1 error[E0600]: cannot apply unary operator `!` to type `&'static str`
2 --> $DIR/issue-28308.rs:2:5
5 | ^^^^^^^^^^^^^^ cannot apply unary operator `!`
7 = note: this error originates in the macro `assert` (in Nightly builds, run with -Z macro-backtrace for more info)
9 error: aborting due to previous error
11 For more information about this error, try `rustc --explain E0600`.