[INFO] fetching crate d30 0.2.3...
[INFO] testing d30-0.2.3 against beta-2026-04-21 for beta-1.96-1
[INFO] extracting crate d30 0.2.3 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate d30 0.2.3
[INFO] finished tweaking crates.io crate d30 0.2.3
[INFO] tweaked toml for crates.io crate d30 0.2.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate d30 0.2.3 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 221 packages to latest compatible versions
[INFO] [stderr]       Adding derive_more v0.99.20 (available: v2.1.1)
[INFO] [stderr]       Adding image v0.24.9 (available: v0.25.10)
[INFO] [stderr]       Adding imageproc v0.23.0 (available: v0.26.1)
[INFO] [stderr]       Adding snafu v0.8.9 (available: v0.9.0)
[INFO] [stderr]       Adding toml v0.7.8 (available: v1.1.2+spec-1.1.0)
[INFO] [stderr]       Adding xdg v2.5.2 (available: v3.0.0)
[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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 394d01b7543658648ccd9b77afe20368a49e31115b40308d8826724dae079622
[INFO] running `Command { std: "docker" "start" "-a" "394d01b7543658648ccd9b77afe20368a49e31115b40308d8826724dae079622", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "394d01b7543658648ccd9b77afe20368a49e31115b40308d8826724dae079622", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "394d01b7543658648ccd9b77afe20368a49e31115b40308d8826724dae079622", kill_on_drop: false }`
[INFO] [stdout] 394d01b7543658648ccd9b77afe20368a49e31115b40308d8826724dae079622
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2cd81e5a704318827efa2c2d6a74b7151147cadcfa9d13ade6506590cc0594b4
[INFO] running `Command { std: "docker" "start" "-a" "2cd81e5a704318827efa2c2d6a74b7151147cadcfa9d13ade6506590cc0594b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling simd-adler32 v0.3.9
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling bytemuck v1.25.0
[INFO] [stderr]    Compiling value-bag v1.12.0
[INFO] [stderr]    Compiling futures-lite v2.6.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling async-io v2.6.0
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling piper v0.2.5
[INFO] [stderr]    Compiling rayon v1.12.0
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling matrixmultiply v0.3.10
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling ttf-parser v0.15.2
[INFO] [stderr]    Compiling weezl v0.1.12
[INFO] [stderr]    Compiling event-listener v5.4.1
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling safe_arch v0.7.4
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling regex-automata v0.4.14
[INFO] [stderr]    Compiling fdeflate v0.3.7
[INFO] [stderr]    Compiling zune-inflate v0.2.54
[INFO] [stderr]    Compiling event-listener-strategy v0.5.4
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling ab_glyph_rasterizer v0.1.10
[INFO] [stderr]    Compiling event-listener v2.5.3
[INFO] [stderr]    Compiling async-channel v2.5.0
[INFO] [stderr]    Compiling async-lock v3.4.2
[INFO] [stderr]    Compiling wide v0.7.33
[INFO] [stderr]    Compiling async-executor v1.14.0
[INFO] [stderr]    Compiling lebe v0.5.3
[INFO] [stderr]    Compiling bit_field v0.10.3
[INFO] [stderr]    Compiling flate2 v1.1.9
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling blocking v1.6.2
[INFO] [stderr]    Compiling gif v0.13.3
[INFO] [stderr]    Compiling async-channel v1.9.0
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling qoi v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling png v0.17.16
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling anstream v1.0.0
[INFO] [stderr]    Compiling conv v0.3.3
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling jiff v0.2.24
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling xdg v2.5.2
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling owned_ttf_parser v0.15.2
[INFO] [stderr]    Compiling jpeg-decoder v0.3.2
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling num_cpus v1.17.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling simba v0.7.3
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr]    Compiling signal-hook-registry v1.4.8
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling regex v1.12.3
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling rusttype v0.9.3
[INFO] [stderr]    Compiling rand v0.8.6
[INFO] [stderr]    Compiling libudev v0.3.0
[INFO] [stderr]    Compiling nix v0.26.4
[INFO] [stderr]    Compiling tiff v0.9.1
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling nix v0.19.1
[INFO] [stderr]    Compiling mio v1.2.0
[INFO] [stderr]    Compiling env_filter v1.0.1
[INFO] [stderr]    Compiling socket2 v0.6.3
[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="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --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=6330fe8577d04736 -C extra-filename=-21a9f4525925b5bd --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" "2cd81e5a704318827efa2c2d6a74b7151147cadcfa9d13ade6506590cc0594b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cd81e5a704318827efa2c2d6a74b7151147cadcfa9d13ade6506590cc0594b4", kill_on_drop: false }`
[INFO] [stdout] 2cd81e5a704318827efa2c2d6a74b7151147cadcfa9d13ade6506590cc0594b4