[1/4] cxx asan '' _gen/bin/oils_for_unix.mycpp.cc _build/obj/cxx-asan/_gen/bin/oils_for_unix.mycpp.o
FAILED: _build/obj/cxx-asan/_gen/bin/oils_for_unix.mycpp.o 
build/ninja-rules-cpp.sh compile_one cxx asan '' _gen/bin/oils_for_unix.mycpp.cc _build/obj/cxx-asan/_gen/bin/oils_for_unix.mycpp.o _build/obj/cxx-asan/_gen/bin/oils_for_unix.mycpp.o.d
_gen/bin/oils_for_unix.mycpp.cc: In member function 'pretty_asdl::MeasuredDoc* pretty::_DocConstructor::Value(value_asdl::value_t*)':
_gen/bin/oils_for_unix.mycpp.cc:30053:39: error: invalid operands of types 'List<pretty_asdl::MeasuredDoc*>*' and 'List<pretty_asdl::MeasuredDoc*>*' to binary 'operator+'
     return _Group(_Concat((maybe_type + NewList<pretty_asdl::MeasuredDoc*>(std::initializer_list<pretty_asdl::MeasuredDoc*>{this->_Value(val, true)}))));
                            ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
ninja: build stopped: subcommand failed.