[INFO] fetching crate density 0.5.1...
[INFO] documenting density-0.5.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate density 0.5.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate density 0.5.1 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate density 0.5.1
[INFO] finished tweaking crates.io crate density 0.5.1
[INFO] tweaked toml for crates.io crate density 0.5.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] be18e8df951067f0d2887e8004524f81118bad1a1535dcbdd62611fe5da1d822
[INFO] running `Command { std: "docker" "start" "-a" "be18e8df951067f0d2887e8004524f81118bad1a1535dcbdd62611fe5da1d822", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be18e8df951067f0d2887e8004524f81118bad1a1535dcbdd62611fe5da1d822", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be18e8df951067f0d2887e8004524f81118bad1a1535dcbdd62611fe5da1d822", kill_on_drop: false }`
[INFO] [stdout] be18e8df951067f0d2887e8004524f81118bad1a1535dcbdd62611fe5da1d822
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5eefa0dd4a06f7e5365e65784118bd8e56d3641e54cda3dc81f7d41f7c78e56
[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" "b5eefa0dd4a06f7e5365e65784118bd8e56d3641e54cda3dc81f7d41f7c78e56", kill_on_drop: false }`
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]  Documenting density v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.73s
[INFO] running `Command { std: "docker" "inspect" "b5eefa0dd4a06f7e5365e65784118bd8e56d3641e54cda3dc81f7d41f7c78e56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5eefa0dd4a06f7e5365e65784118bd8e56d3641e54cda3dc81f7d41f7c78e56", kill_on_drop: false }`
[INFO] [stdout] b5eefa0dd4a06f7e5365e65784118bd8e56d3641e54cda3dc81f7d41f7c78e56