[INFO] fetching crate hostname 0.3.1... [INFO] documenting hostname-0.3.1 against beta-2022-05-20 for beta-1.62-rustdoc-1 [INFO] extracting crate hostname 0.3.1 into /workspace/builds/worker-4/source [INFO] validating manifest of crates.io crate hostname 0.3.1 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 hostname 0.3.1 [INFO] finished tweaking crates.io crate hostname 0.3.1 [INFO] tweaked toml for crates.io crate hostname 0.3.1 written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate crates.io crate hostname 0.3.1 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] [stdout] ce9e9dcf03c2d475691427faa6d2dcb7a1cafe813e526ac94d2f4c85c065ecdf [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" "ce9e9dcf03c2d475691427faa6d2dcb7a1cafe813e526ac94d2f4c85c065ecdf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ce9e9dcf03c2d475691427faa6d2dcb7a1cafe813e526ac94d2f4c85c065ecdf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ce9e9dcf03c2d475691427faa6d2dcb7a1cafe813e526ac94d2f4c85c065ecdf", kill_on_drop: false }` [INFO] [stdout] ce9e9dcf03c2d475691427faa6d2dcb7a1cafe813e526ac94d2f4c85c065ecdf [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] f64ee305542304065142f7c3322ca8f1e70c8f61935ebbdfd5f3e05b0cca45de [INFO] running `Command { std: "docker" "start" "-a" "f64ee305542304065142f7c3322ca8f1e70c8f61935ebbdfd5f3e05b0cca45de", kill_on_drop: false }` [INFO] [stderr] Documenting hostname v0.3.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.20s [INFO] running `Command { std: "docker" "inspect" "f64ee305542304065142f7c3322ca8f1e70c8f61935ebbdfd5f3e05b0cca45de", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f64ee305542304065142f7c3322ca8f1e70c8f61935ebbdfd5f3e05b0cca45de", kill_on_drop: false }` [INFO] [stdout] f64ee305542304065142f7c3322ca8f1e70c8f61935ebbdfd5f3e05b0cca45de [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" "--features" "set" "--frozen" "--message-format=json" "--" "--cfg" "docsrs" "-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] e0ad138861531629e0f1c6b46c511ba42ae1e32cb67d2447b73529d749b90d39 [INFO] running `Command { std: "docker" "start" "-a" "e0ad138861531629e0f1c6b46c511ba42ae1e32cb67d2447b73529d749b90d39", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.66 [INFO] [stderr] Checking match_cfg v0.1.0 [INFO] [stderr] Documenting hostname v0.3.1 (/opt/rustwide/workdir) [INFO] [stdout] error[E0658]: `#[doc(cfg)]` is experimental [INFO] [stdout] --> src/lib.rs:142:20 [INFO] [stdout] | [INFO] [stdout] 142 | #[cfg_attr(docsrs, doc(cfg(feature = "set")))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #43781 for more information [INFO] [stdout] = help: add `#![feature(doc_cfg)]` to the crate attributes to enable [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: Compilation failed, aborting rustdoc [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0658`. [INFO] [stdout] [INFO] [stderr] error: could not document `hostname` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `rustdoc --crate-type lib --crate-name hostname src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="set"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --cfg docsrs -Z unstable-options --document-private-items -C metadata=a5ac8e8ef23f9c59 -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-d26b04d82642b069.rmeta --extern match_cfg=/opt/rustwide/target/debug/deps/libmatch_cfg-73f6fa9c245b8509.rmeta --extern-html-root-url 'libc=https://docs.rs/libc/0.2.66/' --extern-html-root-url 'match_cfg=https://docs.rs/match_cfg/0.1.0/' -Zunstable-options --crate-version 0.3.1` (exit status: 1) [INFO] running `Command { std: "docker" "inspect" "e0ad138861531629e0f1c6b46c511ba42ae1e32cb67d2447b73529d749b90d39", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e0ad138861531629e0f1c6b46c511ba42ae1e32cb67d2447b73529d749b90d39", kill_on_drop: false }` [INFO] [stdout] e0ad138861531629e0f1c6b46c511ba42ae1e32cb67d2447b73529d749b90d39