[INFO] fetching crate workflow-rs 0.18.0...
[INFO] testing workflow-rs-0.18.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate workflow-rs 0.18.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate workflow-rs 0.18.0
[INFO] finished tweaking crates.io crate workflow-rs 0.18.0
[INFO] tweaked toml for crates.io crate workflow-rs 0.18.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate workflow-rs 0.18.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 300 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[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] 5aa87546ae177e328f013bd3c72b433fb839b278638fc62c92b4660d1bd26c48
[INFO] running `Command { std: "docker" "start" "-a" "5aa87546ae177e328f013bd3c72b433fb839b278638fc62c92b4660d1bd26c48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5aa87546ae177e328f013bd3c72b433fb839b278638fc62c92b4660d1bd26c48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5aa87546ae177e328f013bd3c72b433fb839b278638fc62c92b4660d1bd26c48", kill_on_drop: false }`
[INFO] [stdout] 5aa87546ae177e328f013bd3c72b433fb839b278638fc62c92b4660d1bd26c48
[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] c94db1f2845a86e20c0e2350d411cf2205eef6b2ea69ccd9e8d58762ac0cf121
[INFO] running `Command { std: "docker" "start" "-a" "c94db1f2845a86e20c0e2350d411cf2205eef6b2ea69ccd9e8d58762ac0cf121", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling rustversion v1.0.22
[INFO] [stderr]    Compiling pin-project-lite v0.2.17
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling futures-core v0.3.32
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling futures-io v0.3.32
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.118
[INFO] [stderr]    Compiling parking v2.2.1
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling slab v0.4.12
[INFO] [stderr]    Compiling fastrand v2.4.1
[INFO] [stderr]    Compiling bumpalo v3.20.2
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling camino v1.2.2
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling typenum v1.20.0
[INFO] [stderr]    Compiling itoa v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling futures-lite v2.6.1
[INFO] [stderr]    Compiling winnow v1.0.2
[INFO] [stderr]    Compiling anyhow v1.0.102
[INFO] [stderr]    Compiling powerfmt v0.2.0
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling hashbrown v0.17.0
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling bitflags v2.11.1
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling deranged v0.5.8
[INFO] [stderr]    Compiling async-io v2.6.0
[INFO] [stderr]    Compiling num_threads v0.1.7
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling async-task v4.7.1
[INFO] [stderr]    Compiling wasm-bindgen v0.2.118
[INFO] [stderr]    Compiling vergen v8.3.2
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling futures-sink v0.3.32
[INFO] [stderr]    Compiling value-bag v1.12.0
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling toml_datetime v1.1.1+spec-1.1.0
[INFO] [stderr]    Compiling time-core v0.1.8
[INFO] [stderr]    Compiling indexmap v2.14.0
[INFO] [stderr]    Compiling num-conv v0.2.1
[INFO] [stderr]    Compiling atomic-waker v1.1.2
[INFO] [stderr]    Compiling piper v0.2.5
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling async-channel v2.5.0
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling toml_parser v1.1.2+spec-1.1.0
[INFO] [stderr]    Compiling crypto-common v0.1.7
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling toml_edit v0.25.11+spec-1.1.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[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="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' --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=8aa300c5fd392d21 -C extra-filename=-bf4382fa6086d553 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-af63080cb3c4e46a.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-866706526c1a0fdf.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-499e208ff65c691c.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" "c94db1f2845a86e20c0e2350d411cf2205eef6b2ea69ccd9e8d58762ac0cf121", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c94db1f2845a86e20c0e2350d411cf2205eef6b2ea69ccd9e8d58762ac0cf121", kill_on_drop: false }`
[INFO] [stdout] c94db1f2845a86e20c0e2350d411cf2205eef6b2ea69ccd9e8d58762ac0cf121
