Something funky is going on because I can't reproduce this locally. I did stumble across #10471 though.

I am expecting the Windows job to fail from #10471 but the html-docs failure is surprising.

Warning, treated as error:
 
autodoc: failed to import method '__call__' from module 'keyword'; the following exception was raised:
 
Traceback (most recent call last):
 
  File "/home/circleci/project/.tox/build_docs/lib/python3.7/site-packages/sphinx/util/inspect.py", line 323, in safe_getattr
 
    return getattr(obj, name, *defargs)
 
AttributeError: module 'keyword' has no attribute '__call__'

html-docs failure is not related, see #10473

Thanks! Though it is very puzzling indeed; the whole beauty was to make it unnecessary to set it in tests individually... I think in my local trial, I also didn't have the problem, but now wonder if perhaps I was not running the whole test suite. Will check.

Ah, interesting, the failure I reported in #10471 is not Windows-specific. See https://travis-ci.org/github/astropy/astropy/jobs/696220533 (Python 3.6 with oldest supported version of all dependencies)

So, this is really weird: if I just remove remote_data and do not apply the fix you have here, I do reproduce the test failure, that internet gets accessed with tox -e test. If confirm this if I then do

cd .tox/test
source bin/activate
pytest --pyargs astropy

However, if I next do

pytest --pyargs astropy -P coordinates

I do not get the failure!

Ah, getting somewhere:

pytest --pyargs astropy -P config,coordinates

does lead to failure. Maybe config messes up the configuration?!

Fix in #10474! Now your previous work comes to its full use - see how many remote_data were removed!!!

Thank you very much, @mhvk ! I'll have a look at #10474 after putting out the html-docs fire.