I know that every once in a while jenkins goes down but it usually comes back a few days later and now it has been over a month since it stopped working.
I have contacted player about it, but he hasn't answered.
That means IC2 for older versions is effectively dead.
But they can still develop the mod without jenkins
Pretty sure the git server and everything else is hosted there too.
I doubt everything is deleted, but i doubt anyone can push to the server.
Also the "new" IC2Exp team, was making superficial changes at most every few months for a couple days.
The amount of work required getting it done takes so long that there has to be multiple changes per day per person to make this work in a "reasonable timeframe"
In my modpack 1.4.7 i cant create world because industrial craft 2 crash always