I just learned that Pants uses a persistent background process, and killing it helped

The daemon uses inotify to know when files have changed. Sometimes the system is slow to notify, or weird FS types mess it up. You can disable it globally if you need to buy setting

pantsd=False

in your

pants.toml

Earlier when I was investigating the issue I 'deleted' an entire subdirectory and Pants would still claim that all the tests inside that directory pass (even though none of the files were there anymore)

Thanks! Would you mind filing a bug report for this? Apparently there is a renaming corner case we haven’t dealt with properly, and that’s no good