error: repeating `Vec::with_capacity` using `vec![x; n]`, which does not retain capacity
  --> $DIR/repeat_vec_with_capacity.rs:5:9
   |
LL |         vec![Vec::<()>::with_capacity(42); 123];
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: only the last `Vec` will have the capacity
   = note: `-D clippy::repeat-vec-with-capacity` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::repeat_vec_with_capacity)]`
help: if you intended to initialize multiple `Vec`s with an initial capacity, try
   |
LL |         (0..123).map(|_| Vec::<()>::with_capacity(42)).collect::<Vec<_>>();
   |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

error: repeating `Vec::with_capacity` using `vec![x; n]`, which does not retain capacity
  --> $DIR/repeat_vec_with_capacity.rs:11:9
   |
LL |         vec![Vec::<()>::with_capacity(42); n];
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: only the last `Vec` will have the capacity
help: if you intended to initialize multiple `Vec`s with an initial capacity, try
   |
LL |         (0..n).map(|_| Vec::<()>::with_capacity(42)).collect::<Vec<_>>();
   |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

error: repeating `Vec::with_capacity` using `iter::repeat`, which does not retain capacity
  --> $DIR/repeat_vec_with_capacity.rs:26:9
   |
LL |         std::iter::repeat(Vec::<()>::with_capacity(42));
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: none of the yielded `Vec`s will have the requested capacity
help: if you intended to create an iterator that yields `Vec`s with an initial capacity, try
   |
LL |         std::iter::from_fn(|| Some(Vec::<()>::with_capacity(42)));
   |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

error: aborting due to 3 previous errors