 --> [ local path prefix ]/state_machine/signal_uses/duplicate_nested.fpp:8:10
  |
8 |       on s enter T
  |          ^ duplicate use of signal s in state T
  |
 ::: [ local path prefix ]/state_machine/signal_uses/duplicate_nested.fpp:7:10
  |
7 |       on s enter T
  |          - previous use is here

