[INFO] fetching crate bppt-wav 0.1.0...
[INFO] testing bppt-wav-0.1.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate bppt-wav 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate bppt-wav 0.1.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bppt-wav 0.1.0
[INFO] finished tweaking crates.io crate bppt-wav 0.1.0
[INFO] tweaked toml for crates.io crate bppt-wav 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate bppt-wav 0.1.0 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lazy-regex-proc_macros v3.0.1
[INFO] [stderr]   Downloaded coreaudio-sys v0.2.12
[INFO] [stderr]   Downloaded toml_edit v0.19.14
[INFO] [stderr]   Downloaded bppt v0.2.4
[INFO] [stderr]   Downloaded nom v1.2.4
[INFO] [stderr]   Downloaded meval v0.2.0
[INFO] [stderr]   Downloaded aho-corasick v1.0.4
[INFO] [stderr]   Downloaded winnow v0.5.12
[INFO] [stderr]   Downloaded lazy-regex v3.0.1
[INFO] [stderr]   Downloaded serde_json v1.0.105
[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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3eaa6ce8bd5663f1f21c2b7db803a868d801a982f20f1e05a844376aa6082135
[INFO] running `Command { std: "docker" "start" "-a" "3eaa6ce8bd5663f1f21c2b7db803a868d801a982f20f1e05a844376aa6082135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3eaa6ce8bd5663f1f21c2b7db803a868d801a982f20f1e05a844376aa6082135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3eaa6ce8bd5663f1f21c2b7db803a868d801a982f20f1e05a844376aa6082135", kill_on_drop: false }`
[INFO] [stdout] 3eaa6ce8bd5663f1f21c2b7db803a868d801a982f20f1e05a844376aa6082135
[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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38800af6f0400014b5a80b9617be093b035259808db4383f18c1db661768e716
[INFO] running `Command { std: "docker" "start" "-a" "38800af6f0400014b5a80b9617be093b035259808db4383f18c1db661768e716", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.63
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling rustix v0.38.8
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling parking_lot_core v0.9.8
[INFO] [stderr]    Compiling linux-raw-sys v0.4.5
[INFO] [stderr]    Compiling bitflags v2.4.0
[INFO] [stderr]    Compiling regex-syntax v0.7.4
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling smallvec v1.11.0
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling cpal v0.15.2
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling anstyle-parse v0.2.1
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]    Compiling serde_json v1.0.105
[INFO] [stderr]    Compiling anstyle v1.0.1
[INFO] [stderr]    Compiling anstyle-query v1.0.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling dasp_sample v0.11.0
[INFO] [stderr]    Compiling option-ext v0.2.0
[INFO] [stderr]    Compiling clap_lex v0.5.0
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.8
[INFO] [stderr]    Compiling nom v1.2.4
[INFO] [stderr]    Compiling hound v3.5.0
[INFO] [stderr]    Compiling aho-corasick v1.0.4
[INFO] [stderr]    Compiling crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling is-terminal v0.4.9
[INFO] [stderr]    Compiling anstream v0.3.2
[INFO] [stderr]    Compiling clap_builder v4.3.21
[INFO] [stderr]    Compiling nix v0.24.3
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling dirs-sys v0.4.1
[INFO] [stderr]    Compiling dirs v5.0.1
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling alsa v0.7.1
[INFO] [stderr]    Compiling regex-automata v0.3.6
[INFO] [stderr]    Compiling rayon v1.7.0
[INFO] [stderr]    Compiling rodio v0.17.1
[INFO] [stderr]    Compiling derive-new v0.5.9
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]    Compiling clap_derive v4.3.12
[INFO] [stderr]    Compiling regex v1.9.3
[INFO] [stderr]    Compiling lazy-regex-proc_macros v3.0.1
[INFO] [stderr]    Compiling clap v4.3.21
[INFO] [stderr]    Compiling lazy-regex v3.0.1
[INFO] [stderr]    Compiling meval v0.2.0
[INFO] [stderr]    Compiling bppt v0.2.4
[INFO] [stderr]    Compiling bppt-wav v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iterator_try_reduce)]
[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 compile `bppt-wav` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "38800af6f0400014b5a80b9617be093b035259808db4383f18c1db661768e716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38800af6f0400014b5a80b9617be093b035259808db4383f18c1db661768e716", kill_on_drop: false }`
[INFO] [stdout] 38800af6f0400014b5a80b9617be093b035259808db4383f18c1db661768e716
