[INFO] fetching crate mcproto-rs 0.2.0...
[INFO] documenting mcproto-rs-0.2.0 against beta-2023-04-20 for beta-1.70-rustdoc-1
[INFO] extracting crate mcproto-rs 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate mcproto-rs 0.2.0 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mcproto-rs 0.2.0
[INFO] finished tweaking crates.io crate mcproto-rs 0.2.0
[INFO] tweaked toml for crates.io crate mcproto-rs 0.2.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24c50f9b031e6698bfaefe523ece0ea4c1a81e1db759fa003553105526fbbe09
[INFO] running `Command { std: "docker" "start" "-a" "24c50f9b031e6698bfaefe523ece0ea4c1a81e1db759fa003553105526fbbe09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24c50f9b031e6698bfaefe523ece0ea4c1a81e1db759fa003553105526fbbe09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24c50f9b031e6698bfaefe523ece0ea4c1a81e1db759fa003553105526fbbe09", kill_on_drop: false }`
[INFO] [stdout] 24c50f9b031e6698bfaefe523ece0ea4c1a81e1db759fa003553105526fbbe09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91ba1489ad3a01205bafbb601a4e06debc3a9a015cd1a60a37e9e9897ee2321e
[INFO] running `Command { std: "docker" "start" "-a" "91ba1489ad3a01205bafbb601a4e06debc3a9a015cd1a60a37e9e9897ee2321e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]  Documenting mcproto-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:40
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "bench", feature(test))]
[INFO] [stdout]   |                                        ^^^^
[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 `mcproto-rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name mcproto_rs src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="bench"' --cfg 'feature="default"' --cfg 'feature="rand"' --cfg 'feature="std"' --cfg 'feature="v1_15_2"' --cfg 'feature="v1_16_3"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=fe763f04582cc1b8 -L dependency=/opt/rustwide/target/debug/deps --extern base64=/opt/rustwide/target/debug/deps/libbase64-47cbac9bf4c4d4c1.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-55a16c2f3d01cb37.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-826cc3e309aa8d02.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-29fa3c53533e296d.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "91ba1489ad3a01205bafbb601a4e06debc3a9a015cd1a60a37e9e9897ee2321e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91ba1489ad3a01205bafbb601a4e06debc3a9a015cd1a60a37e9e9897ee2321e", kill_on_drop: false }`
[INFO] [stdout] 91ba1489ad3a01205bafbb601a4e06debc3a9a015cd1a60a37e9e9897ee2321e
