[INFO] fetching crate async-util 0.0.0...
[INFO] documenting async-util-0.0.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate async-util 0.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate async-util 0.0.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-util 0.0.0
[INFO] finished tweaking crates.io crate async-util 0.0.0
[INFO] tweaked toml for crates.io crate async-util 0.0.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 22a0971d74bc733781594b9120396853db87a63be968f26c6147eb15e2b4d8f0
[INFO] running `Command { std: "docker" "start" "-a" "22a0971d74bc733781594b9120396853db87a63be968f26c6147eb15e2b4d8f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22a0971d74bc733781594b9120396853db87a63be968f26c6147eb15e2b4d8f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22a0971d74bc733781594b9120396853db87a63be968f26c6147eb15e2b4d8f0", kill_on_drop: false }`
[INFO] [stdout] 22a0971d74bc733781594b9120396853db87a63be968f26c6147eb15e2b4d8f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b170e7545e5ce1d5815dc51d8fb2665c77c73fb001c07362b981b894a0f225de
[INFO] running `Command { std: "docker" "start" "-a" "b170e7545e5ce1d5815dc51d8fb2665c77c73fb001c07362b981b894a0f225de", kill_on_drop: false }`
[INFO] [stderr]  Documenting async-util v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.93s
[INFO] running `Command { std: "docker" "inspect" "b170e7545e5ce1d5815dc51d8fb2665c77c73fb001c07362b981b894a0f225de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b170e7545e5ce1d5815dc51d8fb2665c77c73fb001c07362b981b894a0f225de", kill_on_drop: false }`
[INFO] [stdout] b170e7545e5ce1d5815dc51d8fb2665c77c73fb001c07362b981b894a0f225de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 82c1e4204facdf6b724a1bf7d2b9eb305f0c2d5ba78a82a4977dee0ef546a1aa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "82c1e4204facdf6b724a1bf7d2b9eb305f0c2d5ba78a82a4977dee0ef546a1aa", kill_on_drop: false }`
[INFO] [stderr]  Documenting async-util v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.62s
[INFO] running `Command { std: "docker" "inspect" "82c1e4204facdf6b724a1bf7d2b9eb305f0c2d5ba78a82a4977dee0ef546a1aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82c1e4204facdf6b724a1bf7d2b9eb305f0c2d5ba78a82a4977dee0ef546a1aa", kill_on_drop: false }`
[INFO] [stdout] 82c1e4204facdf6b724a1bf7d2b9eb305f0c2d5ba78a82a4977dee0ef546a1aa