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|
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 args [
i16,
for<Region(BrAnon), Region(BrAnon), Region(BrAnon), Region(BrAnon), Region(BrAnon)> extern "rust-call" fn((&'^0 std::cell::Cell<&'^1 &'?1 u32>, &'^2 std::cell::Cell<&'^3 u32>, &'^4 std::cell::Cell<&'^1 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 `&'?6 Cell<&'1 u32>`
| |
| has type `&'?4 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: requirement occurs because of the type `Cell<&'?37 u32>`, which makes the generic argument `&'?37 u32` invariant
= note: the struct `Cell<T>` is invariant over the parameter `T`
= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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 1 previous error
|
