error: zero-width space detected
 --> $DIR/unicode.rs:6:12
  |
6 |     print!("Here >​< is a ZWS, and ​another");
  |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: `-D zero-width-space` implied by `-D warnings`
  = help: Consider replacing the string with:
          ""Here >/u{200B}< is a ZWS, and /u{200B}another""

error: non-nfc unicode sequence detected
  --> $DIR/unicode.rs:12:12
   |
12 |     print!("̀àh?");
   |            ^^^^^^^
   |
   = note: `-D unicode-not-nfc` implied by `-D warnings`
   = help: Consider replacing the string with:
           ""̀àh?""

error: literal non-ASCII character detected
  --> $DIR/unicode.rs:18:12
   |
18 |     print!("Üben!");
   |            ^^^^^^^
   |
   = note: `-D non-ascii-literal` implied by `-D warnings`
   = help: Consider replacing the string with:
           ""/u{dc}ben!""