[INFO] fetching crate oak 0.8.0...
[INFO] documenting oak-0.8.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate oak 0.8.0 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate oak 0.8.0 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 oak 0.8.0
[INFO] finished tweaking crates.io crate oak 0.8.0
[INFO] tweaked toml for crates.io crate oak 0.8.0 written to /workspace/builds/worker-33/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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rust-argon2 v0.8.3
[INFO] [stderr]   Downloaded blake2b_simd v0.5.11
[INFO] [stderr]   Downloaded oak_runtime v0.6.0
[INFO] [stderr]   Downloaded partial v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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] a2fc2b058584254cc6721ecaeff9688c3d870caa435ac378100fdc59f6e5066f
[INFO] running `Command { std: "docker" "start" "-a" "a2fc2b058584254cc6721ecaeff9688c3d870caa435ac378100fdc59f6e5066f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2fc2b058584254cc6721ecaeff9688c3d870caa435ac378100fdc59f6e5066f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2fc2b058584254cc6721ecaeff9688c3d870caa435ac378100fdc59f6e5066f", kill_on_drop: false }`
[INFO] [stdout] a2fc2b058584254cc6721ecaeff9688c3d870caa435ac378100fdc59f6e5066f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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] f5824311c0c3596c0409c9ed0a5ebdc88f2b62e323751758aa3d439363225fb3
[INFO] running `Command { std: "docker" "start" "-a" "f5824311c0c3596c0409c9ed0a5ebdc88f2b62e323751758aa3d439363225fb3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]     Checking unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking partial v0.2.3
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]  Documenting oak v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/liboak/lib.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(proc_macro_diagnostic, proc_macro_span)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/liboak/lib.rs:17:35
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(proc_macro_diagnostic, proc_macro_span)]
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `oak`
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type proc-macro --crate-name oak src/liboak/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b1fa7144b417e67e -L dependency=/opt/rustwide/target/debug/deps --extern partial=/opt/rustwide/target/debug/deps/libpartial-55cf4720e5d12088.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-6d74c96db6246d9c.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-bc2ca1336e394261.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-9b0fd53505c883e7.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.8.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "f5824311c0c3596c0409c9ed0a5ebdc88f2b62e323751758aa3d439363225fb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5824311c0c3596c0409c9ed0a5ebdc88f2b62e323751758aa3d439363225fb3", kill_on_drop: false }`
[INFO] [stdout] f5824311c0c3596c0409c9ed0a5ebdc88f2b62e323751758aa3d439363225fb3