So I installed Hub and migrated YouTrack to a zip installation and was able to get that to use Hub. Then I went to install Upsource and it got to the analyzer and failed. Looked in stderr and found the immensely useful message that the analyzer cannot return a non-zero value.
It's being installed on a machine with 16GBs of RAM, but in the typical insane VM irony, this machine now has all the other components chewing up RAM: youtrack, teamcity, hub. Plus we have a few other java instances.
It's super depressing that after 2 decades, installing a few new versions of a couple apps takes several days and involves myriad failures where it's not clear what went wrong.
Thanks for any help.
Went and tried it again. First I found that there is a log file specifically for the analyzer and it reports failing to be able to setup authorization through hub. Which makes no sense. The verification page asked for the url and verified it, then I got the popup authorizing full access. Furthermore, I migrated YouTrack a few hours ago.