[INFO] fetching crate pmdk 0.9.4...
[INFO] documenting pmdk-0.9.4 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate pmdk 0.9.4 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate pmdk 0.9.4 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 pmdk 0.9.4
[INFO] finished tweaking crates.io crate pmdk 0.9.4
[INFO] tweaked toml for crates.io crate pmdk 0.9.4 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 2bb23de431023e4b15c8fc00c39d0f64a32c7aeee38577b1700a89ee51aebc13
[INFO] running `Command { std: "docker" "start" "-a" "2bb23de431023e4b15c8fc00c39d0f64a32c7aeee38577b1700a89ee51aebc13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bb23de431023e4b15c8fc00c39d0f64a32c7aeee38577b1700a89ee51aebc13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bb23de431023e4b15c8fc00c39d0f64a32c7aeee38577b1700a89ee51aebc13", kill_on_drop: false }`
[INFO] [stdout] 2bb23de431023e4b15c8fc00c39d0f64a32c7aeee38577b1700a89ee51aebc13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 1f1a9d6ca17f7411c902f92ff684140d2d6ee3bb7fd45b90dd9e785f8250cd82
[INFO] running `Command { std: "docker" "start" "-a" "1f1a9d6ca17f7411c902f92ff684140d2d6ee3bb7fd45b90dd9e785f8250cd82", 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 libc v0.2.126
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling pmdk-sys v0.9.4
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking serde v1.0.137
[INFO] [stderr]  Documenting pmdk v0.9.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(test)]
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `pmdk`
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name pmdk src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=e4b6de86f3b91aaa -L dependency=/opt/rustwide/target/debug/deps --extern crossbeam_queue=/opt/rustwide/target/debug/deps/libcrossbeam_queue-251ea8e7cb73d6c0.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-e42edd5ea08087ff.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-5fb8330047908de9.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-701e134f05ff346a.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-8e4e2b8835c2ad75.rmeta --extern pmdk_sys=/opt/rustwide/target/debug/deps/libpmdk_sys-7bb328baf7e01e84.rmeta --cap-lints=warn --crate-version 0.9.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "1f1a9d6ca17f7411c902f92ff684140d2d6ee3bb7fd45b90dd9e785f8250cd82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f1a9d6ca17f7411c902f92ff684140d2d6ee3bb7fd45b90dd9e785f8250cd82", kill_on_drop: false }`
[INFO] [stdout] 1f1a9d6ca17f7411c902f92ff684140d2d6ee3bb7fd45b90dd9e785f8250cd82