Benny wrote:

As a matter of fact, I don't feel confident enough to deploy wmf18, which is powering mediawiki/metawiki/testwiki now, to all other wikis.

and Erik in IRC pointed out Flow in 1.24wmf18 depends on 'user-locators' array in Echo.

I created https://trello.com/c/XdoN5OCw/551-swat-deploy-echo-fixes, copy-pasting:

So spage will prepare Echo and Flow bumps to freeze enwiki where it is when Thursday's deployment of 1.24wmf18 goes out. Legoktm already reverted Echo to 1.24wmf16 branch.

Echo at 193307b (Creating new wmf/1.24wmf16 branch)
Flow at 4b1810e (Creating new wmf/1.24wmf17 branch)

flow-tests.wmflabs.org is set up with this for testing.

=S Page Features engineer