[INFO] cloning repository https://github.com/zkpdf/halo2-sha256-unoptimized
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zkpdf/halo2-sha256-unoptimized" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzkpdf%2Fhalo2-sha256-unoptimized", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzkpdf%2Fhalo2-sha256-unoptimized'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec2d2b28cdb7dd38cb9896b09720d09923fcc2f2
[INFO] testing zkpdf/halo2-sha256-unoptimized against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzkpdf%2Fhalo2-sha256-unoptimized" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-6-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/zkpdf/halo2-sha256-unoptimized
[INFO] finished tweaking git repo https://github.com/zkpdf/halo2-sha256-unoptimized
[INFO] tweaked toml for git repo https://github.com/zkpdf/halo2-sha256-unoptimized written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zkpdf/halo2-sha256-unoptimized 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] crate git repo https://github.com/zkpdf/halo2-sha256-unoptimized 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-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] 9734233e59fc7156dd94430cddda3f48297f46ac9a3909ec136beca91b112ee8
[INFO] running `Command { std: "docker" "start" "-a" "9734233e59fc7156dd94430cddda3f48297f46ac9a3909ec136beca91b112ee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9734233e59fc7156dd94430cddda3f48297f46ac9a3909ec136beca91b112ee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9734233e59fc7156dd94430cddda3f48297f46ac9a3909ec136beca91b112ee8", kill_on_drop: false }`
[INFO] [stdout] 9734233e59fc7156dd94430cddda3f48297f46ac9a3909ec136beca91b112ee8
[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] 7418b27bdb344870f896861c6db7675e9a555610d4fd431a0fad6448f281af4a
[INFO] running `Command { std: "docker" "start" "-a" "7418b27bdb344870f896861c6db7675e9a555610d4fd431a0fad6448f281af4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling subtle v2.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling libm v0.2.7
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling rustix v0.38.14
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling bitflags v2.4.0
[INFO] [stderr]    Compiling linux-raw-sys v0.4.7
[INFO] [stderr]    Compiling base64ct v1.6.0
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling crypto-bigint v0.3.2
[INFO] [stderr]    Compiling const-oid v0.7.1
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling blake2b_simd v1.0.2
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling pem-rfc7468 v0.3.1
[INFO] [stderr]    Compiling thiserror v1.0.48
[INFO] [stderr]    Compiling memchr v2.6.3
[INFO] [stderr]    Compiling zeroize v1.6.0
[INFO] [stderr]    Compiling halo2curves v0.4.0 (https://github.com/axiom-crypto/halo2curves.git?branch=main#e185711b)
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling pin-project-lite v0.2.13
[INFO] [stderr]    Compiling num-bigint-dig v0.8.4
[INFO] [stderr]    Compiling regex-syntax v0.7.5
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]    Compiling tracing-core v0.1.31
[INFO] [stderr]    Compiling crossbeam-channel v0.5.8
[INFO] [stderr]    Compiling keccak v0.1.4
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]    Compiling crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling smallvec v1.11.1
[INFO] [stderr]    Compiling itoa v1.0.9
[INFO] [stderr]    Compiling der v0.5.1
[INFO] [stderr]    Compiling is-terminal v0.4.9
[INFO] [stderr]    Compiling aho-corasick v1.1.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling ff v0.13.0
[INFO] [stderr]    Compiling colored v2.0.4
[INFO] [stderr]    Compiling crossbeam v0.8.2
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling ryu v1.0.15
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling group v0.13.0
[INFO] [stderr]    Compiling rayon v1.8.0
[INFO] [stderr]    Compiling termcolor v1.3.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling pairing v0.23.0
[INFO] [stderr]    Compiling cpufeatures v0.2.9
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling sha2 v0.10.7
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling spki v0.5.4
[INFO] [stderr]    Compiling pkcs8 v0.8.0
[INFO] [stderr]    Compiling pkcs1 v0.3.3
[INFO] [stderr]    Compiling pasta_curves v0.5.1
[INFO] [stderr]    Compiling ark-std v0.3.0
[INFO] [stderr]    Compiling regex-automata v0.3.8
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling getset v0.1.2
[INFO] [stderr]    Compiling maybe-rayon v0.1.1
[INFO] [stderr]    Compiling regex v1.9.5
[INFO] [stderr]    Compiling env_logger v0.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling thiserror-impl v1.0.48
[INFO] [stderr]    Compiling tracing v0.1.37
[INFO] [stderr]    Compiling poseidon-rs v0.1.1 (https://github.com/axiom-crypto/poseidon-circuit.git?rev=1aee4a1#1aee4a1b)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/poseidon-circuit-ba99cd0434acb21f/1aee4a1/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(slice_group_by)]
[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 `poseidon-rs` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7418b27bdb344870f896861c6db7675e9a555610d4fd431a0fad6448f281af4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7418b27bdb344870f896861c6db7675e9a555610d4fd431a0fad6448f281af4a", kill_on_drop: false }`
[INFO] [stdout] 7418b27bdb344870f896861c6db7675e9a555610d4fd431a0fad6448f281af4a
