error[E0433]: failed to resolve: use of undeclared type `IntoIter`
  --> $DIR/issue-82956.rs:25:24
   |
LL |         let mut iter = IntoIter::new(self);
   |                        ^^^^^^^^ use of undeclared type `IntoIter`
   |
help: consider importing one of these structs
   |
LL + use std::array::IntoIter;
   |
LL + use std::collections::binary_heap::IntoIter;
   |
LL + use std::collections::btree_map::IntoIter;
   |
LL + use std::collections::btree_set::IntoIter;
   |
     and 9 other candidates

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0433`.