[INFO] fetching crate mfrc522 0.3.0...
[INFO] documenting mfrc522-0.3.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate mfrc522 0.3.0 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate mfrc522 0.3.0 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 mfrc522 0.3.0
[INFO] finished tweaking crates.io crate mfrc522 0.3.0
[INFO] tweaked toml for crates.io crate mfrc522 0.3.0 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate crates.io crate mfrc522 0.3.0 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-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] aa4e8853649d11526fcc97b4a18476969b1a4f6bffc95945a759a382d0adaf7a
[INFO] running `Command { std: "docker" "start" "-a" "aa4e8853649d11526fcc97b4a18476969b1a4f6bffc95945a759a382d0adaf7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa4e8853649d11526fcc97b4a18476969b1a4f6bffc95945a759a382d0adaf7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa4e8853649d11526fcc97b4a18476969b1a4f6bffc95945a759a382d0adaf7a", kill_on_drop: false }`
[INFO] [stdout] aa4e8853649d11526fcc97b4a18476969b1a4f6bffc95945a759a382d0adaf7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 618c9fe76f809f4c350957e0bc98a54caa856964be63aae5f28f206e81ce8966
[INFO] running `Command { std: "docker" "start" "-a" "618c9fe76f809f4c350957e0bc98a54caa856964be63aae5f28f206e81ce8966", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]  Documenting mfrc522 v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.32s
[INFO] running `Command { std: "docker" "inspect" "618c9fe76f809f4c350957e0bc98a54caa856964be63aae5f28f206e81ce8966", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "618c9fe76f809f4c350957e0bc98a54caa856964be63aae5f28f206e81ce8966", kill_on_drop: false }`
[INFO] [stdout] 618c9fe76f809f4c350957e0bc98a54caa856964be63aae5f28f206e81ce8966
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 8f01a3724b091faa6df58917b6863a7a3f99c5c340a78cb7110b7f8c25a143b1
[INFO] running `Command { std: "docker" "start" "-a" "8f01a3724b091faa6df58917b6863a7a3f99c5c340a78cb7110b7f8c25a143b1", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]  Documenting mfrc522 v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `Command { std: "docker" "inspect" "8f01a3724b091faa6df58917b6863a7a3f99c5c340a78cb7110b7f8c25a143b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f01a3724b091faa6df58917b6863a7a3f99c5c340a78cb7110b7f8c25a143b1", kill_on_drop: false }`
[INFO] [stdout] 8f01a3724b091faa6df58917b6863a7a3f99c5c340a78cb7110b7f8c25a143b1