error: mismatched closing delimiter: `)` --> $DIR/issue-68987-unmatch-issue-3.rs:5:19 | LL | while cnt < j { | ^ unclosed delimiter LL | write!&mut res, " "); | ^ mismatched closing delimiter error: unexpected closing delimiter: `}` --> $DIR/issue-68987-unmatch-issue-3.rs:8:1 | LL | write!&mut res, " "); | - missing open `(` for this delimiter LL | } LL | } | ^ unexpected closing delimiter error: aborting due to 2 previous errors