error: this function could have a `#[must_use]` attribute
  --> tests/ui/must_use_candidates.rs:16:1
   |
LL | pub fn pure(i: u8) -> u8 {
   | ^^^^^^^^^^^^^^^^^^^^^^^^ help: add the attribute: `#[must_use] pub fn pure(i: u8) -> u8`
   |
   = note: `-D clippy::must-use-candidate` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::must_use_candidate)]`

error: this method could have a `#[must_use]` attribute
  --> tests/ui/must_use_candidates.rs:21:5
   |
LL |     pub fn inherent_pure(&self) -> u8 {
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: add the attribute: `#[must_use] pub fn inherent_pure(&self) -> u8`

error: this function could have a `#[must_use]` attribute
  --> tests/ui/must_use_candidates.rs:52:1
   |
LL | pub fn with_marker(_d: std::marker::PhantomData<&mut u32>) -> bool {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: add the attribute: `#[must_use] pub fn with_marker(_d: std::marker::PhantomData<&mut u32>) -> bool`

error: this function could have a `#[must_use]` attribute
  --> tests/ui/must_use_candidates.rs:64:1
   |
LL | pub fn rcd(_x: Rc<u32>) -> bool {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: add the attribute: `#[must_use] pub fn rcd(_x: Rc<u32>) -> bool`

error: this function could have a `#[must_use]` attribute
  --> tests/ui/must_use_candidates.rs:72:1
   |
LL | pub fn arcd(_x: Arc<u32>) -> bool {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: add the attribute: `#[must_use] pub fn arcd(_x: Arc<u32>) -> bool`

error: aborting due to 5 previous errors