warning: call to `.clone()` on a reference in this situation does nothing
  --> $DIR/noop-method-call.rs:16:71
   |
LL |     let non_clone_type_ref_clone: &PlainType<u32> = non_clone_type_ref.clone();
   |                                                                       ^^^^^^^^ unnecessary method call
   |
   = note: the type `&PlainType<u32>` which `clone` is being called on is the same as the type returned from `clone`, so the method call does not do anything and can be removed
note: the lint level is defined here
  --> $DIR/noop-method-call.rs:4:9
   |
LL | #![warn(noop_method_call)]
   |         ^^^^^^^^^^^^^^^^

warning: call to `.deref()` on a reference in this situation does nothing
  --> $DIR/noop-method-call.rs:28:63
   |
LL |     let non_deref_type_deref: &PlainType<u32> = non_deref_type.deref();
   |                                                               ^^^^^^^^ unnecessary method call
   |
   = note: the type `&PlainType<u32>` which `deref` is being called on is the same as the type returned from `deref`, so the method call does not do anything and can be removed

warning: call to `.borrow()` on a reference in this situation does nothing
  --> $DIR/noop-method-call.rs:36:66
   |
LL |     let non_borrow_type_borrow: &PlainType<u32> = non_borrow_type.borrow();
   |                                                                  ^^^^^^^^^ unnecessary method call
   |
   = note: the type `&PlainType<u32>` which `borrow` is being called on is the same as the type returned from `borrow`, so the method call does not do anything and can be removed

warning: call to `.clone()` on a reference in this situation does nothing
  --> $DIR/noop-method-call.rs:48:19
   |
LL |     non_clone_type.clone();
   |                   ^^^^^^^^ unnecessary method call
   |
   = note: the type `&PlainType<T>` which `clone` is being called on is the same as the type returned from `clone`, so the method call does not do anything and can be removed

warning: call to `.clone()` on a reference in this situation does nothing
  --> $DIR/noop-method-call.rs:53:19
   |
LL |     non_clone_type.clone();
   |                   ^^^^^^^^ unnecessary method call
   |
   = note: the type `&PlainType<u32>` which `clone` is being called on is the same as the type returned from `clone`, so the method call does not do anything and can be removed

warning: 5 warnings emitted