[INFO] fetching crate synthphonia-rs 0.1.1...
[INFO] testing synthphonia-rs-0.1.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate synthphonia-rs 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate synthphonia-rs 0.1.1
[INFO] finished tweaking crates.io crate synthphonia-rs 0.1.1
[INFO] tweaked toml for crates.io crate synthphonia-rs 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate synthphonia-rs 0.1.1 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate synthphonia-rs 0.1.1 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef73f8ee8fbeb71c119f8984419729cb40c96d7255809fe62a162da349edb99f
[INFO] running `Command { std: "docker" "start" "-a" "ef73f8ee8fbeb71c119f8984419729cb40c96d7255809fe62a162da349edb99f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef73f8ee8fbeb71c119f8984419729cb40c96d7255809fe62a162da349edb99f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef73f8ee8fbeb71c119f8984419729cb40c96d7255809fe62a162da349edb99f", kill_on_drop: false }`
[INFO] [stdout] ef73f8ee8fbeb71c119f8984419729cb40c96d7255809fe62a162da349edb99f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ded9a1ad1b3c5cbdc38e18f6af074e66c149da02caaee619d876505350c0f50
[INFO] running `Command { std: "docker" "start" "-a" "3ded9a1ad1b3c5cbdc38e18f6af074e66c149da02caaee619d876505350c0f50", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling smallvec v1.14.0
[INFO] [stderr]    Compiling zerocopy v0.8.23
[INFO] [stderr]    Compiling once_cell v1.21.1
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling convert_case v0.7.1
[INFO] [stderr]    Compiling indexmap v2.8.0
[INFO] [stderr]    Compiling anstyle-parse v0.2.6
[INFO] [stderr]    Compiling anstyle v1.0.10
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.1
[INFO] [stderr]    Compiling colorchoice v1.0.3
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling anstyle-query v1.1.2
[INFO] [stderr]    Compiling winnow v0.7.4
[INFO] [stderr]    Compiling uncased v0.9.10
[INFO] [stderr]    Compiling figment v0.10.19
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling clap_lex v0.7.4
[INFO] [stderr]    Compiling anstream v0.6.18
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling nibble_vec v0.1.0
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling iana-time-zone v0.1.61
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling endian-type v0.1.2
[INFO] [stderr]    Compiling clap_builder v4.5.32
[INFO] [stderr]    Compiling radix_trie v0.2.1
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling bumpalo v3.17.0
[INFO] [stderr]    Compiling joinery v3.1.0
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling iset v0.2.2
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling chrono v0.4.40
[INFO] [stderr]    Compiling counter v0.6.0
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling socket2 v0.5.8
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling fid-rs v0.1.1
[INFO] [stderr]    Compiling louds-rs v0.4.0
[INFO] [stderr]    Compiling kv-trie-rs v0.1.2
[INFO] [stderr]    Compiling ext-trait-proc_macros v1.0.1
[INFO] [stderr]    Compiling ext-trait v1.0.1
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling derive_more-impl v2.0.1
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling clap_derive v4.5.32
[INFO] [stderr]    Compiling derive_more v0.99.19
[INFO] [stderr]    Compiling enum_dispatch v0.3.13
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling tokio v1.44.1
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling pest v2.7.15
[INFO] [stderr]    Compiling clap v4.5.32
[INFO] [stderr]    Compiling pest_meta v2.7.15
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling pest_generator v2.7.15
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling pest_derive v2.7.15
[INFO] [stderr]    Compiling derive_more v2.0.1
[INFO] [stderr]    Compiling simple-rc-async v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/simple-rc-async-0.1.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(local_waker)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `simple-rc-async` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3ded9a1ad1b3c5cbdc38e18f6af074e66c149da02caaee619d876505350c0f50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ded9a1ad1b3c5cbdc38e18f6af074e66c149da02caaee619d876505350c0f50", kill_on_drop: false }`
[INFO] [stdout] 3ded9a1ad1b3c5cbdc38e18f6af074e66c149da02caaee619d876505350c0f50
