execve("./a.out", ["./a.out"], 0x7fff12cd26d0 /* 20 vars */) = 0
arch_prctl(ARCH_SET_FS, 0x7ff53bb3b618) = 0
set_tid_address(0x7ff53bb3bbe8) = 40778
socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0) = 3
brk(NULL) = 0x555556f23000
brk(0x555556f25000) = 0x555556f25000
mmap(0x555556f23000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x555556f23000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff53bb39000
connect(3, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 24) = 0
sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\2\0\0\0\17\0\0\0\t\0\0\0", iov_len=12}, {iov_base="www-data\0", iov_len=9}], msg_iovlen=2, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 21
readv(3, [{iov_base="\2\0\0\0\1\0\0\0\0\0\0", iov_len=11}, {iov_base="\0", iov_len=1024}], 2) = 12
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff53bb38000
close(3) = 0
munmap(0x7ff53bb39000, 4096) = 0
munmap(0x7ff53bb38000, 4096) = 0
ioctl(1, TIOCGWINSZ, {ws_row=59, ws_col=225, ws_xpixel=1575, ws_ypixel=826}) = 0
writev(1, [{iov_base="err=-1, errno=5", iov_len=15}, {iov_base="\n", iov_len=1}], 2err=-1, errno=5
) = 16
exit_group(0) = ?
+++ exited with 0 +++