Master restart when two users access 'manage jenkins'

[Razvan Cosma]

Hi - I've noticed a hard to catch error triggered only when two users, on different computers, access the 'Manage Jenkins' page: it immediately crashes, with no obvious hints in the log, and the Docker container we're running it in is restarted (it's watched by Marathon). Has anyone else encountered anything of the sort? Any hints on where I could debug?