NODE: SV = IV(0x7fcc7b8041b8) at 0x7fcc7b8041c8
  REFCNT = 1
  FLAGS = (PADMY,ROK)
  RV = 0x7fcc79803e98
  SV = PVMG(0x7fcc790023b0) at 0x7fcc79803e98
    REFCNT = 1
    FLAGS = (OBJECT,IOK,READONLY,pIOK)
    IV = 140516178002128
    NV = 0
    PV = 0
    STASH = 0x7fcc7a004e70      "Node"
---
PARENT: SV = IV(0x7fcc7a008838) at 0x7fcc7a008848
  REFCNT = 1
  FLAGS = (PADMY,ROK)
  RV = 0x7fcc79803ce8
  SV = PVMG(0x7fcc79002770) at 0x7fcc79803ce8
    REFCNT = 1
    FLAGS = (OBJECT,IOK,READONLY,pIOK)
    IV = 140516178002208
    NV = 0
    PV = 0
    STASH = 0x7fcc7a004e70      "Node"
---
FROM FIELD: SV = UNKNOWN(0xff) (0x7fcc7a004630) at 0x7fcc79803fd0
  REFCNT = 0
  FLAGS = (TEMP)
Attempt to free unreferenced scalar: SV 0x7fcc79803fd0, Perl interpreter: 0x7fcc79800000 at ref.pl line 72.
---
destroying Node=SCALAR(0x7ff391803ce8) at ref.pl line 51.
destroying Node=SCALAR(0x7ff391803e98) at ref.pl line 51.