I didn’t find a thread where anyone already mentioned this, so here we go. Been working on getting my project going on Cloud Build, and I discovered that apparently the log parser just greps for the word “error.” I have a sprite atlas in my project named “error.” The build log contains output from the sprite packer building this atlas; those log entries show up in my build results as errors!
The moral of the story is, avoid naming assets et al “error” if there’s any chance the name of the resource will end up in your build log.