[INFO] fetching crate autoproto 0.1.2...
[INFO] documenting autoproto-0.1.2 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate autoproto 0.1.2 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate autoproto 0.1.2 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate autoproto 0.1.2
[INFO] finished tweaking crates.io crate autoproto 0.1.2
[INFO] tweaked toml for crates.io crate autoproto 0.1.2 written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1f1588ddd2c5ecc94cbf3e0bb2bc47617cfb0fc59187472e8b8c1da568adf65
[INFO] running `Command { std: "docker" "start" "-a" "f1f1588ddd2c5ecc94cbf3e0bb2bc47617cfb0fc59187472e8b8c1da568adf65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1f1588ddd2c5ecc94cbf3e0bb2bc47617cfb0fc59187472e8b8c1da568adf65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1f1588ddd2c5ecc94cbf3e0bb2bc47617cfb0fc59187472e8b8c1da568adf65", kill_on_drop: false }`
[INFO] [stdout] f1f1588ddd2c5ecc94cbf3e0bb2bc47617cfb0fc59187472e8b8c1da568adf65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4adec8b50d8e8d1d47c62442bbd2cef959f9f0b524248baf6658af4618d87cd0
[INFO] running `Command { std: "docker" "start" "-a" "4adec8b50d8e8d1d47c62442bbd2cef959f9f0b524248baf6658af4618d87cd0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling prost-derive v0.8.0
[INFO] [stderr]    Compiling autoproto-derive v0.1.0
[INFO] [stderr]     Checking prost v0.8.0
[INFO] [stderr]  Documenting autoproto v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_associated_types)]
[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 `autoproto`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name autoproto src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="arrayvec"' --cfg 'feature="default"' --cfg 'feature="smallvec"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b3b79a76cbbb328d -L dependency=/opt/rustwide/target/debug/deps --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-06aa62afea35b94e.rmeta --extern autoproto_derive=/opt/rustwide/target/debug/deps/libautoproto_derive-19fc1eff732aeffe.so --extern prost=/opt/rustwide/target/debug/deps/libprost-72212da8d77ff65e.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-ff6006ac5a7457f8.rmeta --extern static_assertions=/opt/rustwide/target/debug/deps/libstatic_assertions-0676c5c55130f395.rmeta --cap-lints=warn --crate-version 0.1.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "4adec8b50d8e8d1d47c62442bbd2cef959f9f0b524248baf6658af4618d87cd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4adec8b50d8e8d1d47c62442bbd2cef959f9f0b524248baf6658af4618d87cd0", kill_on_drop: false }`
[INFO] [stdout] 4adec8b50d8e8d1d47c62442bbd2cef959f9f0b524248baf6658af4618d87cd0