Iris Docs: Build has much less output now #3789
Description
When building the documentation (uses sphinx-build) the typical output includes showing the files that are being read/written and a summary at the end.
Currently on master this output is now not being displayed. Some travis logs for reference:
- Expected output.
- https://travis-ci.org/github/SciTools/iris/jobs/717339844#L1365. Note the [???%] progress update on the generating gallery, reading sources, writing output etc.
- https://travis-ci.org/github/SciTools/iris/jobs/717339844#L1942. Note the summary showing copying files and that the build succeeded
- Current output from master as of today
- https://travis-ci.org/github/SciTools/iris/jobs/718253890#L1381, has no [???%] progress updates and also part of the summary is missing
- https://travis-ci.org/github/SciTools/iris/jobs/718253890#L1702. Note the summary is missing
The change in behaviour seems to be introduced via commit 556e71e
I have built the docs (make html) on master locally and have reproduced this. Additionally it seems that if there are .rst syntax warnings it is no longer displayed.