[INFO] fetching crate prover-executor 1.0.0...
[INFO] testing prover-executor-1.0.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate prover-executor 1.0.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate prover-executor 1.0.0
[INFO] finished tweaking crates.io crate prover-executor 1.0.0
[INFO] tweaked toml for crates.io crate prover-executor 1.0.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate prover-executor 1.0.0 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 crates.io crate prover-executor 1.0.0 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-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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a8204b26af45cae7cebab9ce396024ea28c7de1f4b12d1842b3a79a4217d7601
[INFO] running `Command { std: "docker" "start" "-a" "a8204b26af45cae7cebab9ce396024ea28c7de1f4b12d1842b3a79a4217d7601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8204b26af45cae7cebab9ce396024ea28c7de1f4b12d1842b3a79a4217d7601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8204b26af45cae7cebab9ce396024ea28c7de1f4b12d1842b3a79a4217d7601", kill_on_drop: false }`
[INFO] [stdout] a8204b26af45cae7cebab9ce396024ea28c7de1f4b12d1842b3a79a4217d7601
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 654c85aacd49ea5991ae56335b701499b5687bb5220ce7058d5a6acc265d3953
[INFO] running `Command { std: "docker" "start" "-a" "654c85aacd49ea5991ae56335b701499b5687bb5220ce7058d5a6acc265d3953", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling allocator-api2 v0.2.21
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling rustversion v1.0.20
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling funty v2.0.0
[INFO] [stderr]    Compiling foldhash v0.1.5
[INFO] [stderr]    Compiling wyz v0.5.1
[INFO] [stderr]    Compiling hashbrown v0.15.3
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling jobserver v0.1.33
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling bitvec v1.0.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling cc v1.2.23
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling base64ct v1.7.3
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling crunchy v0.2.3
[INFO] [stderr]    Compiling pem-rfc7468 v0.7.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling toml_write v0.1.1
[INFO] [stderr]    Compiling winnow v0.7.10
[INFO] [stderr]    Compiling constant_time_eq v0.3.1
[INFO] [stderr]    Compiling arrayref v0.3.9
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling gcd v2.3.0
[INFO] [stderr]    Compiling tower-service v0.3.3
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling signal-hook-registry v1.4.5
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling blake3 v1.8.2
[INFO] [stderr]    Compiling socket2 v0.5.9
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling addchain v0.2.0
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling utf8parse v0.2.2
[INFO] [stderr]    Compiling try-lock v0.2.5
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling anstyle-parse v0.2.6
[INFO] [stderr]    Compiling want v0.3.1
[INFO] [stderr]    Compiling colorchoice v1.0.3
[INFO] [stderr]    Compiling untrusted v0.9.0
[INFO] [stderr]    Compiling anstyle-query v1.1.2
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.1
[INFO] [stderr]    Compiling anstyle v1.0.10
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling clap_lex v0.7.4
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]    Compiling anstream v0.6.18
[INFO] [stderr]    Compiling litemap v0.8.0
[INFO] [stderr]    Compiling writeable v0.6.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling tower-layer v0.3.3
[INFO] [stderr]    Compiling sync_wrapper v1.0.2
[INFO] [stderr]    Compiling rustix v1.0.7
[INFO] [stderr]    Compiling icu_normalizer_data v2.0.0
[INFO] [stderr]    Compiling icu_properties_data v2.0.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling p3-maybe-rayon v0.2.2-succinct
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling linux-raw-sys v0.9.4
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling num-modular v0.6.1
[INFO] [stderr]    Compiling ruint-macro v1.2.1
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling clap_builder v4.5.38
[INFO] [stderr]    Compiling cbindgen v0.27.0
[INFO] [stderr]    Compiling rayon-scan v0.1.1
[INFO] [stderr]    Compiling sysinfo v0.30.13
[INFO] [stderr]    Compiling strum v0.26.3
[INFO] [stderr]    Compiling atomic-waker v1.1.2
[INFO] [stderr]    Compiling anyhow v1.0.98
[INFO] [stderr]    Compiling pathdiff v0.2.3
[INFO] [stderr]    Compiling httpdate v1.0.3
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling ff v0.12.1
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling dashu-base v0.4.1
[INFO] [stderr]    Compiling base64 v0.22.1
[INFO] [stderr]    Compiling utf8_iter v1.0.4
[INFO] [stderr]    Compiling memuse v0.2.2
[INFO] [stderr]    Compiling num-order v1.2.0
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.34
[INFO] [stderr]    Compiling rustls-pki-types v1.12.0
[INFO] [stderr]    Compiling parity-scale-codec v3.7.4
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling group v0.12.1
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling smallvec v1.15.0
[INFO] [stderr]    Compiling dashu-int v0.4.1
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling const_format v0.2.34
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2026-04-21-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.101/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit"' --cfg 'feature="visit-mut"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "test", "visit", "visit-mut"))' -C metadata=627c899a37f796d9 -C extra-filename=-5b177bfd4686d588 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-c09048c77d6dd0d8.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-0431a71a56ef9e12.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-6572fa6bb87326c0.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "654c85aacd49ea5991ae56335b701499b5687bb5220ce7058d5a6acc265d3953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "654c85aacd49ea5991ae56335b701499b5687bb5220ce7058d5a6acc265d3953", kill_on_drop: false }`
[INFO] [stdout] 654c85aacd49ea5991ae56335b701499b5687bb5220ce7058d5a6acc265d3953
