1 An unsupported expression was used inside a const context.
3 Erroneous code example:
5 ```compile_fail,edition2018,E0744
11 At the moment, `.await` is forbidden inside a `const`, `static`, or `const fn`.
13 This may be allowed at some point in the future, but the implementation is not
14 yet complete. See the tracking issue for [`async`] in `const fn`.
16 [`async`]: https://github.com/rust-lang/rust/issues/69431