error[E0080]: evaluation of constant value failed --> $DIR/panic-assoc-never-type.rs:9:21 | LL | const VOID: ! = panic!(); | ^^^^^^^^ the evaluated program panicked at 'explicit panic', $DIR/panic-assoc-never-type.rs:9:21 | = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) note: erroneous constant used --> $DIR/panic-assoc-never-type.rs:14:13 | LL | let _ = PrintName::VOID; | ^^^^^^^^^^^^^^^ note: erroneous constant used --> $DIR/panic-assoc-never-type.rs:14:13 | LL | let _ = PrintName::VOID; | ^^^^^^^^^^^^^^^ error: aborting due to previous error For more information about this error, try `rustc --explain E0080`.