[INFO] fetching crate provekit_nargo 1.0.0-beta.11-alpha.4...
[INFO] testing provekit_nargo-1.0.0-beta.11-alpha.4 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate provekit_nargo 1.0.0-beta.11-alpha.4 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate provekit_nargo 1.0.0-beta.11-alpha.4
[INFO] finished tweaking crates.io crate provekit_nargo 1.0.0-beta.11-alpha.4
[INFO] tweaked toml for crates.io crate provekit_nargo 1.0.0-beta.11-alpha.4 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate provekit_nargo 1.0.0-beta.11-alpha.4 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 provekit_nargo 1.0.0-beta.11-alpha.4 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-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] 22a118c36acd43ef11ef30c7224b98e912561056c7200ce15472b66c8eee848e
[INFO] running `Command { std: "docker" "start" "-a" "22a118c36acd43ef11ef30c7224b98e912561056c7200ce15472b66c8eee848e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22a118c36acd43ef11ef30c7224b98e912561056c7200ce15472b66c8eee848e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22a118c36acd43ef11ef30c7224b98e912561056c7200ce15472b66c8eee848e", kill_on_drop: false }`
[INFO] [stdout] 22a118c36acd43ef11ef30c7224b98e912561056c7200ce15472b66c8eee848e
[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] 2c38d2ba2433a5c919a00f34ae04eefad0fbc414ca028ea50e61191cee9419ac
[INFO] running `Command { std: "docker" "start" "-a" "2c38d2ba2433a5c919a00f34ae04eefad0fbc414ca028ea50e61191cee9419ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling hashbrown v0.15.4
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling anyhow v1.0.98
[INFO] [stderr]    Compiling syn v2.0.102
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling rustix v1.0.7
[INFO] [stderr]    Compiling linux-raw-sys v0.9.4
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling fixedbitset v0.5.7
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling prettyplease v0.2.33
[INFO] [stderr]    Compiling owo-colors v4.2.2
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling indexmap v2.10.0
[INFO] [stderr]    Compiling tracing-subscriber v0.3.19
[INFO] [stderr]    Compiling winnow v0.7.11
[INFO] [stderr]    Compiling gimli v0.31.1
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling petgraph v0.7.1
[INFO] [stderr]    Compiling ff v0.13.1
[INFO] [stderr]    Compiling protoc-bin-vendored-linux-aarch_64 v3.1.0
[INFO] [stderr]    Compiling protoc-bin-vendored-linux-ppcle_64 v3.1.0
[INFO] [stderr]    Compiling group v0.13.0
[INFO] [stderr]    Compiling protoc-bin-vendored-macos-x86_64 v3.1.0
[INFO] [stderr]    Compiling protoc-bin-vendored-macos-aarch_64 v3.1.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling protoc-bin-vendored-win32 v3.1.0
[INFO] [stderr]    Compiling indenter v0.3.3
[INFO] [stderr]    Compiling protoc-bin-vendored-linux-x86_32 v3.1.0
[INFO] [stderr]    Compiling multimap v0.10.1
[INFO] [stderr]    Compiling protoc-bin-vendored-linux-x86_64 v3.1.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.25
[INFO] [stderr]    Compiling regex-automata v0.4.9
[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-2.0.102/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="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=253b96234a7a0430 -C extra-filename=-60ad4bbc21b384ff --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` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2c38d2ba2433a5c919a00f34ae04eefad0fbc414ca028ea50e61191cee9419ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c38d2ba2433a5c919a00f34ae04eefad0fbc414ca028ea50e61191cee9419ac", kill_on_drop: false }`
[INFO] [stdout] 2c38d2ba2433a5c919a00f34ae04eefad0fbc414ca028ea50e61191cee9419ac
