https://github.com/swiftlang/swift/issues/75853 なんで AsyncThrowingStream のジェネリクスにエラー型も入ってるのに、実際作る時は any Error しか受け付けないねん

AsyncThrowingStream initializer Failure type is restricted to Swif...

Description Copied from to #64165 and expanded The compiler complains if you try to specialize your AsyncThrowingStream with an error type other than Swift.Error. You get the following error: Initi...