[INFO] fetching crate taskio 0.1.0-alpha-1...
[INFO] documenting taskio-0.1.0-alpha-1 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate taskio 0.1.0-alpha-1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate taskio 0.1.0-alpha-1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate taskio 0.1.0-alpha-1
[INFO] finished tweaking crates.io crate taskio 0.1.0-alpha-1
[INFO] tweaked toml for crates.io crate taskio 0.1.0-alpha-1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fdb5b5b269ab3c1e81ac97f595e229f42ca53d98a0619587c71af0962d604abc
[INFO] running `Command { std: "docker" "start" "-a" "fdb5b5b269ab3c1e81ac97f595e229f42ca53d98a0619587c71af0962d604abc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fdb5b5b269ab3c1e81ac97f595e229f42ca53d98a0619587c71af0962d604abc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdb5b5b269ab3c1e81ac97f595e229f42ca53d98a0619587c71af0962d604abc", kill_on_drop: false }`
[INFO] [stdout] fdb5b5b269ab3c1e81ac97f595e229f42ca53d98a0619587c71af0962d604abc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9e84b0b726e1b442eeb323781dc6178b8dc35d6bd5ff1c51ebc84560537caea
[INFO] running `Command { std: "docker" "start" "-a" "d9e84b0b726e1b442eeb323781dc6178b8dc35d6bd5ff1c51ebc84560537caea", kill_on_drop: false }`
[INFO] [stderr]  Documenting taskio v0.1.0-alpha-1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/taskio/index.html
[INFO] running `Command { std: "docker" "inspect" "d9e84b0b726e1b442eeb323781dc6178b8dc35d6bd5ff1c51ebc84560537caea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9e84b0b726e1b442eeb323781dc6178b8dc35d6bd5ff1c51ebc84560537caea", kill_on_drop: false }`
[INFO] [stdout] d9e84b0b726e1b442eeb323781dc6178b8dc35d6bd5ff1c51ebc84560537caea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "rustdoc" "--lib" "-Zrustdoc-map" "--all-features" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 428d2d2216532e97c345ee06df6628b48925584640a803451efb2ced5ba3fe5a
[INFO] running `Command { std: "docker" "start" "-a" "428d2d2216532e97c345ee06df6628b48925584640a803451efb2ced5ba3fe5a", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]  Documenting taskio v0.1.0-alpha-1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:8:45
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![cfg_attr(feature = "generators", feature(generators, generator_trait))]
[INFO] [stdout]   |                                             ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: renamed to `coroutines`
[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 E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `taskio`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name taskio src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="full"' --cfg 'feature="generators"' --cfg 'feature="nb"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat -C metadata=de57c3ce6fd6c197 -L dependency=/opt/rustwide/target/debug/deps --extern nb=/opt/rustwide/target/debug/deps/libnb-5229b0eb9944f8f8.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-a52591f63adb7509.rmeta --extern pin_utils=/opt/rustwide/target/debug/deps/libpin_utils-38cc9786f592813e.rmeta --extern-html-root-url 'nb=https://docs.rs/nb/1.1.0/' --extern-html-root-url 'pin_project_lite=https://docs.rs/pin-project-lite/0.2.13/' --extern-html-root-url 'pin_utils=https://docs.rs/pin-utils/0.1.0/' -Zunstable-options --cap-lints=warn --crate-version 0.1.0-alpha-1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "428d2d2216532e97c345ee06df6628b48925584640a803451efb2ced5ba3fe5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "428d2d2216532e97c345ee06df6628b48925584640a803451efb2ced5ba3fe5a", kill_on_drop: false }`
[INFO] [stdout] 428d2d2216532e97c345ee06df6628b48925584640a803451efb2ced5ba3fe5a
