ceph failed with:

builddir/build/BUILD/ceph-16.2.4/src/common/Formatter.cc: In member function 'virtual void ceph::XMLFormatter::close_section()':
/builddir/build/BUILD/ceph-16.2.4/src/common/Formatter.cc:449:8: error: 'transform' is not a member of 'std'
  449 |   std::transform(section.begin(), section.end(), section.begin(),
      |        ^~~~~~~~~
/builddir/build/BUILD/ceph-16.2.4/src/common/Formatter.cc: In member function 'void ceph::XMLFormatter::add_value(std::string_view, T)':
/builddir/build/BUILD/ceph-16.2.4/src/common/Formatter.cc:462:8: error: 'transform' is not a member of 'std'
  462 |   std::transform(e.begin(), e.end(), e.begin(),
      |        ^~~~~~~~~
/builddir/build/BUILD/ceph-16.2.4/src/common/Formatter.cc: In member function 'virtual void ceph::XMLFormatter::dump_string(std::string_view, std::string_view)':
/builddir/build/BUILD/ceph-16.2.4/src/common/Formatter.cc:490:8: error: 'transform' is not a member of 'std'
  490 |   std::transform(e.begin(), e.end(), e.begin(),
      |        ^~~~~~~~~
/builddir/build/BUILD/ceph-16.2.4/src/common/Formatter.cc: In member function 'virtual void ceph::XMLFormatter::dump_string_with_attrs(std::string_view, std::string_view, const ceph::FormatterAttrs&)':
/builddir/build/BUILD/ceph-16.2.4/src/common/Formatter.cc:502:8: error: 'transform' is not a member of 'std'
  502 |   std::transform(e.begin(), e.end(), e.begin(),
      |        ^~~~~~~~~
/builddir/build/BUILD/ceph-16.2.4/src/common/Formatter.cc: In member function 'virtual void ceph::XMLFormatter::dump_format_va(std::string_view, const char*, bool, const char*, __va_list_tag*)':
/builddir/build/BUILD/ceph-16.2.4/src/common/Formatter.cc:526:8: error: 'transform' is not a member of 'std'
  526 |   std::transform(e.begin(), e.end(), e.begin(),
      |        ^~~~~~~~~
/builddir/build/BUILD/ceph-16.2.4/src/common/Formatter.cc: In member function 'void ceph::XMLFormatter::open_section_in_ns(std::string_view, const char*, const ceph::FormatterAttrs*)':
/builddir/build/BUILD/ceph-16.2.4/src/common/Formatter.cc:580:8: error: 'transform' is not a member of 'std'
  580 |   std::transform(e.begin(), e.end(), e.begin(),
      |        ^~~~~~~~~

Doesn't look like a fmt problem.

https://kojipkgs.fedoraproject.org//work/tasks/5257/71345257/build.log

Thanks,
Richard