[INFO] fetching crate rwlock2 0.2.5...
[INFO] documenting rwlock2-0.2.5 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate rwlock2 0.2.5 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rwlock2 0.2.5 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 rwlock2 0.2.5
[INFO] finished tweaking crates.io crate rwlock2 0.2.5
[INFO] tweaked toml for crates.io crate rwlock2 0.2.5 written to /workspace/builds/worker-2/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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] b204e1a1d17f93edb47a78a0788e4d03c0fa0f69a15d0f31d7ecdd3fa70508c7
[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" "b204e1a1d17f93edb47a78a0788e4d03c0fa0f69a15d0f31d7ecdd3fa70508c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b204e1a1d17f93edb47a78a0788e4d03c0fa0f69a15d0f31d7ecdd3fa70508c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b204e1a1d17f93edb47a78a0788e4d03c0fa0f69a15d0f31d7ecdd3fa70508c7", kill_on_drop: false }`
[INFO] [stdout] b204e1a1d17f93edb47a78a0788e4d03c0fa0f69a15d0f31d7ecdd3fa70508c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ffbd385734628ab3bb84f6dcdaf94f3e64ffcb28cc7613b4d33fcc22ace8d95d
[INFO] running `Command { std: "docker" "start" "-a" "ffbd385734628ab3bb84f6dcdaf94f3e64ffcb28cc7613b4d33fcc22ace8d95d", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]  Documenting rwlock2 v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.07s
[INFO] running `Command { std: "docker" "inspect" "ffbd385734628ab3bb84f6dcdaf94f3e64ffcb28cc7613b4d33fcc22ace8d95d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffbd385734628ab3bb84f6dcdaf94f3e64ffcb28cc7613b4d33fcc22ace8d95d", kill_on_drop: false }`
[INFO] [stdout] ffbd385734628ab3bb84f6dcdaf94f3e64ffcb28cc7613b4d33fcc22ace8d95d