[INFO] fetching crate eiz 0.3.0...
[INFO] documenting eiz-0.3.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate eiz 0.3.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate eiz 0.3.0 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 eiz 0.3.0
[INFO] finished tweaking crates.io crate eiz 0.3.0
[INFO] tweaked toml for crates.io crate eiz 0.3.0 written to /workspace/builds/worker-2-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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking_lot_core v0.7.3
[INFO] [stderr]   Downloaded parking_lot v0.10.2
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae8910a50066010eeaaff4fb429eeea61e9e9419df4efac19c1e28af01d36367
[INFO] running `Command { std: "docker" "start" "-a" "ae8910a50066010eeaaff4fb429eeea61e9e9419df4efac19c1e28af01d36367", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae8910a50066010eeaaff4fb429eeea61e9e9419df4efac19c1e28af01d36367", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae8910a50066010eeaaff4fb429eeea61e9e9419df4efac19c1e28af01d36367", kill_on_drop: false }`
[INFO] [stdout] ae8910a50066010eeaaff4fb429eeea61e9e9419df4efac19c1e28af01d36367
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/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] ac0455f25b3b9d84b789f339a2a434de155d456c2e0ee05725a4fd3feb9cb5e9
[INFO] running `Command { std: "docker" "start" "-a" "ac0455f25b3b9d84b789f339a2a434de155d456c2e0ee05725a4fd3feb9cb5e9", kill_on_drop: false }`
[INFO] [stderr]     Checking parking_lot_core v0.7.3
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]  Documenting eiz v0.3.0 (/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(alloc_layout_extra, maybe_uninit_extra)]
[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:2:32
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(alloc_layout_extra, maybe_uninit_extra)]
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^^
[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 `eiz`
[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=2018 --crate-type lib --crate-name eiz src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="parking_lot"' --cfg 'feature="rt_queue"' --cfg 'feature="rt_queue_std"' --cfg 'feature="use_std"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0d6ede0a0a35b457 -L dependency=/opt/rustwide/target/debug/deps --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-58244fd6dc030f2d.rmeta --cap-lints=warn --crate-version 0.3.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ac0455f25b3b9d84b789f339a2a434de155d456c2e0ee05725a4fd3feb9cb5e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac0455f25b3b9d84b789f339a2a434de155d456c2e0ee05725a4fd3feb9cb5e9", kill_on_drop: false }`
[INFO] [stdout] ac0455f25b3b9d84b789f339a2a434de155d456c2e0ee05725a4fd3feb9cb5e9
