[INFO] fetching crate winner 0.0.0...
[INFO] documenting winner-0.0.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate winner 0.0.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate winner 0.0.0 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate winner 0.0.0
[INFO] finished tweaking crates.io crate winner 0.0.0
[INFO] tweaked toml for crates.io crate winner 0.0.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2022-05-20" "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] 9a36b482ab7892061f8a7f310adeabe287f6f94a607ede7f57764c867d0d1704
[INFO] running `Command { std: "docker" "start" "-a" "9a36b482ab7892061f8a7f310adeabe287f6f94a607ede7f57764c867d0d1704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a36b482ab7892061f8a7f310adeabe287f6f94a607ede7f57764c867d0d1704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a36b482ab7892061f8a7f310adeabe287f6f94a607ede7f57764c867d0d1704", kill_on_drop: false }`
[INFO] [stdout] 9a36b482ab7892061f8a7f310adeabe287f6f94a607ede7f57764c867d0d1704
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+beta-2022-05-20" "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] d326fd4bd70b8eb32cebaf130a4034cdd75dcc3e5ccb4eb4a21327ea79a0e096
[INFO] running `Command { std: "docker" "start" "-a" "d326fd4bd70b8eb32cebaf130a4034cdd75dcc3e5ccb4eb4a21327ea79a0e096", kill_on_drop: false }`
[INFO] [stderr]  Documenting winner v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "d326fd4bd70b8eb32cebaf130a4034cdd75dcc3e5ccb4eb4a21327ea79a0e096", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d326fd4bd70b8eb32cebaf130a4034cdd75dcc3e5ccb4eb4a21327ea79a0e096", kill_on_drop: false }`
[INFO] [stdout] d326fd4bd70b8eb32cebaf130a4034cdd75dcc3e5ccb4eb4a21327ea79a0e096
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", 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] 220c0ec9e15eeb03c314f022e8582f94ee84351f08705db5f6f2d0efcbb3ce3b
[INFO] running `Command { std: "docker" "start" "-a" "220c0ec9e15eeb03c314f022e8582f94ee84351f08705db5f6f2d0efcbb3ce3b", kill_on_drop: false }`
[INFO] [stderr]  Documenting winner v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.74s
[INFO] running `Command { std: "docker" "inspect" "220c0ec9e15eeb03c314f022e8582f94ee84351f08705db5f6f2d0efcbb3ce3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "220c0ec9e15eeb03c314f022e8582f94ee84351f08705db5f6f2d0efcbb3ce3b", kill_on_drop: false }`
[INFO] [stdout] 220c0ec9e15eeb03c314f022e8582f94ee84351f08705db5f6f2d0efcbb3ce3b