Running C++ units failed

[KHHD]

I am experiencing problem while building turicreate from source on Ubuntu 20.04.

• gcc 9.4.0
• xxd V1.10 27oct9

while running make to build C++ unit tests, it failed with the following error.
the same error as #3243 (comment)

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[ 79%] Building CXX object test/util/CMakeFiles/SpanTests.cxxtest.dir/SpanTests.cxx.o
In file included from /usr/include/c++/9/vector:67,
from /home/oem/Desktop/turicreate/src/core/util/Span.hpp:12,
from /home/oem/Desktop/turicreate/test/util/SpanTests.cxx:9:
/usr/include/c++/9/bits/stl_vector.h: In instantiation of ‘class std::vector<const int, std::allocator >’:
/home/oem/Desktop/turicreate/test/util/SpanTests.cxx:66:41: required from here
/usr/include/c++/9/bits/stl_vector.h:398:66: error: static assertion failed: std::vector must have a non-const, non-volatile value_type
398 | static_assert(is_same<typename remove_cv<_Tp>::type, _Tp>::value,
| ^~~~~
cc1plus: error: unrecognized command line option ‘-Wno-unknown-warning-option’ [-Werror]
cc1plus: error: unrecognized command line option ‘-Wno-parentheses-equality’ [-Werror]
cc1plus: error: unrecognized command line option ‘-Wno-constant-logical-operand’ [-Werror]
cc1plus: error: unrecognized command line option ‘-Wno-mismatched-tags’ [-Werror]
cc1plus: error: unrecognized command line option ‘-Wno-deprecated-register’ [-Werror]
cc1plus: error: unrecognized command line option ‘-Wno-unused-command-line-argument’ [-Werror]
cc1plus: all warnings being treated as errors
make[2]: *** [test/util/CMakeFiles/SpanTests.cxxtest.dir/build.make:63: test/util/CMakeFiles/SpanTests.cxxtest.dir/SpanTests.cxx.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:8206: test/util/CMakeFiles/SpanTests.cxxtest.dir/all] Error 2
make: *** [Makefile:152: all] Error 2

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