[INFO] fetching crate enum-iterator-derive 0.6.0...
[INFO] documenting enum-iterator-derive-0.6.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate enum-iterator-derive 0.6.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate enum-iterator-derive 0.6.0 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate enum-iterator-derive 0.6.0
[INFO] finished tweaking crates.io crate enum-iterator-derive 0.6.0
[INFO] tweaked toml for crates.io crate enum-iterator-derive 0.6.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "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] 1bbc5af31963bd0954e1ce2465567e33f2ffb759bbeec8a0432cfc7e40923a7d
[INFO] running `Command { std: "docker" "start" "-a" "1bbc5af31963bd0954e1ce2465567e33f2ffb759bbeec8a0432cfc7e40923a7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bbc5af31963bd0954e1ce2465567e33f2ffb759bbeec8a0432cfc7e40923a7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bbc5af31963bd0954e1ce2465567e33f2ffb759bbeec8a0432cfc7e40923a7d", kill_on_drop: false }`
[INFO] [stdout] 1bbc5af31963bd0954e1ce2465567e33f2ffb759bbeec8a0432cfc7e40923a7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fa72704013889e4c43526f713f428164f00e5a3b563b8eb82e32923b3213809
[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" "8fa72704013889e4c43526f713f428164f00e5a3b563b8eb82e32923b3213809", kill_on_drop: false }`
[INFO] [stderr]  Documenting enum-iterator-derive v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "8fa72704013889e4c43526f713f428164f00e5a3b563b8eb82e32923b3213809", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fa72704013889e4c43526f713f428164f00e5a3b563b8eb82e32923b3213809", kill_on_drop: false }`
[INFO] [stdout] 8fa72704013889e4c43526f713f428164f00e5a3b563b8eb82e32923b3213809