| error[E0308]: mismatched types | |
| --> $DIR/universal-two-impl-traits.rs:5:9 | |
| | | |
| LL | fn foo(x: impl Debug, y: impl Debug) -> String { | |
| | ---------- ---------- found type parameter | |
| | | | |
| | expected type parameter | |
| LL | let mut a = x; | |
| | - expected due to this value | |
| LL | a = y; | |
| | ^ expected type parameter `impl Debug`, found a different type parameter `impl Debug` | |
| | | |
| = note: expected type parameter `impl Debug` | |
| found type parameter `impl Debug` | |
| = note: a type parameter was expected, but a different one was found; you might be missing a type parameter or trait bound | |
| = note: for more information, visit https://doc.rust-lang.org/book/ch10-02-traits.html#traits-as-parameters | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0308`. |