warning: tabstop
  --> foo.proto:6:9
   |
 6 |         field
   | --------^^^^^ this is in front of some tabstops
   |  |
   |  specifically these

warning: partial tabstop
  --> foo.proto:7:2
   |
 7 |     field
   | -^^^ tabstop
   | |
   | spaces

encountered 2 warnings