[INFO] fetching crate umm-malloc 0.3.1...
[INFO] documenting umm-malloc-0.3.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate umm-malloc 0.3.1 into /workspace/builds/worker-24/source
[INFO] validating manifest of crates.io crate umm-malloc 0.3.1 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 umm-malloc 0.3.1
[INFO] finished tweaking crates.io crate umm-malloc 0.3.1
[INFO] tweaked toml for crates.io crate umm-malloc 0.3.1 written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] crate crates.io crate umm-malloc 0.3.1 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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] ce5e3a712d4f8539377bf40b160385df10269c6790914e39c798b52b0a65c09b
[INFO] running `Command { std: "docker" "start" "-a" "ce5e3a712d4f8539377bf40b160385df10269c6790914e39c798b52b0a65c09b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce5e3a712d4f8539377bf40b160385df10269c6790914e39c798b52b0a65c09b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce5e3a712d4f8539377bf40b160385df10269c6790914e39c798b52b0a65c09b", kill_on_drop: false }`
[INFO] [stdout] ce5e3a712d4f8539377bf40b160385df10269c6790914e39c798b52b0a65c09b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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] 7aa5d03bc973f6bbbe52c4576114e64a3f9de04896ce0fe492034b20dd59ae9d
[INFO] running `Command { std: "docker" "start" "-a" "7aa5d03bc973f6bbbe52c4576114e64a3f9de04896ce0fe492034b20dd59ae9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling umm-malloc-sys v0.3.1
[INFO] [stderr]  Documenting umm-malloc v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: A critical section cargo feature must be enabled
[INFO] [stdout]    --> src/lib.rs:129:1
[INFO] [stdout]     |
[INFO] [stdout] 129 | compile_error!("A critical section cargo feature must be enabled");
[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] [stderr] error: could not document `umm-malloc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name umm_malloc src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=fa9fc03f06a99157 -L dependency=/opt/rustwide/target/debug/deps --extern umm_malloc_sys=/opt/rustwide/target/debug/deps/libumm_malloc_sys-d350a9812ddc54ce.rmeta --cap-lints=warn --crate-version 0.3.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "7aa5d03bc973f6bbbe52c4576114e64a3f9de04896ce0fe492034b20dd59ae9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aa5d03bc973f6bbbe52c4576114e64a3f9de04896ce0fe492034b20dd59ae9d", kill_on_drop: false }`
[INFO] [stdout] 7aa5d03bc973f6bbbe52c4576114e64a3f9de04896ce0fe492034b20dd59ae9d