| error[E0308]: mismatched types |
| --> $DIR/impl-trait-in-macro.rs:9:9 |
| | |
| LL | ($($tr:tt)*) => { impl $($tr)* }; |
| | ---- |
| | | |
| | expected type parameter |
| | found 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` (type parameter `impl Debug`) |
| found type parameter `impl Debug` (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`. |
