Raised on attempt to Ractor#take if there was an uncaught exception in the
Ractor. Its cause will contain
the original exception, and ractor is the original ractor it
was raised in.
r = Ractor.new { raise "Something weird happened" } begin r.take rescue => e p e # => #<Ractor::RemoteError: thrown by remote Ractor.> p e.ractor == r # => true p e.cause # => #<RuntimeError: Something weird happened> end