A `break` statement without a label appeared inside a labeled block.
Example of erroneous code:
```compile_fail,E0695
# #![feature(label_break_value)]
loop {
'a: {
break;
}
}
```
Make sure to always label the `break`:
```
# #![feature(label_break_value)]
'l: loop {
'a: {
break 'l;
}
}
```
Or if you want to `break` the labeled block:
```
# #![feature(label_break_value)]
loop {
'a: {
break 'a;
}
break;
}
```