[INFO] fetching crate observable-rs 0.0.2...
[INFO] documenting observable-rs-0.0.2 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate observable-rs 0.0.2 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate observable-rs 0.0.2 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 observable-rs 0.0.2
[INFO] finished tweaking crates.io crate observable-rs 0.0.2
[INFO] tweaked toml for crates.io crate observable-rs 0.0.2 written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 584fe62554deb2b66bcdf5a5287267d78c0ae3922e013dd7cbce16168d0bd6e9
[INFO] running `Command { std: "docker" "start" "-a" "584fe62554deb2b66bcdf5a5287267d78c0ae3922e013dd7cbce16168d0bd6e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "584fe62554deb2b66bcdf5a5287267d78c0ae3922e013dd7cbce16168d0bd6e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "584fe62554deb2b66bcdf5a5287267d78c0ae3922e013dd7cbce16168d0bd6e9", kill_on_drop: false }`
[INFO] [stdout] 584fe62554deb2b66bcdf5a5287267d78c0ae3922e013dd7cbce16168d0bd6e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] a9115d438a0226ed43c840bb2259ad8449cca8a4d8b8f19e3e831ba7b8b08904
[INFO] running `Command { std: "docker" "start" "-a" "a9115d438a0226ed43c840bb2259ad8449cca8a4d8b8f19e3e831ba7b8b08904", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Documenting observable-rs v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: Rust code block is empty
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |   //! ```
[INFO] [stdout]   |  _____^
[INFO] [stdout] 4 | | //!
[INFO] [stdout] 5 | | //! ```
[INFO] [stdout]   | |_______^
[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
[INFO] [stdout]   |
[INFO] [stdout] 3 | //! ```text
[INFO] [stdout]   |        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "a9115d438a0226ed43c840bb2259ad8449cca8a4d8b8f19e3e831ba7b8b08904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9115d438a0226ed43c840bb2259ad8449cca8a4d8b8f19e3e831ba7b8b08904", kill_on_drop: false }`
[INFO] [stdout] a9115d438a0226ed43c840bb2259ad8449cca8a4d8b8f19e3e831ba7b8b08904
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 280e25044ce27b9e0633db8c9cfbe2e819815b92567d5c021424bfcc10b119cb
[INFO] running `Command { std: "docker" "start" "-a" "280e25044ce27b9e0633db8c9cfbe2e819815b92567d5c021424bfcc10b119cb", kill_on_drop: false }`
[INFO] [stderr]  Documenting observable-rs v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: Rust code block is empty
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |   //! ```
[INFO] [stdout]   |  _____^
[INFO] [stdout] 4 | | //!
[INFO] [stdout] 5 | | //! ```
[INFO] [stdout]   | |_______^
[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
[INFO] [stdout]   |
[INFO] [stdout] 3 | //! ```text
[INFO] [stdout]   |        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "280e25044ce27b9e0633db8c9cfbe2e819815b92567d5c021424bfcc10b119cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "280e25044ce27b9e0633db8c9cfbe2e819815b92567d5c021424bfcc10b119cb", kill_on_drop: false }`
[INFO] [stdout] 280e25044ce27b9e0633db8c9cfbe2e819815b92567d5c021424bfcc10b119cb