[INFO] fetching crate yaml-front-matter 0.1.0...
[INFO] documenting yaml-front-matter-0.1.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate yaml-front-matter 0.1.0 into /workspace/builds/worker-24/source
[INFO] validating manifest of crates.io crate yaml-front-matter 0.1.0 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 yaml-front-matter 0.1.0
[INFO] finished tweaking crates.io crate yaml-front-matter 0.1.0
[INFO] tweaked toml for crates.io crate yaml-front-matter 0.1.0 written to /workspace/builds/worker-24/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-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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] 3c785d50755f41f780d77612e8efd9a03e6b26a29c32d5be9edaf44a95c8506c
[INFO] running `Command { std: "docker" "start" "-a" "3c785d50755f41f780d77612e8efd9a03e6b26a29c32d5be9edaf44a95c8506c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c785d50755f41f780d77612e8efd9a03e6b26a29c32d5be9edaf44a95c8506c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c785d50755f41f780d77612e8efd9a03e6b26a29c32d5be9edaf44a95c8506c", kill_on_drop: false }`
[INFO] [stdout] 3c785d50755f41f780d77612e8efd9a03e6b26a29c32d5be9edaf44a95c8506c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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] 07a0f02292cd6a6f19e7e7c410a51687da7e629255181c8296e515d75ca2f39f
[INFO] running `Command { std: "docker" "start" "-a" "07a0f02292cd6a6f19e7e7c410a51687da7e629255181c8296e515d75ca2f39f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking serde_yaml v0.8.24
[INFO] [stderr]  Documenting yaml-front-matter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  |   //! ```ignore
[INFO] [stdout]    |  _____^
[INFO] [stdout] 9  | | //! ---
[INFO] [stdout] 10 | | //! title: 'Parsing a Markdown file metadata into a struct'
[INFO] [stdout] 11 | | //! description: 'This tutorial walks you through the practice of parsing markdown files for metadata'
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | | //! ---
[INFO] [stdout] 22 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::invalid_rust_codeblocks)]` on by default
[INFO] [stdout] help: `ignore` code blocks require valid Rust code for syntax highlighting; mark blocks that do not contain Rust code as text: ```text
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | //! ```ignore
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    = note: error from rustc: unterminated character literal
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.68s
[INFO] running `Command { std: "docker" "inspect" "07a0f02292cd6a6f19e7e7c410a51687da7e629255181c8296e515d75ca2f39f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07a0f02292cd6a6f19e7e7c410a51687da7e629255181c8296e515d75ca2f39f", kill_on_drop: false }`
[INFO] [stdout] 07a0f02292cd6a6f19e7e7c410a51687da7e629255181c8296e515d75ca2f39f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 4738d770577e2032f675ccfd2b5e7eff35cb63c6a489567bd69d3466fae5ff4b
[INFO] running `Command { std: "docker" "start" "-a" "4738d770577e2032f675ccfd2b5e7eff35cb63c6a489567bd69d3466fae5ff4b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking serde_yaml v0.8.24
[INFO] [stderr]  Documenting yaml-front-matter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  |   //! ```ignore
[INFO] [stdout]    |  _____^
[INFO] [stdout] 9  | | //! ---
[INFO] [stdout] 10 | | //! title: 'Parsing a Markdown file metadata into a struct'
[INFO] [stdout] 11 | | //! description: 'This tutorial walks you through the practice of parsing markdown files for metadata'
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | | //! ---
[INFO] [stdout] 22 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::invalid_rust_codeblocks)]` on by default
[INFO] [stdout] help: `ignore` code blocks require valid Rust code for syntax highlighting; mark blocks that do not contain Rust code as text: ```text
[INFO] [stdout]   --> src/lib.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | //! ```ignore
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    = note: error from rustc: unterminated character literal
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.51s
[INFO] running `Command { std: "docker" "inspect" "4738d770577e2032f675ccfd2b5e7eff35cb63c6a489567bd69d3466fae5ff4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4738d770577e2032f675ccfd2b5e7eff35cb63c6a489567bd69d3466fae5ff4b", kill_on_drop: false }`
[INFO] [stdout] 4738d770577e2032f675ccfd2b5e7eff35cb63c6a489567bd69d3466fae5ff4b