-#![feature(optin_builtin_traits)]
+#![feature(negative_impls)]
#![feature(specialization)]
struct S;
default unsafe impl Send for S {} //~ ERROR impls of auto traits cannot be default
default impl !Send for Z {} //~ ERROR impls of auto traits cannot be default
+ //~^ ERROR negative impls cannot be default impls
trait Tr {}
-default impl !Tr for S {} //~ ERROR negative impls are only allowed for auto traits
+default impl !Tr for S {} //~ ERROR negative impls cannot be default impls
fn main() {}