[INFO] fetching crate pmdk 0.9.4...
[INFO] documenting pmdk-0.9.4 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate pmdk 0.9.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate pmdk 0.9.4 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d3605272c2a82c640904e98a6cd008bea1ccad2efc76d88c1325bd1fed99d47
[INFO] running `Command { std: "docker" "start" "-a" "1d3605272c2a82c640904e98a6cd008bea1ccad2efc76d88c1325bd1fed99d47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d3605272c2a82c640904e98a6cd008bea1ccad2efc76d88c1325bd1fed99d47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d3605272c2a82c640904e98a6cd008bea1ccad2efc76d88c1325bd1fed99d47", kill_on_drop: false }`
[INFO] [stdout] 1d3605272c2a82c640904e98a6cd008bea1ccad2efc76d88c1325bd1fed99d47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86916e847889c9c31d990bd9e86c96bb60356984d36eb70a8ab943a116f749ed
[INFO] running `Command { std: "docker" "start" "-a" "86916e847889c9c31d990bd9e86c96bb60356984d36eb70a8ab943a116f749ed", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling pmdk-sys v0.9.4
[INFO] [stderr]     Checking backtrace v0.3.61
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]  Documenting pmdk v0.9.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(test)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `pmdk`
[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 --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern crossbeam_queue=/opt/rustwide/target/debug/deps/libcrossbeam_queue-dfc6bd88e1516c05.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-d2a52ea5a143b6cb.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-533cf53875604e8f.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-acd7d23482fe8b54.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-5843a6bc012a5731.rmeta --extern pmdk_sys=/opt/rustwide/target/debug/deps/libpmdk_sys-2f7f5601770f2c9e.rmeta --cap-lints=warn --crate-version 0.9.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "86916e847889c9c31d990bd9e86c96bb60356984d36eb70a8ab943a116f749ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86916e847889c9c31d990bd9e86c96bb60356984d36eb70a8ab943a116f749ed", kill_on_drop: false }`
[INFO] [stdout] 86916e847889c9c31d990bd9e86c96bb60356984d36eb70a8ab943a116f749ed
