[INFO] fetching crate simdnbt 0.8.0...
[INFO] testing simdnbt-0.8.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate simdnbt 0.8.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate simdnbt 0.8.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate simdnbt 0.8.0
[INFO] tweaked toml for crates.io crate simdnbt 0.8.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate simdnbt 0.8.0 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 simdnbt 0.8.0 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-2025-10-28" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4830edf19d7c880fe67f47f6139bc140991891e53c48f3ce896383b410dbbc8c
[INFO] running `Command { std: "docker" "start" "-a" "4830edf19d7c880fe67f47f6139bc140991891e53c48f3ce896383b410dbbc8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4830edf19d7c880fe67f47f6139bc140991891e53c48f3ce896383b410dbbc8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4830edf19d7c880fe67f47f6139bc140991891e53c48f3ce896383b410dbbc8c", kill_on_drop: false }`
[INFO] [stdout] 4830edf19d7c880fe67f47f6139bc140991891e53c48f3ce896383b410dbbc8c
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55fa91132547de0350ef3eacc70c4f09cd63f675798229999dd68d19021a7823
[INFO] running `Command { std: "docker" "start" "-a" "55fa91132547de0350ef3eacc70c4f09cd63f675798229999dd68d19021a7823", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.100
[INFO] [stderr]    Compiling thiserror v2.0.15
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling simdutf8 v0.1.5
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling simd_cesu8 v1.1.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling flate2 v1.1.2
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling thiserror-impl v2.0.15
[INFO] [stderr]    Compiling simdnbt-derive v0.8.0
[INFO] [stderr]    Compiling simdnbt v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(portable_simd)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![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 `simdnbt` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "55fa91132547de0350ef3eacc70c4f09cd63f675798229999dd68d19021a7823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55fa91132547de0350ef3eacc70c4f09cd63f675798229999dd68d19021a7823", kill_on_drop: false }`
[INFO] [stdout] 55fa91132547de0350ef3eacc70c4f09cd63f675798229999dd68d19021a7823