[INFO] fetching crate empty-option 0.1.1...
[INFO] documenting empty-option-0.1.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate empty-option 0.1.1 into /workspace/builds/worker-58/source
[INFO] validating manifest of crates.io crate empty-option 0.1.1 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 empty-option 0.1.1
[INFO] finished tweaking crates.io crate empty-option 0.1.1
[INFO] tweaked toml for crates.io crate empty-option 0.1.1 written to /workspace/builds/worker-58/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-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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] d060cc23ed9a703472e00d1e221ecf8e8ac89b29b3524b2169b705b5558120f2
[INFO] running `Command { std: "docker" "start" "-a" "d060cc23ed9a703472e00d1e221ecf8e8ac89b29b3524b2169b705b5558120f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d060cc23ed9a703472e00d1e221ecf8e8ac89b29b3524b2169b705b5558120f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d060cc23ed9a703472e00d1e221ecf8e8ac89b29b3524b2169b705b5558120f2", kill_on_drop: false }`
[INFO] [stdout] d060cc23ed9a703472e00d1e221ecf8e8ac89b29b3524b2169b705b5558120f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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] 2d04700cb472ca5d40ca3aa221595c4ddd9b3cc48d1080afe7a303fa791ec92b
[INFO] running `Command { std: "docker" "start" "-a" "2d04700cb472ca5d40ca3aa221595c4ddd9b3cc48d1080afe7a303fa791ec92b", kill_on_drop: false }`
[INFO] [stderr]  Documenting empty-option v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "2d04700cb472ca5d40ca3aa221595c4ddd9b3cc48d1080afe7a303fa791ec92b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d04700cb472ca5d40ca3aa221595c4ddd9b3cc48d1080afe7a303fa791ec92b", kill_on_drop: false }`
[INFO] [stdout] 2d04700cb472ca5d40ca3aa221595c4ddd9b3cc48d1080afe7a303fa791ec92b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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] [stdout] 58e2703b0b988b2febf9cf501cd8412822be0f4c5303eaa35d979a12b03cb0cc
[INFO] running `Command { std: "docker" "start" "-a" "58e2703b0b988b2febf9cf501cd8412822be0f4c5303eaa35d979a12b03cb0cc", kill_on_drop: false }`
[INFO] [stderr]  Documenting empty-option v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "58e2703b0b988b2febf9cf501cd8412822be0f4c5303eaa35d979a12b03cb0cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58e2703b0b988b2febf9cf501cd8412822be0f4c5303eaa35d979a12b03cb0cc", kill_on_drop: false }`
[INFO] [stdout] 58e2703b0b988b2febf9cf501cd8412822be0f4c5303eaa35d979a12b03cb0cc