This compiles successfully on beta and nightly, but it should be an error. ```rust trait Trait { wut!{ } } fn main() { } ``` [(playground link)](https://play.rust-lang.org/?gist=c77a24bd3f8d440c5808dd348a0793f1&version=nightly&backtrace=0) ### Actual Result: The program compiles successfully. ### Expected Result: Compilation error (Rust 1.16 does this correctly) ```rust rustc 1.16.0 (30cf806ef 2017-03-10) error: macro undefined: 'wut!' ```
This compiles successfully on beta and nightly, but it should be an error.
(playground link)
Actual Result:
The program compiles successfully.
Expected Result:
Compilation error (Rust 1.16 does this correctly)