secure_allocator_test fails on ppc64

2015-12-10T16:24:09.143+0000 I -        [main] going to run suite: SecureAllocator

2015-12-10T16:24:09.143+0000 I -        [main]   going to run test: SecureVector

2015-12-10T16:24:09.144+0000 F -        [main] Failed to mlock: errno:12 Cannot allocate memory

2015-12-10T16:24:09.144+0000 I -        [main] Fatal Assertion 28832

2015-12-10T16:24:09.144+0000 I -        [main]

...

 libc.so.6(gsignal+0x74) [0x3fff854def94]

 libc.so.6(abort+0x2EC) [0x3fff854e189c]

 secure_allocator_test(_ZN5mongo13fassertFailedEi+0xC0) [0x1011e1a0]

 secure_allocator_test(_ZN5mongo24secure_allocator_details8allocateEm+0x198) [0x100c5318]

 secure_allocator_test(_ZNSt6vectorIiN5mongo15SecureAllocatorIiEEE19_M_emplace_back_auxIIiEEEvDpOT_+0x60) [0x100ad690]

 secure_allocator_test(_ZN5mongo39UnitTest__SecureAllocator__SecureVector7_doTestEv+0x111C) [0x100ac2ac]

 secure_allocator_test(_ZN5mongo8unittest4Test3runEv+0x54) [0x101132f4]

 secure_allocator_test(_ZN5mongo8unittest5Suite13runTestObjectINS_39UnitTest__SecureAllocator__SecureVectorEEEvv+0x58) [0x100ad0f8]

 secure_allocator_test(_ZNSt17_Function_handlerIFvvEPS0_E9_M_invokeERKSt9_Any_data+0x2C) [0x100accec]

 secure_allocator_test(_ZN5mongo8unittest5Suite3runERKSsi+0x578) [0x10117348]

 secure_allocator_test(_ZN5mongo8unittest5Suite3runERKSt6vectorISsSaISsEERKSsi+0x6D4) [0x10118cd4]

 secure_allocator_test(main+0x98) [0x100a46e8]

 libc.so.6(+0x23500) [0x3fff854c3500]

 libc.so.6(__libc_start_main+0xB4) [0x3fff854c3734]