| error[E0015]: cannot call non-const fn `<() as Foo>::foo` in constant functions | |
| --> $DIR/non-const-op-const-closure-non-const-outer.rs:13:22 | |
| | | |
| LL | (const || { (()).foo() })(); | |
| | ^^^^^ | |
| | | |
| = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants | |
| = help: add `#![feature(effects)]` to the crate attributes to enable | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0015`. |