[INFO] fetching crate taffy 0.10.1...
[INFO] testing taffy-0.10.1 against beta-2026-04-21 for beta-1.96-1
[INFO] extracting crate taffy 0.10.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate taffy 0.10.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate taffy 0.10.1
[INFO] tweaked toml for crates.io crate taffy 0.10.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate taffy 0.10.1 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 taffy 0.10.1 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] [stderr]     Blocking waiting for file lock on package cache
[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] 9500e99aecdedb8e41a84e849898d27928509b7b86c492dcfd6b0b60f0338f52
[INFO] running `Command { std: "docker" "start" "-a" "9500e99aecdedb8e41a84e849898d27928509b7b86c492dcfd6b0b60f0338f52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9500e99aecdedb8e41a84e849898d27928509b7b86c492dcfd6b0b60f0338f52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9500e99aecdedb8e41a84e849898d27928509b7b86c492dcfd6b0b60f0338f52", kill_on_drop: false }`
[INFO] [stdout] 9500e99aecdedb8e41a84e849898d27928509b7b86c492dcfd6b0b60f0338f52
[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] 870cdb0b32a179b2743b670b1ad0237ea857fb5f100a8b2f63d6a11865653e6b
[INFO] running `Command { std: "docker" "start" "-a" "870cdb0b32a179b2743b670b1ad0237ea857fb5f100a8b2f63d6a11865653e6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling slotmap v1.1.1
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling grid v1.0.0
[INFO] [stderr]    Compiling taffy v0.10.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.60s
[INFO] running `Command { std: "docker" "inspect" "870cdb0b32a179b2743b670b1ad0237ea857fb5f100a8b2f63d6a11865653e6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "870cdb0b32a179b2743b670b1ad0237ea857fb5f100a8b2f63d6a11865653e6b", kill_on_drop: false }`
[INFO] [stdout] 870cdb0b32a179b2743b670b1ad0237ea857fb5f100a8b2f63d6a11865653e6b
[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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 238d5f02cf9dbe955b2a6dcac52617863e9f781a32f69b090e3e0562ba37cbb7
[INFO] running `Command { std: "docker" "start" "-a" "238d5f02cf9dbe955b2a6dcac52617863e9f781a32f69b090e3e0562ba37cbb7", kill_on_drop: false }`
[INFO] [stderr]    Compiling roxmltree v0.21.1
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling taffy v0.10.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `taffy` (example "basic")
[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 basic --edition=2021 examples/basic.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="alloc"' --cfg 'feature="block_layout"' --cfg 'feature="calc"' --cfg 'feature="content_size"' --cfg 'feature="default"' --cfg 'feature="detailed_layout_info"' --cfg 'feature="flexbox"' --cfg 'feature="float_layout"' --cfg 'feature="grid"' --cfg 'feature="std"' --cfg 'feature="taffy_tree"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "block_layout", "calc", "content_size", "debug", "default", "detailed_layout_info", "document-features", "flexbox", "float_layout", "grid", "parse", "parse_faster", "profile", "serde", "std", "strict_provenance", "taffy_tree"))' -C metadata=2ebeadb0d5258c41 -C extra-filename=-900ed3531125203d --out-dir /opt/rustwide/target/debug/examples -L dependency=/opt/rustwide/target/debug/deps --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-fbafb981ecfa5d55.rlib --extern grid=/opt/rustwide/target/debug/deps/libgrid-7336d9c129aecf92.rlib --extern roxmltree=/opt/rustwide/target/debug/deps/libroxmltree-e604b8884fe36791.rlib --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-ca25bbb1430b9cc6.rlib --extern slotmap=/opt/rustwide/target/debug/deps/libslotmap-24d1fbbd59c845c8.rlib --extern taffy=/opt/rustwide/target/debug/deps/libtaffy-10828ecf4833e234.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `taffy` (example "flexbox_gap")
[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 flexbox_gap --edition=2021 examples/flexbox_gap.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="alloc"' --cfg 'feature="block_layout"' --cfg 'feature="calc"' --cfg 'feature="content_size"' --cfg 'feature="default"' --cfg 'feature="detailed_layout_info"' --cfg 'feature="flexbox"' --cfg 'feature="float_layout"' --cfg 'feature="grid"' --cfg 'feature="std"' --cfg 'feature="taffy_tree"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "block_layout", "calc", "content_size", "debug", "default", "detailed_layout_info", "document-features", "flexbox", "float_layout", "grid", "parse", "parse_faster", "profile", "serde", "std", "strict_provenance", "taffy_tree"))' -C metadata=f93d15312c4bb348 -C extra-filename=-d20b0dc2d59b4bab --out-dir /opt/rustwide/target/debug/examples -L dependency=/opt/rustwide/target/debug/deps --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-fbafb981ecfa5d55.rlib --extern grid=/opt/rustwide/target/debug/deps/libgrid-7336d9c129aecf92.rlib --extern roxmltree=/opt/rustwide/target/debug/deps/libroxmltree-e604b8884fe36791.rlib --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-ca25bbb1430b9cc6.rlib --extern slotmap=/opt/rustwide/target/debug/deps/libslotmap-24d1fbbd59c845c8.rlib --extern taffy=/opt/rustwide/target/debug/deps/libtaffy-10828ecf4833e234.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "238d5f02cf9dbe955b2a6dcac52617863e9f781a32f69b090e3e0562ba37cbb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "238d5f02cf9dbe955b2a6dcac52617863e9f781a32f69b090e3e0562ba37cbb7", kill_on_drop: false }`
[INFO] [stdout] 238d5f02cf9dbe955b2a6dcac52617863e9f781a32f69b090e3e0562ba37cbb7