[INFO] fetching crate seastar 0.2.0...
[INFO] documenting seastar-0.2.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate seastar 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate seastar 0.2.0 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate seastar 0.2.0
[INFO] finished tweaking crates.io crate seastar 0.2.0
[INFO] tweaked toml for crates.io crate seastar 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate seastar 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v2.0.7
[INFO] [stderr]   Downloaded iridescent v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5833a275d91f12f575ed587eb6ad89da8c8fbc8b8a26e826b3d32d0a4bffa08c
[INFO] running `Command { std: "docker" "start" "-a" "5833a275d91f12f575ed587eb6ad89da8c8fbc8b8a26e826b3d32d0a4bffa08c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5833a275d91f12f575ed587eb6ad89da8c8fbc8b8a26e826b3d32d0a4bffa08c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5833a275d91f12f575ed587eb6ad89da8c8fbc8b8a26e826b3d32d0a4bffa08c", kill_on_drop: false }`
[INFO] [stdout] 5833a275d91f12f575ed587eb6ad89da8c8fbc8b8a26e826b3d32d0a4bffa08c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98d38bbbc0544a2bc18496950620b16d4a527ed1e0a436b98c0c318a8e5bce2a
[INFO] running `Command { std: "docker" "start" "-a" "98d38bbbc0544a2bc18496950620b16d4a527ed1e0a436b98c0c318a8e5bce2a", kill_on_drop: false }`
[INFO] [stderr]  Documenting seastar v0.2.0 (/opt/rustwide/workdir)
[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(binary_heap_retain)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `seastar`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name seastar src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3cc2e5bec4319610 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "98d38bbbc0544a2bc18496950620b16d4a527ed1e0a436b98c0c318a8e5bce2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98d38bbbc0544a2bc18496950620b16d4a527ed1e0a436b98c0c318a8e5bce2a", kill_on_drop: false }`
[INFO] [stdout] 98d38bbbc0544a2bc18496950620b16d4a527ed1e0a436b98c0c318a8e5bce2a
