error[E0277]: the trait bound `std::rc::Rc<std::cell::Cell<i32>>: std::marker::Send` is not satisfied in `impl std::ops::Fn<(i32,)>`
  --> $DIR/auto-trait-leak.rs:25:5
   |
LL |     send(before());
   |     ^^^^ `std::rc::Rc<std::cell::Cell<i32>>` cannot be sent between threads safely
   |
   = help: within `impl std::ops::Fn<(i32,)>`, the trait `std::marker::Send` is not implemented for `std::rc::Rc<std::cell::Cell<i32>>`
   = note: required because it appears within the type `[closure@$DIR/auto-trait-leak.rs:19:5: 19:22 p:std::rc::Rc<std::cell::Cell<i32>>]`
   = note: required because it appears within the type `impl std::ops::Fn<(i32,)>`
note: required by `send`
  --> $DIR/auto-trait-leak.rs:22:1
   |
LL | fn send<T: Send>(_: T) {}
   | ^^^^^^^^^^^^^^^^^^^^^^

error[E0277]: the trait bound `std::rc::Rc<std::cell::Cell<i32>>: std::marker::Send` is not satisfied in `impl std::ops::Fn<(i32,)>`
  --> $DIR/auto-trait-leak.rs:28:5
   |
LL |     send(after());
   |     ^^^^ `std::rc::Rc<std::cell::Cell<i32>>` cannot be sent between threads safely
   |
   = help: within `impl std::ops::Fn<(i32,)>`, the trait `std::marker::Send` is not implemented for `std::rc::Rc<std::cell::Cell<i32>>`
   = note: required because it appears within the type `[closure@$DIR/auto-trait-leak.rs:36:5: 36:22 p:std::rc::Rc<std::cell::Cell<i32>>]`
   = note: required because it appears within the type `impl std::ops::Fn<(i32,)>`
note: required by `send`
  --> $DIR/auto-trait-leak.rs:22:1
   |
LL | fn send<T: Send>(_: T) {}
   | ^^^^^^^^^^^^^^^^^^^^^^

error[E0391]: cycle detected when processing `cycle1`
  --> $DIR/auto-trait-leak.rs:42:1
   |
LL | fn cycle1() -> impl Clone {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^
   |
note: ...which requires evaluating trait selection obligation `impl std::clone::Clone: std::marker::Send`...
note: ...which requires processing `cycle2::{{impl-Trait}}`...
  --> $DIR/auto-trait-leak.rs:49:16
   |
LL | fn cycle2() -> impl Clone {
   |                ^^^^^^^^^^
note: ...which requires processing `cycle2`...
  --> $DIR/auto-trait-leak.rs:49:1
   |
LL | fn cycle2() -> impl Clone {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^
note: ...which requires evaluating trait selection obligation `impl std::clone::Clone: std::marker::Send`...
note: ...which requires processing `cycle1::{{impl-Trait}}`...
  --> $DIR/auto-trait-leak.rs:42:16
   |
LL | fn cycle1() -> impl Clone {
   |                ^^^^^^^^^^
   = note: ...which again requires processing `cycle1`, completing the cycle
note: cycle used when type-checking all item bodies

error: aborting due to 3 previous errors

Some errors occurred: E0277, E0391.
For more information about an error, try `rustc --explain E0277`.