[INFO] fetching crate async-buf 0.1.0...
[INFO] documenting async-buf-0.1.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate async-buf 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate async-buf 0.1.0 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 async-buf 0.1.0
[INFO] finished tweaking crates.io crate async-buf 0.1.0
[INFO] tweaked toml for crates.io crate async-buf 0.1.0 written to /workspace/builds/worker-6-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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 8dc3b9a90ee3ef6a1e9a9fa6c909caaa4b362e3a16e5c5cc78dcb4dd5f20016c
[INFO] running `Command { std: "docker" "start" "-a" "8dc3b9a90ee3ef6a1e9a9fa6c909caaa4b362e3a16e5c5cc78dcb4dd5f20016c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dc3b9a90ee3ef6a1e9a9fa6c909caaa4b362e3a16e5c5cc78dcb4dd5f20016c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dc3b9a90ee3ef6a1e9a9fa6c909caaa4b362e3a16e5c5cc78dcb4dd5f20016c", kill_on_drop: false }`
[INFO] [stdout] 8dc3b9a90ee3ef6a1e9a9fa6c909caaa4b362e3a16e5c5cc78dcb4dd5f20016c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] e2243ea8aa2f69a60381a30ec04ddeb83f6a7e210f57844953d9ae7d4c38293b
[INFO] running `Command { std: "docker" "start" "-a" "e2243ea8aa2f69a60381a30ec04ddeb83f6a7e210f57844953d9ae7d4c38293b", kill_on_drop: false }`
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]    Compiling crossbeam-utils v0.8.18
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling rustix v0.37.27
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking waker-fn v1.1.1
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking parking v2.2.0
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking async-lock v2.8.0
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking socket2 v0.4.10
[INFO] [stderr]     Checking concurrent-queue v2.4.0
[INFO] [stderr]  Documenting async-buf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(new_uninit)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(poll_ready)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `poll_ready`
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(poll_ready)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `BufRead::fill_buf`
[INFO] [stdout]    --> src/buf_reader.rs:167:23
[INFO] [stdout]     |
[INFO] [stdout] 167 |     /// [`fill_buf`]: BufRead::fill_buf
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^ no item named `BufRead` in scope
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `async-buf`
[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 async_buf src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=83393c0a8dbc039b -L dependency=/opt/rustwide/target/debug/deps --extern async_io=/opt/rustwide/target/debug/deps/libasync_io-77e194b32a50f1eb.rmeta --extern futures_io=/opt/rustwide/target/debug/deps/libfutures_io-e3542cd7b2e84680.rmeta --extern futures_lite=/opt/rustwide/target/debug/deps/libfutures_lite-e0b67ce630bdead4.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-a52591f63adb7509.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e2243ea8aa2f69a60381a30ec04ddeb83f6a7e210f57844953d9ae7d4c38293b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2243ea8aa2f69a60381a30ec04ddeb83f6a7e210f57844953d9ae7d4c38293b", kill_on_drop: false }`
[INFO] [stdout] e2243ea8aa2f69a60381a30ec04ddeb83f6a7e210f57844953d9ae7d4c38293b
