src/test/ui/lifetimes/lifetime-errors/issue_74400.stderr

   1 error[E0310]: the parameter type `T` may not live long enough
   2   --> $DIR/issue_74400.rs:12:5
   3    |
   4 LL |     f(data, identity)
   5    |     ^^^^^^^^^^^^^^^^^ ...so that the type `T` will meet its required lifetime bounds
   6    |
   7 help: consider adding an explicit lifetime bound...
   8    |
   9 LL | fn g<T: 'static>(data: &[T]) {
  10    |       +++++++++
  11
  12 error[E0308]: mismatched types
  13   --> $DIR/issue_74400.rs:12:5
  14    |
  15 LL |     f(data, identity)
  16    |     ^^^^^^^^^^^^^^^^^ one type is more general than the other
  17    |
  18    = note: expected trait `for<'r> Fn<(&'r T,)>`
  19               found trait `Fn<(&T,)>`
  20 note: the lifetime requirement is introduced here
  21   --> $DIR/issue_74400.rs:8:34
  22    |
  23 LL | fn f<T, S>(data: &[T], key: impl Fn(&T) -> S) {
  24    |                                  ^^^^^^^^^^^
  25
  26 error: implementation of `FnOnce` is not general enough
  27   --> $DIR/issue_74400.rs:12:5
  28    |
  29 LL |     f(data, identity)
  30    |     ^^^^^^^^^^^^^^^^^ implementation of `FnOnce` is not general enough
  31    |
  32    = note: `fn(&'2 T) -> &'2 T {identity::<&'2 T>}` must implement `FnOnce<(&'1 T,)>`, for any lifetime `'1`...
  33    = note: ...but it actually implements `FnOnce<(&'2 T,)>`, for some specific lifetime `'2`
  34
  35 error: aborting due to 3 previous errors
  36
  37 Some errors have detailed explanations: E0308, E0310.
  38 For more information about an error, try `rustc --explain E0308`.