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e77d9955a0
A few cleanups - change `skip(1).next()` to `nth(1)` - collapse some `if-else` expressions - remove a few explicit `return`s - remove an unnecessary field name - dereference once instead of matching on multiple references - prefer `iter().enumerate()` to indexing with `for` - remove some unnecessary lifetime annotations - use `writeln!()` instead of `write!()`+`\n` - remove redundant parentheses - shorten some enum variant names - a few other cleanups suggested by `clippy`