First Layout: ./gds/caravel_00010004.gds
Second Layout: ./gds/caravel_00010004_b.gds
Design Name: caravel_00010004
Output GDS will be: ./gds/caravel_00010004_fix_xor.gds
Reading ./gds/caravel_00010004.gds ..
Reading ./gds/caravel_00010004_b.gds ..
ERROR: In /mnt/share/open_mpw/sak/klayout/xor.drc: Unable to open file: ./gds/caravel_00010004_b.gds (errno=2) in Layout::read
ERROR: Unable to open file: ./gds/caravel_00010004_b.gds (errno=2) in Layout::read in MacroInterpreter::execute
  /mnt/share/open_mpw/sak/klayout/xor.drc:18:in `execute_drc'
  :/built-in-macros/drc_interpreters.lym:92:in `execute'