error[E0560]: struct `NonCopyable` has no field named `p` --> $DIR/issue-4736.rs:4:26 | LL | struct NonCopyable(()); | ----------- `NonCopyable` defined here ... LL | let z = NonCopyable{ p: () }; | ----------- ^ field does not exist | | | help: `NonCopyable` is a tuple struct, use the appropriate syntax: `NonCopyable(/* fields */)` error: aborting due to previous error For more information about this error, try `rustc --explain E0560`.