I'm kind of 99.99% sure that the bot was stuck for 12 hours here:
https://gitpull.it/source/boz-mw/browse/master/include/network/HTTPRequest.php;b300ae42d169f06a8b7f5dbfbc0a42236f0840ae$327
Downstream task:
https://phabricator.wikimedia.org/T375937
\o/
See https://phabricator.wikimedia.org/T375937