error[E0621]: explicit lifetime required in the type of `x` --> $DIR/closure-bounds-static-cant-capture-borrowed.rs:5:5 | LL | fn foo(x: &()) { | --- help: add explicit lifetime `'static` to the type of `x`: `&'static ()` LL | bar(|| { | ^^^ lifetime `'static` required error: aborting due to previous error For more information about this error, try `rustc --explain E0621`.