error: use `.collect()` instead of `::from_iter()`
  --> $DIR/from_iter_instead_of_collect.rs:10:5
   |
LL |     Vec::from_iter(iter_expr);
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `-D clippy::from-iter-instead-of-collect` implied by `-D warnings`
   = help: consider using `iter_expr.collect()`

error: use `.collect()` instead of `::from_iter()`
  --> $DIR/from_iter_instead_of_collect.rs:11:5
   |
LL |     HashMap::<usize, &i8>::from_iter(vec![5,5,5,5].iter().enumerate());
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: consider using `vec![5,5,5,5].iter().enumerate().collect()`

error: aborting due to 2 previous errors