[INFO] crate rio 0.9.4 is already in cache
[INFO] documenting rio-0.9.4 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate rio 0.9.4 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate rio 0.9.4 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 rio 0.9.4
[INFO] finished tweaking crates.io crate rio 0.9.4
[INFO] tweaked toml for crates.io crate rio 0.9.4 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate crates.io crate rio 0.9.4 already has a lockfile, it will not be regenerated
[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-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] 5fef159124e34cec4ac7c90763db9fdd6f4f79bb13e612b29e337ea804b9e90b
[INFO] running `Command { std: "docker" "start" "-a" "5fef159124e34cec4ac7c90763db9fdd6f4f79bb13e612b29e337ea804b9e90b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fef159124e34cec4ac7c90763db9fdd6f4f79bb13e612b29e337ea804b9e90b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fef159124e34cec4ac7c90763db9fdd6f4f79bb13e612b29e337ea804b9e90b", kill_on_drop: false }`
[INFO] [stdout] 5fef159124e34cec4ac7c90763db9fdd6f4f79bb13e612b29e337ea804b9e90b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] dfa8d412c09612f84e8b214146c3747bb0db4d3a8717e40b7805b5665eb75f7c
[INFO] running `Command { std: "docker" "start" "-a" "dfa8d412c09612f84e8b214146c3747bb0db4d3a8717e40b7805b5665eb75f7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]  Documenting rio v0.9.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `Command { std: "docker" "inspect" "dfa8d412c09612f84e8b214146c3747bb0db4d3a8717e40b7805b5665eb75f7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfa8d412c09612f84e8b214146c3747bb0db4d3a8717e40b7805b5665eb75f7c", kill_on_drop: false }`
[INFO] [stdout] dfa8d412c09612f84e8b214146c3747bb0db4d3a8717e40b7805b5665eb75f7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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] 373ab57cb05e34cbf5ef2dc17e0f19d4380eb1c6d8bbad22d8da47d5d88dca0e
[INFO] running `Command { std: "docker" "start" "-a" "373ab57cb05e34cbf5ef2dc17e0f19d4380eb1c6d8bbad22d8da47d5d88dca0e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]  Documenting rio v0.9.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.09s
[INFO] running `Command { std: "docker" "inspect" "373ab57cb05e34cbf5ef2dc17e0f19d4380eb1c6d8bbad22d8da47d5d88dca0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "373ab57cb05e34cbf5ef2dc17e0f19d4380eb1c6d8bbad22d8da47d5d88dca0e", kill_on_drop: false }`
[INFO] [stdout] 373ab57cb05e34cbf5ef2dc17e0f19d4380eb1c6d8bbad22d8da47d5d88dca0e