error: use of `writeln!(stderr(), ...).unwrap()`. Consider using `eprintln!` instead
  --> $DIR/explicit_write_non_rustfix.rs:7:5
   |
LL |     writeln!(std::io::stderr(), "foo {}", bar).unwrap();
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `-D clippy::explicit-write` implied by `-D warnings`

error: aborting due to previous error