Fix stacktrace logging for when both test body and teardown throw
exceptions.

Actually fulfill the promise of TestRecord.add_error: if extra error
was added to the record, something went wrong, the test result should
be UNKNOWN (error) as opposed to the original result of the test body.

Also remove a duplicate test result log line.

Bug=28942818

Change-Id: Id8a48244732eed3dfa4d6fdb07224b2ea8ca418c
3 files changed
tree: 61b51b62bad157d51f0fc395b1ef7f984cba51eb
  1. acts/