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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 23af6753e508a6f275cf0ac991c7ff5fcef84ce83c1456049284a85fa4a00605
[INFO] running `Command { std: "docker" "start" "-a" "23af6753e508a6f275cf0ac991c7ff5fcef84ce83c1456049284a85fa4a00605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23af6753e508a6f275cf0ac991c7ff5fcef84ce83c1456049284a85fa4a00605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23af6753e508a6f275cf0ac991c7ff5fcef84ce83c1456049284a85fa4a00605", kill_on_drop: false }`
[INFO] [stdout] 23af6753e508a6f275cf0ac991c7ff5fcef84ce83c1456049284a85fa4a00605
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stdout] ecaacb6c9b76b5170e1e35c03ebc07f77322bdb1b3e3dfb9b5e077f8256a7965
[INFO] running `Command { std: "docker" "start" "-a" "ecaacb6c9b76b5170e1e35c03ebc07f77322bdb1b3e3dfb9b5e077f8256a7965", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]     Checking unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.22
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]    Compiling const_format v0.2.24
[INFO] [stderr]    Compiling rust-ad-consts v0.8.0
[INFO] [stderr]    Compiling rust-ad-core-macros v0.8.0
[INFO] [stderr]  Documenting rust-ad-core v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(iter_intersperse)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(adt_const_params)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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 `rust-ad-core`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name rust_ad_core src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=e29a827169cc0c83 -L dependency=/opt/rustwide/target/debug/deps --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-701e134f05ff346a.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-3dd15ba3b73b2472.rmeta --extern rust_ad_consts=/opt/rustwide/target/debug/deps/librust_ad_consts-fa65c1df0697f074.rmeta --extern rust_ad_core_macros=/opt/rustwide/target/debug/deps/librust_ad_core_macros-7e4a2e8969d870ff.so --extern syn=/opt/rustwide/target/debug/deps/libsyn-a98ed1d12c69cb34.rmeta --cap-lints=warn --crate-version 0.8.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ecaacb6c9b76b5170e1e35c03ebc07f77322bdb1b3e3dfb9b5e077f8256a7965", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecaacb6c9b76b5170e1e35c03ebc07f77322bdb1b3e3dfb9b5e077f8256a7965", kill_on_drop: false }`
[INFO] [stdout] ecaacb6c9b76b5170e1e35c03ebc07f77322bdb1b3e3dfb9b5e077f8256a7965