[INFO] fetching crate headers-ext 0.0.4...
[INFO] documenting headers-ext-0.0.4 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate headers-ext 0.0.4 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate headers-ext 0.0.4 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate headers-ext 0.0.4
[INFO] finished tweaking crates.io crate headers-ext 0.0.4
[INFO] tweaked toml for crates.io crate headers-ext 0.0.4 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0df28ad5c52b2fa5d2f4796c46e7b36efebb123639e188e1b835c694493974bd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0df28ad5c52b2fa5d2f4796c46e7b36efebb123639e188e1b835c694493974bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0df28ad5c52b2fa5d2f4796c46e7b36efebb123639e188e1b835c694493974bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0df28ad5c52b2fa5d2f4796c46e7b36efebb123639e188e1b835c694493974bd", kill_on_drop: false }`
[INFO] [stdout] 0df28ad5c52b2fa5d2f4796c46e7b36efebb123639e188e1b835c694493974bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 880c07f8cfe72b5b8727285ef01118ebe36f68677c5c0a6ce1ed2cefa086bdee
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "880c07f8cfe72b5b8727285ef01118ebe36f68677c5c0a6ce1ed2cefa086bdee", kill_on_drop: false }`
[INFO] [stderr]    Compiling headers-derive v0.0.2
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking headers-core v0.0.2
[INFO] [stderr]  Documenting headers-ext v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: Rust code block is empty
[INFO] [stdout]   --> src/common/accept_ranges.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |   /// ```
[INFO] [stdout]    |  _____^
[INFO] [stdout] 23 | | /// ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 22 | /// ```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 7.68s
[INFO] running `Command { std: "docker" "inspect" "880c07f8cfe72b5b8727285ef01118ebe36f68677c5c0a6ce1ed2cefa086bdee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "880c07f8cfe72b5b8727285ef01118ebe36f68677c5c0a6ce1ed2cefa086bdee", kill_on_drop: false }`
[INFO] [stdout] 880c07f8cfe72b5b8727285ef01118ebe36f68677c5c0a6ce1ed2cefa086bdee