4 fn qux() -> Option<usize> {
7 //~^ ERROR expected one of `async`, `const`, `extern`, `fn`, `type`, `unsafe`, or `}`, found `;`
8 //~^^ ERROR expected one of `.`, `;`, `?`, `else`, or an operator, found `}`
9 //~^^^ ERROR 6:11: 6:12: expected identifier, found `;`
10 //~^^^^ ERROR missing `fn`, `type`, or `const` for trait-item declaration