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error[E0393]: the type parameter `T` must be explicitly specified
--> $DIR/E0393.rs:3:47
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LL | trait A<T=Self> {}
| --------------- type parameter `T` must be specified for this
LL |
LL | fn together_we_will_rule_the_galaxy(son: &dyn A) {}
| ^ help: set the type parameter to the desired type: `A<T>`
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= note: because of the default `Self` reference, type parameters must be specified on object types
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0393`.
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