error[E0015]: cannot call non-const fn `<() as Foo>::foo` in constant functions
  --> $DIR/const_closure-const_trait_impl-ice-113381.rs:13:22
   |
LL |     (const || { (()).foo() })();
   |                      ^^^^^
   |
   = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0015`.