I updated from r41 to r43 today and the server keeps crashing shortly after it started without world interaction, I am just standing still. Report attached.
crash-2016-06-11_15.19.08-server.txt

After rolling back to r41, now the server crashes with different report, also attached.
crash-2016-06-11_15.24.14-server.txt

I just updated Forge to 1957 and with r41 it crashed again.
crash-2016-06-11_15.35.21-server.txt

Hopefully crashed with latest commit.