misc CI fixes

test/Jamfile

@@ -82,6 +82,7 @@ local requirements =
         <define>BOOST_ASIO_DISABLE_BOOST_BIND=1
         <define>BOOST_ASIO_DISABLE_BOOST_DATE_TIME=1
         <define>BOOST_ASIO_DISABLE_BOOST_REGEX=1
+        <define>BOOST_ASIO_DISABLE_BOOST_COROUTINE=1
         <define>BOOST_ASIO_HAS_DEFAULT_FUNCTION_TEMPLATE_ARGUMENTS=1
         <define>BOOST_ALLOW_DEPRECATED_HEADERS=1
         <toolset>msvc:<cxxflags>"/bigobj"
@@ -141,11 +142,15 @@ alias common_test_sources
         common/src/tracker_executor.cpp
     ;
 
+
 alias boost_mysql_test
     :
         boost_mysql_compiled
         # Unit test library generates some internal warnings we're not interested in
         /boost/test//boost_unit_test_framework/<warnings-as-errors>off
+        # Boost.Context causes failures with warnings-as-errors
+        # under libc++, because it builds objects that raise a -stdlib=libc++ unused warning
+        /boost/context//boost_context/<warnings-as-errors>off
     : requirements
         <link>static
         <include>common/include

test/integration/Jamfile

@@ -23,21 +23,15 @@ local test_filter = [ sequence.join $(test_exclusions) : ":" ] ;
 
 local test_command = "-t $(test_filter)" ;
 
-# Boost.Context causes failures with warnings-as-errors
-# under libc++, because it builds objects that raise a -stdlib=libc++ unused warning
-local context_lib = /boost/context//boost_context/<warnings-as-errors>off ;
-
 cpp-pch pch
     :
         pch.hpp
-        $(context_lib)
         /boost/mysql/test//boost_mysql_test
     ;
 
 
 run 
         pch
-        $(context_lib)
         /boost/mysql/test//common_test_sources
         /boost/mysql/test//boost_mysql_test
 

test/unit/test/connection_pool/connection_pool_impl.cpp

@@ -206,7 +206,11 @@ class mock_timer
 
     template <class CompletionToken>
     auto async_wait(CompletionToken&& token)
-        -> decltype(asio::async_initiate<CompletionToken, void(error_code)>(initiate_wait(), token, this))
+        -> decltype(asio::async_initiate<CompletionToken, void(error_code)>(
+            initiate_wait(),
+            token,
+            std::declval<mock_timer*>()
+        ))
     {
         return asio::async_initiate<CompletionToken, void(error_code)>(initiate_wait(), token, this);
     }