Do not print Without this patch, we're getting: . File "/<<PKGBUILDDIR>>/ironic/tests/unit/api/base.py", line 115, in _request_json print(method.upper(), full_path, "WITH", params, "GOT", str(response)) BlockingIOError: [Errno 11] write could not complete without blocking . about 60 times (not always the same number of times...).