#### Note: this error code is no longer emitted by the compiler. You gave too few lifetime arguments. Example: ```compile_fail,E0107 fn foo<'a: 'b, 'b: 'a>() {} fn main() { foo::<'static>(); // error: wrong number of lifetime arguments: // expected 2, found 1 } ``` Please check you give the right number of lifetime arguments. Example: ``` fn foo<'a: 'b, 'b: 'a>() {} fn main() { foo::<'static, 'static>(); } ```