ci: setup rhub2

[eitsupi]

Related to #145

The rhub2 workflow is useful for the test.
Merge this and run the workflow with this option (clang18):

(If you want to work on another branch, change the target branch from master as well)

Then I got this:

Details

── R CMD build ─────────────────────────────────────────────────────────────────
* checking for file ‘.../DESCRIPTION’ ... OK
* preparing ‘httpgd’:
* checking DESCRIPTION meta-information ... OK
* cleaning src
* running ‘cleanup’
* installing the package to build vignettes
      -----------------------------------
* installing *source* package ‘httpgd’ ...
** using staged installation
** libs
using C++ compiler: ‘Ubuntu clang version 18.1.0 (++20240307093122+461274b81d86-1~exp1~20240307213239.65)’
using C++14
rm -f httpgd.so cpp11.o httpgd.o httpgd_rng.o httpgd_webserver.o unigd_impl.o
clang++-18 -stdlib=libc++ -std=gnu++14 -I"/opt/R/devel/lib/R/include" -DNDEBUG -Ilib -DFMT_HEADER_ONLY -I'/github/home/R/x86_64-pc-linux-gnu-library/4.4/cpp11/include' -I'/github/home/R/x86_64-pc-linux-gnu-library/4.4/AsioHeaders/include' -I'/github/home/R/x86_64-pc-linux-gnu-library/4.4/unigd/include' -I/usr/local/include    -fpic  -O3 -Wall -pedantic -frtti -Wp,-D_FORTIFY_SOURCE=3 -Wall -pedantic -fdiagnostics-color=always  -c cpp11.cpp -o cpp11.o
clang++-18 -stdlib=libc++ -std=gnu++14 -I"/opt/R/devel/lib/R/include" -DNDEBUG -Ilib -DFMT_HEADER_ONLY -I'/github/home/R/x86_64-pc-linux-gnu-library/4.4/cpp11/include' -I'/github/home/R/x86_64-pc-linux-gnu-library/4.4/AsioHeaders/include' -I'/github/home/R/x86_64-pc-linux-gnu-library/4.4/unigd/include' -I/usr/local/include    -fpic  -O3 -Wall -pedantic -frtti -Wp,-D_FORTIFY_SOURCE=3 -Wall -pedantic -fdiagnostics-color=always  -c httpgd.cpp -o httpgd.o
In file included from httpgd.cpp:7:
In file included from /github/home/R/x86_64-pc-linux-gnu-library/4.4/cpp11/include/cpp11/logicals.hpp:11:
In file included from /github/home/R/x86_64-pc-linux-gnu-library/4.4/cpp11/include/cpp11/r_bool.hpp:4:
In file included from /usr/lib/llvm-18/bin/../include/c++/v1/ostream:189:
In file included from /usr/lib/llvm-18/bin/../include/c++/v1/format:195:
In file included from /usr/lib/llvm-18/bin/../include/c++/v1/__format/container_adaptor.h:24:
In file included from /usr/lib/llvm-18/bin/../include/c++/v1/queue:272:
In file included from /usr/lib/llvm-18/bin/../include/c++/v1/deque:2602:
In file included from /usr/lib/llvm-18/bin/../include/c++/v1/functional:526:
In file included from /usr/lib/llvm-18/bin/../include/c++/v1/__functional/boyer_moore_searcher.h:26:
/usr/lib/llvm-18/bin/../include/c++/v1/unordered_map:882:13: error: no viable overloaded '='
  882 |     __ref() = std::forward<_ValueTp>(__v);
      |     ~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/lib/llvm-18/bin/../include/c++/v1/__hash_table:1211:44: note: in instantiation of function template specialization 'std::__hash_value_type<std::string, crow::json::wvalue>::operator=<const std::pair<const std::string, crow::json::wvalue> &, void>' requested here
 1211 |         __cache->__upcast()->__get_value() = *__first;
      |                                            ^
/usr/lib/llvm-18/bin/../include/c++/v1/unordered_map:1722:12: note: in instantiation of function template specialization 'std::__hash_table<std::__hash_value_type<std::string, crow::json::wvalue>, std::__unordered_map_hasher<std::string, std::__hash_value_type<std::string, crow::json::wvalue>, std::hash<std::string>, std::equal_to<std::string>>, std::__unordered_map_equal<std::string, std::__hash_value_type<std::string, crow::json::wvalue>, std::equal_to<std::string>, std::hash<std::string>>, std::allocator<std::__hash_value_type<std::string, crow::json::wvalue>>>::__assign_unique<const std::pair<const std::string, crow::json::wvalue> *>' requested here
 1722 |   __table_.__assign_unique(__il.begin(), __il.end());
      |            ^
lib/crow/json.h:1662:26: note: in instantiation of member function 'std::unordered_map<std::string, crow::json::wvalue>::operator=' requested here
 1662 |                     (*o) = initializer_list;
      |                          ^
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:289:3: note: candidate function not viable: no known conversion from 'const std::pair<const std::string, crow::json::wvalue>' to 'const __conditional_t<is_copy_assignable<first_type>::value && is_copy_assignable<second_type>::value, pair<string &, wvalue &>, __nat>' (aka 'const std::__nat') for 1st argument
  289 |   operator=(__conditional_t< is_copy_assignable<first_type>::value && is_copy_assignable<second_type>::value,
      |   ^         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  290 |                              pair,
      |                              ~~~~~
  291 |                              __nat> const& __p)
      |                              ~~~~~~~~~~~~~~~~~
