error: `..` can only be used once per slice pattern
  --> $DIR/issue-69103-extra-binding-subslice.rs:6:22
   |
LL |     let [a @ .., b @ ..] = &mut [1, 2];
   |              --      ^^ can only be used once per slice pattern
   |              |
   |              previously used here

error: `..` can only be used once per slice pattern
  --> $DIR/issue-69103-extra-binding-subslice.rs:10:18
   |
LL |     let [.., c @ ..] = [1, 2];
   |          --      ^^ can only be used once per slice pattern
   |          |
   |          previously used here

error: `..` patterns are not allowed here
  --> $DIR/issue-69103-extra-binding-subslice.rs:15:18
   |
LL |     let (.., d @ ..) = (1, 2);
   |                  ^^
   |
   = note: only allowed in tuple, tuple struct, and slice patterns

error: aborting due to 3 previous errors