I noticed the same issue (I’m also on Tumbleweed). I looked at the log on OBS but I couldn’t figure out what is causing the build to fail. The latest version that built successfully on Tumbleweed has an annoying bug with the area picker that made dt unusable for me, so I just downgraded to the stable version.
Same! In the end, I’ve downgraded to the stable and call it a day.