[INFO] fetching crate cl-generic-vec 0.4.0...
[INFO] documenting cl-generic-vec-0.4.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate cl-generic-vec 0.4.0 into /workspace/builds/worker-18/source
[INFO] validating manifest of crates.io crate cl-generic-vec 0.4.0 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 cl-generic-vec 0.4.0
[INFO] finished tweaking crates.io crate cl-generic-vec 0.4.0
[INFO] tweaked toml for crates.io crate cl-generic-vec 0.4.0 written to /workspace/builds/worker-18/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-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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] dddc5ceae2fafbc2aa83ecd5f44c1f1c0613a409f23c627859333ccf3593470f
[INFO] running `Command { std: "docker" "start" "-a" "dddc5ceae2fafbc2aa83ecd5f44c1f1c0613a409f23c627859333ccf3593470f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dddc5ceae2fafbc2aa83ecd5f44c1f1c0613a409f23c627859333ccf3593470f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dddc5ceae2fafbc2aa83ecd5f44c1f1c0613a409f23c627859333ccf3593470f", kill_on_drop: false }`
[INFO] [stdout] dddc5ceae2fafbc2aa83ecd5f44c1f1c0613a409f23c627859333ccf3593470f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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] e8a39f200c7b689ef903697000d9d1ef1fb2c05cee85544b7dd11fb20d1deb3f
[INFO] running `Command { std: "docker" "start" "-a" "e8a39f200c7b689ef903697000d9d1ef1fb2c05cee85544b7dd11fb20d1deb3f", kill_on_drop: false }`
[INFO] [stderr]  Documenting cl-generic-vec v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | /     feature(
[INFO] [stdout] 5  | |         trusted_len,
[INFO] [stdout] 6  | |         min_specialization,
[INFO] [stdout] 7  | |         exact_size_is_empty,
[INFO] [stdout] ...  |
[INFO] [stdout] 13 | |         ptr_metadata,
[INFO] [stdout] 14 | |     )
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `const_fn_trait_bound` has been stable since 1.61.0 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 `cl-generic-vec`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name cl_generic_vec src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="alloc"' --cfg 'feature="default"' --cfg 'feature="std"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=1b257b12fa9cc004 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.4.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e8a39f200c7b689ef903697000d9d1ef1fb2c05cee85544b7dd11fb20d1deb3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8a39f200c7b689ef903697000d9d1ef1fb2c05cee85544b7dd11fb20d1deb3f", kill_on_drop: false }`
[INFO] [stdout] e8a39f200c7b689ef903697000d9d1ef1fb2c05cee85544b7dd11fb20d1deb3f