[INFO] fetching crate syntex_bitflags 0.1.0...
[INFO] documenting syntex_bitflags-0.1.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate syntex_bitflags 0.1.0 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate syntex_bitflags 0.1.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syntex_bitflags 0.1.0
[INFO] finished tweaking crates.io crate syntex_bitflags 0.1.0
[INFO] tweaked toml for crates.io crate syntex_bitflags 0.1.0 written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7fcb9d4f2bbd5154be011227a74e431c4444b22fc37eddd06b175313a879af90
[INFO] running `Command { std: "docker" "start" "-a" "7fcb9d4f2bbd5154be011227a74e431c4444b22fc37eddd06b175313a879af90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fcb9d4f2bbd5154be011227a74e431c4444b22fc37eddd06b175313a879af90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fcb9d4f2bbd5154be011227a74e431c4444b22fc37eddd06b175313a879af90", kill_on_drop: false }`
[INFO] [stdout] 7fcb9d4f2bbd5154be011227a74e431c4444b22fc37eddd06b175313a879af90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f21dcba6df115b1e41c22158ebc4065f19d209ee076eb5b68b2b9f304ee9acac
[INFO] running `Command { std: "docker" "start" "-a" "f21dcba6df115b1e41c22158ebc4065f19d209ee076eb5b68b2b9f304ee9acac", kill_on_drop: false }`
[INFO] [stderr]  Documenting syntex_bitflags v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: malformed `unstable` attribute input
[INFO] [stdout]   --> src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![unstable]
[INFO] [stdout]    | ^^^^^^^^^^^^ help: must be of the form: `#![unstable(feature = "name", reason = "...", issue = "N")]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `staged_api` in this scope
[INFO] [stdout]   --> src/lib.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![staged_api]
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0734]: stability attributes may not be used outside of the standard library
[INFO] [stdout]   --> src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![unstable]
[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 E0734`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `syntex_bitflags`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name syntex_bitflags src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f2b8b837a92c6e81 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "f21dcba6df115b1e41c22158ebc4065f19d209ee076eb5b68b2b9f304ee9acac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f21dcba6df115b1e41c22158ebc4065f19d209ee076eb5b68b2b9f304ee9acac", kill_on_drop: false }`
[INFO] [stdout] f21dcba6df115b1e41c22158ebc4065f19d209ee076eb5b68b2b9f304ee9acac