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error: invalid `?` in type
--> $DIR/issue-104582.rs:2:30
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LL | let my_var: String(String?);
| ^ `?` is only allowed on expressions, not types
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help: if you meant to express that the type might not contain a value, use the `Option` wrapper type
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LL - let my_var: String(String?);
LL + let my_var: String(Option<String>);
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error[E0214]: parenthesized type parameters may only be used with a `Fn` trait
--> $DIR/issue-104582.rs:2:17
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LL | let my_var: String(String?);
| ^^^^^^^^^^^^^^^ only `Fn` traits may use parentheses
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help: use angle brackets instead
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LL - let my_var: String(String?);
LL + let my_var: String<String?>;
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error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0214`.
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