| #![feature(rustc_attrs)] |
| #![allow(unused)] |
| |
| // revisions: migrate nll |
| #![cfg_attr(nll, feature(nll))] |
| |
| fn f() { |
| let mut x: Vec<()> = Vec::new(); |
| |
| || { |
| || { |
| x.push(()) |
| } |
| //[migrate]~^^^ WARNING captured variable cannot escape `FnMut` closure body |
| //[migrate]~| WARNING this error has been downgraded to a warning |
| //[migrate]~| WARNING this warning will become a hard error in the future |
| //[nll]~^^^^^^ ERROR captured variable cannot escape `FnMut` closure body |
| }; |
| } |
| |
| #[rustc_error] |
| fn main() {} |
| //[migrate]~^ ERROR |
