`hwdb.bin` is a generated file. I did check it in Ubuntu 20.04, `/lib/udev/hwdb.bin` and `/usr/lib/udev/hwdb.bin` are identical copy, so no need to be merged.
A quick fix would be deleting one of them:
```sudo rm /lib/udev/hwdb.bin```
Then fix apt using: `sudo apt install -f`
usrmerge should probably make same action.
`hwdb.bin` is a generated file. I did check it in Ubuntu 20.04, `/lib/udev/ hwdb.bin` and `/usr/lib/ udev/hwdb. bin` are identical copy, so no need to be merged.
A quick fix would be deleting one of them:
```sudo rm /lib/udev/ hwdb.bin` ``
Then fix apt using: `sudo apt install -f`
usrmerge should probably make same action.