Gentoo's Bugzilla –
Attachment 378736 Details for
Bug 511508dev-tex/luatex-0.70.1-r2 with app-text/poppler-2.26.1 - In function 'int m_Catalog_getStructTreeRoot(lua_State*)': luatexdir/lua/lepdflib.cc:201:7: error: cannot convert 'StructTreeRoot*' to 'Object*' in assignment