[INFO] fetching crate umm-malloc 0.3.2...
[INFO] documenting umm-malloc-0.3.2 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate umm-malloc 0.3.2 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate umm-malloc 0.3.2 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate umm-malloc 0.3.2
[INFO] finished tweaking crates.io crate umm-malloc 0.3.2
[INFO] tweaked toml for crates.io crate umm-malloc 0.3.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate umm-malloc 0.3.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded umm-malloc-sys v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 287ced6c84b7b710bd3125a8f818b69d980e3710be71e62853d6dd99a517ca65
[INFO] running `Command { std: "docker" "start" "-a" "287ced6c84b7b710bd3125a8f818b69d980e3710be71e62853d6dd99a517ca65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "287ced6c84b7b710bd3125a8f818b69d980e3710be71e62853d6dd99a517ca65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "287ced6c84b7b710bd3125a8f818b69d980e3710be71e62853d6dd99a517ca65", kill_on_drop: false }`
[INFO] [stdout] 287ced6c84b7b710bd3125a8f818b69d980e3710be71e62853d6dd99a517ca65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9dcc65f33aff3ed9bb2d06b6b527eed4f187375513029fa7804c9530cc0759db
[INFO] running `Command { std: "docker" "start" "-a" "9dcc65f33aff3ed9bb2d06b6b527eed4f187375513029fa7804c9530cc0759db", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling umm-malloc-sys v0.3.2
[INFO] [stderr]  Documenting umm-malloc v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: A critical section cargo feature must be enabled
[INFO] [stdout]    --> src/lib.rs:156:1
[INFO] [stdout]     |
[INFO] [stdout] 156 | compile_error!("A critical section cargo feature must be enabled");
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[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: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/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=63d3d33935f45961 -L dependency=/opt/rustwide/target/debug/deps --extern umm_malloc_sys=/opt/rustwide/target/debug/deps/libumm_malloc_sys-7c054e5893a3432c.rmeta --cap-lints=warn --crate-version 0.3.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "9dcc65f33aff3ed9bb2d06b6b527eed4f187375513029fa7804c9530cc0759db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dcc65f33aff3ed9bb2d06b6b527eed4f187375513029fa7804c9530cc0759db", kill_on_drop: false }`
[INFO] [stdout] 9dcc65f33aff3ed9bb2d06b6b527eed4f187375513029fa7804c9530cc0759db
