[INFO] fetching crate blackhole 0.18.0...
[INFO] documenting blackhole-0.18.0 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate blackhole 0.18.0 into /workspace/builds/worker-68/source
[INFO] validating manifest of crates.io crate blackhole 0.18.0 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 blackhole 0.18.0
[INFO] finished tweaking crates.io crate blackhole 0.18.0
[INFO] tweaked toml for crates.io crate blackhole 0.18.0 written to /workspace/builds/worker-68/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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] 363abe00a6afb9d8094eda0911f3567b95f3a172d18921d853d9ce8336458fa6
[INFO] running `Command { std: "docker" "start" "-a" "363abe00a6afb9d8094eda0911f3567b95f3a172d18921d853d9ce8336458fa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "363abe00a6afb9d8094eda0911f3567b95f3a172d18921d853d9ce8336458fa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "363abe00a6afb9d8094eda0911f3567b95f3a172d18921d853d9ce8336458fa6", kill_on_drop: false }`
[INFO] [stdout] 363abe00a6afb9d8094eda0911f3567b95f3a172d18921d853d9ce8336458fa6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-68/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] 7ba3b91dd220376baad15e7048f78d9ef07058d2d9bcecb5a64e81dcc90ed475
[INFO] running `Command { std: "docker" "start" "-a" "7ba3b91dd220376baad15e7048f78d9ef07058d2d9bcecb5a64e81dcc90ed475", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting blackhole v0.18.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `Command { std: "docker" "inspect" "7ba3b91dd220376baad15e7048f78d9ef07058d2d9bcecb5a64e81dcc90ed475", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ba3b91dd220376baad15e7048f78d9ef07058d2d9bcecb5a64e81dcc90ed475", kill_on_drop: false }`
[INFO] [stdout] 7ba3b91dd220376baad15e7048f78d9ef07058d2d9bcecb5a64e81dcc90ed475
