[INFO] fetching crate proof_gen 0.4.0...
[INFO] testing proof_gen-0.4.0 against 1.95.0 for beta-1.96-2
[INFO] extracting crate proof_gen 0.4.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate proof_gen 0.4.0
[INFO] finished tweaking crates.io crate proof_gen 0.4.0
[INFO] tweaked toml for crates.io crate proof_gen 0.4.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate proof_gen 0.4.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "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" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 156 packages to latest compatible versions
[INFO] [stderr]       Adding evm_arithmetization v0.4.0 (available: v0.5.1)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding plonky2 v0.2.2 (available: v1.1.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded plonky2_field v0.2.2
[INFO] [stderr]   Downloaded plonky2_maybe_rayon v0.2.0
[INFO] [stderr]   Downloaded starky v0.4.0
[INFO] [stderr]   Downloaded ethbloom v0.13.0
[INFO] [stderr]   Downloaded mpt_trie v0.4.1
[INFO] [stderr]   Downloaded ethereum-types v0.14.1
[INFO] [stderr]   Downloaded keccak-hash v0.10.0
[INFO] [stderr]   Downloaded zk_evm_proc_macro v0.1.0
[INFO] [stderr]   Downloaded impl-num-traits v0.1.2
[INFO] [stderr]   Downloaded rlp-derive v0.1.0
[INFO] [stderr]   Downloaded plonky2_util v0.2.0
[INFO] [stderr]   Downloaded plonky2 v0.2.2
[INFO] [stderr]   Downloaded evm_arithmetization v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bdaef7c0761fbae8a001dc4ae534ec628c38643de3ebd74bfdb031f9549f4c34
[INFO] running `Command { std: "docker" "start" "-a" "bdaef7c0761fbae8a001dc4ae534ec628c38643de3ebd74bfdb031f9549f4c34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdaef7c0761fbae8a001dc4ae534ec628c38643de3ebd74bfdb031f9549f4c34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdaef7c0761fbae8a001dc4ae534ec628c38643de3ebd74bfdb031f9549f4c34", kill_on_drop: false }`
[INFO] [stdout] bdaef7c0761fbae8a001dc4ae534ec628c38643de3ebd74bfdb031f9549f4c34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03a9b643753390f53f11503656af548dc5540643b60f31393ea0ec2337e7a40a
[INFO] running `Command { std: "docker" "start" "-a" "03a9b643753390f53f11503656af548dc5540643b60f31393ea0ec2337e7a40a", kill_on_drop: false }`
[INFO] [stderr]    Compiling crunchy v0.2.4
[INFO] [stderr]    Compiling rlp v0.5.2
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling konst_macro_rules v0.2.19
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling parity-scale-codec v3.7.5
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.34
[INFO] [stderr]    Compiling fixed-hash v0.7.0
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling itertools v0.11.0
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling plonky2_util v0.2.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling konst v0.2.20
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling plonky2_maybe_rayon v0.2.0
[INFO] [stderr]    Compiling integer-sqrt v0.1.5
[INFO] [stderr]    Compiling web-time v1.1.0
[INFO] [stderr]    Compiling anstream v1.0.0
[INFO] [stderr]    Compiling rand v0.8.6
[INFO] [stderr]    Compiling uint v0.9.5
[INFO] [stderr]    Compiling impl-rlp v0.3.0
[INFO] [stderr]    Compiling jiff v0.2.24
[INFO] [stderr]    Compiling primitive-types v0.10.1
[INFO] [stderr]    Compiling impl-num-traits v0.1.2
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling const-random-macro v0.1.16
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling hex-literal v0.4.1
[INFO] [stderr]    Compiling const_format v0.2.36
[INFO] [stderr]    Compiling const-random v0.1.18
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling fixed-hash v0.8.0
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling keccak-hash v0.8.0
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling unroll v0.1.5
[INFO] [stderr]    Compiling rlp-derive v0.1.0
[INFO] [stderr]    Compiling env_filter v1.0.1
[INFO] [stderr]    Compiling env_logger v0.11.10
[INFO] [stderr]    Compiling pest_generator v2.8.6
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling enum-as-inner v0.6.1
[INFO] [stderr]    Compiling zk_evm_proc_macro v0.1.0
[INFO] [stderr]    Compiling pest_derive v2.8.6
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling impl-serde v0.4.0
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling plonky2_field v0.2.2
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/plonky2_field-0.2.2/src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling primitive-types v0.12.2
[INFO] [stderr]    Compiling ethbloom v0.13.0
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling impl-codec v0.6.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `plonky2_field` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "03a9b643753390f53f11503656af548dc5540643b60f31393ea0ec2337e7a40a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03a9b643753390f53f11503656af548dc5540643b60f31393ea0ec2337e7a40a", kill_on_drop: false }`
[INFO] [stdout] 03a9b643753390f53f11503656af548dc5540643b60f31393ea0ec2337e7a40a
