1 error[E0015]: cannot call non-const closure in constants
2 --> $DIR/issue-93647.rs:2:5
7 = note: closures need an RFC before allowed to be called in constants
8 = note: calls in constants are limited to constant functions, tuple structs and tuple variants
10 error: aborting due to previous error
12 For more information about this error, try `rustc --explain E0015`.