error[E0644]: closure/generator type that references itself --> $DIR/unboxed-closure-no-cyclic-sig.rs:8:7 | LL | g(|_| { }); | ^^^^^^^^ cyclic type of infinite size | = note: closures cannot capture themselves or take themselves as argument; this error may be the result of a recent compiler bug-fix, see issue #46062 for more information error: aborting due to previous error For more information about this error, try `rustc --explain E0644`.