// originally from rustc ./src/test/ui/regions/issue-78262.rs // ICE: to get the signature of a closure, use substs.as_closure().sig() not fn_sig() #![allow(clippy::upper_case_acronyms)] trait TT {} impl dyn TT { fn func(&self) {} } fn main() { let f = |x: &dyn TT| x.func(); //[default]~ ERROR: mismatched types //[nll]~^ ERROR: borrowed data escapes outside of closure }