[INFO] fetching crate monoio 0.0.4...
[INFO] documenting monoio-0.0.4 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate monoio 0.0.4 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate monoio 0.0.4 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] started tweaking crates.io crate monoio 0.0.4
[INFO] finished tweaking crates.io crate monoio 0.0.4
[INFO] tweaked toml for crates.io crate monoio 0.0.4 written to /workspace/builds/worker-28/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 flume v0.10.12
[INFO] [stderr]   Downloaded nanorand v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 5a1603040677a6220f81a962a06e0d9e22463cb7367ceaa21ef98d363f1388a5
[INFO] running `Command { std: "docker" "start" "-a" "5a1603040677a6220f81a962a06e0d9e22463cb7367ceaa21ef98d363f1388a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a1603040677a6220f81a962a06e0d9e22463cb7367ceaa21ef98d363f1388a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a1603040677a6220f81a962a06e0d9e22463cb7367ceaa21ef98d363f1388a5", kill_on_drop: false }`
[INFO] [stdout] 5a1603040677a6220f81a962a06e0d9e22463cb7367ceaa21ef98d363f1388a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 8c6c2989e592d6291fd5162ec7ef59bfa138f21f594c44c46b93861d84ce24f3
[INFO] running `Command { std: "docker" "start" "-a" "8c6c2989e592d6291fd5162ec7ef59bfa138f21f594c44c46b93861d84ce24f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling io-uring v0.5.2
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking os_socketaddr v0.2.1
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling monoio-macros v0.0.2
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]  Documenting monoio v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(generic_associated_types)]
[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:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(type_alias_impl_trait)]
[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:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(box_into_inner)]
[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:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(io_error_more)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 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 `monoio`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name monoio src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="async-cancel"' --cfg 'feature="bytes"' --cfg 'feature="default"' --cfg 'feature="macros"' --cfg 'feature="monoio-macros"' --cfg 'feature="nix"' --cfg 'feature="utils"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=8af0dfdc7f773cd9 -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-57de1f6d7c9c6f6c.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-1879e3f77b1a96be.rmeta --extern fxhash=/opt/rustwide/target/debug/deps/libfxhash-0d7fc89158955c8d.rmeta --extern io_uring=/opt/rustwide/target/debug/deps/libio_uring-df14c3973baaef8e.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-0c9090286a281d3a.rmeta --extern monoio_macros=/opt/rustwide/target/debug/deps/libmonoio_macros-a0a00201bc31dcb3.so --extern nix=/opt/rustwide/target/debug/deps/libnix-3c35de7a179f434e.rmeta --extern os_socketaddr=/opt/rustwide/target/debug/deps/libos_socketaddr-f57a7b524708314e.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-ea3d2cf69622cc1e.rmeta --extern pin_utils=/opt/rustwide/target/debug/deps/libpin_utils-88dc719c123778e1.rmeta --extern scoped_tls=/opt/rustwide/target/debug/deps/libscoped_tls-67676a7209612300.rmeta --extern socket2=/opt/rustwide/target/debug/deps/libsocket2-19308b70ea120c01.rmeta --cap-lints=warn --crate-version 0.0.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "8c6c2989e592d6291fd5162ec7ef59bfa138f21f594c44c46b93861d84ce24f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c6c2989e592d6291fd5162ec7ef59bfa138f21f594c44c46b93861d84ce24f3", kill_on_drop: false }`
[INFO] [stdout] 8c6c2989e592d6291fd5162ec7ef59bfa138f21f594c44c46b93861d84ce24f3