%Warning-FSMMULTI: t/t_fsmmulti_warn_bad.v:29:5: FSM coverage: multiple enum-typed case statements found in the same always block. Only the first candidate will be instrumented.
   29 |     case (state_b)
      |     ^~~~
                   t/t_fsmmulti_warn_bad.v:25:5: ... Location of first supported candidate for 't.state_a'
   25 |     case (state_a)
      |     ^~~~
                   ... For warning description see https://verilator.org/warn/FSMMULTI?v=latest
                   ... Use "/* verilator lint_off FSMMULTI */" and lint_on around source to disable this message.
%Error: Exiting due to