error: invalid unicode character escape --> $DIR/new-unicode-escapes-3.rs:2:15 | LL | let s1 = "\u{d805}"; | ^^^^^^^^ invalid escape | = help: unicode escape must not be a surrogate error: invalid unicode character escape --> $DIR/new-unicode-escapes-3.rs:3:15 | LL | let s2 = "\u{ffffff}"; | ^^^^^^^^^^ invalid escape | = help: unicode escape must be at most 10FFFF error: aborting due to 2 previous errors