Upgrading mongodb to 4.0.25 for a heavily used dev environment,

Running the DevOps jenkins job thingy,

Failing miserably,

Asking the DevOps to take a look,

"Did you upgrade to 3.6 before?",

"no",

"Well mongodb EC2s are deleted",

FML

Mongodb 3.6?

MongoDb 4.0?

All unsupported versions long deprecated / EOL...

Do you still work with Internet Explorer 6 or are u allowed to use Internet Explorer 8? XD

But yeah... There were quite a lot of changes in that cycle, years ago.