[INFO] fetching crate mkv_chain 0.3.1...
[INFO] documenting mkv_chain-0.3.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate mkv_chain 0.3.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate mkv_chain 0.3.1 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mkv_chain 0.3.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate mkv_chain 0.3.1
[INFO] tweaked toml for crates.io crate mkv_chain 0.3.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate mkv_chain 0.3.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicase v2.5.1
[INFO] [stderr]   Downloaded unicode-normalization v0.1.8
[INFO] [stderr]   Downloaded ryu v1.0.0
[INFO] [stderr]   Downloaded bitflags v1.2.0
[INFO] [stderr]   Downloaded serde_derive v1.0.101
[INFO] [stderr]   Downloaded itertools v0.8.0
[INFO] [stderr]   Downloaded smallvec v0.6.10
[INFO] [stderr]   Downloaded version-sync v0.8.1
[INFO] [stderr]   Downloaded toml v0.5.3
[INFO] [stderr]   Downloaded semver-parser v0.9.0
[INFO] [stderr]   Downloaded pulldown-cmark v0.4.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.5
[INFO] [stderr]   Downloaded serde v1.0.101
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5b623e16e4b9b7eba4a0d6608029441c92abcec982aea3cd9970b0d484eeea2
[INFO] running `Command { std: "docker" "start" "-a" "f5b623e16e4b9b7eba4a0d6608029441c92abcec982aea3cd9970b0d484eeea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5b623e16e4b9b7eba4a0d6608029441c92abcec982aea3cd9970b0d484eeea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5b623e16e4b9b7eba4a0d6608029441c92abcec982aea3cd9970b0d484eeea2", kill_on_drop: false }`
[INFO] [stdout] f5b623e16e4b9b7eba4a0d6608029441c92abcec982aea3cd9970b0d484eeea2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8db48a010230c8783f7a84b9df1492bf2a2f7f1515014f6c9d6ef79c9af948e8
[INFO] running `Command { std: "docker" "start" "-a" "8db48a010230c8783f7a84b9df1492bf2a2f7f1515014f6c9d6ef79c9af948e8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting mkv_chain v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `Command { std: "docker" "inspect" "8db48a010230c8783f7a84b9df1492bf2a2f7f1515014f6c9d6ef79c9af948e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8db48a010230c8783f7a84b9df1492bf2a2f7f1515014f6c9d6ef79c9af948e8", kill_on_drop: false }`
[INFO] [stdout] 8db48a010230c8783f7a84b9df1492bf2a2f7f1515014f6c9d6ef79c9af948e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 6c9d6efa5e8534288e629c59c5839ac63c1586fc34904571c4d61b82b45c5dcb
[INFO] running `Command { std: "docker" "start" "-a" "6c9d6efa5e8534288e629c59c5839ac63c1586fc34904571c4d61b82b45c5dcb", kill_on_drop: false }`
[INFO] [stderr]  Documenting mkv_chain v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `Command { std: "docker" "inspect" "6c9d6efa5e8534288e629c59c5839ac63c1586fc34904571c4d61b82b45c5dcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c9d6efa5e8534288e629c59c5839ac63c1586fc34904571c4d61b82b45c5dcb", kill_on_drop: false }`
[INFO] [stdout] 6c9d6efa5e8534288e629c59c5839ac63c1586fc34904571c4d61b82b45c5dcb