[INFO] fetching crate extendhash 1.0.8...
[INFO] documenting extendhash-1.0.8 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate extendhash 1.0.8 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate extendhash 1.0.8 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 extendhash 1.0.8
[INFO] finished tweaking crates.io crate extendhash 1.0.8
[INFO] tweaked toml for crates.io crate extendhash 1.0.8 written to /workspace/builds/worker-6/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] [stderr]     Blocking waiting for file lock on package cache
[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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stdout] cbcf56f99fbae733b6288fe71b1523504c858ac1ee5c6848198de5bdc4f1025c
[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" "cbcf56f99fbae733b6288fe71b1523504c858ac1ee5c6848198de5bdc4f1025c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbcf56f99fbae733b6288fe71b1523504c858ac1ee5c6848198de5bdc4f1025c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbcf56f99fbae733b6288fe71b1523504c858ac1ee5c6848198de5bdc4f1025c", kill_on_drop: false }`
[INFO] [stdout] cbcf56f99fbae733b6288fe71b1523504c858ac1ee5c6848198de5bdc4f1025c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 924c33cf22d1f7e0afbb14b64f702087c7001b4b1ac43b9f8de0d5b524858a67
[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" "924c33cf22d1f7e0afbb14b64f702087c7001b4b1ac43b9f8de0d5b524858a67", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting extendhash v1.0.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `Command { std: "docker" "inspect" "924c33cf22d1f7e0afbb14b64f702087c7001b4b1ac43b9f8de0d5b524858a67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "924c33cf22d1f7e0afbb14b64f702087c7001b4b1ac43b9f8de0d5b524858a67", kill_on_drop: false }`
[INFO] [stdout] 924c33cf22d1f7e0afbb14b64f702087c7001b4b1ac43b9f8de0d5b524858a67