[INFO] fetching crate pebble 0.8.5...
[INFO] documenting pebble-0.8.5 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate pebble 0.8.5 into /workspace/builds/worker-24/source
[INFO] validating manifest of crates.io crate pebble 0.8.5 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 pebble 0.8.5
[INFO] finished tweaking crates.io crate pebble 0.8.5
[INFO] tweaked toml for crates.io crate pebble 0.8.5 written to /workspace/builds/worker-24/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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] 9c1e7992c2bbd9734359f57355cff85af69fdbf64743066594fdb54783e0a587
[INFO] running `Command { std: "docker" "start" "-a" "9c1e7992c2bbd9734359f57355cff85af69fdbf64743066594fdb54783e0a587", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c1e7992c2bbd9734359f57355cff85af69fdbf64743066594fdb54783e0a587", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c1e7992c2bbd9734359f57355cff85af69fdbf64743066594fdb54783e0a587", kill_on_drop: false }`
[INFO] [stdout] 9c1e7992c2bbd9734359f57355cff85af69fdbf64743066594fdb54783e0a587
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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] 73855c2f985839edca8aa0f93e1254abe9c82789dbd9aeaee979a653b4a20f63
[INFO] running `Command { std: "docker" "start" "-a" "73855c2f985839edca8aa0f93e1254abe9c82789dbd9aeaee979a653b4a20f63", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking recipe-reader v0.9.11
[INFO] [stderr]     Checking lzf v0.3.1
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]  Documenting pebble v0.8.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_remove_item)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `vec_remove_item`
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(vec_remove_item)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `pebble`
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name pebble src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=3736fea52baa385e -L dependency=/opt/rustwide/target/debug/deps --extern ansi_term=/opt/rustwide/target/debug/deps/libansi_term-53e1db2a5e5de76a.rmeta --extern lzf=/opt/rustwide/target/debug/deps/liblzf-e5bcc064d2b67cc6.rmeta --extern recipe_reader=/opt/rustwide/target/debug/deps/librecipe_reader-d810a0902bb5fe55.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-dbdb529db862b224.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-864a219f4e4f97f4.so --extern toml=/opt/rustwide/target/debug/deps/libtoml-2feca227ac6870f4.rmeta --cap-lints=warn --crate-version 0.8.5` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "73855c2f985839edca8aa0f93e1254abe9c82789dbd9aeaee979a653b4a20f63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73855c2f985839edca8aa0f93e1254abe9c82789dbd9aeaee979a653b4a20f63", kill_on_drop: false }`
[INFO] [stdout] 73855c2f985839edca8aa0f93e1254abe9c82789dbd9aeaee979a653b4a20f63