error[E0308]: match arms have incompatible types
   --> sasl.rs:197:51
    |
197 |         let (msg, stream): (Option<Message>, S) = wait_for_msg(stream_ref, i)?;
    |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected type parameter, found anonymized type
    |
    = note: expected type `(std::option::Option<irc::proto::Message>, S)`
               found type `(std::option::Option<irc::proto::Message>, impl sasl::futures::Stream)`
note: match arm with an incompatible type
   --> sasl.rs:197:51
    |
197 |         let (msg, stream): (Option<Message>, S) = wait_for_msg(stream_ref, i)?;
    |