[INFO] fetching crate tower-layer 0.3.0...
[INFO] documenting tower-layer-0.3.0 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] extracting crate tower-layer 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate tower-layer 0.3.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tower-layer 0.3.0
[INFO] finished tweaking crates.io crate tower-layer 0.3.0
[INFO] tweaked toml for crates.io crate tower-layer 0.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9ccb1dee690c0d1eeb31805524d578e34777d8286c624cf7ec191006e884c1d
[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" "e9ccb1dee690c0d1eeb31805524d578e34777d8286c624cf7ec191006e884c1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9ccb1dee690c0d1eeb31805524d578e34777d8286c624cf7ec191006e884c1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9ccb1dee690c0d1eeb31805524d578e34777d8286c624cf7ec191006e884c1d", kill_on_drop: false }`
[INFO] [stdout] e9ccb1dee690c0d1eeb31805524d578e34777d8286c624cf7ec191006e884c1d
[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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7ea6bfb8490f15220f7d3c829eecf33870e8a3970e0fed223517ebfe1dfbec3
[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" "d7ea6bfb8490f15220f7d3c829eecf33870e8a3970e0fed223517ebfe1dfbec3", kill_on_drop: false }`
[INFO] [stderr]  Documenting tower-layer v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `Command { std: "docker" "inspect" "d7ea6bfb8490f15220f7d3c829eecf33870e8a3970e0fed223517ebfe1dfbec3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7ea6bfb8490f15220f7d3c829eecf33870e8a3970e0fed223517ebfe1dfbec3", kill_on_drop: false }`
[INFO] [stdout] d7ea6bfb8490f15220f7d3c829eecf33870e8a3970e0fed223517ebfe1dfbec3
