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` which comes from the expansion of the macro `panic` (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`.