error: replacing an `Option` with `None`
  --> $DIR/mem_replace.rs:16:13
   |
LL |     let _ = mem::replace(&mut an_option, None);
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider `Option::take()` instead: `an_option.take()`
   |
   = note: `-D clippy::mem-replace-option-with-none` implied by `-D warnings`

error: replacing an `Option` with `None`
  --> $DIR/mem_replace.rs:18:13
   |
LL |     let _ = mem::replace(an_option, None);
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider `Option::take()` instead: `an_option.take()`

error: aborting due to 2 previous errors