[INFO] fetching crate op-stages 0.1.0...
[INFO] testing op-stages-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate op-stages 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate op-stages 0.1.0
[INFO] finished tweaking crates.io crate op-stages 0.1.0
[INFO] tweaked toml for crates.io crate op-stages 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate op-stages 0.1.0 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 345 packages to latest compatible versions
[INFO] [stderr]       Adding crypto-common v0.1.6 (available: v0.1.7)
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] cfbba8aa9342849ec62dbeff2b1a70ca12486291c392fbff4b238fffe5d233f8
[INFO] running `Command { std: "docker" "start" "-a" "cfbba8aa9342849ec62dbeff2b1a70ca12486291c392fbff4b238fffe5d233f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cfbba8aa9342849ec62dbeff2b1a70ca12486291c392fbff4b238fffe5d233f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfbba8aa9342849ec62dbeff2b1a70ca12486291c392fbff4b238fffe5d233f8", kill_on_drop: false }`
[INFO] [stdout] cfbba8aa9342849ec62dbeff2b1a70ca12486291c392fbff4b238fffe5d233f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 2247e5b05276c46ef291592eb31403bcead319b7bd27dfc1f476759329c202c1
[INFO] running `Command { std: "docker" "start" "-a" "2247e5b05276c46ef291592eb31403bcead319b7bd27dfc1f476759329c202c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling hashbrown v0.17.0
[INFO] [stderr]    Compiling zeroize v1.8.2
[INFO] [stderr]    Compiling winnow v1.0.2
[INFO] [stderr]    Compiling typenum v1.20.0
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling toml_datetime v1.1.1+spec-1.1.0
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling const-oid v0.9.6
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling konst_macro_rules v0.2.19
[INFO] [stderr]    Compiling itoa v1.0.18
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.34
[INFO] [stderr]    Compiling parity-scale-codec v3.7.5
[INFO] [stderr]    Compiling crunchy v0.2.4
[INFO] [stderr]    Compiling konst v0.2.20
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.17
[INFO] [stderr]    Compiling rustc-hex v2.1.0
[INFO] [stderr]    Compiling byte-slice-cast v1.2.3
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling indexmap v2.14.0
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling zmij v1.0.21
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling tracing-core v0.1.36
[INFO] [stderr]    Compiling generic-array v0.14.9
[INFO] [stderr]    Compiling der v0.7.10
[INFO] [stderr]    Compiling regex-syntax v0.8.10
[INFO] [stderr]    Compiling bitflags v2.11.1
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling writeable v0.6.3
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling const_format v0.2.36
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling litemap v0.8.2
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling ff v0.13.1
[INFO] [stderr]    Compiling toml_parser v1.1.2+spec-1.1.0
[INFO] [stderr]    Compiling uint v0.9.5
[INFO] [stderr]    Compiling base16ct v0.2.0
[INFO] [stderr]    Compiling icu_properties_data v2.2.0
[INFO] [stderr]    Compiling signal-hook v0.3.18
[INFO] [stderr]    Compiling icu_normalizer_data v2.2.0
[INFO] [stderr]    Compiling group v0.13.0
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling crypto-bigint v0.5.5
[INFO] [stderr]    Compiling mio v1.2.0
[INFO] [stderr]    Compiling socket2 v0.6.3
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]    Compiling rfc6979 v0.4.0
[INFO] [stderr]    Compiling signature v2.2.0
[INFO] [stderr]    Compiling sec1 v0.7.3
[INFO] [stderr]    Compiling toml_edit v0.25.11+spec-1.1.0
[INFO] [stderr]    Compiling spki v0.7.3
[INFO] [stderr]    Compiling mio v0.8.11
[INFO] [stderr]    Compiling slab v0.4.12
[INFO] [stderr]    Compiling bytes v1.11.1
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]    Compiling sha3 v0.10.9
[INFO] [stderr]    Compiling signal-hook-mio v0.2.5
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling percent-encoding v2.3.2
[INFO] [stderr]    Compiling fastrand v2.4.1
[INFO] [stderr]    Compiling typeid v1.0.3
[INFO] [stderr]    Compiling proc-macro-crate v3.5.0
[INFO] [stderr]    Compiling either_n v0.2.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling string-cases v0.2.0
[INFO] [stderr]    Compiling indenter v0.3.4
[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]    Compiling unicode-segmentation v1.13.2
[INFO] [stderr]    Compiling crossterm v0.25.0
[INFO] [stderr]    Compiling tempfile v3.27.0
[INFO] [stderr]    Compiling form_urlencoded v1.2.2
[INFO] [stderr]    Compiling chrono v0.4.44
[INFO] [stderr]    Compiling const-hex v1.18.1
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling socket2 v0.5.10
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling uncased v0.9.10
[INFO] [stderr]    Compiling winnow v0.7.15
[INFO] [stderr]    Compiling newline-converter v0.2.2
[INFO] [stderr]    Compiling serde_json v1.0.149
[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-2.0.117/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=f50fd23ee619c33a -C extra-filename=-db35dfc171bce774 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-0fa97b1aa44f5fda.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-544fd508281ca8af.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-423507c85e36a25a.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" "2247e5b05276c46ef291592eb31403bcead319b7bd27dfc1f476759329c202c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2247e5b05276c46ef291592eb31403bcead319b7bd27dfc1f476759329c202c1", kill_on_drop: false }`
[INFO] [stdout] 2247e5b05276c46ef291592eb31403bcead319b7bd27dfc1f476759329c202c1
