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

```log ── 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::operator= &, 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::__unordered_map_hasher, std::hash, std::equal_to>, std::__unordered_map_equal, std::equal_to, std::hash>, std::allocator>>::__assign_unique *>' 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::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' to 'const __conditional_t::value && is_copy_assignable::value, pair, __nat>' (aka 'const std::__nat') for 1st argument 289 | operator=(__conditional_t< is_copy_assignable::value && is_copy_assignable::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' to '__conditional_t::value && is_move_assignable::value, pair, __nat>' (aka 'std::__nat') for 1st argument 298 | _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair& operator=( | ^ 299 | __conditional_t< is_move_assignable::value && is_move_assignable::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::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' to 'const pair' 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::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::__unordered_map_hasher, std::hash, std::equal_to>, std::__unordered_map_equal, std::equal_to, std::hash>, std::allocator>>::__assign_multi, 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::__unordered_map_hasher, std::hash, std::equal_to>, std::__unordered_map_equal, std::equal_to, std::hash>, std::allocator>>::operator=' requested here 1187 | __table_ = __u.__table_; | ^ lib/crow/json.h:1681:26: note: in instantiation of member function 'std::unordered_map::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') to 'const __conditional_t::value && is_copy_assignable::value, pair, __nat>' (aka 'const std::__nat') for 1st argument 289 | operator=(__conditional_t< is_copy_assignable::value && is_copy_assignable::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') to '__conditional_t::value && is_move_assignable::value, pair, __nat>' (aka 'std::__nat') for 1st argument 298 | _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair& operator=( | ^ 299 | __conditional_t< is_move_assignable::value && is_move_assignable::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::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' to 'const pair' 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 ```