[INFO] fetching crate rhododendron 0.7.0...
[INFO] documenting rhododendron-0.7.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate rhododendron 0.7.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rhododendron 0.7.0 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 rhododendron 0.7.0
[INFO] finished tweaking crates.io crate rhododendron 0.7.0
[INFO] tweaked toml for crates.io crate rhododendron 0.7.0 written to /workspace/builds/worker-6/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-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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6cc1a15b033637f232e093c13684bfb47e43c633694ad05cacafec5ed9c0e6d2
[INFO] running `Command { std: "docker" "start" "-a" "6cc1a15b033637f232e093c13684bfb47e43c633694ad05cacafec5ed9c0e6d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cc1a15b033637f232e093c13684bfb47e43c633694ad05cacafec5ed9c0e6d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cc1a15b033637f232e093c13684bfb47e43c633694ad05cacafec5ed9c0e6d2", kill_on_drop: false }`
[INFO] [stdout] 6cc1a15b033637f232e093c13684bfb47e43c633694ad05cacafec5ed9c0e6d2
[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] f086354c88c9b18ab8bb62f378cb611302769d990288b02cab7cda9795c69999
[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" "f086354c88c9b18ab8bb62f378cb611302769d990288b02cab7cda9795c69999", kill_on_drop: false }`
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]  Documenting rhododendron v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.56s
[INFO] running `Command { std: "docker" "inspect" "f086354c88c9b18ab8bb62f378cb611302769d990288b02cab7cda9795c69999", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f086354c88c9b18ab8bb62f378cb611302769d990288b02cab7cda9795c69999", kill_on_drop: false }`
[INFO] [stdout] f086354c88c9b18ab8bb62f378cb611302769d990288b02cab7cda9795c69999