The v2026.9.30 tag build's arm64 publish job was killed linking the inbuxa binary (fat LTO, one codegen unit): cannot allocate memory on the 16 GB ubuntu-24.04-arm runner. index, ghcr, release, binaries and announce were skipped. amd64 got through on the same size of runner. Each publish job now adds a 16 GB swap file before the build; buildx's container has no memory limit of its own, so the linker can use it.