error[E0426]: use of undeclared label `'aaaaaa`
  --> $DIR/issue-73541-3.rs:4:29
   |
LL |     'aaaaab: loop {
   |     ------- a label with a similar name exists but is unreachable
LL |         || {
LL |             loop { continue 'aaaaaa }
   |                             ^^^^^^^ undeclared label `'aaaaaa`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0426`.