src/test/rustdoc-ui/nocapture.rs

// check-pass
// compile-flags:--test -Zunstable-options --nocapture
// normalize-stdout-test: "src/test/rustdoc-ui" -> "$$DIR"
// normalize-stdout-test "finished in \d+\.\d+s" -> "finished in $$TIME"

/// ```
/// println!("hello!");
/// eprintln!("stderr");
/// ```
pub struct Foo;