[INFO] fetching crate blissb 0.2.3...
[INFO] documenting blissb-0.2.3 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate blissb 0.2.3 into /workspace/builds/worker-74/source
[INFO] validating manifest of crates.io crate blissb 0.2.3 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 blissb 0.2.3
[INFO] finished tweaking crates.io crate blissb 0.2.3
[INFO] tweaked toml for crates.io crate blissb 0.2.3 written to /workspace/builds/worker-74/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-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] fd617ee0121eed61234ea6adf1c9b89d6bcf605412493381ddf1c18aac7be4be
[INFO] running `Command { std: "docker" "start" "-a" "fd617ee0121eed61234ea6adf1c9b89d6bcf605412493381ddf1c18aac7be4be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd617ee0121eed61234ea6adf1c9b89d6bcf605412493381ddf1c18aac7be4be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd617ee0121eed61234ea6adf1c9b89d6bcf605412493381ddf1c18aac7be4be", kill_on_drop: false }`
[INFO] [stdout] fd617ee0121eed61234ea6adf1c9b89d6bcf605412493381ddf1c18aac7be4be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] efb619646912cb45d150c14fe8b660b82afd321f80b4f6a17959190c2b2ddf93
[INFO] running `Command { std: "docker" "start" "-a" "efb619646912cb45d150c14fe8b660b82afd321f80b4f6a17959190c2b2ddf93", kill_on_drop: false }`
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking bitpack v0.2.1
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tiny-keccak v1.5.0
[INFO] [stderr]  Documenting blissb v0.2.3 (/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(iterator_step_by)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `blissb`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name blissb src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="i"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a84c62c898d71556 -L dependency=/opt/rustwide/target/debug/deps --extern bitpack=/opt/rustwide/target/debug/deps/libbitpack-c77d01f1df28b328.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-21d0a7105b7fc30b.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-86d75e284ff39b5d.rmeta --extern tiny_keccak=/opt/rustwide/target/debug/deps/libtiny_keccak-f27ea4491b91cd6f.rmeta --cap-lints=warn --crate-version 0.2.3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "efb619646912cb45d150c14fe8b660b82afd321f80b4f6a17959190c2b2ddf93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efb619646912cb45d150c14fe8b660b82afd321f80b4f6a17959190c2b2ddf93", kill_on_drop: false }`
[INFO] [stdout] efb619646912cb45d150c14fe8b660b82afd321f80b4f6a17959190c2b2ddf93