This is required since processAllocator returns an ISharedAlloactor since 2.075.0. Because HashMap is operating only thread-local, this should generally be safe.
The library is able to support simple TCP servers in the current state. The API is still mostly compatible with mainline vibe.d, but the driver systen has been replaced by the eventcore library and sockets/files/timers/... are now structs with automatic reference counting instead of GC collected classes. The stream interfaces have been removed for now.