error: proc macro panicked
 --> tests/compile_failures/too_many_args_splitbits.rs:4:5
  |
4 |     splitbits!(min=u8, 0b11011101, "aaabbccc", whatisthisthing);
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = help: message: splitbits must take at most three arguments: a min type, then an input value, then a template. Found:
          `min=u8, 0b11011101, "aaabbccc", whatisthisthing`