[INFO] cloning repository https://github.com/fin-ger/simple-raft-node
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fin-ger/simple-raft-node" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffin-ger%2Fsimple-raft-node", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffin-ger%2Fsimple-raft-node'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ae32e1719b8164535b855207287b7cd248e1370
[INFO] documenting fin-ger/simple-raft-node against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffin-ger%2Fsimple-raft-node" "/workspace/builds/worker-24/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-24/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fin-ger/simple-raft-node on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fin-ger/simple-raft-node
[INFO] finished tweaking git repo https://github.com/fin-ger/simple-raft-node
[INFO] tweaked toml for git repo https://github.com/fin-ger/simple-raft-node written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] crate git repo https://github.com/fin-ger/simple-raft-node already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/pingcap/raft-rs`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded slog-envlogger v2.2.0
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[INFO] [stderr]   Downloaded env_logger v0.7.0
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[INFO] [stderr]   Downloaded juliex v0.3.0-alpha.8
[INFO] [stderr]   Downloaded rmp-serde v0.14.0
[INFO] [stderr]   Downloaded crossbeam v0.7.2
[INFO] [stderr]   Downloaded async-ready v3.0.0
[INFO] [stderr]   Downloaded async-datagram v3.0.0
[INFO] [stderr]   Downloaded slog-scope v4.1.2
[INFO] [stderr]   Downloaded slog-stdlog v4.0.0
[INFO] [stderr]   Downloaded protobuf-codegen v2.8.1
[INFO] [stderr]   Downloaded runtime-native v0.3.0-alpha.6
[INFO] [stderr]   Downloaded runtime-attributes v0.3.0-alpha.6
[INFO] [stderr]   Downloaded runtime-raw v0.3.0-alpha.5
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[INFO] [stderr]   Downloaded romio v0.3.0-alpha.10
[INFO] [stderr]   Downloaded protobuf-build v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5dd18c63ba91ea890edfa14caa38b181320c954a16d6abecf3aca91804148553
[INFO] running `Command { std: "docker" "start" "-a" "5dd18c63ba91ea890edfa14caa38b181320c954a16d6abecf3aca91804148553", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5dd18c63ba91ea890edfa14caa38b181320c954a16d6abecf3aca91804148553", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dd18c63ba91ea890edfa14caa38b181320c954a16d6abecf3aca91804148553", kill_on_drop: false }`
[INFO] [stdout] 5dd18c63ba91ea890edfa14caa38b181320c954a16d6abecf3aca91804148553
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b571eae4807a160964846ebbd8e58cdf679753c13a7dd00554ee3e134c553a46
[INFO] running `Command { std: "docker" "start" "-a" "b571eae4807a160964846ebbd8e58cdf679753c13a7dd00554ee3e134c553a46", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.64
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling protobuf v2.8.1
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking async-ready v3.0.0
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking async-datagram v3.0.0
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]     Checking hashbrown v0.5.0
[INFO] [stderr]     Checking c_linked_list v1.1.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
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[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking crossbeam v0.7.2
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[INFO] [stderr]     Checking num_cpus v1.10.1
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[INFO] [stderr]     Checking term v0.5.2
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[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking num-integer v0.1.41
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[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling protobuf-codegen v2.8.1
[INFO] [stderr]     Checking slog-term v2.4.1
[INFO] [stderr]     Checking slog-envlogger v2.2.0
[INFO] [stderr]    Compiling protobuf-build v0.10.0
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-timer v0.3.0
[INFO] [stderr]     Checking runtime-raw v0.3.0-alpha.5
[INFO] [stderr]     Checking romio v0.3.0-alpha.10
[INFO] [stderr]     Checking juliex v0.3.0-alpha.8
[INFO] [stderr]    Compiling synstructure v0.12.1
[INFO] [stderr]    Compiling raft-proto v0.6.0-alpha (https://github.com/pingcap/raft-rs?branch=master#d0acd70a)
[INFO] [stderr]     Checking runtime-native v0.3.0-alpha.6
[INFO] [stderr]    Compiling getset v0.0.7
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling runtime-attributes v0.3.0-alpha.6
[INFO] [stderr]     Checking runtime v0.3.0-alpha.7
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking raft v0.6.0-alpha (https://github.com/pingcap/raft-rs?branch=master#d0acd70a)
[INFO] [stderr]     Checking rmp-serde v0.14.0
[INFO] [stderr]  Documenting simple-raft-node v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / #![feature(
[INFO] [stdout] 2 | |     vec_remove_item,
[INFO] [stdout] 3 | |     drain_filter,
[INFO] [stdout] 4 | |     trait_alias,
[INFO] [stdout] 5 | |     fn_traits,
[INFO] [stdout] 6 | | )]
[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 `simple-raft-node`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name simple_raft_node src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=bdf19b78bc9f8944 -L dependency=/opt/rustwide/target/debug/deps --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-be766dbe295a849d.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-5a2115c697e19d03.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-d209f82a72ceb9be.rmeta --extern get_if_addrs=/opt/rustwide/target/debug/deps/libget_if_addrs-b4da9f036438ee38.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-f115c091d543e6ab.rmeta --extern protobuf=/opt/rustwide/target/debug/deps/libprotobuf-01d68b0972c16a54.rmeta --extern raft=/opt/rustwide/target/debug/deps/libraft-975fcd1163833913.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-ad67a126fc29a526.rmeta --extern rmp_serde=/opt/rustwide/target/debug/deps/librmp_serde-14d16c5cf3182936.rmeta --extern runtime=/opt/rustwide/target/debug/deps/libruntime-edaf7c8a878493f8.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-bc23c5a2eb349816.rmeta --extern slog=/opt/rustwide/target/debug/deps/libslog-442bffb74dc8f91b.rmeta --extern slog_envlogger=/opt/rustwide/target/debug/deps/libslog_envlogger-9daaf040f46bc58c.rmeta --extern slog_term=/opt/rustwide/target/debug/deps/libslog_term-9b292dd11609f04c.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "b571eae4807a160964846ebbd8e58cdf679753c13a7dd00554ee3e134c553a46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b571eae4807a160964846ebbd8e58cdf679753c13a7dd00554ee3e134c553a46", kill_on_drop: false }`
[INFO] [stdout] b571eae4807a160964846ebbd8e58cdf679753c13a7dd00554ee3e134c553a46