[INFO] fetching crate debug_tree 0.4.0...
[INFO] documenting debug_tree-0.4.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate debug_tree 0.4.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate debug_tree 0.4.0 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 debug_tree 0.4.0
[INFO] finished tweaking crates.io crate debug_tree 0.4.0
[INFO] tweaked toml for crates.io crate debug_tree 0.4.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate debug_tree 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stdout] 9283adc93359712115cb8a2ccae10cd2d07364da67809a343a6d4e79a9fc7752
[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" "9283adc93359712115cb8a2ccae10cd2d07364da67809a343a6d4e79a9fc7752", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9283adc93359712115cb8a2ccae10cd2d07364da67809a343a6d4e79a9fc7752", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9283adc93359712115cb8a2ccae10cd2d07364da67809a343a6d4e79a9fc7752", kill_on_drop: false }`
[INFO] [stdout] 9283adc93359712115cb8a2ccae10cd2d07364da67809a343a6d4e79a9fc7752
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 048edf3401de3c60864a171f6f4db95c10aa8f8b7cd2fd4eab65f952a575bb05
[INFO] running `Command { std: "docker" "start" "-a" "048edf3401de3c60864a171f6f4db95c10aa8f8b7cd2fd4eab65f952a575bb05", kill_on_drop: false }`
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]  Documenting debug_tree v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.24s
[INFO] running `Command { std: "docker" "inspect" "048edf3401de3c60864a171f6f4db95c10aa8f8b7cd2fd4eab65f952a575bb05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "048edf3401de3c60864a171f6f4db95c10aa8f8b7cd2fd4eab65f952a575bb05", kill_on_drop: false }`
[INFO] [stdout] 048edf3401de3c60864a171f6f4db95c10aa8f8b7cd2fd4eab65f952a575bb05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 8c1db5cec847a7266bd7776eb102eb5e0057c69a7f2d560c6b6cf1cbb7cb89c9
[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" "8c1db5cec847a7266bd7776eb102eb5e0057c69a7f2d560c6b6cf1cbb7cb89c9", kill_on_drop: false }`
[INFO] [stderr]     Checking once_cell v1.3.1
[INFO] [stderr]  Documenting debug_tree v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.35s
[INFO] running `Command { std: "docker" "inspect" "8c1db5cec847a7266bd7776eb102eb5e0057c69a7f2d560c6b6cf1cbb7cb89c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c1db5cec847a7266bd7776eb102eb5e0057c69a7f2d560c6b6cf1cbb7cb89c9", kill_on_drop: false }`
[INFO] [stdout] 8c1db5cec847a7266bd7776eb102eb5e0057c69a7f2d560c6b6cf1cbb7cb89c9