[INFO] fetching crate scanner-rust 2.0.13...
[INFO] documenting scanner-rust-2.0.13 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate scanner-rust 2.0.13 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate scanner-rust 2.0.13 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 scanner-rust 2.0.13
[INFO] finished tweaking crates.io crate scanner-rust 2.0.13
[INFO] tweaked toml for crates.io crate scanner-rust 2.0.13 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate scanner-rust 2.0.13 already has a lockfile, it will not be regenerated
[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-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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 478d08eabd17e3e17d56173ad57a694497c43ec326b7b7a18e5e9914db8c8cb4
[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" "478d08eabd17e3e17d56173ad57a694497c43ec326b7b7a18e5e9914db8c8cb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "478d08eabd17e3e17d56173ad57a694497c43ec326b7b7a18e5e9914db8c8cb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "478d08eabd17e3e17d56173ad57a694497c43ec326b7b7a18e5e9914db8c8cb4", kill_on_drop: false }`
[INFO] [stdout] 478d08eabd17e3e17d56173ad57a694497c43ec326b7b7a18e5e9914db8c8cb4
[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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8febc6f692e8655131aaa95605269d05f51a125be9b443803913ad53ce0874f
[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" "b8febc6f692e8655131aaa95605269d05f51a125be9b443803913ad53ce0874f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.15
[INFO] [stderr]     Checking utf8-width v0.1.0
[INFO] [stderr]     Checking generic-array v0.14.1
[INFO] [stderr]    Compiling educe v0.4.2
[INFO] [stderr]  Documenting scanner-rust v2.0.13 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.41s
[INFO] running `Command { std: "docker" "inspect" "b8febc6f692e8655131aaa95605269d05f51a125be9b443803913ad53ce0874f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8febc6f692e8655131aaa95605269d05f51a125be9b443803913ad53ce0874f", kill_on_drop: false }`
[INFO] [stdout] b8febc6f692e8655131aaa95605269d05f51a125be9b443803913ad53ce0874f