____________________________ test_wcsapi_extension _____________________________
[gw0] linux -- Python 3.6.11 /root/project/.tox/py36-test/bin/python

tmpdir = local('/tmp/pytest-of-root/pytest-0/popen-gw0/test_wcsapi_extension0')

    def test_wcsapi_extension(tmpdir):
        # ...

        code = """
        import sys
        import wcsapi_test
        sys.exit(wcsapi_test.test())
        """
    
        code = code.strip().replace('\n', '; ')
    
        # Import and run the extension
>       subprocess.check_call([sys.executable, '-c', code], env=env)

../../.tox/py36-test/lib/python3.6/site-packages/astropy/wcs/tests/extension/test_extension.py:78: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

popenargs = (['/root/project/.tox/py36-test/bin/python', '-c', 'import sys;     import wcsapi_test;     sys.exit(wcsapi_test.test())'],)
kwargs = {'env': {'CI': 'true', 'HOME': '/root', 'LANG': 'en_US.UTF-8', 'LANGUAGE': 'en_US.UTF-8', ...}}
retcode = 1
cmd = ['/root/project/.tox/py36-test/bin/python', '-c', 'import sys;     import wcsapi_test;     sys.exit(wcsapi_test.test())']

    def check_call(*popenargs, **kwargs):
        # ...
        retcode = call(*popenargs, **kwargs)
        if retcode:
            cmd = kwargs.get("args")
            if cmd is None:
                cmd = popenargs[0]
>           raise CalledProcessError(retcode, cmd)
E           subprocess.CalledProcessError: Command '['/root/project/.tox/py36-test/bin/python', '-c', 'import sys;     import wcsapi_test;     sys.exit(wcsapi_test.test())']' returned non-zero exit status 1.

/opt/python/cp36-cp36m/lib/python3.6/subprocess.py:311: CalledProcessError
----------------------------- Captured stderr call -----------------------------
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ModuleNotFoundError: No module named 'wcsapi_test'