[INFO] fetching crate async_once 0.2.6...
[INFO] documenting async_once-0.2.6 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate async_once 0.2.6 into /workspace/builds/worker-64/source
[INFO] validating manifest of crates.io crate async_once 0.2.6 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 async_once 0.2.6
[INFO] finished tweaking crates.io crate async_once 0.2.6
[INFO] tweaked toml for crates.io crate async_once 0.2.6 written to /workspace/builds/worker-64/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded signal-hook v0.3.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] b20d8a2a806459973fe8093531c0b4aebe163a8fe063a5fec4a0b48d1b8c6a21
[INFO] running `Command { std: "docker" "start" "-a" "b20d8a2a806459973fe8093531c0b4aebe163a8fe063a5fec4a0b48d1b8c6a21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b20d8a2a806459973fe8093531c0b4aebe163a8fe063a5fec4a0b48d1b8c6a21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b20d8a2a806459973fe8093531c0b4aebe163a8fe063a5fec4a0b48d1b8c6a21", kill_on_drop: false }`
[INFO] [stdout] b20d8a2a806459973fe8093531c0b4aebe163a8fe063a5fec4a0b48d1b8c6a21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] 48c4a6d4e46d5a6c84b5346424418bd865d609b6cc12d77440bc86baae7b2f75
[INFO] running `Command { std: "docker" "start" "-a" "48c4a6d4e46d5a6c84b5346424418bd865d609b6cc12d77440bc86baae7b2f75", kill_on_drop: false }`
[INFO] [stderr]  Documenting async_once v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.09s
[INFO] running `Command { std: "docker" "inspect" "48c4a6d4e46d5a6c84b5346424418bd865d609b6cc12d77440bc86baae7b2f75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48c4a6d4e46d5a6c84b5346424418bd865d609b6cc12d77440bc86baae7b2f75", kill_on_drop: false }`
[INFO] [stdout] 48c4a6d4e46d5a6c84b5346424418bd865d609b6cc12d77440bc86baae7b2f75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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] aaf2f116d4ffcf605dfe3a1209307bb7685f1868f09cd586c5c1862d99ee8771
[INFO] running `Command { std: "docker" "start" "-a" "aaf2f116d4ffcf605dfe3a1209307bb7685f1868f09cd586c5c1862d99ee8771", kill_on_drop: false }`
[INFO] [stderr]  Documenting async_once v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "aaf2f116d4ffcf605dfe3a1209307bb7685f1868f09cd586c5c1862d99ee8771", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aaf2f116d4ffcf605dfe3a1209307bb7685f1868f09cd586c5c1862d99ee8771", kill_on_drop: false }`
[INFO] [stdout] aaf2f116d4ffcf605dfe3a1209307bb7685f1868f09cd586c5c1862d99ee8771