[INFO] fetching crate stylo_taffy 0.3.0-alpha.2...
[INFO] testing stylo_taffy-0.3.0-alpha.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate stylo_taffy 0.3.0-alpha.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate stylo_taffy 0.3.0-alpha.2
[INFO] finished tweaking crates.io crate stylo_taffy 0.3.0-alpha.2
[INFO] tweaked toml for crates.io crate stylo_taffy 0.3.0-alpha.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stylo_taffy 0.3.0-alpha.2 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 stylo_taffy 0.3.0-alpha.2 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 60575bb170de8e5cb48148dc9237c6ee536b05a538edbd4befb91bd735453606
[INFO] running `Command { std: "docker" "start" "-a" "60575bb170de8e5cb48148dc9237c6ee536b05a538edbd4befb91bd735453606", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60575bb170de8e5cb48148dc9237c6ee536b05a538edbd4befb91bd735453606", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60575bb170de8e5cb48148dc9237c6ee536b05a538edbd4befb91bd735453606", kill_on_drop: false }`
[INFO] [stdout] 60575bb170de8e5cb48148dc9237c6ee536b05a538edbd4befb91bd735453606
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] fbb5f5344c20a79c8ba8f538213d6ad5b2c6c84bb35751a63393901ab0a67896
[INFO] running `Command { std: "docker" "start" "-a" "fbb5f5344c20a79c8ba8f538213d6ad5b2c6c84bb35751a63393901ab0a67896", kill_on_drop: false }`
[INFO] [stderr]    Compiling fastrand v2.4.1
[INFO] [stderr]    Compiling stable_deref_trait v1.2.1
[INFO] [stderr]    Compiling phf_shared v0.13.1
[INFO] [stderr]    Compiling writeable v0.6.3
[INFO] [stderr]    Compiling dtoa-short v0.3.5
[INFO] [stderr]    Compiling smallbitvec v2.6.0
[INFO] [stderr]    Compiling thin-vec v0.2.16
[INFO] [stderr]    Compiling bitflags v2.11.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling icu_locale_data v2.2.0
[INFO] [stderr]    Compiling rustc-hash v2.1.2
[INFO] [stderr]    Compiling litemap v0.8.2
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling idna_adapter v1.0.0
[INFO] [stderr]    Compiling icu_segmenter_data v2.2.0
[INFO] [stderr]    Compiling idna v1.1.0
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling core_maths v0.1.1
[INFO] [stderr]    Compiling rayon v1.12.0
[INFO] [stderr]    Compiling itertools v0.14.0
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling uluru v3.1.0
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num_cpus v1.17.0
[INFO] [stderr]    Compiling strum v0.28.0
[INFO] [stderr]    Compiling grid v1.0.1
[INFO] [stderr]    Compiling atomic_refcell v0.1.14
[INFO] [stderr]    Compiling stylo_static_prefs v0.16.0
[INFO] [stderr]    Compiling phf_generator v0.13.1
[INFO] [stderr]    Compiling phf_codegen v0.13.1
[INFO] [stderr]    Compiling string_cache_codegen v0.6.1
[INFO] [stderr]    Compiling stylo v0.16.0
[INFO] [stderr]    Compiling taffy v0.10.1
[INFO] [stderr]    Compiling selectors v0.37.0
[INFO] [stderr]    Compiling stylo_atoms v0.16.0
[INFO] [stderr]    Compiling web_atoms v0.2.4
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling zerofrom-derive v0.1.7
[INFO] [stderr]    Compiling yoke-derive v0.8.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.3
[INFO] [stderr]    Compiling phf_macros v0.13.1
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling cssparser-macros v0.6.1
[INFO] [stderr]    Compiling derive_more-impl v2.1.1
[INFO] [stderr]    Compiling malloc_size_of_derive v0.1.3
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]    Compiling strum_macros v0.28.0
[INFO] [stderr]    Compiling phf v0.13.1
[INFO] [stderr]    Compiling zerotrie v0.2.4
[INFO] [stderr]    Compiling zerofrom v0.1.7
[INFO] [stderr]    Compiling yoke v0.8.2
[INFO] [stderr]    Compiling derive_more v2.1.1
[INFO] [stderr]    Compiling zerovec v0.11.6
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling to_shmem_derive v0.1.0
[INFO] [stderr]    Compiling stylo_derive v0.16.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling tinystr v0.8.3
[INFO] [stderr]    Compiling potential_utf v0.1.5
[INFO] [stderr]    Compiling icu_collections v2.2.0
[INFO] [stderr]    Compiling string_cache v0.9.0
[INFO] [stderr]    Compiling cssparser v0.36.0
[INFO] [stderr]    Compiling servo_arc v0.4.3
[INFO] [stderr]    Compiling euclid v0.22.14
[INFO] [stderr]    Compiling app_units v0.7.8
[INFO] [stderr]    Compiling url v2.5.8
[INFO] [stderr]    Compiling icu_locale_core v2.2.0
[INFO] [stderr]    Compiling to_shmem v0.3.0
[INFO] [stderr]    Compiling icu_provider v2.2.0
[INFO] [stderr]    Compiling icu_locale v2.2.0
[INFO] [stderr]    Compiling stylo_malloc_size_of v0.16.0
[INFO] [stderr]    Compiling stylo_dom v0.16.0
[INFO] [stderr]    Compiling stylo_traits v0.16.0
[INFO] [stderr]    Compiling icu_segmenter v2.2.0
