note: No external requirements --> $DIR/escape-argument.rs:26:38 | LL | let mut closure = expect_sig(|p, y| *p = y); | ^^^^^^^^^^^^^ | = note: defining type: DefId(0/1:9 ~ escape_argument[317d]::test[0]::{{closure}}[0]) with closure substs [ i16, for<'r, 's> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 'r)) mut &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) i32, &ReLateBound(DebruijnIndex(0), BrNamed(crate0:DefIndex(0:0), 's)) i32)) ] note: No external requirements --> $DIR/escape-argument.rs:20:1 | LL | / fn test() { LL | | let x = 44; LL | | let mut p = &x; LL | | ... | LL | | deref(p); LL | | } | |_^ | = note: defining type: DefId(0/0:3 ~ escape_argument[317d]::test[0]) with substs [] error[E0597]: `y` does not live long enough --> $DIR/escape-argument.rs:27:25 | LL | closure(&mut p, &y); | ^^ borrowed value does not live long enough LL | //~^ ERROR `y` does not live long enough [E0597] LL | } | - `y` dropped here while still borrowed LL | LL | deref(p); | - borrow later used here error: aborting due to previous error For more information about this error, try `rustc --explain E0597`.