"Cannot find member in the struct" build failure(s) — clang 8.0.1

PackageVersionSupposed error messageFull log Bug report
aegisub 3.2.2+dfsg-5util.cpp:30:2: error: no member named 'this_thread' in namespace 'std'; did you mean 'boost::this_thread'? Log
canu 1.9+dfsg-1stl_algo.h:3445:15: error: no member named 'min_element' in namespace 'std'; did you mean '__cxx1998::min_element'? Log
cgit 1.2.1+git2.18.0-1../filter.c:388:10: error: no member named '__fprintf_chk' in 'struct cgit_filter' Log
libnftnl 1.1.5-1object.c:374:19: error: no member named '__builtin___snprintf_chk' in 'struct obj_ops' Log 755956
mercator 0.3.3-5polygon_intersect.h:667:37: error: no member named 'm_orient' in 'WFMath::Polygon<2>' Log
mgba 0.7.0-1cli-debugger.c:156:23: error: no member named '__printf_chk' in 'struct CLIDebuggerBackend' Log

6 errors