[INFO] fetching crate polkaguard 0.5.2...
[INFO] testing polkaguard-0.5.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate polkaguard 0.5.2 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate polkaguard 0.5.2
[INFO] finished tweaking crates.io crate polkaguard 0.5.2
[INFO] tweaked toml for crates.io crate polkaguard 0.5.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate polkaguard 0.5.2 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 polkaguard 0.5.2 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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c075054e237647446611a251f42af41a08caaa298b90079d0bc84107f42f580
[INFO] running `Command { std: "docker" "start" "-a" "6c075054e237647446611a251f42af41a08caaa298b90079d0bc84107f42f580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c075054e237647446611a251f42af41a08caaa298b90079d0bc84107f42f580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c075054e237647446611a251f42af41a08caaa298b90079d0bc84107f42f580", kill_on_drop: false }`
[INFO] [stdout] 6c075054e237647446611a251f42af41a08caaa298b90079d0bc84107f42f580
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bfd37b25526b26a64fbabffe8bf4b0be3b5d37b93c8035ab50d108180393e1c5
[INFO] running `Command { std: "docker" "start" "-a" "bfd37b25526b26a64fbabffe8bf4b0be3b5d37b93c8035ab50d108180393e1c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]    Compiling hashbrown v0.15.4
[INFO] [stderr]    Compiling rustversion v1.0.21
[INFO] [stderr]    Compiling toml_write v0.1.2
[INFO] [stderr]    Compiling winnow v0.7.11
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling crunchy v0.2.3
[INFO] [stderr]    Compiling cc v1.2.27
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling byte-slice-cast v1.2.3
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling base16ct v0.2.0
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling tracing-core v0.1.34
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parity-scale-codec v3.7.5
[INFO] [stderr]    Compiling signal-hook-registry v1.4.5
[INFO] [stderr]    Compiling camino v1.1.10
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling ff v0.13.1
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling group v0.13.0
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling syn v2.0.103
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling socket2 v0.5.10
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.34
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling rustix v1.0.7
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling pkg-config v0.3.32
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling litemap v0.8.0
[INFO] [stderr]    Compiling writeable v0.6.1
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling linux-raw-sys v0.9.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling const_format v0.2.34
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling uint v0.9.5
[INFO] [stderr]    Compiling icu_properties_data v2.0.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling openssl-sys v0.9.109
[INFO] [stderr]    Compiling untrusted v0.9.0
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling icu_normalizer_data v2.0.0
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.100
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling rustls v0.21.12
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling walkdir v2.5.0
[INFO] [stderr]    Compiling fixed-hash v0.8.0
[INFO] [stderr]    Compiling der v0.7.10
[INFO] [stderr]    Compiling openssl v0.10.73
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling bumpalo v3.18.1
[INFO] [stderr]    Compiling siphasher v1.0.1
[INFO] [stderr]    Compiling iana-time-zone v0.1.63
[INFO] [stderr]    Compiling const-hex v1.14.1
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]    Compiling utf8_iter v1.0.4
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling crypto-bigint v0.5.5
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling wasm-bindgen v0.2.100
[INFO] [stderr]    Compiling sec1 v0.7.3
[INFO] [stderr]    Compiling tempfile v3.20.0
[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=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-1.0.109/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="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --cfg 'feature="visit"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "quote", "test", "visit", "visit-mut"))' -C metadata=53e80b0519fc5976 -C extra-filename=-ba4321c4f8e24269 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-588db297ca64f25d.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-0c9d28997251509a.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-d523eb951b71da4e.rmeta --cap-lints allow --cap-lints=warn --cfg syn_disable_nightly_tests` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "bfd37b25526b26a64fbabffe8bf4b0be3b5d37b93c8035ab50d108180393e1c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfd37b25526b26a64fbabffe8bf4b0be3b5d37b93c8035ab50d108180393e1c5", kill_on_drop: false }`
[INFO] [stdout] bfd37b25526b26a64fbabffe8bf4b0be3b5d37b93c8035ab50d108180393e1c5
