[INFO] fetching crate finneon 0.1.5...
[INFO] testing finneon-0.1.5 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate finneon 0.1.5 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate finneon 0.1.5
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate finneon 0.1.5
[INFO] tweaked toml for crates.io crate finneon 0.1.5 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate finneon 0.1.5 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate finneon 0.1.5 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-2025-09-21" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efd090e7f261f98cfb03ab9327cc5f30df694eea079036940828e8ecc209f726
[INFO] running `Command { std: "docker" "start" "-a" "efd090e7f261f98cfb03ab9327cc5f30df694eea079036940828e8ecc209f726", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efd090e7f261f98cfb03ab9327cc5f30df694eea079036940828e8ecc209f726", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efd090e7f261f98cfb03ab9327cc5f30df694eea079036940828e8ecc209f726", kill_on_drop: false }`
[INFO] [stdout] efd090e7f261f98cfb03ab9327cc5f30df694eea079036940828e8ecc209f726
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb2b20c71b10d0405cc493c26cbda110e2886762ae384f7c2c795748229de882
[INFO] running `Command { std: "docker" "start" "-a" "fb2b20c71b10d0405cc493c26cbda110e2886762ae384f7c2c795748229de882", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]    Compiling miniz_oxide v0.8.3
[INFO] [stderr]    Compiling anyhow v1.0.95
[INFO] [stderr]    Compiling built v0.7.5
[INFO] [stderr]    Compiling log v0.4.25
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling avif-serialize v0.8.2
[INFO] [stderr]    Compiling half v2.4.1
[INFO] [stderr]    Compiling bytemuck v1.21.0
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling glam v0.30.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling av1-grain v0.2.3
[INFO] [stderr]    Compiling rav1e v0.7.1
[INFO] [stderr]    Compiling qoi v0.4.1
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling flate2 v1.0.35
[INFO] [stderr]    Compiling exr v1.73.0
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling simd_helpers v0.1.0
[INFO] [stderr]    Compiling png v0.17.16
[INFO] [stderr]    Compiling tiff v0.9.1
[INFO] [stderr]    Compiling maybe-rayon v0.1.1
[INFO] [stderr]    Compiling profiling-procmacros v1.0.16
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]    Compiling arg_enum_proc_macro v0.3.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling profiling v1.0.16
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling ravif v0.11.11
[INFO] [stderr]    Compiling image v0.25.5
[INFO] [stderr]    Compiling finneon v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_trait_impl)]
[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 `finneon` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "fb2b20c71b10d0405cc493c26cbda110e2886762ae384f7c2c795748229de882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb2b20c71b10d0405cc493c26cbda110e2886762ae384f7c2c795748229de882", kill_on_drop: false }`
[INFO] [stdout] fb2b20c71b10d0405cc493c26cbda110e2886762ae384f7c2c795748229de882