[INFO] fetching crate nbd 0.2.3...
[INFO] documenting nbd-0.2.3 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate nbd 0.2.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate nbd 0.2.3 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 nbd 0.2.3
[INFO] finished tweaking crates.io crate nbd 0.2.3
[INFO] tweaked toml for crates.io crate nbd 0.2.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate nbd 0.2.3 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ada05bcb3d2ad173f4542697c43143a3069b0994fff6f77481f004b59e1e78c4
[INFO] running `Command { std: "docker" "start" "-a" "ada05bcb3d2ad173f4542697c43143a3069b0994fff6f77481f004b59e1e78c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ada05bcb3d2ad173f4542697c43143a3069b0994fff6f77481f004b59e1e78c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ada05bcb3d2ad173f4542697c43143a3069b0994fff6f77481f004b59e1e78c4", kill_on_drop: false }`
[INFO] [stdout] ada05bcb3d2ad173f4542697c43143a3069b0994fff6f77481f004b59e1e78c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b8107e73f819c035d593582e4b2cb4868e29ea096da1f81b811b915113a6389c
[INFO] running `Command { std: "docker" "start" "-a" "b8107e73f819c035d593582e4b2cb4868e29ea096da1f81b811b915113a6389c", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.2.4
[INFO] [stderr]  Documenting nbd v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | //! https://github.com/NetworkBlockDevice/nbd/blob/master/doc/proto.md
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://github.com/NetworkBlockDevice/nbd/blob/master/doc/proto.md>`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(rustdoc::bare_urls)]` on by default
[INFO] [stdout]   = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.67s
[INFO] running `Command { std: "docker" "inspect" "b8107e73f819c035d593582e4b2cb4868e29ea096da1f81b811b915113a6389c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8107e73f819c035d593582e4b2cb4868e29ea096da1f81b811b915113a6389c", kill_on_drop: false }`
[INFO] [stdout] b8107e73f819c035d593582e4b2cb4868e29ea096da1f81b811b915113a6389c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0f4d98d0207a28309d36eb8b4b5fdd63871d02f816ce854ecaec2bdae5bb1521
[INFO] running `Command { std: "docker" "start" "-a" "0f4d98d0207a28309d36eb8b4b5fdd63871d02f816ce854ecaec2bdae5bb1521", kill_on_drop: false }`
[INFO] [stderr]     Checking byteorder v1.2.4
[INFO] [stderr]  Documenting nbd v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this URL is not a hyperlink
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | //! https://github.com/NetworkBlockDevice/nbd/blob/master/doc/proto.md
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://github.com/NetworkBlockDevice/nbd/blob/master/doc/proto.md>`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(rustdoc::bare_urls)]` on by default
[INFO] [stdout]   = note: bare URLs are not automatically turned into clickable links
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.15s
[INFO] running `Command { std: "docker" "inspect" "0f4d98d0207a28309d36eb8b4b5fdd63871d02f816ce854ecaec2bdae5bb1521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f4d98d0207a28309d36eb8b4b5fdd63871d02f816ce854ecaec2bdae5bb1521", kill_on_drop: false }`
[INFO] [stdout] 0f4d98d0207a28309d36eb8b4b5fdd63871d02f816ce854ecaec2bdae5bb1521