1 error[E0391]: cycle detected when processing `cycle1::{{opaque}}#0`
2 --> $DIR/auto-trait-leak.rs:12:16
4 LL | fn cycle1() -> impl Clone {
7 note: ...which requires processing `cycle1`...
8 --> $DIR/auto-trait-leak.rs:12:1
10 LL | fn cycle1() -> impl Clone {
11 | ^^^^^^^^^^^^^^^^^^^^^^^^^
12 = note: ...which requires evaluating trait selection obligation `impl std::clone::Clone: std::marker::Send`...
13 note: ...which requires processing `cycle2::{{opaque}}#0`...
14 --> $DIR/auto-trait-leak.rs:21:16
16 LL | fn cycle2() -> impl Clone {
18 note: ...which requires processing `cycle2`...
19 --> $DIR/auto-trait-leak.rs:21:1
21 LL | fn cycle2() -> impl Clone {
22 | ^^^^^^^^^^^^^^^^^^^^^^^^^
23 = note: ...which requires evaluating trait selection obligation `impl std::clone::Clone: std::marker::Send`...
24 = note: ...which again requires processing `cycle1::{{opaque}}#0`, completing the cycle
25 note: cycle used when checking item types in top-level module
26 --> $DIR/auto-trait-leak.rs:1:1
28 LL | / use std::cell::Cell;
29 LL | | use std::rc::Rc;
31 LL | | fn send<T: Send>(_: T) {}
33 LL | | Rc::new(String::from("foo"))
37 error[E0391]: cycle detected when processing `cycle1::{{opaque}}#0`
38 --> $DIR/auto-trait-leak.rs:12:16
40 LL | fn cycle1() -> impl Clone {
43 note: ...which requires processing `cycle1`...
44 --> $DIR/auto-trait-leak.rs:12:1
46 LL | fn cycle1() -> impl Clone {
47 | ^^^^^^^^^^^^^^^^^^^^^^^^^
48 = note: ...which requires evaluating trait selection obligation `impl std::clone::Clone: std::marker::Send`...
49 note: ...which requires processing `cycle2::{{opaque}}#0`...
50 --> $DIR/auto-trait-leak.rs:21:16
52 LL | fn cycle2() -> impl Clone {
54 note: ...which requires processing `cycle2`...
55 --> $DIR/auto-trait-leak.rs:21:1
57 LL | fn cycle2() -> impl Clone {
58 | ^^^^^^^^^^^^^^^^^^^^^^^^^
59 = note: ...which again requires processing `cycle1::{{opaque}}#0`, completing the cycle
60 note: cycle used when checking item types in top-level module
61 --> $DIR/auto-trait-leak.rs:1:1
63 LL | / use std::cell::Cell;
64 LL | | use std::rc::Rc;
66 LL | | fn send<T: Send>(_: T) {}
68 LL | | Rc::new(String::from("foo"))
72 error[E0277]: `std::rc::Rc<std::string::String>` cannot be sent between threads safely
73 --> $DIR/auto-trait-leak.rs:15:5
75 LL | fn send<T: Send>(_: T) {}
76 | ---- ---- required by this bound in `send`
78 LL | send(cycle2().clone());
79 | ^^^^ `std::rc::Rc<std::string::String>` cannot be sent between threads safely
81 = help: within `impl std::clone::Clone`, the trait `std::marker::Send` is not implemented for `std::rc::Rc<std::string::String>`
82 = note: required because it appears within the type `impl std::clone::Clone`
84 error: aborting due to 3 previous errors
86 Some errors have detailed explanations: E0277, E0391.
87 For more information about an error, try `rustc --explain E0277`.