error: this form of character escape may only be used with characters in the range [/x00-/x7f]
  --> $DIR/ascii-only-character-escape.rs:14:16
   |
LL |     let x = "/x80"; //~ ERROR may only be used
   |                ^^

error: this form of character escape may only be used with characters in the range [/x00-/x7f]
  --> $DIR/ascii-only-character-escape.rs:15:16
   |
LL |     let y = "/xff"; //~ ERROR may only be used
   |                ^^

error: this form of character escape may only be used with characters in the range [/x00-/x7f]
  --> $DIR/ascii-only-character-escape.rs:16:16
   |
LL |     let z = "/xe2"; //~ ERROR may only be used
   |                ^^

error: aborting due to 3 previous errors