[INFO] fetching crate flutter 0.0.0...
[INFO] documenting flutter-0.0.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate flutter 0.0.0 into /workspace/builds/worker-101/source
[INFO] validating manifest of crates.io crate flutter 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 flutter 0.0.0
[INFO] finished tweaking crates.io crate flutter 0.0.0
[INFO] tweaked toml for crates.io crate flutter 0.0.0 written to /workspace/builds/worker-101/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] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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] [stdout] ca7382fbedfdc5728f3ac2ccd8ad2845449aa9d3f55e9157530ea9f45d40eae3
[INFO] running `Command { std: "docker" "start" "-a" "ca7382fbedfdc5728f3ac2ccd8ad2845449aa9d3f55e9157530ea9f45d40eae3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca7382fbedfdc5728f3ac2ccd8ad2845449aa9d3f55e9157530ea9f45d40eae3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca7382fbedfdc5728f3ac2ccd8ad2845449aa9d3f55e9157530ea9f45d40eae3", kill_on_drop: false }`
[INFO] [stdout] ca7382fbedfdc5728f3ac2ccd8ad2845449aa9d3f55e9157530ea9f45d40eae3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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] [stdout] 44796e6bd5f49c4845e24e209f5e3f0ca405feba45acb415baf8f433788e61e9
[INFO] running `Command { std: "docker" "start" "-a" "44796e6bd5f49c4845e24e209f5e3f0ca405feba45acb415baf8f433788e61e9", kill_on_drop: false }`
[INFO] [stderr]  Documenting flutter v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `Command { std: "docker" "inspect" "44796e6bd5f49c4845e24e209f5e3f0ca405feba45acb415baf8f433788e61e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44796e6bd5f49c4845e24e209f5e3f0ca405feba45acb415baf8f433788e61e9", kill_on_drop: false }`
[INFO] [stdout] 44796e6bd5f49c4845e24e209f5e3f0ca405feba45acb415baf8f433788e61e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-101/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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] f8bd4bef25a4a1dfe49e8459fae1cad709d7436b0572e8c27e95239e2593498d
[INFO] running `Command { std: "docker" "start" "-a" "f8bd4bef25a4a1dfe49e8459fae1cad709d7436b0572e8c27e95239e2593498d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting flutter v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "f8bd4bef25a4a1dfe49e8459fae1cad709d7436b0572e8c27e95239e2593498d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8bd4bef25a4a1dfe49e8459fae1cad709d7436b0572e8c27e95239e2593498d", kill_on_drop: false }`
[INFO] [stdout] f8bd4bef25a4a1dfe49e8459fae1cad709d7436b0572e8c27e95239e2593498d