[INFO] fetching crate io-arc 1.0.0...
[INFO] documenting io-arc-1.0.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate io-arc 1.0.0 into /workspace/builds/worker-81/source
[INFO] validating manifest of crates.io crate io-arc 1.0.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate io-arc 1.0.0
[INFO] finished tweaking crates.io crate io-arc 1.0.0
[INFO] tweaked toml for crates.io crate io-arc 1.0.0 written to /workspace/builds/worker-81/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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" "+1.54.0" "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-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c70995c07293eb0b72bb802489e01a0cde1c71527d7e5a2acdd800a695a2fbf
[INFO] running `Command { std: "docker" "start" "-a" "3c70995c07293eb0b72bb802489e01a0cde1c71527d7e5a2acdd800a695a2fbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c70995c07293eb0b72bb802489e01a0cde1c71527d7e5a2acdd800a695a2fbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c70995c07293eb0b72bb802489e01a0cde1c71527d7e5a2acdd800a695a2fbf", kill_on_drop: false }`
[INFO] [stdout] 3c70995c07293eb0b72bb802489e01a0cde1c71527d7e5a2acdd800a695a2fbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-81/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65da637f42779b42b5653e8000959684c0f7809e47c8d533a422cc9a5b294516
[INFO] running `Command { std: "docker" "start" "-a" "65da637f42779b42b5653e8000959684c0f7809e47c8d533a422cc9a5b294516", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking futures-io v0.3.16
[INFO] [stderr]  Documenting io-arc v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "65da637f42779b42b5653e8000959684c0f7809e47c8d533a422cc9a5b294516", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65da637f42779b42b5653e8000959684c0f7809e47c8d533a422cc9a5b294516", kill_on_drop: false }`
[INFO] [stdout] 65da637f42779b42b5653e8000959684c0f7809e47c8d533a422cc9a5b294516
