Sigh, print the service as well, please: 

~~~~
not ok 142 - getnameinfo_basic_ip4
# Output from process `getnameinfo_basic_ip4`:
# getnameinfo_req, status: 0, Unknown system error
# Assertion failed in ../test/test-getnameinfo.c on line 46: strcmp(service, "http") == 0 || strcmp(service, "80") == 0
~~~~