warning: lint `disjoint_capture_migration` has been renamed to `rust_2021_incompatible_closure_captures`
  --> $DIR/old_name.rs:6:10
   |
LL | #![allow(disjoint_capture_migration)]
   |          ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `rust_2021_incompatible_closure_captures`
   |
   = note: `#[warn(renamed_and_removed_lints)]` on by default

warning: 1 warning emitted