From my JPRT east job for unrelated code changes

# JRE version: Java(TM) SE Runtime Environment (8.0-b131) (build 1.8.0-fastdebug-b131)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.0-b62-internal-201403041535.cphillim.rt-heapbase2-fastdebug mixed mode bsd-amd64 compressed oops)
# Problematic frame:
# V [libjvm.dylib+0x2ea4f5] oopDesc::oop_iterate(PushOrMarkClosure*)+0xad

Attaching log file and hs_err file. I can't get on the machine to get the core file. It's probably not easily reproduceable. I'll add more info when I get it.