[INFO] fetching crate autocxx-integration-tests 0.30.0...
[INFO] testing autocxx-integration-tests-0.30.0 against beta-2026-04-21 for beta-1.96-1
[INFO] extracting crate autocxx-integration-tests 0.30.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate autocxx-integration-tests 0.30.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate autocxx-integration-tests 0.30.0
[INFO] tweaked toml for crates.io crate autocxx-integration-tests 0.30.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate autocxx-integration-tests 0.30.0 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] crate crates.io crate autocxx-integration-tests 0.30.0 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] ef90f416601222b73a7cf1c0323ab50f6a8a5aa7f20ca529f7428e45fa30f1fc
[INFO] running `Command { std: "docker" "start" "-a" "ef90f416601222b73a7cf1c0323ab50f6a8a5aa7f20ca529f7428e45fa30f1fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef90f416601222b73a7cf1c0323ab50f6a8a5aa7f20ca529f7428e45fa30f1fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef90f416601222b73a7cf1c0323ab50f6a8a5aa7f20ca529f7428e45fa30f1fc", kill_on_drop: false }`
[INFO] [stdout] ef90f416601222b73a7cf1c0323ab50f6a8a5aa7f20ca529f7428e45fa30f1fc
[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] 90e3492e68606b1bd9758450e8bf7b5ec9bbf06bf9775324410e0f12f1730cb0
[INFO] running `Command { std: "docker" "start" "-a" "90e3492e68606b1bd9758450e8bf7b5ec9bbf06bf9775324410e0f12f1730cb0", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.17
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling shlex v1.3.0
[INFO] [stderr]    Compiling serde v1.0.218
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling either v1.14.0
[INFO] [stderr]    Compiling libc v0.2.170
[INFO] [stderr]    Compiling once_cell v1.20.3
[INFO] [stderr]    Compiling serde_json v1.0.139
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling ryu v1.0.19
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling itoa v1.0.14
[INFO] [stderr]    Compiling rustversion v1.0.19
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.141
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling utf8parse v0.2.2
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling bitflags v2.8.0
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling getrandom v0.3.1
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling cc v1.2.15
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling anstyle-parse v0.2.6
[INFO] [stderr]    Compiling libloading v0.8.6
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.1
[INFO] [stderr]    Compiling log v0.4.26
[INFO] [stderr]    Compiling foldhash v0.1.4
[INFO] [stderr]    Compiling anstyle v1.0.10
[INFO] [stderr]    Compiling colorchoice v1.0.3
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]    Compiling autocxx-bindgen v0.73.0
[INFO] [stderr]    Compiling prettyplease v0.2.29
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling anstyle-query v1.1.2
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling anstream v0.6.18
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling env_filter v0.1.3
[INFO] [stderr]    Compiling rustc-hash v2.1.1
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling autocxx v0.30.0
[INFO] [stderr]    Compiling trybuild v1.0.81
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling env_logger v0.11.6
[INFO] [stderr]    Compiling indoc v1.0.9
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling autocxx-integration-tests v0.30.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rust_info v0.3.3
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling tempfile v3.17.1
[INFO] [stderr]    Compiling link-cplusplus v1.0.9
[INFO] [stderr]    Compiling cxx v1.0.141
[INFO] [stderr]    Compiling cxx-gen v0.7.141
[INFO] [stderr]    Compiling regex_static_impl v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.218
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.141
[INFO] [stderr]    Compiling miette-derive v5.10.0
[INFO] [stderr]    Compiling test-log-macros v0.2.17
[INFO] [stderr]    Compiling test-log v0.2.17
[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-2.0.98/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 -C debuginfo=2 --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-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=39db634c419487db -C extra-filename=-b3d0d30877f26d94 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-bb612cc015ba134a.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-f51cccb967c85d53.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-b0243f51eded7395.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" "90e3492e68606b1bd9758450e8bf7b5ec9bbf06bf9775324410e0f12f1730cb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90e3492e68606b1bd9758450e8bf7b5ec9bbf06bf9775324410e0f12f1730cb0", kill_on_drop: false }`
[INFO] [stdout] 90e3492e68606b1bd9758450e8bf7b5ec9bbf06bf9775324410e0f12f1730cb0