[INFO] fetching crate playback-rs 0.4.2...
[INFO] documenting playback-rs-0.4.2 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate playback-rs 0.4.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate playback-rs 0.4.2 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 playback-rs 0.4.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate playback-rs 0.4.2
[INFO] tweaked toml for crates.io crate playback-rs 0.4.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate playback-rs 0.4.2 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 tracing-error v0.2.0
[INFO] [stderr]   Downloaded color-spantrace v0.2.0
[INFO] [stderr]   Downloaded color-eyre v0.6.2
[INFO] [stderr]   Downloaded gimli v0.27.1
[INFO] [stderr]   Downloaded cpal v0.15.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 409db94335e5ba57d84cca98fa59be021fbc5659819dcbd47aa8736aaecae77f
[INFO] running `Command { std: "docker" "start" "-a" "409db94335e5ba57d84cca98fa59be021fbc5659819dcbd47aa8736aaecae77f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "409db94335e5ba57d84cca98fa59be021fbc5659819dcbd47aa8736aaecae77f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "409db94335e5ba57d84cca98fa59be021fbc5659819dcbd47aa8736aaecae77f", kill_on_drop: false }`
[INFO] [stdout] 409db94335e5ba57d84cca98fa59be021fbc5659819dcbd47aa8736aaecae77f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 69d87a75381d89a1a986f8247a8e88bde4ca51fde543d8e94fb44c4e038cc5f9
[INFO] running `Command { std: "docker" "start" "-a" "69d87a75381d89a1a986f8247a8e88bde4ca51fde543d8e94fb44c4e038cc5f9", kill_on_drop: false }`
[INFO] [stderr]     Checking bytemuck v1.13.0
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking once_cell v1.17.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling rustfft v6.1.0
[INFO] [stderr]     Checking strength_reduce v0.2.4
[INFO] [stderr]    Compiling backtrace v0.3.67
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]     Checking gimli v0.27.1
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking symphonia-core v0.5.2
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking owo-colors v3.5.0
[INFO] [stderr]    Compiling cpal v0.15.0
[INFO] [stderr]     Checking dasp_sample v0.11.0
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking tracing-subscriber v0.3.16
[INFO] [stderr]     Checking object v0.30.3
[INFO] [stderr]     Checking primal-check v0.3.3
[INFO] [stderr]     Checking transpose v0.2.2
[INFO] [stderr]     Checking symphonia-metadata v0.5.2
[INFO] [stderr]     Checking symphonia-codec-pcm v0.5.2
[INFO] [stderr]     Checking symphonia-codec-adpcm v0.5.2
[INFO] [stderr]     Checking symphonia-codec-aac v0.5.2
[INFO] [stderr]     Checking symphonia-codec-alac v0.5.2
[INFO] [stderr]     Checking tracing-error v0.2.0
[INFO] [stderr]     Checking symphonia-utils-xiph v0.5.2
[INFO] [stderr]     Checking symphonia-bundle-mp3 v0.5.2
[INFO] [stderr]     Checking symphonia-format-wav v0.5.2
[INFO] [stderr]     Checking nix v0.24.3
[INFO] [stderr]     Checking alsa-sys v0.3.1
[INFO] [stderr]     Checking parking_lot_core v0.9.7
[INFO] [stderr]     Checking color-spantrace v0.2.0
[INFO] [stderr]     Checking symphonia-format-isomp4 v0.5.2
[INFO] [stderr]     Checking symphonia-bundle-flac v0.5.2
[INFO] [stderr]     Checking symphonia-format-mkv v0.5.2
[INFO] [stderr]     Checking symphonia-codec-vorbis v0.5.2
[INFO] [stderr]     Checking symphonia-format-ogg v0.5.2
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking alsa v0.7.0
[INFO] [stderr]     Checking addr2line v0.19.0
[INFO] [stderr]     Checking symphonia v0.5.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.38
[INFO] [stderr]     Checking color-eyre v0.6.2
[INFO] [stderr]     Checking realfft v3.2.0
[INFO] [stderr]     Checking rubato v0.12.0
[INFO] [stderr]  Documenting playback-rs v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(c_variadic)]
[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 `playback-rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name playback_rs src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=edb7efa59559a572 -L dependency=/opt/rustwide/target/debug/deps --extern alsa_sys=/opt/rustwide/target/debug/deps/libalsa_sys-d52cdc5cb475750e.rmeta --extern color_eyre=/opt/rustwide/target/debug/deps/libcolor_eyre-53cb4e06a741b27c.rmeta --extern cpal=/opt/rustwide/target/debug/deps/libcpal-19296fb9bed6d214.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-43372439ad3c157d.rmeta --extern rubato=/opt/rustwide/target/debug/deps/librubato-0fb57febc062c727.rmeta --extern symphonia=/opt/rustwide/target/debug/deps/libsymphonia-0cd0a7b5e913c347.rmeta --cap-lints=warn --crate-version 0.4.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "69d87a75381d89a1a986f8247a8e88bde4ca51fde543d8e94fb44c4e038cc5f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69d87a75381d89a1a986f8247a8e88bde4ca51fde543d8e94fb44c4e038cc5f9", kill_on_drop: false }`
[INFO] [stdout] 69d87a75381d89a1a986f8247a8e88bde4ca51fde543d8e94fb44c4e038cc5f9
