note: external requirements --> $DIR/propagate-despite-same-free-region.rs:42:9 | LL | |_outlives1, _outlives2, x, y| { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: defining type: supply::{closure#0} with closure substs [ i16, for extern "rust-call" fn((std::cell::Cell<&'?1 &ReLateBound(DebruijnIndex(0), BoundRegion { var: 0, kind: BrAnon(None) }) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BoundRegion { var: 1, kind: BrAnon(None) }) &'?2 u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BoundRegion { var: 0, kind: BrAnon(None) }) u32>, std::cell::Cell<&ReLateBound(DebruijnIndex(0), BoundRegion { var: 1, kind: BrAnon(None) }) u32>)), (), ] = note: late-bound region is '?3 = note: number of external vids: 4 = note: where '?1: '?2 note: no external requirements --> $DIR/propagate-despite-same-free-region.rs:39:1 | LL | fn supply<'a>(cell_a: Cell<&'a u32>) { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: defining type: supply