The following output:
[20.122s][info][monitorinflation] 0x0000600003fb4010 100 0x0000080000200908 java.lang.ref.NativeReferenceQueue$Lock (is_busy: waiters=1, contentions=0owner=0x0000000000000000, cxq=0x0000000000000000, EntryList=0x0000000000000000)

lacks a ', ' after the the contention field output. There's also a similar problem when owner is not null.