error bad-label

Неизвестная метка цикла.

What it means#

break 'name and continue 'name must refer to a label of an enclosing loop, introduced as 'name: for ... (§1.3, §5.6).

Example#

fn main() {
  for a in [1, 2] {
    for b in [1, 2] {
      if a == b { break 'outer }      // <- bad-label
    }
  }
}

bad-label

How to fix#

fn main() {
  'outer: for a in [1, 2] {
    for b in [1, 2] {
      if a == b { break 'outer }
    }
  }
}

Declare the label on the outer loop, or correct its name.

See also#

• outside-loop
• break-value