The windows job hadn't even started when build's odin test segfaulted again on its own (run 132), so concurrency wasn't the cause. Add a Debug Segfault step that runs the already-built test binary under gdb to get a backtrace, since this doesn't reproduce locally or in a plain ubuntu:24.04 container with the same Odin build. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>