I've put together a testcase [here](https://github.com/hdonnay/sqlite-vfs), where half the tests fail but I don't think they should. I've also run into a similar error where the vfs system fails on the `Ping()` for [no clear reason](https://github.com/quay/claircore/actions/runs/3338478773/jobs/5526190180#step:6:120) where the database is not in the root directory of a custom fs.FS implementation: ``` unable to open database file: out of memory (14) ```