Regressions on trunk at revision 250601 vs revision 250573

[Intel Automatic Testing System [Intel64 Core AVX2 PIC]]

New failures:

New passes:
ERROR: 27_io/basic_fstream/53984.cc: unknown dg option: dg-require-file-io 18 {} for " dg-require-file-io 18 "" "
ERROR: 27_io/basic_fstream/53984.cc: unknown dg option: dg-require-file-io 18 {} for " dg-require-file-io 18 "" "