[INFO] fetching crate rc-box 1.2.0...
[INFO] documenting rc-box-1.2.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate rc-box 1.2.0 into /workspace/builds/worker-38/source
[INFO] validating manifest of crates.io crate rc-box 1.2.0 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 rc-box 1.2.0
[INFO] finished tweaking crates.io crate rc-box 1.2.0
[INFO] tweaked toml for crates.io crate rc-box 1.2.0 written to /workspace/builds/worker-38/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] edf8d96904181e6c455787c01c223e22cba3cfc15285897cc08e716aee5a77b4
[INFO] running `Command { std: "docker" "start" "-a" "edf8d96904181e6c455787c01c223e22cba3cfc15285897cc08e716aee5a77b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "edf8d96904181e6c455787c01c223e22cba3cfc15285897cc08e716aee5a77b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edf8d96904181e6c455787c01c223e22cba3cfc15285897cc08e716aee5a77b4", kill_on_drop: false }`
[INFO] [stdout] edf8d96904181e6c455787c01c223e22cba3cfc15285897cc08e716aee5a77b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] 85a6c22f49800ea60a766ca05d6a7507e139b989c721d53ec19d6b1fb03ada74
[INFO] running `Command { std: "docker" "start" "-a" "85a6c22f49800ea60a766ca05d6a7507e139b989c721d53ec19d6b1fb03ada74", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling erasable v1.2.1
[INFO] [stderr]  Documenting rc-box v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.61s
[INFO] running `Command { std: "docker" "inspect" "85a6c22f49800ea60a766ca05d6a7507e139b989c721d53ec19d6b1fb03ada74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85a6c22f49800ea60a766ca05d6a7507e139b989c721d53ec19d6b1fb03ada74", kill_on_drop: false }`
[INFO] [stdout] 85a6c22f49800ea60a766ca05d6a7507e139b989c721d53ec19d6b1fb03ada74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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" "--all-features" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] e6076e7224024fb99ed770a051aa2531ba8259c094ab247d9b97ecaec9c40e40
[INFO] running `Command { std: "docker" "start" "-a" "e6076e7224024fb99ed770a051aa2531ba8259c094ab247d9b97ecaec9c40e40", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling erasable v1.2.1
[INFO] [stderr]    Compiling unsize v1.1.0
[INFO] [stderr]    Compiling slice-dst v1.5.1
[INFO] [stderr]  Documenting rc-box v1.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: Rust code block is empty
[INFO] [stdout]    --> src/lib.rs:46:9
[INFO] [stdout]     |
[INFO] [stdout] 46  |           #[doc = $x]
[INFO] [stdout]     |           ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 699 | / rc_box! {
[INFO] [stdout] 700 | |     /// Known unique version of [`Arc`].
[INFO] [stdout] 701 | |     ///
[INFO] [stdout] 702 | |     /// This type is guaranteed to have the same repr as `Box<T>`.
[INFO] [stdout] ...   |
[INFO] [stdout] 711 | |     RcBox = Rc
[INFO] [stdout] 712 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(rustdoc::invalid_rust_codeblocks)]` on by default
[INFO] [stdout]     = help: mark blocks that do not contain Rust code as text: ```text
[INFO] [stdout]     = note: this warning originates in the macro `doc_comment` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: Rust code block is empty
[INFO] [stdout]    --> src/lib.rs:46:9
[INFO] [stdout]     |
[INFO] [stdout] 46  |           #[doc = $x]
[INFO] [stdout]     |           ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 699 | / rc_box! {
[INFO] [stdout] 700 | |     /// Known unique version of [`Arc`].
[INFO] [stdout] 701 | |     ///
[INFO] [stdout] 702 | |     /// This type is guaranteed to have the same repr as `Box<T>`.
[INFO] [stdout] ...   |
[INFO] [stdout] 711 | |     RcBox = Rc
[INFO] [stdout] 712 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: mark blocks that do not contain Rust code as text: ```text
[INFO] [stdout]     = note: this warning originates in the macro `doc_comment` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.52s
[INFO] running `Command { std: "docker" "inspect" "e6076e7224024fb99ed770a051aa2531ba8259c094ab247d9b97ecaec9c40e40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6076e7224024fb99ed770a051aa2531ba8259c094ab247d9b97ecaec9c40e40", kill_on_drop: false }`
[INFO] [stdout] e6076e7224024fb99ed770a051aa2531ba8259c094ab247d9b97ecaec9c40e40