[INFO] fetching crate flip-link 0.1.6...
[INFO] documenting flip-link-0.1.6 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate flip-link 0.1.6 into /workspace/builds/worker-31/source
[INFO] validating manifest of crates.io crate flip-link 0.1.6 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] removed /workspace/builds/worker-31/source/.cargo/config.toml
[INFO] started tweaking crates.io crate flip-link 0.1.6
[INFO] finished tweaking crates.io crate flip-link 0.1.6
[INFO] tweaked toml for crates.io crate flip-link 0.1.6 written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] crate crates.io crate flip-link 0.1.6 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-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] c3b573eb2912a925c68eab3d8de2909d585540b29fb8da031df4fd83a9c2e884
[INFO] running `Command { std: "docker" "start" "-a" "c3b573eb2912a925c68eab3d8de2909d585540b29fb8da031df4fd83a9c2e884", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3b573eb2912a925c68eab3d8de2909d585540b29fb8da031df4fd83a9c2e884", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3b573eb2912a925c68eab3d8de2909d585540b29fb8da031df4fd83a9c2e884", kill_on_drop: false }`
[INFO] [stdout] c3b573eb2912a925c68eab3d8de2909d585540b29fb8da031df4fd83a9c2e884
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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] 20e621af628c1db403a2403f3aab4acef809ca69280c501a2c0db9c574f6431f
[INFO] running `Command { std: "docker" "start" "-a" "20e621af628c1db403a2403f3aab4acef809ca69280c501a2c0db9c574f6431f", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking object v0.26.1
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]  Documenting flip-link v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: could not parse code block as Rust code
[INFO] [stdout]   --> src/linking.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |   ///     ```
[INFO] [stdout]    |  _________^
[INFO] [stdout] 25 | | ///      +-------------+
[INFO] [stdout] 26 | | ///      | .bss+.data  |
[INFO] [stdout] 27 | | ///      +-------------+ <-- `stack_start`
[INFO] [stdout] ...  |
[INFO] [stdout] 33 | | ///      +-------------+
[INFO] [stdout] 34 | | ///     ```
[INFO] [stdout]    | |___________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::invalid_rust_codeblocks)]` on by default
[INFO] [stdout]    = note: error from rustc: unknown start of token: `
[INFO] [stdout]    = note: error from rustc: unknown start of token: `
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 24 | ///     ```text
[INFO] [stdout]    |            ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.69s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "20e621af628c1db403a2403f3aab4acef809ca69280c501a2c0db9c574f6431f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20e621af628c1db403a2403f3aab4acef809ca69280c501a2c0db9c574f6431f", kill_on_drop: false }`
[INFO] [stdout] 20e621af628c1db403a2403f3aab4acef809ca69280c501a2c0db9c574f6431f