[INFO] fetching crate vexide 0.8.0-alpha.2...
[INFO] testing vexide-0.8.0-alpha.2 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate vexide 0.8.0-alpha.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate vexide 0.8.0-alpha.2
[INFO] finished tweaking crates.io crate vexide 0.8.0-alpha.2
[INFO] tweaked toml for crates.io crate vexide 0.8.0-alpha.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vexide 0.8.0-alpha.2 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate vexide 0.8.0-alpha.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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0830aed9a2518496eddce82ff72d8259964f42969e0260fa6d74c729a591695f
[INFO] running `Command { std: "docker" "start" "-a" "0830aed9a2518496eddce82ff72d8259964f42969e0260fa6d74c729a591695f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0830aed9a2518496eddce82ff72d8259964f42969e0260fa6d74c729a591695f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0830aed9a2518496eddce82ff72d8259964f42969e0260fa6d74c729a591695f", kill_on_drop: false }`
[INFO] [stdout] 0830aed9a2518496eddce82ff72d8259964f42969e0260fa6d74c729a591695f
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9f7a5a280101fe8360fb152aebb4315dcfc53524a1642293035c3df60cd1cfa
[INFO] running `Command { std: "docker" "start" "-a" "e9f7a5a280101fe8360fb152aebb4315dcfc53524a1642293035c3df60cd1cfa", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling parking v2.2.1
[INFO] [stderr]    Compiling vex-sdk v0.27.1
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling waker-fn v1.2.0
[INFO] [stderr]    Compiling async-task v4.7.1
[INFO] [stderr]    Compiling mint v0.5.9
[INFO] [stderr]    Compiling rgb v0.8.51
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling smart-leds-trait v0.3.1
[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 v3.4.1
[INFO] [stderr]    Compiling vexide-async v0.2.0-alpha.2
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]    Compiling snafu-derive v0.8.6
[INFO] [stderr]    Compiling pin-project v1.1.10
[INFO] [stderr]    Compiling vexide-core v0.8.0-alpha.2
[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-alpha.2/src/lib.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![feature(never_type)]
[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 `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" "e9f7a5a280101fe8360fb152aebb4315dcfc53524a1642293035c3df60cd1cfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9f7a5a280101fe8360fb152aebb4315dcfc53524a1642293035c3df60cd1cfa", kill_on_drop: false }`
[INFO] [stdout] e9f7a5a280101fe8360fb152aebb4315dcfc53524a1642293035c3df60cd1cfa