[INFO] fetching crate ruspiro-allocator 0.4.6...
[INFO] documenting ruspiro-allocator-0.4.6 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate ruspiro-allocator 0.4.6 into /workspace/builds/worker-16/source
[INFO] validating manifest of crates.io crate ruspiro-allocator 0.4.6 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] removed /workspace/builds/worker-16/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate ruspiro-allocator 0.4.6
[INFO] finished tweaking crates.io crate ruspiro-allocator 0.4.6
[INFO] tweaked toml for crates.io crate ruspiro-allocator 0.4.6 written to /workspace/builds/worker-16/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rlibc v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] 77647dba786c12c016b2e8da3ec5d9df8e0f4c9ff5292313e69cdd76fe5c3ba4
[INFO] running `Command { std: "docker" "start" "-a" "77647dba786c12c016b2e8da3ec5d9df8e0f4c9ff5292313e69cdd76fe5c3ba4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77647dba786c12c016b2e8da3ec5d9df8e0f4c9ff5292313e69cdd76fe5c3ba4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77647dba786c12c016b2e8da3ec5d9df8e0f4c9ff5292313e69cdd76fe5c3ba4", kill_on_drop: false }`
[INFO] [stdout] 77647dba786c12c016b2e8da3ec5d9df8e0f4c9ff5292313e69cdd76fe5c3ba4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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] d6959ede76a3d01781137be3ffea0a8467b2997af713c8915849085d1caa75d2
[INFO] running `Command { std: "docker" "start" "-a" "d6959ede76a3d01781137be3ffea0a8467b2997af713c8915849085d1caa75d2", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruspiro-allocator v0.4.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rlibc v1.0.0
[INFO] [stderr]  Documenting ruspiro-allocator v0.4.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(alloc_error_handler)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `ruspiro-allocator`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name ruspiro_allocator src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=4a6ce9e01a3c30cb -L dependency=/opt/rustwide/target/debug/deps --extern rlibc=/opt/rustwide/target/debug/deps/librlibc-95061afa2879b4e4.rmeta --cap-lints=warn --crate-version 0.4.6` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d6959ede76a3d01781137be3ffea0a8467b2997af713c8915849085d1caa75d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6959ede76a3d01781137be3ffea0a8467b2997af713c8915849085d1caa75d2", kill_on_drop: false }`
[INFO] [stdout] d6959ede76a3d01781137be3ffea0a8467b2997af713c8915849085d1caa75d2