src->source, dst->destination

and reformat a bit

core/src/Kokkos_CopyViews.hpp

@@ -614,15 +614,15 @@ void view_copy(const DstType& dst, const SrcType& src) {
 
   if (!DstExecCanAccessSrc && !SrcExecCanAccessDst) {
     std::ostringstream ss;
-    ss << "Error: Kokkos::deep_copy with no available copy mechanism: ";
-    ss << "from src (\"" << src.label() << "\") to dst (\"" << dst.label()
-       << "\").\n";
-    ss << "There is no common execution space that can access both src's "
-          "space\n";
-    ss << "(" << src_memory_space().name() << ") and dst's space ("
-       << dst_memory_space().name() << "), ";
-    ss << "so src and dst\n";
-    ss << "must be contiguous and have the same layout.\n";
+    ss << "Error: Kokkos::deep_copy with no available copy mechanism: "
+       << "from source view (\"" << src.label() << "\") to destination view (\""
+       << dst.label() << "\").\n"
+       << "There is no common execution space that can access both source's "
+          "space\n"
+       << "(" << src_memory_space().name() << ") and destination's space ("
+       << dst_memory_space().name() << "), "
+       << "so source and destination\n"
+       << "must be contiguous and have the same layout.\n";
     Kokkos::Impl::throw_runtime_exception(ss.str());
   }