[INFO] cloning repository https://github.com/torbencarstens/ufw-parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/torbencarstens/ufw-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorbencarstens%2Fufw-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftorbencarstens%2Fufw-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a500831a515228ea4ccc7e834f0f7fac51829c10
[INFO] documenting torbencarstens/ufw-parser 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%2Ftorbencarstens%2Fufw-parser" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/torbencarstens/ufw-parser 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/torbencarstens/ufw-parser
[INFO] finished tweaking git repo https://github.com/torbencarstens/ufw-parser
[INFO] tweaked toml for git repo https://github.com/torbencarstens/ufw-parser written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/torbencarstens/ufw-parser 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded configparser v1.0.0
[INFO] [stderr]   Downloaded bitstring v0.1.1
[INFO] [stderr]   Downloaded ini v1.3.0
[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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48503653bb988866070cac7321dca48c498d7bb9fd787b415475826e51212dff
[INFO] running `Command { std: "docker" "start" "-a" "48503653bb988866070cac7321dca48c498d7bb9fd787b415475826e51212dff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48503653bb988866070cac7321dca48c498d7bb9fd787b415475826e51212dff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48503653bb988866070cac7321dca48c498d7bb9fd787b415475826e51212dff", kill_on_drop: false }`
[INFO] [stdout] 48503653bb988866070cac7321dca48c498d7bb9fd787b415475826e51212dff
[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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4aa7cc4337ea03cf0885cee36aced27b0da7b5f123388cc6e3c3f95ebe03a1b
[INFO] running `Command { std: "docker" "start" "-a" "f4aa7cc4337ea03cf0885cee36aced27b0da7b5f123388cc6e3c3f95ebe03a1b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking configparser v1.0.0
[INFO] [stderr]     Checking bitstring v0.1.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking ini v1.3.0
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]  Documenting ufw_auto_block 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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(str_split_once)]
[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 `ufw_auto_block`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name ufw_auto_block src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b0e886bb1e0772c0 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-4157d843ebbebce6.rmeta --extern bitstring=/opt/rustwide/target/debug/deps/libbitstring-1471b5563cdb08be.rmeta --extern ini=/opt/rustwide/target/debug/deps/libini-262a4d5a3abe1c84.rmeta --extern pest=/opt/rustwide/target/debug/deps/libpest-ad621116ccc3017c.rmeta --extern pest_derive=/opt/rustwide/target/debug/deps/libpest_derive-745b696ad8eff650.so --extern regex=/opt/rustwide/target/debug/deps/libregex-7f7c07494e82902c.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-0f6e0a81a8f1b7e4.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-f7334c9e5f14ca09.so --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-2dd788f25ab46cea.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-b1b21985c23567e7.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "f4aa7cc4337ea03cf0885cee36aced27b0da7b5f123388cc6e3c3f95ebe03a1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4aa7cc4337ea03cf0885cee36aced27b0da7b5f123388cc6e3c3f95ebe03a1b", kill_on_drop: false }`
[INFO] [stdout] f4aa7cc4337ea03cf0885cee36aced27b0da7b5f123388cc6e3c3f95ebe03a1b