just completely ignoring during-DESTROY exceptions? I don't have 5.14 handy anywhere so I can't test exactly what it does.

They are output to STDERR like before.

$ perl -Mwarnings -Mstrict -E '
  sub DESTROY { say "invoked destructor"; die "aieeee" }
  say "creating object";
  { bless( {} ) }
  say "object destroyed (should not reach here): $@"
'
creating object
invoked destructor
        (in cleanup) aieeee at -e line 2.
object destroyed (should not reach here):
[download]

Like before, that only happens if warnings are on, so it can be completely silent!!

IIRC, more work is planned, but I haven't heard anything in a while.