[INFO] fetching crate vibegraph 0.3.28...
[INFO] testing vibegraph-0.3.28 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate vibegraph 0.3.28 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate vibegraph 0.3.28
[INFO] finished tweaking crates.io crate vibegraph 0.3.28
[INFO] tweaked toml for crates.io crate vibegraph 0.3.28 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vibegraph 0.3.28 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 vibegraph 0.3.28 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] fd258144d41342631fa5f5dfe49dd296bb7293045aae7474cc05f3a93f706c00
[INFO] running `Command { std: "docker" "start" "-a" "fd258144d41342631fa5f5dfe49dd296bb7293045aae7474cc05f3a93f706c00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd258144d41342631fa5f5dfe49dd296bb7293045aae7474cc05f3a93f706c00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd258144d41342631fa5f5dfe49dd296bb7293045aae7474cc05f3a93f706c00", kill_on_drop: false }`
[INFO] [stdout] fd258144d41342631fa5f5dfe49dd296bb7293045aae7474cc05f3a93f706c00
[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] c7efc690374c15c01b6777f5f65f3e95d4b0ab67192b5a3b98369c522448d978
[INFO] running `Command { std: "docker" "start" "-a" "c7efc690374c15c01b6777f5f65f3e95d4b0ab67192b5a3b98369c522448d978", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.15
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling const-oid v0.9.6
[INFO] [stderr]    Compiling hashbrown v0.15.2
[INFO] [stderr]    Compiling winnow v0.6.24
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling byte-slice-cast v1.2.2
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling crunchy v0.2.3
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling base16ct v0.2.0
[INFO] [stderr]    Compiling ryu v1.0.18
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling cc v1.2.10
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stderr]    Compiling log v0.4.25
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling socket2 v0.5.8
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling der v0.7.9
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling serde_json v1.0.137
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling ff v0.13.0
[INFO] [stderr]    Compiling iana-time-zone v0.1.61
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling litemap v0.7.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling indexmap v2.7.1
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling writeable v0.5.5
[INFO] [stderr]    Compiling camino v1.1.9
[INFO] [stderr]    Compiling semver v1.0.25
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]    Compiling crypto-bigint v0.5.5
[INFO] [stderr]    Compiling group v0.13.0
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling bitflags v2.8.0
[INFO] [stderr]    Compiling rfc6979 v0.4.0
[INFO] [stderr]    Compiling signature v2.2.0
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling icu_locid_transform_data v1.5.0
[INFO] [stderr]    Compiling uint v0.9.5
[INFO] [stderr]    Compiling icu_properties_data v1.5.0
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.100
[INFO] [stderr]    Compiling rustls v0.21.12
[INFO] [stderr]    Compiling utf16_iter v1.0.5
[INFO] [stderr]    Compiling httparse v1.9.5
[INFO] [stderr]    Compiling icu_normalizer_data v1.5.0
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling write16 v1.0.0
[INFO] [stderr]    Compiling bumpalo v3.16.0
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling tinyvec v1.8.1
[INFO] [stderr]    Compiling inout v0.1.3
[INFO] [stderr]    Compiling const-hex v1.14.0
[INFO] [stderr]    Compiling spki v0.7.3
[INFO] [stderr]    Compiling ring v0.17.8
[INFO] [stderr]    Compiling sec1 v0.7.3
[INFO] [stderr]    Compiling pkcs8 v0.10.2
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling wasm-bindgen v0.2.100
[INFO] [stderr]    Compiling prettyplease v0.2.29
[INFO] [stderr]    Compiling cipher v0.4.4
[INFO] [stderr]    Compiling unicode-bidi v0.3.18
[INFO] [stderr]    Compiling time-core v0.1.2
[INFO] [stderr]    Compiling powerfmt v0.2.0
[INFO] [stderr]    Compiling thiserror v2.0.11
[INFO] [stderr]    Compiling elliptic-curve v0.13.8
[INFO] [stderr]    Compiling num-conv v0.1.0
[INFO] [stderr]    Compiling unicode-properties v0.1.3
[INFO] [stderr]    Compiling time-macros v0.2.19
[INFO] [stderr]    Compiling unicode-normalization v0.1.24
[INFO] [stderr]    Compiling ecdsa v0.16.9
[INFO] [stderr]    Compiling deranged v0.3.11
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling tempfile v3.15.0
[INFO] [stderr]    Compiling stringprep v0.1.5
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling k256 v0.13.4
[INFO] [stderr]    Compiling md-5 v0.10.6
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]    Compiling indenter v0.3.3
[INFO] [stderr]    Compiling webpki-roots v0.25.4
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]    Compiling chrono v0.4.39
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling time v0.3.37
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling rustls-webpki v0.101.7
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling sct v0.7.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.100
[INFO] [stderr]    Compiling bs58 v0.5.1
[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-2.0.96/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=8f74ef6e146eff4a -C extra-filename=-123233483b159aad --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-c305260e94cbc8a0.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-97dd56adafc8fe2c.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-0b76f8d2dee55637.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" "c7efc690374c15c01b6777f5f65f3e95d4b0ab67192b5a3b98369c522448d978", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7efc690374c15c01b6777f5f65f3e95d4b0ab67192b5a3b98369c522448d978", kill_on_drop: false }`
[INFO] [stdout] c7efc690374c15c01b6777f5f65f3e95d4b0ab67192b5a3b98369c522448d978
