[INFO] fetching crate nature_demo_converter_restful 0.0.2...
[INFO] documenting nature_demo_converter_restful-0.0.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate nature_demo_converter_restful 0.0.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate nature_demo_converter_restful 0.0.2 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 nature_demo_converter_restful 0.0.2
[INFO] finished tweaking crates.io crate nature_demo_converter_restful 0.0.2
[INFO] tweaked toml for crates.io crate nature_demo_converter_restful 0.0.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate nature_demo_converter_restful 0.0.2 already has a lockfile, it will not be regenerated
[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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] f366f38317889187ce6d4f37e4f2315b483e62efd71bf70ad8f13f7460fab5b9
[INFO] running `Command { std: "docker" "start" "-a" "f366f38317889187ce6d4f37e4f2315b483e62efd71bf70ad8f13f7460fab5b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f366f38317889187ce6d4f37e4f2315b483e62efd71bf70ad8f13f7460fab5b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f366f38317889187ce6d4f37e4f2315b483e62efd71bf70ad8f13f7460fab5b9", kill_on_drop: false }`
[INFO] [stdout] f366f38317889187ce6d4f37e4f2315b483e62efd71bf70ad8f13f7460fab5b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] e460eeb9ba1161df6c25111e018df1def5fcc7fdfa3b1f91facfba84766e47d5
[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" "e460eeb9ba1161df6c25111e018df1def5fcc7fdfa3b1f91facfba84766e47d5", kill_on_drop: false }`
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[INFO] [stderr]     Checking nature_common v0.0.2
[INFO] [stderr]  Documenting nature_demo_converter_restful v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 30s
[INFO] running `Command { std: "docker" "inspect" "e460eeb9ba1161df6c25111e018df1def5fcc7fdfa3b1f91facfba84766e47d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e460eeb9ba1161df6c25111e018df1def5fcc7fdfa3b1f91facfba84766e47d5", kill_on_drop: false }`
[INFO] [stdout] e460eeb9ba1161df6c25111e018df1def5fcc7fdfa3b1f91facfba84766e47d5