WALLY-COV-Zcd-c.fsd causing trap loop on rv32gc

I haven't investigated the root cause, but WALLY-COV-Zcd-c.fsd.elf is causing a trap on rv32gc:

# ** Error: Program fetched illegal instruction 0x00000000 from address 0x00000000 twice in a row.  Usually due to fault with no fault handler.