error: expected one of `,`, `:`, or `}`, found `a` --> $DIR/removed-syntax-with-2.rs:8:31 | LL | let b = S { foo: (), with a }; | - ---- ^ expected one of `,`, `:`, or `}` | | | | | while parsing this struct field | while parsing this struct error[E0063]: missing field `bar` in initializer of `S` --> $DIR/removed-syntax-with-2.rs:8:13 | LL | let b = S { foo: (), with a }; | ^ missing `bar` error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0063`.