[INFO] fetching crate np 2019.3.13...
[INFO] documenting np-2019.3.13 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate np 2019.3.13 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate np 2019.3.13 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 np 2019.3.13
[INFO] finished tweaking crates.io crate np 2019.3.13
[INFO] tweaked toml for crates.io crate np 2019.3.13 written to /workspace/builds/worker-8/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-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" "+1.46.0" "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] 308e12e17fc6144abb4c57ec5aeec4613a6f325d5929e9a90e8b105544bb30a6
[INFO] running `Command { std: "docker" "start" "-a" "308e12e17fc6144abb4c57ec5aeec4613a6f325d5929e9a90e8b105544bb30a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "308e12e17fc6144abb4c57ec5aeec4613a6f325d5929e9a90e8b105544bb30a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "308e12e17fc6144abb4c57ec5aeec4613a6f325d5929e9a90e8b105544bb30a6", kill_on_drop: false }`
[INFO] [stdout] 308e12e17fc6144abb4c57ec5aeec4613a6f325d5929e9a90e8b105544bb30a6
[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" "+1.46.0" "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] 053bc2fb5b1160b5040ed65e2ead1ec18b2a641703f7048d44975b5d6c1b15fb
[INFO] running `Command { std: "docker" "start" "-a" "053bc2fb5b1160b5040ed65e2ead1ec18b2a641703f7048d44975b5d6c1b15fb", kill_on_drop: false }`
[INFO] [stderr]  Documenting np v2019.3.13 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `Command { std: "docker" "inspect" "053bc2fb5b1160b5040ed65e2ead1ec18b2a641703f7048d44975b5d6c1b15fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "053bc2fb5b1160b5040ed65e2ead1ec18b2a641703f7048d44975b5d6c1b15fb", kill_on_drop: false }`
[INFO] [stdout] 053bc2fb5b1160b5040ed65e2ead1ec18b2a641703f7048d44975b5d6c1b15fb