error[E0080]: evaluation of constant value failed
  --> $DIR/issue-76064.rs:1:17
   |
LL | struct Bug([u8; panic!("panic")]);
   |                 ^^^^^^^^^^^^^^^ the evaluated program panicked at 'panic', $DIR/issue-76064.rs:1:17
   |
   = note: this error originates in the macro `$crate::panic::panic_2015` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to previous error

For more information about this error, try `rustc --explain E0080`.
