[INFO] fetching crate zexcavator 0.0.3...
[INFO] testing zexcavator-0.0.3 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate zexcavator 0.0.3 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate zexcavator 0.0.3
[INFO] finished tweaking crates.io crate zexcavator 0.0.3
[INFO] tweaked toml for crates.io crate zexcavator 0.0.3 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zexcavator 0.0.3 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 zexcavator 0.0.3 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 0ae2448a5ac9106aa37e86332862fe12b3132781ec5e4edab8d8a3b9df44ce4d
[INFO] running `Command { std: "docker" "start" "-a" "0ae2448a5ac9106aa37e86332862fe12b3132781ec5e4edab8d8a3b9df44ce4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ae2448a5ac9106aa37e86332862fe12b3132781ec5e4edab8d8a3b9df44ce4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ae2448a5ac9106aa37e86332862fe12b3132781ec5e4edab8d8a3b9df44ce4d", kill_on_drop: false }`
[INFO] [stdout] 0ae2448a5ac9106aa37e86332862fe12b3132781ec5e4edab8d8a3b9df44ce4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 6ffbad48d4221da40adb30e85707ed262a00c831e045a70433a0c6d731190a89
[INFO] running `Command { std: "docker" "start" "-a" "6ffbad48d4221da40adb30e85707ed262a00c831e045a70433a0c6d731190a89", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling const-oid v0.9.6
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling funty v2.0.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling jobserver v0.1.33
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling wyz v0.5.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling constant_time_eq v0.3.1
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling blake2b_simd v1.0.3
[INFO] [stderr]    Compiling nonempty v0.7.0
[INFO] [stderr]    Compiling base64ct v1.7.3
[INFO] [stderr]    Compiling cc v1.2.22
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling memuse v0.2.2
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling bitvec v1.0.1
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling pem-rfc7468 v0.7.0
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stderr]    Compiling rustversion v1.0.20
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling hashbrown v0.15.3
[INFO] [stderr]    Compiling der v0.7.10
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling visibility v0.1.1
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling socket2 v0.5.9
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling inout v0.1.4
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling cipher v0.4.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling signature v2.2.0
[INFO] [stderr]    Compiling strum_macros v0.26.4
[INFO] [stderr]    Compiling curve25519-dalek v4.1.3
[INFO] [stderr]    Compiling winnow v0.7.10
[INFO] [stderr]    Compiling spki v0.7.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling aes v0.8.4
[INFO] [stderr]    Compiling convert_case v0.6.0
[INFO] [stderr]    Compiling curve25519-dalek-derive v0.1.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling derive_more-impl v1.0.0
[INFO] [stderr]    Compiling ff v0.13.1
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling cmake v0.1.54
[INFO] [stderr]    Compiling group v0.13.0
[INFO] [stderr]    Compiling ed25519 v2.2.3
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling merlin v3.0.0
[INFO] [stderr]    Compiling toml_datetime v0.6.9
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling aws-lc-sys v0.29.0
[INFO] [stderr]    Compiling pkcs8 v0.10.2
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling rustls-pki-types v1.12.0
[INFO] [stderr]    Compiling num-bigint-dig v0.8.4
[INFO] [stderr]    Compiling aws-lc-rs v1.13.1
[INFO] [stderr]    Compiling enum-ordinalize v3.1.15
[INFO] [stderr]    Compiling tokio v1.45.0
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling pkcs1 v0.7.5
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling convert_case v0.7.1
[INFO] [stderr]    Compiling derive-deftly-macros v0.14.6
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling strum v0.26.3
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling toml_edit v0.22.26
[INFO] [stderr]    Compiling ed25519-dalek v2.1.1
[INFO] [stderr]    Compiling x25519-dalek v2.0.1
[INFO] [stderr]    Compiling derive_more-impl v2.0.1
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]    Compiling rustls v0.23.27
[INFO] [stderr]    Compiling retry-error v0.6.3
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling universal-hash v0.5.1
[INFO] [stderr]    Compiling rsa v0.9.8
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling poly1305 v0.8.0
[INFO] [stderr]    Compiling darling_core v0.14.4
[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=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=985b686d72827ccc -C extra-filename=-430a512bf2a36ebd --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 --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" "6ffbad48d4221da40adb30e85707ed262a00c831e045a70433a0c6d731190a89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ffbad48d4221da40adb30e85707ed262a00c831e045a70433a0c6d731190a89", kill_on_drop: false }`
[INFO] [stdout] 6ffbad48d4221da40adb30e85707ed262a00c831e045a70433a0c6d731190a89
