bitflags 2.x does not implement `Debug` automatically anymore.
Docs suggest using `derive`: https://github.com/bitflags/bitflags/blob/395736882672dcfaaf764817af70a9db209f8003/README.md#example

However, the implementation we get via `derive` now prepends the struct name.
This is not the case for the suggested `Display` implementation, which is why my ntfs-shell example now uses `Display` for the file attribute flags.