[INFO] fetching crate rudelblinken-sdk 0.1.0...
[INFO] testing rudelblinken-sdk-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rudelblinken-sdk 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate rudelblinken-sdk 0.1.0
[INFO] finished tweaking crates.io crate rudelblinken-sdk 0.1.0
[INFO] tweaked toml for crates.io crate rudelblinken-sdk 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rudelblinken-sdk 0.1.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 45 packages to latest compatible versions
[INFO] [stderr]       Adding talc v4.4.3 (available: v5.0.3)
[INFO] [stderr]       Adding wit-bindgen v0.36.0 (available: v0.57.1)
[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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 1452513c0421bbde150541a8d95e56f75cb037617fb9aab7bedb6fc16faa2dae
[INFO] running `Command { std: "docker" "start" "-a" "1452513c0421bbde150541a8d95e56f75cb037617fb9aab7bedb6fc16faa2dae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1452513c0421bbde150541a8d95e56f75cb037617fb9aab7bedb6fc16faa2dae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1452513c0421bbde150541a8d95e56f75cb037617fb9aab7bedb6fc16faa2dae", kill_on_drop: false }`
[INFO] [stdout] 1452513c0421bbde150541a8d95e56f75cb037617fb9aab7bedb6fc16faa2dae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] d08c90a13a56c0df6efb36b984ad149e377c366a4b94caa1e7c21301b21506e4
[INFO] running `Command { std: "docker" "start" "-a" "d08c90a13a56c0df6efb36b984ad149e377c366a4b94caa1e7c21301b21506e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling bitflags v2.11.1
[INFO] [stderr]    Compiling semver v1.0.28
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]    Compiling indexmap v2.14.0
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling itoa v1.0.18
[INFO] [stderr]    Compiling prettyplease v0.2.37
[INFO] [stderr]    Compiling leb128 v0.2.6
[INFO] [stderr]    Compiling id-arena v2.3.0
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling wit-bindgen-rust v0.36.0
[INFO] [stderr]    Compiling wit-bindgen-rt v0.36.0
[INFO] [stderr]    Compiling wit-bindgen-rust-macro v0.36.0
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling spdx v0.10.9
[INFO] [stderr]    Compiling talc v4.4.3
[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/talc-4.4.3/src/lib.rs:12:36
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![cfg_attr(feature = "allocator", feature(allocator_api))]
[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 `talc` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d08c90a13a56c0df6efb36b984ad149e377c366a4b94caa1e7c21301b21506e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d08c90a13a56c0df6efb36b984ad149e377c366a4b94caa1e7c21301b21506e4", kill_on_drop: false }`
[INFO] [stdout] d08c90a13a56c0df6efb36b984ad149e377c366a4b94caa1e7c21301b21506e4
