src/test/ui/object-safety/object-safety-no-static.curr.stderr

   1 error[E0038]: the trait `Foo` cannot be made into an object
   2   --> $DIR/object-safety-no-static.rs:12:22
   3    |
   4 LL | fn diverges() -> Box<dyn Foo> {
   5    |                      ^^^^^^^ `Foo` cannot be made into an object
   6    |
   7 note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
   8   --> $DIR/object-safety-no-static.rs:9:8
   9    |
  10 LL | trait Foo {
  11    |       --- this trait cannot be made into an object...
  12 LL |     fn foo() {}
  13    |        ^^^ ...because associated function `foo` has no `self` parameter
  14 help: consider turning `foo` into a method by giving it a `&self` argument
  15    |
  16 LL |     fn foo(&self) {}
  17    |            +++++
  18 help: alternatively, consider constraining `foo` so it does not apply to trait objects
  19    |
  20 LL |     fn foo() where Self: Sized {}
  21    |              +++++++++++++++++
  22
  23 error: aborting due to previous error
  24
  25 For more information about this error, try `rustc --explain E0038`.