[INFO] fetching crate garble 0.0.1...
[INFO] documenting garble-0.0.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate garble 0.0.1 into /workspace/builds/worker-36/source
[INFO] validating manifest of crates.io crate garble 0.0.1 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 garble 0.0.1
[INFO] finished tweaking crates.io crate garble 0.0.1
[INFO] tweaked toml for crates.io crate garble 0.0.1 written to /workspace/builds/worker-36/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] [stderr]     Blocking waiting for file lock on package cache
[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-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 6112a4ff5d8e3e3ac116b16ae68d63d488ec9503130414258fe0f86221345de4
[INFO] running `Command { std: "docker" "start" "-a" "6112a4ff5d8e3e3ac116b16ae68d63d488ec9503130414258fe0f86221345de4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6112a4ff5d8e3e3ac116b16ae68d63d488ec9503130414258fe0f86221345de4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6112a4ff5d8e3e3ac116b16ae68d63d488ec9503130414258fe0f86221345de4", kill_on_drop: false }`
[INFO] [stdout] 6112a4ff5d8e3e3ac116b16ae68d63d488ec9503130414258fe0f86221345de4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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] 5fb259dfa9af861935ce9fdf71e0de0820e5353860c9853e2c505560cb0bfd40
[INFO] running `Command { std: "docker" "start" "-a" "5fb259dfa9af861935ce9fdf71e0de0820e5353860c9853e2c505560cb0bfd40", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]  Documenting garble v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.97s
[INFO] running `Command { std: "docker" "inspect" "5fb259dfa9af861935ce9fdf71e0de0820e5353860c9853e2c505560cb0bfd40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fb259dfa9af861935ce9fdf71e0de0820e5353860c9853e2c505560cb0bfd40", kill_on_drop: false }`
[INFO] [stdout] 5fb259dfa9af861935ce9fdf71e0de0820e5353860c9853e2c505560cb0bfd40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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" "rustdoc" "--lib" "-Zrustdoc-map" "--all-features" "--frozen" "--message-format=json" "--" "--cfg" "docsrs" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] bcf3d85a8ea3364938c8219c805029afb174250c6ec5f5bd8d1ba89fe8795cfb
[INFO] running `Command { std: "docker" "start" "-a" "bcf3d85a8ea3364938c8219c805029afb174250c6ec5f5bd8d1ba89fe8795cfb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]  Documenting garble v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: `#[doc(cfg)]` is experimental
[INFO] [stdout]  --> src/garbler/simple.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[cfg_attr(docsrs, doc(cfg(feature = "simple")))]
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #43781 <https://github.com/rust-lang/rust/issues/43781> for more information
[INFO] [stdout]   = help: add `#![feature(doc_cfg)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `#[doc(cfg)]` is experimental
[INFO] [stdout]   --> src/lib.rs:26:20
[INFO] [stdout]    |
[INFO] [stdout] 26 | #[cfg_attr(docsrs, doc(cfg(feature = "simple")))]
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #43781 <https://github.com/rust-lang/rust/issues/43781> for more information
[INFO] [stdout]    = help: add `#![feature(doc_cfg)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `garble`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name garble src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="rand"' --cfg 'feature="simple"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --cfg docsrs -Z unstable-options --document-private-items -C metadata=94bb2b352bc4555f -L dependency=/opt/rustwide/target/debug/deps --extern paste=/opt/rustwide/target/debug/deps/libpaste-0b64b372909baba4.so --extern rand=/opt/rustwide/target/debug/deps/librand-6a8090bd283c06ae.rmeta --extern-html-root-url 'paste=https://docs.rs/paste/1.0.7/' --extern-html-root-url 'rand=https://docs.rs/rand/0.8.5/' -Zunstable-options --crate-version 0.0.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "bcf3d85a8ea3364938c8219c805029afb174250c6ec5f5bd8d1ba89fe8795cfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcf3d85a8ea3364938c8219c805029afb174250c6ec5f5bd8d1ba89fe8795cfb", kill_on_drop: false }`
[INFO] [stdout] bcf3d85a8ea3364938c8219c805029afb174250c6ec5f5bd8d1ba89fe8795cfb