error[E0759]: `self` has an anonymous lifetime `'_` but it needs to satisfy a `'static` lifetime requirement
  --> $DIR/static-return-lifetime-infered.rs:7:16
   |
LL |     fn iter_values_anon(&self) -> impl Iterator<Item=u32> {
   |                         ----- this data with an anonymous lifetime `'_`...
LL |         self.x.iter().map(|a| a.0)
   |         ------ ^^^^
   |         |
   |         ...is captured here...
   |
note: ...and is required to live as long as `'static` here
  --> $DIR/static-return-lifetime-infered.rs:6:35
   |
LL |     fn iter_values_anon(&self) -> impl Iterator<Item=u32> {
   |                                   ^^^^^^^^^^^^^^^^^^^^^^^
help: to declare that the `impl Trait` captures data from argument `self`, you can add an explicit `'_` lifetime bound
   |
LL |     fn iter_values_anon(&self) -> impl Iterator<Item=u32> + '_ {
   |                                                           ^^^^

error[E0759]: `self` has lifetime `'a` but it needs to satisfy a `'static` lifetime requirement
  --> $DIR/static-return-lifetime-infered.rs:10:16
   |
LL |     fn iter_values<'a>(&'a self) -> impl Iterator<Item=u32> {
   |                        -------- this data with lifetime `'a`...
LL |         self.x.iter().map(|a| a.0)
   |         ------ ^^^^
   |         |
   |         ...is captured here...
   |
note: ...and is required to live as long as `'static` here
  --> $DIR/static-return-lifetime-infered.rs:9:37
   |
LL |     fn iter_values<'a>(&'a self) -> impl Iterator<Item=u32> {
   |                                     ^^^^^^^^^^^^^^^^^^^^^^^
help: to declare that the `impl Trait` captures data from argument `self`, you can add an explicit `'a` lifetime bound
   |
LL |     fn iter_values<'a>(&'a self) -> impl Iterator<Item=u32> + 'a {
   |                                                             ^^^^

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0759`.