. Thread 3 (Thread 15465): #0 0x00007f9382186203 in ?? () No symbol table info available. Cannot access memory at address 0x7f936ac6cc30 . Thread 2 (Thread 15458): #0 0x00007f9382186203 in ?? () No symbol table info available. Cannot access memory at address 0x7f937783ad20 . Thread 1 (Thread 15457): #0 0x0000000000000000 in ?? () No symbol table info available. Cannot access memory at address 0x7fff4c03e628