| error[E0015]: cannot call non-const fn `<T as Foo>::a` in constant functions | |
| --> $DIR/super-traits-fail-2.rs:16:7 | |
| | | |
| LL | x.a(); | |
| | ^^^ | |
| | | |
| = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants | |
| error: aborting due to previous error | |
| For more information about this error, try `rustc --explain E0015`. |