note: no external requirements
  --> $DIR/propagate-fail-to-approximate-longer-no-bounds.rs:35:47
   |
LL |     establish_relationships(&cell_a, &cell_b, |_outlives, x, y| {
   |                                               ^^^^^^^^^^^^^^^^^
   |
   = note: defining type: supply::{closure#0} with closure substs [
               i16,
               for<Region(BrAnon(None)), Region(BrAnon(None)), Region(BrAnon(None)), Region(BrAnon(None)), Region(BrAnon(None))> extern "rust-call" fn((&ReLateBound(DebruijnIndex(0), BoundRegion { var: 0, kind: BrAnon(None) }) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BoundRegion { var: 1, kind: BrAnon(None) }) &'?1 u32>, &ReLateBound(DebruijnIndex(0), BoundRegion { var: 2, kind: BrAnon(None) }) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BoundRegion { var: 3, kind: BrAnon(None) }) u32>, &ReLateBound(DebruijnIndex(0), BoundRegion { var: 4, kind: BrAnon(None) }) std::cell::Cell<&ReLateBound(DebruijnIndex(0), BoundRegion { var: 1, kind: BrAnon(None) }) u32>)),
               (),
           ]
   = note: late-bound region is '?2
   = note: late-bound region is '?3

error: lifetime may not live long enough
  --> $DIR/propagate-fail-to-approximate-longer-no-bounds.rs:37:9
   |
LL |     establish_relationships(&cell_a, &cell_b, |_outlives, x, y| {
   |                                                ---------  - has type `&'?7 Cell<&'1 u32>`
   |                                                |
   |                                                has type `&'?5 Cell<&'2 &'?1 u32>`
LL |         // Only works if 'x: 'y:
LL |         demand_y(x, y, x.get())
   |         ^^^^^^^^^^^^^^^^^^^^^^^ argument requires that `'1` must outlive `'2`

note: no external requirements
  --> $DIR/propagate-fail-to-approximate-longer-no-bounds.rs:34:1
   |
LL | fn supply<'a, 'b>(cell_a: Cell<&'a u32>, cell_b: Cell<&'b u32>) {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: defining type: supply

error: aborting due to previous error