[INFO] fetching crate zeronet_tracker 0.1.21...
[INFO] documenting zeronet_tracker-0.1.21 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate zeronet_tracker 0.1.21 into /workspace/builds/worker-24/source
[INFO] validating manifest of crates.io crate zeronet_tracker 0.1.21 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 zeronet_tracker 0.1.21
[INFO] finished tweaking crates.io crate zeronet_tracker 0.1.21
[INFO] tweaked toml for crates.io crate zeronet_tracker 0.1.21 written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] crate crates.io crate zeronet_tracker 0.1.21 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 58a78b3bf0dc9bb7977722c6786d4f7117781d6c5e949999ad3b5737ba262206
[INFO] running `Command { std: "docker" "start" "-a" "58a78b3bf0dc9bb7977722c6786d4f7117781d6c5e949999ad3b5737ba262206", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58a78b3bf0dc9bb7977722c6786d4f7117781d6c5e949999ad3b5737ba262206", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58a78b3bf0dc9bb7977722c6786d4f7117781d6c5e949999ad3b5737ba262206", kill_on_drop: false }`
[INFO] [stdout] 58a78b3bf0dc9bb7977722c6786d4f7117781d6c5e949999ad3b5737ba262206
[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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86122840647df60b00eda434dd187b1465af84bd4fbe9f2ed0b0ab120a2f52b5
[INFO] running `Command { std: "docker" "start" "-a" "86122840647df60b00eda434dd187b1465af84bd4fbe9f2ed0b0ab120a2f52b5", 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 autocfg v1.1.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling semver v1.0.9
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking os_str_bytes v6.0.1
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking koibumi-base32 v0.0.2
[INFO] [stderr]     Checking tokio v1.18.2
[INFO] [stderr]     Checking clap_lex v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking rustc_version v0.4.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling zeronet_tracker v0.1.21 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking clap v3.1.18
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking rmp v0.8.11
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking rmpv v1.0.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking serde_bytes v0.11.6
[INFO] [stderr]     Checking rmp-serde v0.15.5
[INFO] [stderr]     Checking zeronet_protocol v0.1.9
[INFO] [stderr]     Checking zeronet_peerdb v0.1.2
[INFO] [stderr]  Documenting zeronet_tracker v0.1.21 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `zeronet_tracker`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name zeronet_tracker src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=e2008e6d014bb331 -L dependency=/opt/rustwide/target/debug/deps --extern base64=/opt/rustwide/target/debug/deps/libbase64-277e048baafe960a.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-28f8211d23f953fa.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-b7ecf30f2b8b6163.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-c2966570978c8032.rmeta --extern pretty_env_logger=/opt/rustwide/target/debug/deps/libpretty_env_logger-8bab8c4eb097abb9.rmeta --extern rustc_version=/opt/rustwide/target/debug/deps/librustc_version-bc0325dc8d982440.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-0bb055ec947444fd.rmeta --extern serde_bytes=/opt/rustwide/target/debug/deps/libserde_bytes-c0c443cbd83b41be.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-e5948d62b3d6da42.rmeta --extern zeronet_peerdb=/opt/rustwide/target/debug/deps/libzeronet_peerdb-90e694aefec250e9.rmeta --extern zeronet_protocol=/opt/rustwide/target/debug/deps/libzeronet_protocol-4c1482aa31b68a43.rmeta --cap-lints=warn --crate-version 0.1.21` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "86122840647df60b00eda434dd187b1465af84bd4fbe9f2ed0b0ab120a2f52b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86122840647df60b00eda434dd187b1465af84bd4fbe9f2ed0b0ab120a2f52b5", kill_on_drop: false }`
[INFO] [stdout] 86122840647df60b00eda434dd187b1465af84bd4fbe9f2ed0b0ab120a2f52b5