[INFO] [stderr] error: could not compile `stylo` (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 style --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/stylo-0.16.0/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="default"' --cfg 'feature="encoding_rs"' --cfg 'feature="mime"' --cfg 'feature="serde"' --cfg 'feature="servo"' --cfg 'feature="string_cache"' --cfg 'feature="stylo_atoms"' --cfg 'feature="url"' --cfg 'feature="web_atoms"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("bindgen", "default", "encoding_rs", "gecko", "gecko_debug", "gecko_refcount_logging", "mime", "mozbuild", "nsstring", "regex", "serde", "servo", "string_cache", "stylo_atoms", "toml", "url", "web_atoms"))' -C metadata=23b6bae323ff258c -C extra-filename=-e0043d381f39680e --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern app_units=/opt/rustwide/target/debug/deps/libapp_units-91392af98a090650.rmeta --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-ff2a04082732a9b8.rmeta --extern atomic_refcell=/opt/rustwide/target/debug/deps/libatomic_refcell-c2783ddc0eee89cf.rmeta --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-9fb7a6088bc9261e.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-0d5229b4099d70a3.rmeta --extern cssparser=/opt/rustwide/target/debug/deps/libcssparser-78b9059d2cedfcea.rmeta --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-9fb3786f75b2a21e.rmeta --extern encoding_rs=/opt/rustwide/target/debug/deps/libencoding_rs-8656bb43f7a59443.rmeta --extern euclid=/opt/rustwide/target/debug/deps/libeuclid-eacf81e4a8acb212.rmeta --extern icu_segmenter=/opt/rustwide/target/debug/deps/libicu_segmenter-79745506191800ae.rmeta --extern indexmap=/opt/rustwide/target/debug/deps/libindexmap-929dd02fad068ac3.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-8fb39d0561fb291b.rmeta --extern itoa=/opt/rustwide/target/debug/deps/libitoa-c3f3678fd0b86a79.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-b4877c6cda7d43ee.rmeta --extern malloc_size_of_derive=/opt/rustwide/target/debug/deps/libmalloc_size_of_derive-7a223f4e746473ca.so --extern mime=/opt/rustwide/target/debug/deps/libmime-aa776e7d0d3a99c3.rmeta --extern debug_unreachable=/opt/rustwide/target/debug/deps/libdebug_unreachable-bd060a78c3a566c1.rmeta --extern num_derive=/opt/rustwide/target/debug/deps/libnum_derive-61e987ca40474bd3.so --extern num_integer=/opt/rustwide/target/debug/deps/libnum_integer-66da74d82cc9ec13.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-13e0c6dd117d8ba0.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-3f9cb8bd3e13fb60.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-0d954a184e7c1ddc.rmeta --extern precomputed_hash=/opt/rustwide/target/debug/deps/libprecomputed_hash-c267fe7f0c895484.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-75c1444cb4b18189.rmeta --extern rayon_core=/opt/rustwide/target/debug/deps/librayon_core-50241ec5d763501f.rmeta --extern rustc_hash=/opt/rustwide/target/debug/deps/librustc_hash-a6118d07d5ba6cd8.rmeta --extern selectors=/opt/rustwide/target/debug/deps/libselectors-06c5cff615dafcc6.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-705f33d8a63b2a28.rmeta --extern servo_arc=/opt/rustwide/target/debug/deps/libservo_arc-3a2ede8fc76cbd45.rmeta --extern smallbitvec=/opt/rustwide/target/debug/deps/libsmallbitvec-82a751b9e0761e44.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-5f00e50d451cf970.rmeta --extern static_assertions=/opt/rustwide/target/debug/deps/libstatic_assertions-95336585f0b7f57d.rmeta --extern string_cache=/opt/rustwide/target/debug/deps/libstring_cache-1da72f95dad9671f.rmeta --extern strum=/opt/rustwide/target/debug/deps/libstrum-4b1cd388475dce1e.rmeta --extern strum_macros=/opt/rustwide/target/debug/deps/libstrum_macros-2aac9b78f1667ce0.so --extern stylo_atoms=/opt/rustwide/target/debug/deps/libstylo_atoms-a3c4781dd0e32740.rmeta --extern style_derive=/opt/rustwide/target/debug/deps/libstylo_derive-4aa5d528c23be12f.so --extern dom=/opt/rustwide/target/debug/deps/libstylo_dom-00bf3e6d82aa8963.rmeta --extern malloc_size_of=/opt/rustwide/target/debug/deps/libstylo_malloc_size_of-3b380b8e76a5fba1.rmeta --extern static_prefs=/opt/rustwide/target/debug/deps/libstylo_static_prefs-cf9de0b18d650263.rmeta --extern style_traits=/opt/rustwide/target/debug/deps/libstyle_traits-0435a81f1a3d266e.rmeta --extern thin_vec=/opt/rustwide/target/debug/deps/libthin_vec-a43463331f1bd632.rmeta --extern to_shmem=/opt/rustwide/target/debug/deps/libto_shmem-f95cfcec401d54d8.rmeta --extern to_shmem_derive=/opt/rustwide/target/debug/deps/libto_shmem_derive-6d811650777ed662.so --extern uluru=/opt/rustwide/target/debug/deps/libuluru-b0891ad4c261a5b6.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-2e057506556cbfa1.rmeta --extern void=/opt/rustwide/target/debug/deps/libvoid-d8e39f7b0095244c.rmeta --extern web_atoms=/opt/rustwide/target/debug/deps/libweb_atoms-3b391dfec8ea705a.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "fbb5f5344c20a79c8ba8f538213d6ad5b2c6c84bb35751a63393901ab0a67896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbb5f5344c20a79c8ba8f538213d6ad5b2c6c84bb35751a63393901ab0a67896", kill_on_drop: false }`
[INFO] [stdout] fbb5f5344c20a79c8ba8f538213d6ad5b2c6c84bb35751a63393901ab0a67896
