[INFO] cloning repository https://github.com/Ocrap7/synth
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ocrap7/synth" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOcrap7%2Fsynth", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOcrap7%2Fsynth'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a3e230ec1d30704830326496873edc0b0ba3ccac
[INFO] documenting Ocrap7/synth against 1.76.0 for beta-1.77-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOcrap7%2Fsynth" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ocrap7/synth on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Ocrap7/synth
[INFO] finished tweaking git repo https://github.com/Ocrap7/synth
[INFO] tweaked toml for git repo https://github.com/Ocrap7/synth written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Ocrap7/synth 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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded coremidi-sys v2.0.2
[INFO] [stderr]   Downloaded rsor v0.1.3
[INFO] [stderr]   Downloaded proc-macro-crate v1.1.2
[INFO] [stderr]   Downloaded coremidi v0.4.0
[INFO] [stderr]   Downloaded midir v0.7.0
[INFO] [stderr]   Downloaded primal-check v0.3.1
[INFO] [stderr]   Downloaded numeric-array v0.5.2
[INFO] [stderr]   Downloaded modulator v0.1.0
[INFO] [stderr]   Downloaded audio-core v0.2.0-alpha.3
[INFO] [stderr]   Downloaded audio v0.2.0-alpha.3
[INFO] [stderr]   Downloaded midi-control v0.2.0
[INFO] [stderr]   Downloaded fundsp v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6eb10f34d1b492162d2109aacdf1ff8ccd1c4aa469c1e1e1016126f0e8476e18
[INFO] running `Command { std: "docker" "start" "-a" "6eb10f34d1b492162d2109aacdf1ff8ccd1c4aa469c1e1e1016126f0e8476e18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6eb10f34d1b492162d2109aacdf1ff8ccd1c4aa469c1e1e1016126f0e8476e18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6eb10f34d1b492162d2109aacdf1ff8ccd1c4aa469c1e1e1016126f0e8476e18", kill_on_drop: false }`
[INFO] [stdout] 6eb10f34d1b492162d2109aacdf1ff8ccd1c4aa469c1e1e1016126f0e8476e18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b056ad16c179bb6914296ca2f8113e825ef8e38bc43844183d86217e56ae2ef
[INFO] running `Command { std: "docker" "start" "-a" "8b056ad16c179bb6914296ca2f8113e825ef8e38bc43844183d86217e56ae2ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking strength_reduce v0.2.3
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking memalloc v0.1.0
[INFO] [stderr]    Compiling cpal v0.13.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking audio-core v0.2.0-alpha.3
[INFO] [stderr]     Checking rsor v0.1.3
[INFO] [stderr]     Checking audio v0.2.0-alpha.3
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking numeric-array v0.5.2
[INFO] [stderr]     Checking primal-check v0.3.1
[INFO] [stderr]     Checking transpose v0.2.1
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking rustfft v6.0.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking modulator v0.1.0
[INFO] [stderr]     Checking alsa v0.6.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking alsa v0.4.3
[INFO] [stderr]     Checking midir v0.7.0
[INFO] [stderr]     Checking midi-control v0.2.0
[INFO] [stderr]     Checking fundsp v0.3.1
[INFO] [stderr]  Documenting synth v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(type_name_of_val)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 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 `synth`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type bin --crate-name synth 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=411ac5975f2b1697 -L dependency=/opt/rustwide/target/debug/deps --extern audio=/opt/rustwide/target/debug/deps/libaudio-e37202316ed47e34.rmeta --extern cpal=/opt/rustwide/target/debug/deps/libcpal-dc615935547e05e9.rmeta --extern fundsp=/opt/rustwide/target/debug/deps/libfundsp-8d0e153b5ba72ebe.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-900704033b235124.rmeta --extern midi_control=/opt/rustwide/target/debug/deps/libmidi_control-b6cc47ef183d1a43.rmeta --extern midir=/opt/rustwide/target/debug/deps/libmidir-df83e9ef7d53c3b6.rmeta --extern modulator=/opt/rustwide/target/debug/deps/libmodulator-cd3e16d85ea7511b.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "8b056ad16c179bb6914296ca2f8113e825ef8e38bc43844183d86217e56ae2ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b056ad16c179bb6914296ca2f8113e825ef8e38bc43844183d86217e56ae2ef", kill_on_drop: false }`
[INFO] [stdout] 8b056ad16c179bb6914296ca2f8113e825ef8e38bc43844183d86217e56ae2ef
