[INFO] fetching crate thinnable 0.3.3...
[INFO] documenting thinnable-0.3.3 against beta-2023-04-20 for beta-1.70-rustdoc-1
[INFO] extracting crate thinnable 0.3.3 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate thinnable 0.3.3 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 thinnable 0.3.3
[INFO] finished tweaking crates.io crate thinnable 0.3.3
[INFO] tweaked toml for crates.io crate thinnable 0.3.3 written to /workspace/builds/worker-0-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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] eae915c5abd05afd6dc3b1c47f09a0f611f56a73dc8d8995c81bd66069cd4dd2
[INFO] running `Command { std: "docker" "start" "-a" "eae915c5abd05afd6dc3b1c47f09a0f611f56a73dc8d8995c81bd66069cd4dd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eae915c5abd05afd6dc3b1c47f09a0f611f56a73dc8d8995c81bd66069cd4dd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eae915c5abd05afd6dc3b1c47f09a0f611f56a73dc8d8995c81bd66069cd4dd2", kill_on_drop: false }`
[INFO] [stdout] eae915c5abd05afd6dc3b1c47f09a0f611f56a73dc8d8995c81bd66069cd4dd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 629374dadc76a1784384bd80f46e3864cac3e2229ac8fc32132585b03f3767bb
[INFO] running `Command { std: "docker" "start" "-a" "629374dadc76a1784384bd80f46e3864cac3e2229ac8fc32132585b03f3767bb", kill_on_drop: false }`
[INFO] [stderr]  Documenting thinnable v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:44
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(any(feature = "fn-refs", doc), feature(fn_traits, unboxed_closures))]
[INFO] [stdout]   |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(doc_cfg, ptr_metadata, unsize)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 `thinnable`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name thinnable src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=798d667e10886a34 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.3.3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "629374dadc76a1784384bd80f46e3864cac3e2229ac8fc32132585b03f3767bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "629374dadc76a1784384bd80f46e3864cac3e2229ac8fc32132585b03f3767bb", kill_on_drop: false }`
[INFO] [stdout] 629374dadc76a1784384bd80f46e3864cac3e2229ac8fc32132585b03f3767bb
