[INFO] fetching crate primesieve_wrapper 0.1.0...
[INFO] testing primesieve_wrapper-0.1.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate primesieve_wrapper 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate primesieve_wrapper 0.1.0
[INFO] finished tweaking crates.io crate primesieve_wrapper 0.1.0
[INFO] tweaked toml for crates.io crate primesieve_wrapper 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate primesieve_wrapper 0.1.0 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 primesieve_wrapper 0.1.0 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] d75daf5b171be836877bede36d3613bfe2bd77247a815f750ac887d9d5a250d6
[INFO] running `Command { std: "docker" "start" "-a" "d75daf5b171be836877bede36d3613bfe2bd77247a815f750ac887d9d5a250d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d75daf5b171be836877bede36d3613bfe2bd77247a815f750ac887d9d5a250d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d75daf5b171be836877bede36d3613bfe2bd77247a815f750ac887d9d5a250d6", kill_on_drop: false }`
[INFO] [stdout] d75daf5b171be836877bede36d3613bfe2bd77247a815f750ac887d9d5a250d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] de0caf6f6da9b20270c37314387923a55a5ef5acd29073cb77ed5a91c287e834
[INFO] running `Command { std: "docker" "start" "-a" "de0caf6f6da9b20270c37314387923a55a5ef5acd29073cb77ed5a91c287e834", kill_on_drop: false }`
[INFO] [stderr]    Compiling primesieve_wrapper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/primesieve_wrapper.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(core_intrinsics, ptr_as_ref_unchecked)]
[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 `primesieve_wrapper` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "de0caf6f6da9b20270c37314387923a55a5ef5acd29073cb77ed5a91c287e834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de0caf6f6da9b20270c37314387923a55a5ef5acd29073cb77ed5a91c287e834", kill_on_drop: false }`
[INFO] [stdout] de0caf6f6da9b20270c37314387923a55a5ef5acd29073cb77ed5a91c287e834