This impl had a bound on StreamReader<S, E>; this is incorrect because the second generic parameter to StreamReader is not an error type; it's a buffer type.
Motivation
This "passthrough" Sink impl is currently unusable because it requires the Sink error type be the same as the StreamReader buffer type. This seems like it must have been a typo, because that constraint is not useful.
See the example program in #6642 for more details.
Solution
Resolve this by removing the constraint on StreamReader's buffer type B. It's irrelevant to a Sink impl anyway.
This impl had a bound on
StreamReader<S, E>; this is incorrect because the second generic parameter toStreamReaderis not an error type; it's a buffer type.Motivation
This "passthrough"
Sinkimpl is currently unusable because it requires theSinkerror type be the same as theStreamReaderbuffer type. This seems like it must have been a typo, because that constraint is not useful.See the example program in #6642 for more details.
Solution
Resolve this by removing the constraint on
StreamReader's buffer typeB. It's irrelevant to aSinkimpl anyway.Fixes #6642.