Adding changelog entry.

4 jobs for master in 9 minutes and 54 seconds (queued for 5 seconds)
latest
Status Job ID Name Coverage
  Test
failed #257559
conda_tests

00:04:49

failed #257560
docs_test

00:06:19

passed #257557
python_3_oldlibs_tests

00:07:19

passed #257558
python_3_tests

00:09:49

 
Name Stage Failure
failed
docs_test Test

Exception occurred:
File "/usr/local/lib/python3.7/site-packages/docutils/parsers/rst/states.py", line 882, in interpreted
nodes[0][0].rawsource = unescape(text, True)
AttributeError: 'str' object has no attribute 'rawsource'
The full traceback has been saved in /tmp/sphinx-err-kjw1y8lf.log, if you want to report the issue to the developers.
Please also report this if it was a user error, so that a better error message can be provided next time.
A bug report can be filed in the tracker at <https://github.com/sphinx-doc/sphinx/issues>. Thanks!
ERROR: Job failed: exit code 1
failed
conda_tests Test
Setting up libgl1-mesa-dri:amd64 (18.3.6-2) ...
Setting up libglx-mesa0:amd64 (18.3.6-2) ...
Setting up libglx0:amd64 (1.1.0-1) ...
Setting up libgl1:amd64 (1.1.0-1) ...
Setting up libgl1-mesa-glx:amd64 (18.3.6-2) ...
Processing triggers for libc-bin (2.28-10) ...
$ conda install -yq pip wheel numpy scipy matplotlib flask
/bin/bash: line 91: conda: command not found
ERROR: Job failed: exit code 1