[INFO] fetching crate cascade 0.1.4...
[INFO] documenting cascade-0.1.4 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate cascade 0.1.4 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate cascade 0.1.4 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 cascade 0.1.4
[INFO] finished tweaking crates.io crate cascade 0.1.4
[INFO] tweaked toml for crates.io crate cascade 0.1.4 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate cascade 0.1.4 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 4ead0cf027cdddea668c1b7e9d691e8fe97086dbce0d6d2b518afcc789bac120
[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" "4ead0cf027cdddea668c1b7e9d691e8fe97086dbce0d6d2b518afcc789bac120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ead0cf027cdddea668c1b7e9d691e8fe97086dbce0d6d2b518afcc789bac120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ead0cf027cdddea668c1b7e9d691e8fe97086dbce0d6d2b518afcc789bac120", kill_on_drop: false }`
[INFO] [stdout] 4ead0cf027cdddea668c1b7e9d691e8fe97086dbce0d6d2b518afcc789bac120
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] d8a45ecc019a651479734dc6aadbf0fd1ad8f100ede449b37bb6440b2926e10f
[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" "d8a45ecc019a651479734dc6aadbf0fd1ad8f100ede449b37bb6440b2926e10f", kill_on_drop: false }`
[INFO] [stderr]  Documenting cascade v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `Command { std: "docker" "inspect" "d8a45ecc019a651479734dc6aadbf0fd1ad8f100ede449b37bb6440b2926e10f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8a45ecc019a651479734dc6aadbf0fd1ad8f100ede449b37bb6440b2926e10f", kill_on_drop: false }`
[INFO] [stdout] d8a45ecc019a651479734dc6aadbf0fd1ad8f100ede449b37bb6440b2926e10f