Building for OpenBench...
error: expected a trait, found type
   --> src/core/defs.rs:122:6
    |
122 | impl const From<u8> for Color {
    |      ^^^^^^^^^^^^^^

error: expected a trait, found type
   --> src/core/primitives.rs:210:6
    |
210 | impl const From<u64> for Bitboard {
    |      ^^^^^^^^^^^^^^^

error: could not compile `soul` (lib) due to 2 previous errors
make: *** [Makefile:120: openbench] Error 101