1 error[E0308]: mismatched types
2 --> $DIR/issue-33884.rs:6:22
4 LL | stream.write_fmt(format!("message received"))
5 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected struct `Arguments`, found struct `String`
7 = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0308`.