[INFO] fetching crate target-cpu-macro 0.1.3...
[INFO] documenting target-cpu-macro-0.1.3 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate target-cpu-macro 0.1.3 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate target-cpu-macro 0.1.3 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 target-cpu-macro 0.1.3
[INFO] finished tweaking crates.io crate target-cpu-macro 0.1.3
[INFO] tweaked toml for crates.io crate target-cpu-macro 0.1.3 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate target-cpu-macro 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] b3e9608d1fc4b229499d488a174966e9b19bb1a35fd90791910e364e8af4bfb5
[INFO] running `Command { std: "docker" "start" "-a" "b3e9608d1fc4b229499d488a174966e9b19bb1a35fd90791910e364e8af4bfb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3e9608d1fc4b229499d488a174966e9b19bb1a35fd90791910e364e8af4bfb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3e9608d1fc4b229499d488a174966e9b19bb1a35fd90791910e364e8af4bfb5", kill_on_drop: false }`
[INFO] [stdout] b3e9608d1fc4b229499d488a174966e9b19bb1a35fd90791910e364e8af4bfb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 02fc02e114c869b71023e04ddd3c5bfa2dda81ec176dcb24f327ff49147dd5f2
[INFO] running `Command { std: "docker" "start" "-a" "02fc02e114c869b71023e04ddd3c5bfa2dda81ec176dcb24f327ff49147dd5f2", kill_on_drop: false }`
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]     Checking target-cpu-fetch v0.1.3
[INFO] [stderr]  Documenting target-cpu-macro v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(proc_macro_hygiene)]
[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 `target-cpu-macro`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type proc-macro --crate-name target_cpu_macro src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=cf96341fe52f79e4 -L dependency=/opt/rustwide/target/debug/deps --extern json=/opt/rustwide/target/debug/deps/libjson-3828c31f626ec64f.rmeta --extern target_cpu_fetch=/opt/rustwide/target/debug/deps/libtarget_cpu_fetch-56d4fd37944ed426.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.1.3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "02fc02e114c869b71023e04ddd3c5bfa2dda81ec176dcb24f327ff49147dd5f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02fc02e114c869b71023e04ddd3c5bfa2dda81ec176dcb24f327ff49147dd5f2", kill_on_drop: false }`
[INFO] [stdout] 02fc02e114c869b71023e04ddd3c5bfa2dda81ec176dcb24f327ff49147dd5f2