error: More than one starting state defined (indicated with *), remove duplicates.
  --> tests/compile-fail/multiple_starting_state.rs:5:1
   |
5  | / statemachine! {
6  | |     transitions: {
7  | |         //~ More than one starting state defined (indicated with *), remove duplicates.
8  | |         *State1 + Event1 = State2,
9  | |         *State2 + Event2 = State3,
10 | |     }
11 | | }
   | |_^
   |
   = note: this error originates in the macro `statemachine` (in Nightly builds, run with -Z macro-backtrace for more info)