Finding the warnings when a deploy gets a `Warnings encountered` striped banner can be very hard

[rtyley]

Several recent deploys of Frontend have unpredictably shown the Warnings encountered striped banner (originally introduced with #435 & #437):

https://riffraff.gutools.co.uk/deployment/history?projectName=dotcom:frontend-all&stage=CODE

However, looking at the deploy page, *no further details of what the warnings are is easily visible - the deploy pages themselves seem clean:

• https://riffraff.gutools.co.uk/deployment/view/1b37d1cd-17b9-4cbc-b908-5160f174bd94
• https://riffraff.gutools.co.uk/deployment/view/d260f4dd-13a6-4b3d-b410-ae58640fb61f
• https://riffraff.gutools.co.uk/deployment/view/92bfeb70-5b37-4404-81dd-96ed38b138cc
• https://riffraff.gutools.co.uk/deployment/view/7c46bffe-7efb-4d53-900e-194c06407f78

Workaround

The warnings do exist- but they're very hidden. @adamnfish explains how to dig them out here:

https://chat.google.com/room/AAAAag0I08g/6MyzAERgR1Y/iVtSqVSchGs?cls=10

The steps are roughly:

• Use Dev Network tools to find the url of the rendered deploy log - it'll be something like https://riffraff.gutools.co.uk/deployment/updates/<HASH>
• View source on that page, and search for visibility-warning - this will give you the actual text of the 'warning'
• Back in the rendered deploy log, search for that text - it should give enough context to see which deployment it belongs to.
• Back in the actual Riff Raff deploy page, turn on 'Show verbose log lines', and open up the section you identified above - finally you'll see the warning

[adamnfish-gu]

I've opened a PR that adds an "expand all" button to this page. This would mean someone can skip most of the above manual steps, and would be able to quickly scroll through the logs looking for the highlighted warning line(s).

Not an ideal solution, but much easier than busting out the dev tools etc.
#1460