[INFO] fetching crate diffus 0.10.0...
[INFO] documenting diffus-0.10.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate diffus 0.10.0 into /workspace/builds/worker-77/source
[INFO] validating manifest of crates.io crate diffus 0.10.0 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 diffus 0.10.0
[INFO] finished tweaking crates.io crate diffus 0.10.0
[INFO] tweaked toml for crates.io crate diffus 0.10.0 written to /workspace/builds/worker-77/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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] a1c3ee1dd530a91cd06d6622cc05bfba7e1eacacf9874e83c15e4396f7be8870
[INFO] running `Command { std: "docker" "start" "-a" "a1c3ee1dd530a91cd06d6622cc05bfba7e1eacacf9874e83c15e4396f7be8870", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1c3ee1dd530a91cd06d6622cc05bfba7e1eacacf9874e83c15e4396f7be8870", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1c3ee1dd530a91cd06d6622cc05bfba7e1eacacf9874e83c15e4396f7be8870", kill_on_drop: false }`
[INFO] [stdout] a1c3ee1dd530a91cd06d6622cc05bfba7e1eacacf9874e83c15e4396f7be8870
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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] cd99730fd0c7d80b7d8193ea7a3bf1f8420497856ccfeefe2cd3f54dc281fa99
[INFO] running `Command { std: "docker" "start" "-a" "cd99730fd0c7d80b7d8193ea7a3bf1f8420497856ccfeefe2cd3f54dc281fa99", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]  Documenting diffus v0.10.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.68s
[INFO] running `Command { std: "docker" "inspect" "cd99730fd0c7d80b7d8193ea7a3bf1f8420497856ccfeefe2cd3f54dc281fa99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd99730fd0c7d80b7d8193ea7a3bf1f8420497856ccfeefe2cd3f54dc281fa99", kill_on_drop: false }`
[INFO] [stdout] cd99730fd0c7d80b7d8193ea7a3bf1f8420497856ccfeefe2cd3f54dc281fa99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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] 77aa185f3d53d67272b7473fdda6c6a96935ed06a8d040e75efc24b68d7cd1a8
[INFO] running `Command { std: "docker" "start" "-a" "77aa185f3d53d67272b7473fdda6c6a96935ed06a8d040e75efc24b68d7cd1a8", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]  Documenting diffus v0.10.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.09s
[INFO] running `Command { std: "docker" "inspect" "77aa185f3d53d67272b7473fdda6c6a96935ed06a8d040e75efc24b68d7cd1a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77aa185f3d53d67272b7473fdda6c6a96935ed06a8d040e75efc24b68d7cd1a8", kill_on_drop: false }`
[INFO] [stdout] 77aa185f3d53d67272b7473fdda6c6a96935ed06a8d040e75efc24b68d7cd1a8