[INFO] fetching crate cpp_build 0.5.5...
[INFO] documenting cpp_build-0.5.5 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate cpp_build 0.5.5 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate cpp_build 0.5.5 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cpp_build 0.5.5
[INFO] finished tweaking crates.io crate cpp_build 0.5.5
[INFO] tweaked toml for crates.io crate cpp_build 0.5.5 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 32bee71a8466867e8f0441df893fcbdd8c38de5a6258eb220c07e8ccd17312d4
[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" "32bee71a8466867e8f0441df893fcbdd8c38de5a6258eb220c07e8ccd17312d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32bee71a8466867e8f0441df893fcbdd8c38de5a6258eb220c07e8ccd17312d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32bee71a8466867e8f0441df893fcbdd8c38de5a6258eb220c07e8ccd17312d4", kill_on_drop: false }`
[INFO] [stdout] 32bee71a8466867e8f0441df893fcbdd8c38de5a6258eb220c07e8ccd17312d4
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dcb632503e4bc7f74a45c64025ca50079e8bfaa7a3b7731657e0d7e2d367a372
[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" "dcb632503e4bc7f74a45c64025ca50079e8bfaa7a3b7731657e0d7e2d367a372", kill_on_drop: false }`
[INFO] [stderr]     Checking quote v1.0.7
[INFO] [stderr]     Checking syn v1.0.39
[INFO] [stderr]     Checking cpp_common v0.5.5
[INFO] [stderr]  Documenting cpp_build v0.5.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.97s
[INFO] running `Command { std: "docker" "inspect" "dcb632503e4bc7f74a45c64025ca50079e8bfaa7a3b7731657e0d7e2d367a372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcb632503e4bc7f74a45c64025ca50079e8bfaa7a3b7731657e0d7e2d367a372", kill_on_drop: false }`
[INFO] [stdout] dcb632503e4bc7f74a45c64025ca50079e8bfaa7a3b7731657e0d7e2d367a372