Bad file descriptor
nbytes != -1 (mailbox.cpp:241)

Program received signal SIGABRT, Aborted.
0x00007fff81a21616 in __kill ()
(gdb) bt
#0  0x00007fff81a21616 in __kill ()
#1  0x00007fff81ac1cca in abort ()
#2  0x0000000100706c20 in zmq::mailbox_t::recv (this=<value temporarily unavailable, due to optimizations>, cmd_=<value temporarily unavailable, due to optimizations>, block_=<value temporarily unavailable, due to optimizations>) at mailbox.cpp:244
#3  0x000000010070f37d in zmq::socket_base_t::process_commands (this=0x101a93810, block_=<value temporarily unavailable, due to optimizations>, throttle_=false) at socket_base.cpp:676
#4  0x000000010070f7d4 in zmq::socket_base_t::getsockopt (this=0x101a93810, option_=<value temporarily unavailable, due to optimizations>, optval_=0x101a894a0, optvallen_=0x101a8a180) at socket_base.cpp:269
#5  0x000000010059837c in ffi_call_unix64 ()
#6  0x00007fff5fbfd530 in ?? ()
(gdb)