[INFO] fetching crate elias_fano_rust 0.1.1...
[INFO] documenting elias_fano_rust-0.1.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate elias_fano_rust 0.1.1 into /workspace/builds/worker-69/source
[INFO] validating manifest of crates.io crate elias_fano_rust 0.1.1 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 elias_fano_rust 0.1.1
[INFO] finished tweaking crates.io crate elias_fano_rust 0.1.1
[INFO] tweaked toml for crates.io crate elias_fano_rust 0.1.1 written to /workspace/builds/worker-69/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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] 60aa438c7fe76d65db4ae9a144bdfa20b2817bb2103d82af1f79e334da6bc509
[INFO] running `Command { std: "docker" "start" "-a" "60aa438c7fe76d65db4ae9a144bdfa20b2817bb2103d82af1f79e334da6bc509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60aa438c7fe76d65db4ae9a144bdfa20b2817bb2103d82af1f79e334da6bc509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60aa438c7fe76d65db4ae9a144bdfa20b2817bb2103d82af1f79e334da6bc509", kill_on_drop: false }`
[INFO] [stdout] 60aa438c7fe76d65db4ae9a144bdfa20b2817bb2103d82af1f79e334da6bc509
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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] f2448b3d7d997536c00c836cff52f79905a767e8d6eb828ec1c18b99b5ff7c10
[INFO] running `Command { std: "docker" "start" "-a" "f2448b3d7d997536c00c836cff52f79905a767e8d6eb828ec1c18b99b5ff7c10", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]  Documenting elias_fano_rust v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(core_intrinsics)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]    --> src/simple_select/iter.rs:101:51
[INFO] [stdout]     |
[INFO] [stdout] 101 |     /// The iteration code takes inspiration from https://lemire.me/blog/2018/02/21/iterating-over-set-bits-quickly/
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://lemire.me/blog/2018/02/21/iterating-over-set-bits-quickly/>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning 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 `elias_fano_rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name elias_fano_rust src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=4c79d3a0afc5a2d3 -L dependency=/opt/rustwide/target/debug/deps --extern rayon=/opt/rustwide/target/debug/deps/librayon-6db580ae2ab9e934.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "f2448b3d7d997536c00c836cff52f79905a767e8d6eb828ec1c18b99b5ff7c10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2448b3d7d997536c00c836cff52f79905a767e8d6eb828ec1c18b99b5ff7c10", kill_on_drop: false }`
[INFO] [stdout] f2448b3d7d997536c00c836cff52f79905a767e8d6eb828ec1c18b99b5ff7c10