[INFO] fetching crate spark-cli 0.7.1...
[INFO] testing spark-cli-0.7.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate spark-cli 0.7.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate spark-cli 0.7.1
[INFO] finished tweaking crates.io crate spark-cli 0.7.1
[INFO] tweaked toml for crates.io crate spark-cli 0.7.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate spark-cli 0.7.1 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 spark-cli 0.7.1 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 19c7cef62b15dc7ac8a32e31266ffb0d373151884cc2c0bf883a0903056dda40
[INFO] running `Command { std: "docker" "start" "-a" "19c7cef62b15dc7ac8a32e31266ffb0d373151884cc2c0bf883a0903056dda40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19c7cef62b15dc7ac8a32e31266ffb0d373151884cc2c0bf883a0903056dda40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19c7cef62b15dc7ac8a32e31266ffb0d373151884cc2c0bf883a0903056dda40", kill_on_drop: false }`
[INFO] [stdout] 19c7cef62b15dc7ac8a32e31266ffb0d373151884cc2c0bf883a0903056dda40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c2d575685fc8227c59baf4520ea932aba7f555dcd99793a3b10ea80a67ef27c0
[INFO] running `Command { std: "docker" "start" "-a" "c2d575685fc8227c59baf4520ea932aba7f555dcd99793a3b10ea80a67ef27c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.87
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling foldhash v0.1.3
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling pin-project-lite v0.2.14
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling cpufeatures v0.2.14
[INFO] [stderr]    Compiling thiserror v1.0.64
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling rustversion v1.0.18
[INFO] [stderr]    Compiling allocator-api2 v0.2.18
[INFO] [stderr]    Compiling hashbrown v0.15.0
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]    Compiling ryu v1.0.18
[INFO] [stderr]    Compiling anyhow v1.0.96
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling hash32 v0.2.1
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stderr]    Compiling cobs v0.2.3
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling winnow v0.6.20
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]    Compiling curve25519-dalek v4.1.3
[INFO] [stderr]    Compiling fixed-hash v0.8.0
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]    Compiling ethnum v1.5.0
[INFO] [stderr]    Compiling fuel-storage v0.58.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling predicates-core v1.0.8
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling impl-tools v0.10.0
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling termtree v0.4.1
[INFO] [stderr]    Compiling downcast v0.11.0
[INFO] [stderr]    Compiling fragile v2.0.0
[INFO] [stderr]    Compiling predicates-tree v1.0.11
[INFO] [stderr]    Compiling httparse v1.9.5
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling tinyvec v1.8.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.17
[INFO] [stderr]    Compiling rustls v0.21.12
[INFO] [stderr]    Compiling time-core v0.1.2
[INFO] [stderr]    Compiling cranelift-isle v0.110.3
[INFO] [stderr]    Compiling time-macros v0.2.18
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling jobserver v0.1.32
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling regex-automata v0.4.8
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling ff v0.13.0
[INFO] [stderr]    Compiling mio v1.0.2
[INFO] [stderr]    Compiling cc v1.1.30
[INFO] [stderr]    Compiling group v0.13.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling deranged v0.3.11
[INFO] [stderr]    Compiling cookie v0.17.0
[INFO] [stderr]    Compiling target-lexicon v0.12.16
[INFO] [stderr]    Compiling unicode-normalization v0.1.24
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.110.3
[INFO] [stderr]    Compiling rustls-native-certs v0.6.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.110.3
[INFO] [stderr]    Compiling encoding_rs v0.8.34
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling pkg-config v0.3.31
[INFO] [stderr]    Compiling prometheus-client v0.22.3
[INFO] [stderr]    Compiling psl-types v2.0.11
[INFO] [stderr]    Compiling idna v0.5.0
[INFO] [stderr]    Compiling idna v0.3.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling time v0.3.36
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling dtoa v1.0.9
[INFO] [stderr]    Compiling ascii v0.9.3
[INFO] [stderr]    Compiling slice-group-by v0.3.1
[INFO] [stderr]    Compiling publicsuffix v2.2.3
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling rustix v0.38.37
[INFO] [stderr]    Compiling url v2.5.2
[INFO] [stderr]    Compiling arbitrary v1.4.0
[INFO] [stderr]    Compiling fuel-storage v0.56.0
[INFO] [stderr]    Compiling combine v3.8.1
[INFO] [stderr]    Compiling bumpalo v3.16.0
[INFO] [stderr]    Compiling ipnet v2.10.1
[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling counter v0.5.7
[INFO] [stderr]    Compiling zstd-safe v7.2.1
[INFO] [stderr]    Compiling crc32fast v1.4.2
[INFO] [stderr]    Compiling leb128 v0.2.5
[INFO] [stderr]    Compiling secp256k1-sys v0.10.1
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling darling_core v0.20.10
[INFO] [stderr]    Compiling impl-tools-lib v0.10.0
[INFO] [stderr]    Compiling regex v1.11.0
[INFO] [stderr]    Compiling zstd-sys v2.0.13+zstd.1.5.6
[INFO] [stderr]    Compiling predicates v2.1.5
[INFO] [stderr]    Compiling Inflector v0.11.4
[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-2.0.79/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 -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --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=b149a41184918686 -C extra-filename=-f7fcecba14619ada --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-b087bd98dfdb0cf9.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b8f0a95c2c718365.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-92d18b247a5caeff.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" "c2d575685fc8227c59baf4520ea932aba7f555dcd99793a3b10ea80a67ef27c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2d575685fc8227c59baf4520ea932aba7f555dcd99793a3b10ea80a67ef27c0", kill_on_drop: false }`
[INFO] [stdout] c2d575685fc8227c59baf4520ea932aba7f555dcd99793a3b10ea80a67ef27c0
