[INFO] fetching crate awint_core 0.4.0...
[INFO] documenting awint_core-0.4.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate awint_core 0.4.0 into /workspace/builds/worker-72/source
[INFO] validating manifest of crates.io crate awint_core 0.4.0 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 awint_core 0.4.0
[INFO] finished tweaking crates.io crate awint_core 0.4.0
[INFO] tweaked toml for crates.io crate awint_core 0.4.0 written to /workspace/builds/worker-72/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] [stderr]     Blocking waiting for file lock on package cache
[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 rand_xoshiro v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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] 2f62fe4f6c0fd481cf1c838cc9f1b35e26b33851146612e5630436094669804f
[INFO] running `Command { std: "docker" "start" "-a" "2f62fe4f6c0fd481cf1c838cc9f1b35e26b33851146612e5630436094669804f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f62fe4f6c0fd481cf1c838cc9f1b35e26b33851146612e5630436094669804f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f62fe4f6c0fd481cf1c838cc9f1b35e26b33851146612e5630436094669804f", kill_on_drop: false }`
[INFO] [stdout] 2f62fe4f6c0fd481cf1c838cc9f1b35e26b33851146612e5630436094669804f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-72/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] efda0a8763f55585d0b7b47a1da84bfc7f841eea5ea2fb046873ea0cba623fd6
[INFO] running `Command { std: "docker" "start" "-a" "efda0a8763f55585d0b7b47a1da84bfc7f841eea5ea2fb046873ea0cba623fd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling const_fn v0.4.9
[INFO] [stderr]     Checking awint_internals v0.4.0
[INFO] [stderr]  Documenting awint_core v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:12:40
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![cfg_attr(feature = "const_support", feature(const_maybe_uninit_as_mut_ptr))]
[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:13:40
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![cfg_attr(feature = "const_support", feature(const_mut_refs))]
[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:14:40
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![cfg_attr(feature = "const_support", feature(const_ptr_read))]
[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:15:40
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![cfg_attr(feature = "const_support", feature(const_ptr_write))]
[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:16:40
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![cfg_attr(feature = "const_support", feature(const_intrinsic_copy))]
[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:17:40
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![cfg_attr(feature = "const_support", feature(const_slice_from_raw_parts))]
[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:18:40
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![cfg_attr(feature = "const_support", feature(const_swap))]
[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:19:40
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![cfg_attr(feature = "const_support", feature(const_option))]
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 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 `awint_core`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name awint_core src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="const_support"' --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a471c6c2f996af07 -L dependency=/opt/rustwide/target/debug/deps --extern awint_internals=/opt/rustwide/target/debug/deps/libawint_internals-88ed82217f2ab8e6.rmeta --extern const_fn=/opt/rustwide/target/debug/deps/libconst_fn-6bc3dd0a445a5371.so --cap-lints=warn --crate-version 0.4.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "efda0a8763f55585d0b7b47a1da84bfc7f841eea5ea2fb046873ea0cba623fd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efda0a8763f55585d0b7b47a1da84bfc7f841eea5ea2fb046873ea0cba623fd6", kill_on_drop: false }`
[INFO] [stdout] efda0a8763f55585d0b7b47a1da84bfc7f841eea5ea2fb046873ea0cba623fd6