[INFO] fetching crate ozton-control 0.3.0...
[INFO] testing ozton-control-0.3.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate ozton-control 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate ozton-control 0.3.0
[INFO] finished tweaking crates.io crate ozton-control 0.3.0
[INFO] tweaked toml for crates.io crate ozton-control 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ozton-control 0.3.0 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 ozton-control 0.3.0 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" "+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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e5a9bb566ef7a1a4c74b9c884fe39a7eb64d71140def2d1028076ecb632b0f93
[INFO] running `Command { std: "docker" "start" "-a" "e5a9bb566ef7a1a4c74b9c884fe39a7eb64d71140def2d1028076ecb632b0f93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5a9bb566ef7a1a4c74b9c884fe39a7eb64d71140def2d1028076ecb632b0f93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5a9bb566ef7a1a4c74b9c884fe39a7eb64d71140def2d1028076ecb632b0f93", kill_on_drop: false }`
[INFO] [stdout] e5a9bb566ef7a1a4c74b9c884fe39a7eb64d71140def2d1028076ecb632b0f93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e06b076b30ada1a91fd7444388cc6144efd0a307562564ad143411a373901618
[INFO] running `Command { std: "docker" "start" "-a" "e06b076b30ada1a91fd7444388cc6144efd0a307562564ad143411a373901618", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling futures-core v0.3.32
[INFO] [stderr]    Compiling vex-sdk v0.28.0
[INFO] [stderr]    Compiling futures-task v0.3.32
[INFO] [stderr]    Compiling bitflags v2.11.0
[INFO] [stderr]    Compiling async-task v4.7.1
[INFO] [stderr]    Compiling waker-fn v1.2.0
[INFO] [stderr]    Compiling mint v0.5.9
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling async-lock v3.4.2
[INFO] [stderr]    Compiling vexide-async v0.2.0
[INFO] [stderr]    Compiling bytemuck_derive v1.10.2
[INFO] [stderr]    Compiling pin-project-internal v1.1.11
[INFO] [stderr]    Compiling snafu-derive v0.8.9
[INFO] [stderr]    Compiling bytemuck v1.25.0
[INFO] [stderr]    Compiling pin-project v1.1.11
[INFO] [stderr]    Compiling vexide-core v0.8.0
[INFO] [stderr]    Compiling rgb v0.8.53
[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/vexide-core-0.8.0/src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![feature(never_type)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling smart-leds-trait v0.3.2
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vexide-core` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e06b076b30ada1a91fd7444388cc6144efd0a307562564ad143411a373901618", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e06b076b30ada1a91fd7444388cc6144efd0a307562564ad143411a373901618", kill_on_drop: false }`
[INFO] [stdout] e06b076b30ada1a91fd7444388cc6144efd0a307562564ad143411a373901618
