error: cloning an `Option<_>` using `.as_ref().cloned()`
  --> tests/ui/option_as_ref_cloned.rs:7:31
   |
LL |     let _: Option<String> = x.as_ref().cloned();
   |                               ^^^^^^^^^^^^^^^
   |
   = note: `-D clippy::option-as-ref-cloned` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::option_as_ref_cloned)]`
help: this can be written more concisely by cloning the `Option<_>` directly
   |
LL |     let _: Option<String> = x.clone();
   |                               ~~~~~

error: cloning an `Option<_>` using `.as_mut().cloned()`
  --> tests/ui/option_as_ref_cloned.rs:8:31
   |
LL |     let _: Option<String> = x.as_mut().cloned();
   |                               ^^^^^^^^^^^^^^^
   |
help: this can be written more concisely by cloning the `Option<_>` directly
   |
LL |     let _: Option<String> = x.clone();
   |                               ~~~~~

error: cloning an `Option<_>` using `.as_ref().cloned()`
  --> tests/ui/option_as_ref_cloned.rs:11:32
   |
LL |     let _: Option<&String> = y.as_ref().cloned();
   |                                ^^^^^^^^^^^^^^^
   |
help: this can be written more concisely by cloning the `Option<_>` directly
   |
LL |     let _: Option<&String> = y.clone();
   |                                ~~~~~

error: aborting due to 3 previous errors