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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`
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= 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 previous error
For more information about this error, try `rustc --explain E0308`.
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