1 2 3Non-recursive mutex. 4second lock call failed ! 5Mutex not locked by calling thread: mutex 0x........, recursion count 0, owner 1. 6 at 0x........: pthread_mutex_unlock (drd_pthread_intercepts.c:?) 7 by 0x........: lock_twice (recursive_mutex.c:?) 8 by 0x........: main (recursive_mutex.c:?) 9mutex 0x........ was first observed at: 10 at 0x........: pthread_mutex_trylock (drd_pthread_intercepts.c:?) 11 by 0x........: lock_twice (recursive_mutex.c:?) 12 by 0x........: main (recursive_mutex.c:?) 13 14 15Done. 16 17ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0) 18