[INFO] fetching crate autoproto 0.1.2...
[INFO] documenting autoproto-0.1.2 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate autoproto 0.1.2 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate autoproto 0.1.2 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prost-derive v0.8.0
[INFO] [stderr]   Downloaded quickcheck_macros v1.0.0
[INFO] [stderr]   Downloaded autoproto-derive v0.1.0
[INFO] [stderr]   Downloaded prost v0.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15dd414b8ead8624022d55a24db1aae75cd0edc9986c350e55cb7998aa781414
[INFO] running `Command { std: "docker" "start" "-a" "15dd414b8ead8624022d55a24db1aae75cd0edc9986c350e55cb7998aa781414", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15dd414b8ead8624022d55a24db1aae75cd0edc9986c350e55cb7998aa781414", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15dd414b8ead8624022d55a24db1aae75cd0edc9986c350e55cb7998aa781414", kill_on_drop: false }`
[INFO] [stdout] 15dd414b8ead8624022d55a24db1aae75cd0edc9986c350e55cb7998aa781414
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86c956e44e533834c08baab67b9d245714dd114c6d93c24f26a5966a7fadec51
[INFO] running `Command { std: "docker" "start" "-a" "86c956e44e533834c08baab67b9d245714dd114c6d93c24f26a5966a7fadec51", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]    Compiling anyhow v1.0.79
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v1.0.109
[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 stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_associated_types)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `generic_associated_types` has been stable since `1.65.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[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: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/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=69deb2a06a6c08ed -L dependency=/opt/rustwide/target/debug/deps --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-d5dc28e70d1ba472.rmeta --extern autoproto_derive=/opt/rustwide/target/debug/deps/libautoproto_derive-a4e4ac1c1bf0f96f.so --extern prost=/opt/rustwide/target/debug/deps/libprost-f8f174d7024ab175.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-2a5789612b770a89.rmeta --extern static_assertions=/opt/rustwide/target/debug/deps/libstatic_assertions-e6a2a0c27a403d56.rmeta --cap-lints=warn --crate-version 0.1.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "86c956e44e533834c08baab67b9d245714dd114c6d93c24f26a5966a7fadec51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86c956e44e533834c08baab67b9d245714dd114c6d93c24f26a5966a7fadec51", kill_on_drop: false }`
[INFO] [stdout] 86c956e44e533834c08baab67b9d245714dd114c6d93c24f26a5966a7fadec51
