---
source: codespan-reporting/tests/term.rs
expression: TEST_DATA.emit_no_color(&config)
---
error[E0666]: nested `impl Trait` is not allowed
  ┌─ nested_impl_trait.rs:5:46
  │
5 │ fn bad_in_ret_position(x: impl Into<u32>) -> impl Into<impl Debug> { x }
  │                                              ----------^^^^^^^^^^-
  │                                              │         │
  │                                              │         nested `impl Trait` here
  │                                              outer `impl Trait`

error[E0121]: the type placeholder `_` is not allowed within types on item signatures
  ┌─ typeck_type_placeholder_item.rs:1:18
  │
1 │ fn fn_test1() -> _ { 5 }
  │                  ^
  │                  │
  │                  not allowed in type signatures
  │                  help: replace with the correct return type: `i32`

error[E0121]: the type placeholder `_` is not allowed within types on item signatures
  ┌─ typeck_type_placeholder_item.rs:2:24
  │
2 │ fn fn_test2(x: i32) -> (_, _) { (x, x) }
  │                        -^--^-
  │                        ││  │
  │                        ││  not allowed in type signatures
  │                        │not allowed in type signatures
  │                        help: replace with the correct return type: `(i32, i32)`

error[E0277]: `std::rc::Rc<()>` cannot be sent between threads safely
   ┌─ no_send_res_ports.rs:25:5
   │  
25 │       thread::spawn(move|| {
   │       ^^^^^^^^^^^^^ `std::rc::Rc<()>` cannot be sent between threads safely
   │ ╭───────────────────'
26 │ │         let y = x;
27 │ │         println!("{:?}", y);
28 │ │     });
   │ ╰──────' within this `[closure@no_send_res_ports.rs:29:19: 33:6 x:main::Foo]`
   │  
   ┌─ libstd/thread/mod.rs:5:8
   │
 5 │     F: Send + 'static,
   │        ---- required by this bound in `std::thread::spawn`
   │
   = help: within `[closure@no_send_res_ports.rs:29:19: 33:6 x:main::Foo]`, the trait `std::marker::Send` is not implemented for `std::rc::Rc<()>`
   = note: required because it appears within the type `Port<()>`
   = note: required because it appears within the type `main::Foo`
   = note: required because it appears within the type `[closure@no_send_res_ports.rs:29:19: 33:6 x:main::Foo]`

error: aborting due 5 previous errors
 = Some errors have detailed explanations: E0121, E0277, E0666.
 = For more information about an error, try `rustc --explain E0121`.