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error[E0005]: refutable pattern in local binding
--> $DIR/empty-never-array.rs:10:9
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LL | let Helper::U(u) = Helper::T(t, []);
| ^^^^^^^^^^^^ pattern `Helper::T(_, _)` not covered
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= note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant
= note: for more information, visit https://doc.rust-lang.org/book/ch18-02-refutability.html
note: `Helper<T, U>` defined here
--> $DIR/empty-never-array.rs:3:6
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LL | enum Helper<T, U> {
| ^^^^^^
LL | T(T, [!; 0]),
| - not covered
= note: the matched value is of type `Helper<T, U>`
help: you might want to use `let else` to handle the variant that isn't matched
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LL | let Helper::U(u) = Helper::T(t, []) else { todo!() };
| ++++++++++++++++
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0005`.
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