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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: the matched value is of type `std::result::Result<u32, &R>`
+ = note: the matched value is of type `Result<u32, &R>`
help: you might want to use `if let` to ignore the variant that isn't matched
|
LL | if let Ok(x) = res { /* */ }