I selected a part of a Mail edit window and exec'd Edit x/^../ c//
I got:

elogapply: can't happen 2632 2632 2463

Looking around the archive, it looks like it's happening
often enough. Should the warning just be taken out?

http://groups-beta.google.com/group/comp.os.plan9/search?group=comp.os.plan9&q=elogapply+can%27t+happen&qt_g=1&searchnow=Search+this+group