rust backtrace on openbsd

running 1 test
test foo::commands::tests::test_xml_parser ... FAILED

failures:

---- foo::commands::tests::test_xml_parser stdout ----
Error: 1:1 Unexpected end of stream: no root element found
thread 'foo::commands::tests::test_xml_parser' panicked at 'foo', blah/src/foo/commands.rs:387:4
stack backtrace:
   0: __register_frame_info
   1: __register_frame_info
   2: __register_frame_info
   3: __register_frame_info
   4: __register_frame_info
   5: __register_frame_info
   6: __register_frame_info
   7: __register_frame_info
   8: __register_frame_info
   9: __register_frame_info
  10: __register_frame_info
  11: __register_frame_info
  12: __register_frame_info
  13: __register_frame_info
  14: __register_frame_info
  15: __register_frame_info
  16: __register_frame_info
  17: pthread_create


failures:
    foo::commands::tests::test_xml_parser