makeotf [Warning] Could not find default features file. Font will be built without any layout features.
makeotf [Warning] Could not find FontMenuNameDB file. Font will be built with menu names derived from PostScript name.
WARNING: unhinted <.notdef>
WARNING: unhinted <a>
WARNING: unhinted <b>
makeotfexe processing font <SourceSerifPro-Regular>
WARNING: FontMenuNameDB file was not specified or not found. [SourceSerifPro-Regular]
WARNING: Glyph renaming was requested, but the GlyphOrderAndAliasDB file was not specified.
WARNING: Negative internal leading: win.ascent + win.descent < unitsPerEm
Built release mode font 'font.otf' Revision 1.000