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:298:61: note: candidate function not viable: no known conversion from 'const std::pair<const std::string, crow::json::wvalue>' to '__conditional_t<is_move_assignable<first_type>::value && is_move_assignable<second_type>::value, pair<string &, wvalue &>, __nat>' (aka 'std::__nat') for 1st argument
  298 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair& operator=(
      |                                                             ^
  299 |       __conditional_t< is_move_assignable<first_type>::value && is_move_assignable<second_type>::value, pair, __nat>&&
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  300 |           __p)
      |           ~~~
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:311:61: note: candidate template ignored: requirement 'is_assignable<crow::json::wvalue &, const crow::json::wvalue &>::value' was not satisfied [with _U1 = const std::string, _U2 = crow::json::wvalue]
  311 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair& operator=(pair<_U1, _U2> const& __p) {
      |                                                             ^
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:321:61: note: candidate template ignored: deduced type 'pair<...>' of 1st parameter does not match adjusted type 'const pair<...>' of argument [with _U1 = const std::string, _U2 = crow::json::wvalue, $2 = nullptr]
  321 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair& operator=(pair<_U1, _U2>&& __p) {
      |                                                             ^
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:422:61: note: candidate template ignored: could not match 'tuple' against 'pair'
  422 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair& operator=(tuple<_U1, _U2> const& __p) {
      |                                                             ^
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:431:61: note: candidate template ignored: could not match 'tuple' against 'pair'
  431 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair& operator=(tuple<_U1, _U2>&& __p) {
      |                                                             ^
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:463:61: note: candidate template ignored: could not match 'array' against 'pair'
  463 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair& operator=(array<_Up, 2> const& __p) {
      |                                                             ^
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:470:61: note: candidate template ignored: could not match 'array' against 'pair'
  470 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair& operator=(array<_Up, 2>&& __p) {
      |                                                             ^
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:80:29: note: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'const pair<const std::string, crow::json::wvalue>' to 'const pair<std::string &, crow::json::wvalue &>' for 1st argument
   80 | struct _LIBCPP_TEMPLATE_VIS pair
      |                             ^~~~
In file included from httpgd.cpp:7:
In file included from /github/home/R/x86_64-pc-linux-gnu-library/4.4/cpp11/include/cpp11/logicals.hpp:11:
In file included from /github/home/R/x86_64-pc-linux-gnu-library/4.4/cpp11/include/cpp11/r_bool.hpp:4:
In file included from /usr/lib/llvm-18/bin/../include/c++/v1/ostream:189:
In file included from /usr/lib/llvm-18/bin/../include/c++/v1/format:195:
In file included from /usr/lib/llvm-18/bin/../include/c++/v1/__format/container_adaptor.h:24:
In file included from /usr/lib/llvm-18/bin/../include/c++/v1/queue:272:
In file included from /usr/lib/llvm-18/bin/../include/c++/v1/deque:2602:
In file included from /usr/lib/llvm-18/bin/../include/c++/v1/functional:526:
In file included from /usr/lib/llvm-18/bin/../include/c++/v1/__functional/boyer_moore_searcher.h:26:
/usr/lib/llvm-18/bin/../include/c++/v1/unordered_map:871:13: error: no viable overloaded '='
  871 |     __ref() = __v.__get_value();
      |     ~~~~~~~ ^ ~~~~~~~~~~~~~~~~~
/usr/lib/llvm-18/bin/../include/c++/v1/__hash_table:1243:44: note: in instantiation of member function 'std::__hash_value_type<std::string, crow::json::wvalue>::operator=' requested here
 1243 |         __cache->__upcast()->__get_value() = *__first;
      |                                            ^
/usr/lib/llvm-18/bin/../include/c++/v1/__hash_table:1100:5: note: in instantiation of function template specialization 'std::__hash_table<std::__hash_value_type<std::string, crow::json::wvalue>, std::__unordered_map_hasher<std::string, std::__hash_value_type<std::string, crow::json::wvalue>, std::hash<std::string>, std::equal_to<std::string>>, std::__unordered_map_equal<std::string, std::__hash_value_type<std::string, crow::json::wvalue>, std::equal_to<std::string>, std::hash<std::string>>, std::allocator<std::__hash_value_type<std::string, crow::json::wvalue>>>::__assign_multi<std::__hash_const_iterator<std::__hash_node<std::__hash_value_type<std::string, crow::json::wvalue>, void *> *>>' requested here
