gcc-9.2 complains about SortPermutation.hh

[KineticTheory]

[  3%] Building CXX object src/ds++/test/CMakeFiles/Ut_dsxx_tstSortPermutation_exe.dir/tstSortPermutation.cc.o
cd /scratch/kellyt/gcc-mpid/src/ds++/test && /ccs/opt/vendors/spack.20200429/opt/spack/linux-rhel7-sandybridge/gcc-4.8.5/gcc-9.3.0-5meziogpwuvromk6iuxk7enejt4muwne/bin/g++  -DPROJECT_BINARY_DIR=\"/scratch/kellyt/gcc-mpid/src/ds++/test\" -DPROJECT_SOURCE_DIR=\"/home/kellyt/draco/src/ds++/test\" -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D__STDC_CONSTANT_MACROS -I/home/kellyt/draco/src -I/scratch/kellyt/gcc-mpid/src/ds++  -Wcast-align -Wpointer-arith -Wall -pedantic -Wfloat-equal -Wunused-macros -fsanitize=bounds-strict -Wshadow -Wformat=2 -Wno-expansion-to-defined -Wnarrowing -march=native -fopenmp   -Werror  -g -gdwarf-3 -fno-inline -fno-eliminate-unused-debug-types -O0 -Wextra -Wundef -Wunreachable-code -DDEBUG -fsanitize=float-divide-by-zero -fsanitize=float-cast-overflow -fdiagnostics-color=auto -fsanitize=signed-integer-overflow -Woverloaded-virtual -Wnoexcept -Wsuggest-attribute=const -Wunused-local-typedefs -Wconversion -Wdouble-promotion  -fPIE   -std=c++14 -o CMakeFiles/Ut_dsxx_tstSortPermutation_exe.dir/tstSortPermutation.cc.o -c /home/kellyt/draco/src/ds++/test/tstSortPermutation.cc
In file included from /home/kellyt/draco/src/ds++/test/tstSortPermutation.cc:11:
/home/kellyt/draco/src/ds++/SortPermutation.hh:105:5: error: but 'rtt_dsxx::SortPermutation::Proxy<IT>::Proxy(const rtt_dsxx::SortPermutation::Proxy<IT>&) [with IT = __gnu_cxx::__normal_iterator<Foo*, std::vector<Foo> >]' does not throw; perhaps it should be declared 'noexcept' [-Werror=noexcept]
  105 |     Proxy(Proxy const &rhs) : pos(rhs.pos), iters(rhs.iters){};
      |     ^~~~~
/home/kellyt/draco/src/ds++/SortPermutation.hh:105:5: error: but 'rtt_dsxx::SortPermutation::Proxy<IT>::Proxy(const rtt_dsxx::SortPermutation::Proxy<IT>&) [with IT = std::_List_const_iterator<Foo>]' does not throw; perhaps it should be declared 'noexcept' [-Werror=noexcept]
/home/kellyt/draco/src/ds++/SortPermutation.hh:105:5: error: but 'rtt_dsxx::SortPermutation::Proxy<IT>::Proxy(const rtt_dsxx::SortPermutation::Proxy<IT>&) [with IT = Foo*]' does not throw; perhaps it should be declared 'noexcept' [-Werror=noexcept]
/home/kellyt/draco/src/ds++/SortPermutation.hh:105:5: error: but 'rtt_dsxx::SortPermutation::Proxy<IT>::Proxy(const rtt_dsxx::SortPermutation::Proxy<IT>&) [with IT = std::_List_iterator<FooGT>]' does not throw; perhaps it should be declared 'noexcept' [-Werror=noexcept]
/home/kellyt/draco/src/ds++/SortPermutation.hh:105:5: error: but 'rtt_dsxx::SortPermutation::Proxy<IT>::Proxy(const rtt_dsxx::SortPermutation::Proxy<IT>&) [with IT = __gnu_cxx::__normal_iterator<const FooGT*, std::vector<FooGT> >]' does not throw; perhaps it should be declared 'noexcept' [-Werror=noexcept]
/home/kellyt/draco/src/ds++/SortPermutation.hh:105:5: error: but 'rtt_dsxx::SortPermutation::Proxy<IT>::Proxy(const rtt_dsxx::SortPermutation::Proxy<IT>&) [with IT = const FooGT*]' does not throw; perhaps it should be declared 'noexcept' [-Werror=noexcept]
cc1plus: all warnings being treated as errors