error[E0585]: found a documentation comment that doesn't document anything --> $DIR/doc-before-struct-rbrace-2.rs:2:11 | LL | a: u8 /// document | ^^^^^^^^^^^^ | = help: doc comments must come before what they document, if a comment was intended use `//` error: aborting due to previous error For more information about this error, try `rustc --explain E0585`.