 1100 |     __assign_multi(__u.begin(), __u.end());
      |     ^
/usr/lib/llvm-18/bin/../include/c++/v1/unordered_map:1187:14: note: in instantiation of member function 'std::__hash_table<std::__hash_value_type<std::string, crow::json::wvalue>, std::__unordered_map_hasher<std::string, std::__hash_value_type<std::string, crow::json::wvalue>, std::hash<std::string>, std::equal_to<std::string>>, std::__unordered_map_equal<std::string, std::__hash_value_type<std::string, crow::json::wvalue>, std::equal_to<std::string>, std::hash<std::string>>, std::allocator<std::__hash_value_type<std::string, crow::json::wvalue>>>::operator=' requested here
 1187 |     __table_ = __u.__table_;
      |              ^
lib/crow/json.h:1681:26: note: in instantiation of member function 'std::unordered_map<std::string, crow::json::wvalue>::operator=' requested here
 1681 |                     (*o) = value;
      |                          ^
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:289:3: note: candidate function not viable: no known conversion from 'const value_type' (aka 'const pair<const std::string, crow::json::wvalue>') to 'const __conditional_t<is_copy_assignable<first_type>::value && is_copy_assignable<second_type>::value, pair<string &, wvalue &>, __nat>' (aka 'const std::__nat') for 1st argument
  289 |   operator=(__conditional_t< is_copy_assignable<first_type>::value && is_copy_assignable<second_type>::value,
      |   ^         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  290 |                              pair,
      |                              ~~~~~
  291 |                              __nat> const& __p)
      |                              ~~~~~~~~~~~~~~~~~
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:298:61: note: candidate function not viable: no known conversion from 'const value_type' (aka 'const pair<const std::string, crow::json::wvalue>') to '__conditional_t<is_move_assignable<first_type>::value && is_move_assignable<second_type>::value, pair<string &, wvalue &>, __nat>' (aka 'std::__nat') for 1st argument
  298 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair& operator=(
      |                                                             ^
  299 |       __conditional_t< is_move_assignable<first_type>::value && is_move_assignable<second_type>::value, pair, __nat>&&
      |       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  300 |           __p)
      |           ~~~
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:311:61: note: candidate template ignored: requirement 'is_assignable<crow::json::wvalue &, const crow::json::wvalue &>::value' was not satisfied [with _U1 = const std::string, _U2 = crow::json::wvalue]
  311 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair& operator=(pair<_U1, _U2> const& __p) {
      |                                                             ^
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:321:61: note: candidate template ignored: deduced type 'pair<...>' of 1st parameter does not match adjusted type 'const pair<...>' of argument [with _U1 = const std::string, _U2 = crow::json::wvalue, $2 = nullptr]
  321 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair& operator=(pair<_U1, _U2>&& __p) {
      |                                                             ^
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:422:61: note: candidate template ignored: could not match 'tuple' against 'pair'
  422 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair& operator=(tuple<_U1, _U2> const& __p) {
      |                                                             ^
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:431:61: note: candidate template ignored: could not match 'tuple' against 'pair'
  431 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair& operator=(tuple<_U1, _U2>&& __p) {
      |                                                             ^
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:463:61: note: candidate template ignored: could not match 'array' against 'pair'
  463 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair& operator=(array<_Up, 2> const& __p) {
      |                                                             ^
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:470:61: note: candidate template ignored: could not match 'array' against 'pair'
  470 |   _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 pair& operator=(array<_Up, 2>&& __p) {
      |                                                             ^
/usr/lib/llvm-18/bin/../include/c++/v1/__utility/pair.h:80:29: note: candidate function (the implicit copy assignment operator) not viable: no known conversion from 'const pair<const key_type, mapped_type>' to 'const pair<std::string &, crow::json::wvalue &>' for 1st argument
   80 | struct _LIBCPP_TEMPLATE_VIS pair
      |                             ^~~~
2 errors generated.
make: *** [/opt/R/devel/lib/R/etc/Makeconf:204: httpgd.o] Error 1