[INFO] fetching crate kommandozeilen_argumente 0.2.1...
[INFO] documenting kommandozeilen_argumente-0.2.1 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate kommandozeilen_argumente 0.2.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate kommandozeilen_argumente 0.2.1 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kommandozeilen_argumente 0.2.1
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate kommandozeilen_argumente 0.2.1
[INFO] tweaked toml for crates.io crate kommandozeilen_argumente 0.2.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate kommandozeilen_argumente 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nonempty v0.8.0
[INFO] [stderr]   Downloaded kommandozeilen_argumente_derive v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ff6c62e5486a7231190fd1a7f6e1990a77bef90755bfe2ca28a4a332924bdca1
[INFO] running `Command { std: "docker" "start" "-a" "ff6c62e5486a7231190fd1a7f6e1990a77bef90755bfe2ca28a4a332924bdca1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff6c62e5486a7231190fd1a7f6e1990a77bef90755bfe2ca28a4a332924bdca1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff6c62e5486a7231190fd1a7f6e1990a77bef90755bfe2ca28a4a332924bdca1", kill_on_drop: false }`
[INFO] [stdout] ff6c62e5486a7231190fd1a7f6e1990a77bef90755bfe2ca28a4a332924bdca1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 611c0d04b43a6f688e8bfea702168ca75e5bee3d9d2f71f9efa247070b11235b
[INFO] running `Command { std: "docker" "start" "-a" "611c0d04b43a6f688e8bfea702168ca75e5bee3d9d2f71f9efa247070b11235b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking nonempty v0.8.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling kommandozeilen_argumente_derive v0.2.0
[INFO] [stderr]  Documenting kommandozeilen_argumente v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:35:37
[INFO] [stdout]    |
[INFO] [stdout] 35 | #![cfg_attr(all(doc, not(doctest)), feature(doc_cfg))]
[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 `kommandozeilen_argumente`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name kommandozeilen_argumente src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="kommandozeilen_argumente_derive"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0cb2d185cbcbbfa2 -L dependency=/opt/rustwide/target/debug/deps --extern either=/opt/rustwide/target/debug/deps/libeither-f0844372f3f0d54e.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-da3c3dbed4b24be3.rmeta --extern kommandozeilen_argumente_derive=/opt/rustwide/target/debug/deps/libkommandozeilen_argumente_derive-32bcd8f6e27d3176.so --extern nonempty=/opt/rustwide/target/debug/deps/libnonempty-44366300fbd7a05d.rmeta --extern unicase=/opt/rustwide/target/debug/deps/libunicase-ceb5d3d902529b3b.rmeta --extern unicode_normalization=/opt/rustwide/target/debug/deps/libunicode_normalization-98040cd52e8c4abe.rmeta --extern unicode_segmentation=/opt/rustwide/target/debug/deps/libunicode_segmentation-e8787b236121abeb.rmeta --extern void=/opt/rustwide/target/debug/deps/libvoid-c94f30799a7ea7a4.rmeta --cap-lints=warn --crate-version 0.2.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "611c0d04b43a6f688e8bfea702168ca75e5bee3d9d2f71f9efa247070b11235b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "611c0d04b43a6f688e8bfea702168ca75e5bee3d9d2f71f9efa247070b11235b", kill_on_drop: false }`
[INFO] [stdout] 611c0d04b43a6f688e8bfea702168ca75e5bee3d9d2f71f9efa247070b11235b
